SDK for Rust を使用した Aurora の例

use aws_sdk_rds::Client;

#[derive(Debug)]
struct Error(String);
impl std::fmt::Display for Error {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "{}", self.0)
    }
}
impl std::error::Error for Error {}

#[tokio::main]
async fn main() -> Result<(), Error> {
    tracing_subscriber::fmt::init();
    let sdk_config = aws_config::from_env().load().await;
    let client = Client::new(&sdk_config);

    let describe_db_clusters_output = client
        .describe_db_clusters()
        .send()
        .await
        .map_err(|e| Error(e.to_string()))?;
    println!(
        "Found {} clusters:",
        describe_db_clusters_output.db_clusters().len()
    );
    for cluster in describe_db_clusters_output.db_clusters() {
        let name = cluster.database_name().unwrap_or("Unknown");
        let engine = cluster.engine().unwrap_or("Unknown");
        let id = cluster.db_cluster_identifier().unwrap_or("Unknown");
        let class = cluster.db_cluster_instance_class().unwrap_or("Unknown");
        println!("\tDatabase: {name}",);
        println!("\t  Engine: {engine}",);
        println!("\t      ID: {id}",);
        println!("\tInstance: {class}",);
    }

    Ok(())
}

Aurora シナリオのシナリオ固有の関数を含むライブラリ。

use phf::{phf_set, Set};
use secrecy::SecretString;
use std::{collections::HashMap, fmt::Display, time::Duration};

use aws_sdk_rds::{
    error::ProvideErrorMetadata,
    operation::create_db_cluster_parameter_group::CreateDbClusterParameterGroupOutput,
    types::{DbCluster, DbClusterParameterGroup, DbClusterSnapshot, DbInstance, Parameter},
};
use sdk_examples_test_utils::waiter::Waiter;
use tracing::{info, trace, warn};

const DB_ENGINE: &str = "aurora-mysql";
const DB_CLUSTER_PARAMETER_GROUP_NAME: &str = "RustSDKCodeExamplesDBParameterGroup";
const DB_CLUSTER_PARAMETER_GROUP_DESCRIPTION: &str =
    "Parameter Group created by Rust SDK Code Example";
const DB_CLUSTER_IDENTIFIER: &str = "RustSDKCodeExamplesDBCluster";
const DB_INSTANCE_IDENTIFIER: &str = "RustSDKCodeExamplesDBInstance";

static FILTER_PARAMETER_NAMES: Set<&'static str> = phf_set! {
    "auto_increment_offset",
    "auto_increment_increment",
};

#[derive(Debug, PartialEq, Eq)]
struct MetadataError {
    message: Option<String>,
    code: Option<String>,
}

impl MetadataError {
    fn from(err: &dyn ProvideErrorMetadata) -> Self {
        MetadataError {
            message: err.message().map(String::from),
            code: err.code().map(String::from),
        }
    }
}

impl Display for MetadataError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        let display = match (&self.message, &self.code) {
            (None, None) => "Unknown".to_string(),
            (None, Some(code)) => format!("({code})"),
            (Some(message), None) => message.to_string(),
            (Some(message), Some(code)) => format!("{message} ({code})"),
        };
        write!(f, "{display}")
    }
}

#[derive(Debug, PartialEq, Eq)]
pub struct ScenarioError {
    message: String,
    context: Option<MetadataError>,
}

impl ScenarioError {
    pub fn with(message: impl Into<String>) -> Self {
        ScenarioError {
            message: message.into(),
            context: None,
        }
    }

    pub fn new(message: impl Into<String>, err: &dyn ProvideErrorMetadata) -> Self {
        ScenarioError {
            message: message.into(),
            context: Some(MetadataError::from(err)),
        }
    }
}

impl std::error::Error for ScenarioError {}
impl Display for ScenarioError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match &self.context {
            Some(c) => write!(f, "{}: {}", self.message, c),
            None => write!(f, "{}", self.message),
        }
    }
}

// Parse the ParameterName, Description, and AllowedValues values and display them.
#[derive(Debug)]
pub struct AuroraScenarioParameter {
    name: String,
    allowed_values: String,
    current_value: String,
}

impl Display for AuroraScenarioParameter {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(
            f,
            "{}: {} (allowed: {})",
            self.name, self.current_value, self.allowed_values
        )
    }
}

impl From<aws_sdk_rds::types::Parameter> for AuroraScenarioParameter {
    fn from(value: aws_sdk_rds::types::Parameter) -> Self {
        AuroraScenarioParameter {
            name: value.parameter_name.unwrap_or_default(),
            allowed_values: value.allowed_values.unwrap_or_default(),
            current_value: value.parameter_value.unwrap_or_default(),
        }
    }
}

pub struct AuroraScenario {
    rds: crate::rds::Rds,
    engine_family: Option<String>,
    engine_version: Option<String>,
    instance_class: Option<String>,
    db_cluster_parameter_group: Option<DbClusterParameterGroup>,
    db_cluster_identifier: Option<String>,
    db_instance_identifier: Option<String>,
    username: Option<String>,
    password: Option<SecretString>,
}

impl AuroraScenario {
    pub fn new(client: crate::rds::Rds) -> Self {
        AuroraScenario {
            rds: client,
            engine_family: None,
            engine_version: None,
            instance_class: None,
            db_cluster_parameter_group: None,
            db_cluster_identifier: None,
            db_instance_identifier: None,
            username: None,
            password: None,
        }
    }

    // Get available engine families for Aurora MySql. rds.DescribeDbEngineVersions(Engine='aurora-mysql') and build a set of the 'DBParameterGroupFamily' field values. I get {aurora-mysql8.0, aurora-mysql5.7}.
    pub async fn get_engines(&self) -> Result<HashMap<String, Vec<String>>, ScenarioError> {
        let describe_db_engine_versions = self.rds.describe_db_engine_versions(DB_ENGINE).await;
        trace!(versions=?describe_db_engine_versions, "full list of versions");

        if let Err(err) = describe_db_engine_versions {
            return Err(ScenarioError::new(
                "Failed to retrieve DB Engine Versions",
                &err,
            ));
        };

        let version_count = describe_db_engine_versions
            .as_ref()
            .map(|o| o.db_engine_versions().len())
            .unwrap_or_default();
        info!(version_count, "got list of versions");

        // Create a map of engine families to their available versions.
        let mut versions = HashMap::<String, Vec<String>>::new();
        describe_db_engine_versions
            .unwrap()
            .db_engine_versions()
            .iter()
            .filter_map(
                |v| match (&v.db_parameter_group_family, &v.engine_version) {
                    (Some(family), Some(version)) => Some((family.clone(), version.clone())),
                    _ => None,
                },
            )
            .for_each(|(family, version)| versions.entry(family).or_default().push(version));

        Ok(versions)
    }

    pub async fn get_instance_classes(&self) -> Result<Vec<String>, ScenarioError> {
        let describe_orderable_db_instance_options_items = self
            .rds
            .describe_orderable_db_instance_options(
                DB_ENGINE,
                self.engine_version
                    .as_ref()
                    .expect("engine version for db instance options")
                    .as_str(),
            )
            .await;

        describe_orderable_db_instance_options_items
            .map(|options| {
                options
                    .iter()
                    .filter(|o| o.storage_type() == Some("aurora"))
                    .map(|o| o.db_instance_class().unwrap_or_default().to_string())
                    .collect::<Vec<String>>()
            })
            .map_err(|err| ScenarioError::new("Could not get available instance classes", &err))
    }

    // Select an engine family and create a custom DB cluster parameter group. rds.CreateDbClusterParameterGroup(DBParameterGroupFamily='aurora-mysql8.0')
    pub async fn set_engine(&mut self, engine: &str, version: &str) -> Result<(), ScenarioError> {
        self.engine_family = Some(engine.to_string());
        self.engine_version = Some(version.to_string());
        let create_db_cluster_parameter_group = self
            .rds
            .create_db_cluster_parameter_group(
                DB_CLUSTER_PARAMETER_GROUP_NAME,
                DB_CLUSTER_PARAMETER_GROUP_DESCRIPTION,
                engine,
            )
            .await;

        match create_db_cluster_parameter_group {
            Ok(CreateDbClusterParameterGroupOutput {
                db_cluster_parameter_group: None,
                ..
            }) => {
                return Err(ScenarioError::with(
                    "CreateDBClusterParameterGroup had empty response",
                ));
            }
            Err(error) => {
                if error.code() == Some("DBParameterGroupAlreadyExists") {
                    info!("Cluster Parameter Group already exists, nothing to do");
                } else {
                    return Err(ScenarioError::new(
                        "Could not create Cluster Parameter Group",
                        &error,
                    ));
                }
            }
            _ => {
                info!("Created Cluster Parameter Group");
            }
        }

        Ok(())
    }

    pub fn set_instance_class(&mut self, instance_class: Option<String>) {
        self.instance_class = instance_class;
    }

    pub fn set_login(&mut self, username: Option<String>, password: Option<SecretString>) {
        self.username = username;
        self.password = password;
    }

    pub async fn connection_string(&self) -> Result<String, ScenarioError> {
        let cluster = self.get_cluster().await?;
        let endpoint = cluster.endpoint().unwrap_or_default();
        let port = cluster.port().unwrap_or_default();
        let username = cluster.master_username().unwrap_or_default();
        Ok(format!("mysql -h {endpoint} -P {port} -u {username} -p"))
    }

    pub async fn get_cluster(&self) -> Result<DbCluster, ScenarioError> {
        let describe_db_clusters_output = self
            .rds
            .describe_db_clusters(
                self.db_cluster_identifier
                    .as_ref()
                    .expect("cluster identifier")
                    .as_str(),
            )
            .await;
        if let Err(err) = describe_db_clusters_output {
            return Err(ScenarioError::new("Failed to get cluster", &err));
        }

        let db_cluster = describe_db_clusters_output
            .unwrap()
            .db_clusters
            .and_then(|output| output.first().cloned());

        db_cluster.ok_or_else(|| ScenarioError::with("Did not find the cluster"))
    }

    // Get the parameter group. rds.DescribeDbClusterParameterGroups
    // Get parameters in the group. This is a long list so you will have to paginate. Find the auto_increment_offset and auto_increment_increment parameters (by ParameterName). rds.DescribeDbClusterParameters
    // Parse the ParameterName, Description, and AllowedValues values and display them.
    pub async fn cluster_parameters(&self) -> Result<Vec<AuroraScenarioParameter>, ScenarioError> {
        let parameters_output = self
            .rds
            .describe_db_cluster_parameters(DB_CLUSTER_PARAMETER_GROUP_NAME)
            .await;

        if let Err(err) = parameters_output {
            return Err(ScenarioError::new(
                format!("Failed to retrieve parameters for {DB_CLUSTER_PARAMETER_GROUP_NAME}"),
                &err,
            ));
        }

        let parameters = parameters_output
            .unwrap()
            .into_iter()
            .flat_map(|p| p.parameters.unwrap_or_default().into_iter())
            .filter(|p| FILTER_PARAMETER_NAMES.contains(p.parameter_name().unwrap_or_default()))
            .map(AuroraScenarioParameter::from)
            .collect::<Vec<_>>();

        Ok(parameters)
    }

    // Modify both the auto_increment_offset and auto_increment_increment parameters in one call in the custom parameter group. Set their ParameterValue fields to a new allowable value. rds.ModifyDbClusterParameterGroup.
    pub async fn update_auto_increment(
        &self,
        offset: u8,
        increment: u8,
    ) -> Result<(), ScenarioError> {
        let modify_db_cluster_parameter_group = self
            .rds
            .modify_db_cluster_parameter_group(
                DB_CLUSTER_PARAMETER_GROUP_NAME,
                vec![
                    Parameter::builder()
                        .parameter_name("auto_increment_offset")
                        .parameter_value(format!("{offset}"))
                        .apply_method(aws_sdk_rds::types::ApplyMethod::Immediate)
                        .build(),
                    Parameter::builder()
                        .parameter_name("auto_increment_increment")
                        .parameter_value(format!("{increment}"))
                        .apply_method(aws_sdk_rds::types::ApplyMethod::Immediate)
                        .build(),
                ],
            )
            .await;

        if let Err(error) = modify_db_cluster_parameter_group {
            return Err(ScenarioError::new(
                "Failed to modify cluster parameter group",
                &error,
            ));
        }

        Ok(())
    }

    // Get a list of allowed engine versions. rds.DescribeDbEngineVersions(Engine='aurora-mysql', DBParameterGroupFamily=<the family used to create your parameter group in step 2>)
    // Create an Aurora DB cluster database cluster that contains a MySql database and uses the parameter group you created.
    // Wait for DB cluster to be ready. Call rds.DescribeDBClusters and check for Status == 'available'.
    // Get a list of instance classes available for the selected engine and engine version. rds.DescribeOrderableDbInstanceOptions(Engine='mysql', EngineVersion=).

    // Create a database instance in the cluster.
    // Wait for DB instance to be ready. Call rds.DescribeDbInstances and check for DBInstanceStatus == 'available'.
    pub async fn start_cluster_and_instance(&mut self) -> Result<(), ScenarioError> {
        if self.password.is_none() {
            return Err(ScenarioError::with(
                "Must set Secret Password before starting a cluster",
            ));
        }
        let create_db_cluster = self
            .rds
            .create_db_cluster(
                DB_CLUSTER_IDENTIFIER,
                DB_CLUSTER_PARAMETER_GROUP_NAME,
                DB_ENGINE,
                self.engine_version.as_deref().expect("engine version"),
                self.username.as_deref().expect("username"),
                self.password
                    .replace(SecretString::new("".to_string()))
                    .expect("password"),
            )
            .await;
        if let Err(err) = create_db_cluster {
            return Err(ScenarioError::new(
                "Failed to create DB Cluster with cluster group",
                &err,
            ));
        }

        self.db_cluster_identifier = create_db_cluster
            .unwrap()
            .db_cluster
            .and_then(|c| c.db_cluster_identifier);

        if self.db_cluster_identifier.is_none() {
            return Err(ScenarioError::with("Created DB Cluster missing Identifier"));
        }

        info!(
            "Started a db cluster: {}",
            self.db_cluster_identifier
                .as_deref()
                .unwrap_or("Missing ARN")
        );

        let create_db_instance = self
            .rds
            .create_db_instance(
                self.db_cluster_identifier.as_deref().expect("cluster name"),
                DB_INSTANCE_IDENTIFIER,
                self.instance_class.as_deref().expect("instance class"),
                DB_ENGINE,
            )
            .await;
        if let Err(err) = create_db_instance {
            return Err(ScenarioError::new(
                "Failed to create Instance in DB Cluster",
                &err,
            ));
        }

        self.db_instance_identifier = create_db_instance
            .unwrap()
            .db_instance
            .and_then(|i| i.db_instance_identifier);

        // Cluster creation can take up to 20 minutes to become available
        let cluster_max_wait = Duration::from_secs(20 * 60);
        let waiter = Waiter::builder().max(cluster_max_wait).build();
        while waiter.sleep().await.is_ok() {
            let cluster = self
                .rds
                .describe_db_clusters(
                    self.db_cluster_identifier
                        .as_deref()
                        .expect("cluster identifier"),
                )
                .await;

            if let Err(err) = cluster {
                warn!(?err, "Failed to describe cluster while waiting for ready");
                continue;
            }

            let instance = self
                .rds
                .describe_db_instance(
                    self.db_instance_identifier
                        .as_deref()
                        .expect("instance identifier"),
                )
                .await;
            if let Err(err) = instance {
                return Err(ScenarioError::new(
                    "Failed to find instance for cluster",
                    &err,
                ));
            }

            let instances_available = instance
                .unwrap()
                .db_instances()
                .iter()
                .all(|instance| instance.db_instance_status() == Some("Available"));

            let endpoints = self
                .rds
                .describe_db_cluster_endpoints(
                    self.db_cluster_identifier
                        .as_deref()
                        .expect("cluster identifier"),
                )
                .await;

            if let Err(err) = endpoints {
                return Err(ScenarioError::new(
                    "Failed to find endpoint for cluster",
                    &err,
                ));
            }

            let endpoints_available = endpoints
                .unwrap()
                .db_cluster_endpoints()
                .iter()
                .all(|endpoint| endpoint.status() == Some("available"));

            if instances_available && endpoints_available {
                return Ok(());
            }
        }

        Err(ScenarioError::with("timed out waiting for cluster"))
    }

    // Create a snapshot of the DB cluster. rds.CreateDbClusterSnapshot.
    // Wait for the snapshot to create. rds.DescribeDbClusterSnapshots until Status == 'available'.
    pub async fn snapshot(&self, name: &str) -> Result<DbClusterSnapshot, ScenarioError> {
        let id = self.db_cluster_identifier.as_deref().unwrap_or_default();
        let snapshot = self
            .rds
            .snapshot_cluster(id, format!("{id}_{name}").as_str())
            .await;
        match snapshot {
            Ok(output) => match output.db_cluster_snapshot {
                Some(snapshot) => Ok(snapshot),
                None => Err(ScenarioError::with("Missing Snapshot")),
            },
            Err(err) => Err(ScenarioError::new("Failed to create snapshot", &err)),
        }
    }

    pub async fn clean_up(self) -> Result<(), Vec<ScenarioError>> {
        let mut clean_up_errors: Vec<ScenarioError> = vec![];

        // Delete the instance. rds.DeleteDbInstance.
        let delete_db_instance = self
            .rds
            .delete_db_instance(
                self.db_instance_identifier
                    .as_deref()
                    .expect("instance identifier"),
            )
            .await;
        if let Err(err) = delete_db_instance {
            let identifier = self
                .db_instance_identifier
                .as_deref()
                .unwrap_or("Missing Instance Identifier");
            let message = format!("failed to delete db instance {identifier}");
            clean_up_errors.push(ScenarioError::new(message, &err));
        } else {
            // Wait for the instance to delete
            let waiter = Waiter::default();
            while waiter.sleep().await.is_ok() {
                let describe_db_instances = self.rds.describe_db_instances().await;
                if let Err(err) = describe_db_instances {
                    clean_up_errors.push(ScenarioError::new(
                        "Failed to check instance state during deletion",
                        &err,
                    ));
                    break;
                }
                let db_instances = describe_db_instances
                    .unwrap()
                    .db_instances()
                    .iter()
                    .filter(|instance| instance.db_cluster_identifier == self.db_cluster_identifier)
                    .cloned()
                    .collect::<Vec<DbInstance>>();

                if db_instances.is_empty() {
                    trace!("Delete Instance waited and no instances were found");
                    break;
                }
                match db_instances.first().unwrap().db_instance_status() {
                    Some("Deleting") => continue,
                    Some(status) => {
                        info!("Attempting to delete but instances is in {status}");
                        continue;
                    }
                    None => {
                        warn!("No status for DB instance");
                        break;
                    }
                }
            }
        }

        // Delete the DB cluster. rds.DeleteDbCluster.
        let delete_db_cluster = self
            .rds
            .delete_db_cluster(
                self.db_cluster_identifier
                    .as_deref()
                    .expect("cluster identifier"),
            )
            .await;

        if let Err(err) = delete_db_cluster {
            let identifier = self
                .db_cluster_identifier
                .as_deref()
                .unwrap_or("Missing DB Cluster Identifier");
            let message = format!("failed to delete db cluster {identifier}");
            clean_up_errors.push(ScenarioError::new(message, &err));
        } else {
            // Wait for the instance and cluster to fully delete. rds.DescribeDbInstances and rds.DescribeDbClusters until both are not found.
            let waiter = Waiter::default();
            while waiter.sleep().await.is_ok() {
                let describe_db_clusters = self
                    .rds
                    .describe_db_clusters(
                        self.db_cluster_identifier
                            .as_deref()
                            .expect("cluster identifier"),
                    )
                    .await;
                if let Err(err) = describe_db_clusters {
                    clean_up_errors.push(ScenarioError::new(
                        "Failed to check cluster state during deletion",
                        &err,
                    ));
                    break;
                }
                let describe_db_clusters = describe_db_clusters.unwrap();
                let db_clusters = describe_db_clusters.db_clusters();
                if db_clusters.is_empty() {
                    trace!("Delete cluster waited and no clusters were found");
                    break;
                }
                match db_clusters.first().unwrap().status() {
                    Some("Deleting") => continue,
                    Some(status) => {
                        info!("Attempting to delete but clusters is in {status}");
                        continue;
                    }
                    None => {
                        warn!("No status for DB cluster");
                        break;
                    }
                }
            }
        }

        // Delete the DB cluster parameter group. rds.DeleteDbClusterParameterGroup.
        let delete_db_cluster_parameter_group = self
            .rds
            .delete_db_cluster_parameter_group(
                self.db_cluster_parameter_group
                    .map(|g| {
                        g.db_cluster_parameter_group_name
                            .unwrap_or_else(|| DB_CLUSTER_PARAMETER_GROUP_NAME.to_string())
                    })
                    .as_deref()
                    .expect("cluster parameter group name"),
            )
            .await;
        if let Err(error) = delete_db_cluster_parameter_group {
            clean_up_errors.push(ScenarioError::new(
                "Failed to delete the db cluster parameter group",
                &error,
            ))
        }

        if clean_up_errors.is_empty() {
            Ok(())
        } else {
            Err(clean_up_errors)
        }
    }
}

#[cfg(test)]
pub mod tests;

RDS Client ラッパーの周りのオートモックを使用してライブラリをテストします。

use crate::rds::MockRdsImpl;

use super::*;

use std::io::{Error, ErrorKind};

use assert_matches::assert_matches;
use aws_sdk_rds::{
    error::SdkError,
    operation::{
        create_db_cluster::{CreateDBClusterError, CreateDbClusterOutput},
        create_db_cluster_parameter_group::CreateDBClusterParameterGroupError,
        create_db_cluster_snapshot::{CreateDBClusterSnapshotError, CreateDbClusterSnapshotOutput},
        create_db_instance::{CreateDBInstanceError, CreateDbInstanceOutput},
        delete_db_cluster::DeleteDbClusterOutput,
        delete_db_cluster_parameter_group::DeleteDbClusterParameterGroupOutput,
        delete_db_instance::DeleteDbInstanceOutput,
        describe_db_cluster_endpoints::DescribeDbClusterEndpointsOutput,
        describe_db_cluster_parameters::{
            DescribeDBClusterParametersError, DescribeDbClusterParametersOutput,
        },
        describe_db_clusters::{DescribeDBClustersError, DescribeDbClustersOutput},
        describe_db_engine_versions::{
            DescribeDBEngineVersionsError, DescribeDbEngineVersionsOutput,
        },
        describe_db_instances::{DescribeDBInstancesError, DescribeDbInstancesOutput},
        describe_orderable_db_instance_options::DescribeOrderableDBInstanceOptionsError,
        modify_db_cluster_parameter_group::{
            ModifyDBClusterParameterGroupError, ModifyDbClusterParameterGroupOutput,
        },
    },
    types::{
        error::DbParameterGroupAlreadyExistsFault, DbClusterEndpoint, DbEngineVersion,
        OrderableDbInstanceOption,
    },
};
use aws_smithy_runtime_api::http::{Response, StatusCode};
use aws_smithy_types::body::SdkBody;
use mockall::predicate::eq;
use secrecy::ExposeSecret;

#[tokio::test]
async fn test_scenario_set_engine() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster_parameter_group()
        .with(
            eq("RustSDKCodeExamplesDBParameterGroup"),
            eq("Parameter Group created by Rust SDK Code Example"),
            eq("aurora-mysql"),
        )
        .return_once(|_, _, _| {
            Ok(CreateDbClusterParameterGroupOutput::builder()
                .db_cluster_parameter_group(DbClusterParameterGroup::builder().build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);

    let set_engine = scenario.set_engine("aurora-mysql", "aurora-mysql8.0").await;

    assert_eq!(set_engine, Ok(()));
    assert_eq!(Some("aurora-mysql"), scenario.engine_family.as_deref());
    assert_eq!(Some("aurora-mysql8.0"), scenario.engine_version.as_deref());
}

#[tokio::test]
async fn test_scenario_set_engine_not_create() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster_parameter_group()
        .with(
            eq("RustSDKCodeExamplesDBParameterGroup"),
            eq("Parameter Group created by Rust SDK Code Example"),
            eq("aurora-mysql"),
        )
        .return_once(|_, _, _| Ok(CreateDbClusterParameterGroupOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);

    let set_engine = scenario.set_engine("aurora-mysql", "aurora-mysql8.0").await;

    assert!(set_engine.is_err());
}

#[tokio::test]
async fn test_scenario_set_engine_param_group_exists() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster_parameter_group()
        .withf(|_, _, _| true)
        .return_once(|_, _, _| {
            Err(SdkError::service_error(
                CreateDBClusterParameterGroupError::DbParameterGroupAlreadyExistsFault(
                    DbParameterGroupAlreadyExistsFault::builder().build(),
                ),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);

    let set_engine = scenario.set_engine("aurora-mysql", "aurora-mysql8.0").await;

    assert!(set_engine.is_err());
}

#[tokio::test]
async fn test_scenario_get_engines() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_describe_db_engine_versions()
        .with(eq("aurora-mysql"))
        .return_once(|_| {
            Ok(DescribeDbEngineVersionsOutput::builder()
                .db_engine_versions(
                    DbEngineVersion::builder()
                        .db_parameter_group_family("f1")
                        .engine_version("f1a")
                        .build(),
                )
                .db_engine_versions(
                    DbEngineVersion::builder()
                        .db_parameter_group_family("f1")
                        .engine_version("f1b")
                        .build(),
                )
                .db_engine_versions(
                    DbEngineVersion::builder()
                        .db_parameter_group_family("f2")
                        .engine_version("f2a")
                        .build(),
                )
                .db_engine_versions(DbEngineVersion::builder().build())
                .build())
        });

    let scenario = AuroraScenario::new(mock_rds);

    let versions_map = scenario.get_engines().await;

    assert_eq!(
        versions_map,
        Ok(HashMap::from([
            ("f1".into(), vec!["f1a".into(), "f1b".into()]),
            ("f2".into(), vec!["f2a".into()])
        ]))
    );
}

#[tokio::test]
async fn test_scenario_get_engines_failed() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_describe_db_engine_versions()
        .with(eq("aurora-mysql"))
        .return_once(|_| {
            Err(SdkError::service_error(
                DescribeDBEngineVersionsError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe_db_engine_versions error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let scenario = AuroraScenario::new(mock_rds);

    let versions_map = scenario.get_engines().await;
    assert_matches!(
        versions_map,
        Err(ScenarioError { message, context: _ }) if message == "Failed to retrieve DB Engine Versions"
    );
}

#[tokio::test]
async fn test_scenario_get_instance_classes() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster_parameter_group()
        .return_once(|_, _, _| {
            Ok(CreateDbClusterParameterGroupOutput::builder()
                .db_cluster_parameter_group(DbClusterParameterGroup::builder().build())
                .build())
        });

    mock_rds
        .expect_describe_orderable_db_instance_options()
        .with(eq("aurora-mysql"), eq("aurora-mysql8.0"))
        .return_once(|_, _| {
            Ok(vec![
                OrderableDbInstanceOption::builder()
                    .db_instance_class("t1")
                    .storage_type("aurora")
                    .build(),
                OrderableDbInstanceOption::builder()
                    .db_instance_class("t1")
                    .storage_type("aurora-iopt1")
                    .build(),
                OrderableDbInstanceOption::builder()
                    .db_instance_class("t2")
                    .storage_type("aurora")
                    .build(),
                OrderableDbInstanceOption::builder()
                    .db_instance_class("t3")
                    .storage_type("aurora")
                    .build(),
            ])
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario
        .set_engine("aurora-mysql", "aurora-mysql8.0")
        .await
        .expect("set engine");

    let instance_classes = scenario.get_instance_classes().await;

    assert_eq!(
        instance_classes,
        Ok(vec!["t1".into(), "t2".into(), "t3".into()])
    );
}

#[tokio::test]
async fn test_scenario_get_instance_classes_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_describe_orderable_db_instance_options()
        .with(eq("aurora-mysql"), eq("aurora-mysql8.0"))
        .return_once(|_, _| {
            Err(SdkError::service_error(
                DescribeOrderableDBInstanceOptionsError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe_orderable_db_instance_options_error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_family = Some("aurora-mysql".into());
    scenario.engine_version = Some("aurora-mysql8.0".into());

    let instance_classes = scenario.get_instance_classes().await;

    assert_matches!(
        instance_classes,
        Err(ScenarioError {message, context: _}) if message == "Could not get available instance classes"
    );
}

#[tokio::test]
async fn test_scenario_get_cluster() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|_| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(DbCluster::builder().build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some("RustSDKCodeExamplesDBCluster".into());
    let cluster = scenario.get_cluster().await;

    assert!(cluster.is_ok());
}

#[tokio::test]
async fn test_scenario_get_cluster_missing_cluster() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster_parameter_group()
        .return_once(|_, _, _| {
            Ok(CreateDbClusterParameterGroupOutput::builder()
                .db_cluster_parameter_group(DbClusterParameterGroup::builder().build())
                .build())
        });

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|_| Ok(DescribeDbClustersOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some("RustSDKCodeExamplesDBCluster".into());
    let cluster = scenario.get_cluster().await;

    assert_matches!(cluster, Err(ScenarioError { message, context: _ }) if message == "Did not find the cluster");
}

#[tokio::test]
async fn test_scenario_get_cluster_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster_parameter_group()
        .return_once(|_, _, _| {
            Ok(CreateDbClusterParameterGroupOutput::builder()
                .db_cluster_parameter_group(DbClusterParameterGroup::builder().build())
                .build())
        });

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|_| {
            Err(SdkError::service_error(
                DescribeDBClustersError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe_db_clusters_error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some("RustSDKCodeExamplesDBCluster".into());
    let cluster = scenario.get_cluster().await;

    assert_matches!(cluster, Err(ScenarioError { message, context: _ }) if message == "Failed to get cluster");
}

#[tokio::test]
async fn test_scenario_connection_string() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|_| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(
                    DbCluster::builder()
                        .endpoint("test_endpoint")
                        .port(3306)
                        .master_username("test_username")
                        .build(),
                )
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some("RustSDKCodeExamplesDBCluster".into());
    let connection_string = scenario.connection_string().await;

    assert_eq!(
        connection_string,
        Ok("mysql -h test_endpoint -P 3306 -u test_username -p".into())
    );
}

#[tokio::test]
async fn test_scenario_cluster_parameters() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_describe_db_cluster_parameters()
        .with(eq("RustSDKCodeExamplesDBParameterGroup"))
        .return_once(|_| {
            Ok(vec![DescribeDbClusterParametersOutput::builder()
                .parameters(Parameter::builder().parameter_name("a").build())
                .parameters(Parameter::builder().parameter_name("b").build())
                .parameters(
                    Parameter::builder()
                        .parameter_name("auto_increment_offset")
                        .build(),
                )
                .parameters(Parameter::builder().parameter_name("c").build())
                .parameters(
                    Parameter::builder()
                        .parameter_name("auto_increment_increment")
                        .build(),
                )
                .parameters(Parameter::builder().parameter_name("d").build())
                .build()])
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some("RustSDKCodeExamplesDBCluster".into());

    let params = scenario.cluster_parameters().await.expect("cluster params");
    let names: Vec<String> = params.into_iter().map(|p| p.name).collect();
    assert_eq!(
        names,
        vec!["auto_increment_offset", "auto_increment_increment"]
    );
}

#[tokio::test]
async fn test_scenario_cluster_parameters_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_describe_db_cluster_parameters()
        .with(eq("RustSDKCodeExamplesDBParameterGroup"))
        .return_once(|_| {
            Err(SdkError::service_error(
                DescribeDBClusterParametersError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe_db_cluster_parameters_error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some("RustSDKCodeExamplesDBCluster".into());
    let params = scenario.cluster_parameters().await;
    assert_matches!(params, Err(ScenarioError { message, context: _ }) if message == "Failed to retrieve parameters for RustSDKCodeExamplesDBParameterGroup");
}

#[tokio::test]
async fn test_scenario_update_auto_increment() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_modify_db_cluster_parameter_group()
        .withf(|name, params| {
            assert_eq!(name, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(
                params,
                &vec![
                    Parameter::builder()
                        .parameter_name("auto_increment_offset")
                        .parameter_value("10")
                        .apply_method(aws_sdk_rds::types::ApplyMethod::Immediate)
                        .build(),
                    Parameter::builder()
                        .parameter_name("auto_increment_increment")
                        .parameter_value("20")
                        .apply_method(aws_sdk_rds::types::ApplyMethod::Immediate)
                        .build(),
                ]
            );
            true
        })
        .return_once(|_, _| Ok(ModifyDbClusterParameterGroupOutput::builder().build()));

    let scenario = AuroraScenario::new(mock_rds);

    scenario
        .update_auto_increment(10, 20)
        .await
        .expect("update auto increment");
}

#[tokio::test]
async fn test_scenario_update_auto_increment_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_modify_db_cluster_parameter_group()
        .return_once(|_, _| {
            Err(SdkError::service_error(
                ModifyDBClusterParameterGroupError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "modify_db_cluster_parameter_group_error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let scenario = AuroraScenario::new(mock_rds);

    let update = scenario.update_auto_increment(10, 20).await;
    assert_matches!(update, Err(ScenarioError { message, context: _}) if message == "Failed to modify cluster parameter group");
}

#[tokio::test]
async fn test_start_cluster_and_instance() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .withf(|cluster, name, class, engine| {
            assert_eq!(cluster, "RustSDKCodeExamplesDBCluster");
            assert_eq!(name, "RustSDKCodeExamplesDBInstance");
            assert_eq!(class, "m5.large");
            assert_eq!(engine, "aurora-mysql");
            true
        })
        .return_once(|cluster, name, class, _| {
            Ok(CreateDbInstanceOutput::builder()
                .db_instance(
                    DbInstance::builder()
                        .db_cluster_identifier(cluster)
                        .db_instance_identifier(name)
                        .db_instance_class(class)
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_describe_db_instance()
        .with(eq("RustSDKCodeExamplesDBInstance"))
        .return_once(|name| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_instance_identifier(name)
                        .db_instance_status("Available")
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_cluster_endpoints()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|_| {
            Ok(DescribeDbClusterEndpointsOutput::builder()
                .db_cluster_endpoints(DbClusterEndpoint::builder().status("available").build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let create = scenario.start_cluster_and_instance().await;
        assert!(create.is_ok());
        assert!(scenario
            .password
            .replace(SecretString::new("BAD SECRET".into()))
            .unwrap()
            .expose_secret()
            .is_empty());
        assert_eq!(
            scenario.db_cluster_identifier,
            Some("RustSDKCodeExamplesDBCluster".into())
        );
    });
    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::resume();
    let _ = assertions.await;
}

#[tokio::test]
async fn test_start_cluster_and_instance_cluster_create_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .return_once(|_, _, _, _, _, _| {
            Err(SdkError::service_error(
                CreateDBClusterError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "create db cluster error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context: _}) if message == "Failed to create DB Cluster with cluster group")
}

#[tokio::test]
async fn test_start_cluster_and_instance_cluster_create_missing_id() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .return_once(|_, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context:_ }) if message == "Created DB Cluster missing Identifier");
}

#[tokio::test]
async fn test_start_cluster_and_instance_instance_create_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .return_once(|_, _, _, _| {
            Err(SdkError::service_error(
                CreateDBInstanceError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "create db instance error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context: _ }) if message == "Failed to create Instance in DB Cluster")
}

#[tokio::test]
async fn test_start_cluster_and_instance_wait_hiccup() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .withf(|cluster, name, class, engine| {
            assert_eq!(cluster, "RustSDKCodeExamplesDBCluster");
            assert_eq!(name, "RustSDKCodeExamplesDBInstance");
            assert_eq!(class, "m5.large");
            assert_eq!(engine, "aurora-mysql");
            true
        })
        .return_once(|cluster, name, class, _| {
            Ok(CreateDbInstanceOutput::builder()
                .db_instance(
                    DbInstance::builder()
                        .db_cluster_identifier(cluster)
                        .db_instance_identifier(name)
                        .db_instance_class(class)
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .times(1)
        .returning(|_| {
            Err(SdkError::service_error(
                DescribeDBClustersError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe cluster error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        })
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds.expect_describe_db_instance().return_once(|name| {
        Ok(DescribeDbInstancesOutput::builder()
            .db_instances(
                DbInstance::builder()
                    .db_instance_identifier(name)
                    .db_instance_status("Available")
                    .build(),
            )
            .build())
    });

    mock_rds
        .expect_describe_db_cluster_endpoints()
        .return_once(|_| {
            Ok(DescribeDbClusterEndpointsOutput::builder()
                .db_cluster_endpoints(DbClusterEndpoint::builder().status("available").build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let create = scenario.start_cluster_and_instance().await;
        assert!(create.is_ok());
    });

    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::resume();
    let _ = assertions.await;
}

#[tokio::test]
async fn test_scenario_clean_up() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_delete_db_instance()
        .with(eq("MockInstance"))
        .return_once(|_| Ok(DeleteDbInstanceOutput::builder().build()));

    mock_rds
        .expect_describe_db_instances()
        .with()
        .times(1)
        .returning(|| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_cluster_identifier("MockCluster")
                        .db_instance_status("Deleting")
                        .build(),
                )
                .build())
        })
        .with()
        .times(1)
        .returning(|| Ok(DescribeDbInstancesOutput::builder().build()));

    mock_rds
        .expect_delete_db_cluster()
        .with(eq("MockCluster"))
        .return_once(|_| Ok(DeleteDbClusterOutput::builder().build()));

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("MockCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(
                    DbCluster::builder()
                        .db_cluster_identifier(id)
                        .status("Deleting")
                        .build(),
                )
                .build())
        })
        .with(eq("MockCluster"))
        .times(1)
        .returning(|_| Ok(DescribeDbClustersOutput::builder().build()));

    mock_rds
        .expect_delete_db_cluster_parameter_group()
        .with(eq("MockParamGroup"))
        .return_once(|_| Ok(DeleteDbClusterParameterGroupOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some(String::from("MockCluster"));
    scenario.db_instance_identifier = Some(String::from("MockInstance"));
    scenario.db_cluster_parameter_group = Some(
        DbClusterParameterGroup::builder()
            .db_cluster_parameter_group_name("MockParamGroup")
            .build(),
    );

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let clean_up = scenario.clean_up().await;
        assert!(clean_up.is_ok());
    });

    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Cluster
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Cluster
    tokio::time::resume();
    let _ = assertions.await;
}

#[tokio::test]
async fn test_scenario_clean_up_errors() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_delete_db_instance()
        .with(eq("MockInstance"))
        .return_once(|_| Ok(DeleteDbInstanceOutput::builder().build()));

    mock_rds
        .expect_describe_db_instances()
        .with()
        .times(1)
        .returning(|| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_cluster_identifier("MockCluster")
                        .db_instance_status("Deleting")
                        .build(),
                )
                .build())
        })
        .with()
        .times(1)
        .returning(|| {
            Err(SdkError::service_error(
                DescribeDBInstancesError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe db instances error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    mock_rds
        .expect_delete_db_cluster()
        .with(eq("MockCluster"))
        .return_once(|_| Ok(DeleteDbClusterOutput::builder().build()));

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("MockCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(
                    DbCluster::builder()
                        .db_cluster_identifier(id)
                        .status("Deleting")
                        .build(),
                )
                .build())
        })
        .with(eq("MockCluster"))
        .times(1)
        .returning(|_| {
            Err(SdkError::service_error(
                DescribeDBClustersError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe db clusters error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    mock_rds
        .expect_delete_db_cluster_parameter_group()
        .with(eq("MockParamGroup"))
        .return_once(|_| Ok(DeleteDbClusterParameterGroupOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some(String::from("MockCluster"));
    scenario.db_instance_identifier = Some(String::from("MockInstance"));
    scenario.db_cluster_parameter_group = Some(
        DbClusterParameterGroup::builder()
            .db_cluster_parameter_group_name("MockParamGroup")
            .build(),
    );

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let clean_up = scenario.clean_up().await;
        assert!(clean_up.is_err());
        let errs = clean_up.unwrap_err();
        assert_eq!(errs.len(), 2);
        assert_matches!(errs.first(), Some(ScenarioError {message, context: _}) if message == "Failed to check instance state during deletion");
        assert_matches!(errs.get(1), Some(ScenarioError {message, context: _}) if message == "Failed to check cluster state during deletion");
    });

    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Cluster
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Cluster
    tokio::time::resume();
    let _ = assertions.await;
}

#[tokio::test]
async fn test_scenario_snapshot() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_snapshot_cluster()
        .with(eq("MockCluster"), eq("MockCluster_MockSnapshot"))
        .times(1)
        .return_once(|_, _| {
            Ok(CreateDbClusterSnapshotOutput::builder()
                .db_cluster_snapshot(
                    DbClusterSnapshot::builder()
                        .db_cluster_identifier("MockCluster")
                        .db_cluster_snapshot_identifier("MockCluster_MockSnapshot")
                        .build(),
                )
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some("MockCluster".into());
    let create_snapshot = scenario.snapshot("MockSnapshot").await;
    assert!(create_snapshot.is_ok());
}

#[tokio::test]
async fn test_scenario_snapshot_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_snapshot_cluster()
        .with(eq("MockCluster"), eq("MockCluster_MockSnapshot"))
        .times(1)
        .return_once(|_, _| {
            Err(SdkError::service_error(
                CreateDBClusterSnapshotError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "create snapshot error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some("MockCluster".into());
    let create_snapshot = scenario.snapshot("MockSnapshot").await;
    assert_matches!(create_snapshot, Err(ScenarioError { message, context: _}) if message == "Failed to create snapshot");
}

#[tokio::test]
async fn test_scenario_snapshot_invalid() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_snapshot_cluster()
        .with(eq("MockCluster"), eq("MockCluster_MockSnapshot"))
        .times(1)
        .return_once(|_, _| Ok(CreateDbClusterSnapshotOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some("MockCluster".into());
    let create_snapshot = scenario.snapshot("MockSnapshot").await;
    assert_matches!(create_snapshot, Err(ScenarioError { message, context: _}) if message == "Missing Snapshot");
}

ユーザーが一部の決定を下せるように inquirer を使用してシナリオを最初から最後まで実行するためのバイナリ。

use std::fmt::Display;

use anyhow::anyhow;
use aurora_code_examples::{
    aurora_scenario::{AuroraScenario, ScenarioError},
    rds::Rds as RdsClient,
};
use aws_sdk_rds::Client;
use inquire::{validator::StringValidator, CustomUserError};
use secrecy::SecretString;
use tracing::warn;

#[derive(Default, Debug)]
struct Warnings(Vec<String>);

impl Warnings {
    fn new() -> Self {
        Warnings(Vec::with_capacity(5))
    }

    fn push(&mut self, warning: &str, error: ScenarioError) {
        let formatted = format!("{warning}: {error}");
        warn!("{formatted}");
        self.0.push(formatted);
    }

    fn is_empty(&self) -> bool {
        self.0.is_empty()
    }
}

impl Display for Warnings {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        writeln!(f, "Warnings:")?;
        for warning in &self.0 {
            writeln!(f, "{: >4}- {warning}", "")?;
        }
        Ok(())
    }
}

fn select(
    prompt: &str,
    choices: Vec<String>,
    error_message: &str,
) -> Result<String, anyhow::Error> {
    inquire::Select::new(prompt, choices)
        .prompt()
        .map_err(|error| anyhow!("{error_message}: {error}"))
}

// Prepare the Aurora Scenario. Prompt for several settings that are optional to the Scenario, but that the user should choose for the demo.
// This includes the engine, engine version, and instance class.
async fn prepare_scenario(rds: RdsClient) -> Result<AuroraScenario, anyhow::Error> {
    let mut scenario = AuroraScenario::new(rds);

    // Get available engine families for Aurora MySql. rds.DescribeDbEngineVersions(Engine='aurora-mysql') and build a set of the 'DBParameterGroupFamily' field values. I get {aurora-mysql8.0, aurora-mysql5.7}.
    let available_engines = scenario.get_engines().await;
    if let Err(error) = available_engines {
        return Err(anyhow!("Failed to get available engines: {}", error));
    }
    let available_engines = available_engines.unwrap();

    // Select an engine family and create a custom DB cluster parameter group. rds.CreateDbClusterParameterGroup(DBParameterGroupFamily='aurora-mysql8.0')
    let engine = select(
        "Select an Aurora engine family",
        available_engines.keys().cloned().collect::<Vec<String>>(),
        "Invalid engine selection",
    )?;

    let version = select(
        format!("Select an Aurora engine version for {engine}").as_str(),
        available_engines.get(&engine).cloned().unwrap_or_default(),
        "Invalid engine version selection",
    )?;

    let set_engine = scenario.set_engine(engine.as_str(), version.as_str()).await;
    if let Err(error) = set_engine {
        return Err(anyhow!("Could not set engine: {}", error));
    }

    let instance_classes = scenario.get_instance_classes().await;
    match instance_classes {
        Ok(classes) => {
            let instance_class = select(
                format!("Select an Aurora instance class for {engine}").as_str(),
                classes,
                "Invalid instance class selection",
            )?;
            scenario.set_instance_class(Some(instance_class))
        }
        Err(err) => return Err(anyhow!("Failed to get instance classes for engine: {err}")),
    }

    Ok(scenario)
}

// Prepare the cluster, creating a custom parameter group overriding some group parameters based on user input.
async fn prepare_cluster(scenario: &mut AuroraScenario, warnings: &mut Warnings) -> Result<(), ()> {
    show_parameters(scenario, warnings).await;

    let offset = prompt_number_or_default(warnings, "auto_increment_offset", 5);
    let increment = prompt_number_or_default(warnings, "auto_increment_increment", 3);

    // Modify both the auto_increment_offset and auto_increment_increment parameters in one call in the custom parameter group. Set their ParameterValue fields to a new allowable value. rds.ModifyDbClusterParameterGroup.
    let update_auto_increment = scenario.update_auto_increment(offset, increment).await;

    if let Err(error) = update_auto_increment {
        warnings.push("Failed to update auto increment", error);
        return Err(());
    }

    // Get and display the updated parameters. Specify Source of 'user' to get just the modified parameters. rds.DescribeDbClusterParameters(Source='user')
    show_parameters(scenario, warnings).await;

    let username = inquire::Text::new("Username for the database (default 'testuser')")
        .with_default("testuser")
        .with_initial_value("testuser")
        .prompt();

    if let Err(error) = username {
        warnings.push(
            "Failed to get username, using default",
            ScenarioError::with(format!("Error from inquirer: {error}")),
        );
        return Err(());
    }
    let username = username.unwrap();

    let password = inquire::Text::new("Password for the database (minimum 8 characters)")
        .with_validator(|i: &str| {
            if i.len() >= 8 {
                Ok(inquire::validator::Validation::Valid)
            } else {
                Ok(inquire::validator::Validation::Invalid(
                    "Password must be at least 8 characters".into(),
                ))
            }
        })
        .prompt();

    let password: Option<SecretString> = match password {
        Ok(password) => Some(SecretString::from(password)),
        Err(error) => {
            warnings.push(
                "Failed to get password, using none (and not starting a DB)",
                ScenarioError::with(format!("Error from inquirer: {error}")),
            );
            return Err(());
        }
    };

    scenario.set_login(Some(username), password);

    Ok(())
}

// Start a single instance in the cluster,
async fn run_instance(scenario: &mut AuroraScenario) -> Result<(), ScenarioError> {
    // Create an Aurora DB cluster database cluster that contains a MySql database and uses the parameter group you created.
    // Create a database instance in the cluster.
    // Wait for DB instance to be ready. Call rds.DescribeDbInstances and check for DBInstanceStatus == 'available'.
    scenario.start_cluster_and_instance().await?;

    let connection_string = scenario.connection_string().await?;

    println!("Database ready: {connection_string}",);

    let _ = inquire::Text::new("Use the database with the connection string. When you're finished, press enter key to continue.").prompt();

    // Create a snapshot of the DB cluster. rds.CreateDbClusterSnapshot.
    // Wait for the snapshot to create. rds.DescribeDbClusterSnapshots until Status == 'available'.
    let snapshot_name = inquire::Text::new("Provide a name for the snapshot")
        .prompt()
        .unwrap_or(String::from("ScenarioRun"));
    let snapshot = scenario.snapshot(snapshot_name.as_str()).await?;
    println!(
        "Snapshot is available: {}",
        snapshot.db_cluster_snapshot_arn().unwrap_or("Missing ARN")
    );

    Ok(())
}

#[tokio::main]
async fn main() -> Result<(), anyhow::Error> {
    tracing_subscriber::fmt::init();
    let sdk_config = aws_config::from_env().load().await;
    let client = Client::new(&sdk_config);
    let rds = RdsClient::new(client);
    let mut scenario = prepare_scenario(rds).await?;

    // At this point, the scenario has things in AWS and needs to get cleaned up.
    let mut warnings = Warnings::new();

    if prepare_cluster(&mut scenario, &mut warnings).await.is_ok() {
        println!("Configured database cluster, starting an instance.");
        if let Err(err) = run_instance(&mut scenario).await {
            warnings.push("Problem running instance", err);
        }
    }

    // Clean up the instance, cluster, and parameter group, waiting for the instance and cluster to delete before moving on.
    let clean_up = scenario.clean_up().await;
    if let Err(errors) = clean_up {
        for error in errors {
            warnings.push("Problem cleaning up scenario", error);
        }
    }

    if warnings.is_empty() {
        Ok(())
    } else {
        println!("There were problems running the scenario:");
        println!("{warnings}");
        Err(anyhow!("There were problems running the scenario"))
    }
}

#[derive(Clone)]
struct U8Validator {}
impl StringValidator for U8Validator {
    fn validate(&self, input: &str) -> Result<inquire::validator::Validation, CustomUserError> {
        if input.parse::<u8>().is_err() {
            Ok(inquire::validator::Validation::Invalid(
                "Can't parse input as number".into(),
            ))
        } else {
            Ok(inquire::validator::Validation::Valid)
        }
    }
}

async fn show_parameters(scenario: &AuroraScenario, warnings: &mut Warnings) {
    let parameters = scenario.cluster_parameters().await;

    match parameters {
        Ok(parameters) => {
            println!("Current parameters");
            for parameter in parameters {
                println!("\t{parameter}");
            }
        }
        Err(error) => warnings.push("Could not find cluster parameters", error),
    }
}

fn prompt_number_or_default(warnings: &mut Warnings, name: &str, default: u8) -> u8 {
    let input = inquire::Text::new(format!("Updated {name}:").as_str())
        .with_validator(U8Validator {})
        .prompt();

    match input {
        Ok(increment) => match increment.parse::<u8>() {
            Ok(increment) => increment,
            Err(error) => {
                warnings.push(
                    format!("Invalid updated {name} (using {default} instead)").as_str(),
                    ScenarioError::with(format!("{error}")),
                );
                default
            }
        },
        Err(error) => {
            warnings.push(
                format!("Invalid updated {name} (using {default} instead)").as_str(),
                ScenarioError::with(format!("{error}")),
            );
            default
        }
    }
}

テストの自動モッキングを許可する Amazon RDS サービスのラッパー。

use aws_sdk_rds::{
    error::SdkError,
    operation::{
        create_db_cluster::{CreateDBClusterError, CreateDbClusterOutput},
        create_db_cluster_parameter_group::CreateDBClusterParameterGroupError,
        create_db_cluster_parameter_group::CreateDbClusterParameterGroupOutput,
        create_db_cluster_snapshot::{CreateDBClusterSnapshotError, CreateDbClusterSnapshotOutput},
        create_db_instance::{CreateDBInstanceError, CreateDbInstanceOutput},
        delete_db_cluster::{DeleteDBClusterError, DeleteDbClusterOutput},
        delete_db_cluster_parameter_group::{
            DeleteDBClusterParameterGroupError, DeleteDbClusterParameterGroupOutput,
        },
        delete_db_instance::{DeleteDBInstanceError, DeleteDbInstanceOutput},
        describe_db_cluster_endpoints::{
            DescribeDBClusterEndpointsError, DescribeDbClusterEndpointsOutput,
        },
        describe_db_cluster_parameters::{
            DescribeDBClusterParametersError, DescribeDbClusterParametersOutput,
        },
        describe_db_clusters::{DescribeDBClustersError, DescribeDbClustersOutput},
        describe_db_engine_versions::{
            DescribeDBEngineVersionsError, DescribeDbEngineVersionsOutput,
        },
        describe_db_instances::{DescribeDBInstancesError, DescribeDbInstancesOutput},
        describe_orderable_db_instance_options::DescribeOrderableDBInstanceOptionsError,
        modify_db_cluster_parameter_group::{
            ModifyDBClusterParameterGroupError, ModifyDbClusterParameterGroupOutput,
        },
    },
    types::{OrderableDbInstanceOption, Parameter},
    Client as RdsClient,
};
use secrecy::{ExposeSecret, SecretString};

#[cfg(test)]
use mockall::automock;

#[cfg(test)]
pub use MockRdsImpl as Rds;
#[cfg(not(test))]
pub use RdsImpl as Rds;

pub struct RdsImpl {
    pub inner: RdsClient,
}

#[cfg_attr(test, automock)]
impl RdsImpl {
    pub fn new(inner: RdsClient) -> Self {
        RdsImpl { inner }
    }

    pub async fn describe_db_engine_versions(
        &self,
        engine: &str,
    ) -> Result<DescribeDbEngineVersionsOutput, SdkError<DescribeDBEngineVersionsError>> {
        self.inner
            .describe_db_engine_versions()
            .engine(engine)
            .send()
            .await
    }

    pub async fn describe_orderable_db_instance_options(
        &self,
        engine: &str,
        engine_version: &str,
    ) -> Result<Vec<OrderableDbInstanceOption>, SdkError<DescribeOrderableDBInstanceOptionsError>>
    {
        self.inner
            .describe_orderable_db_instance_options()
            .engine(engine)
            .engine_version(engine_version)
            .into_paginator()
            .items()
            .send()
            .try_collect()
            .await
    }

    pub async fn create_db_cluster_parameter_group(
        &self,
        name: &str,
        description: &str,
        family: &str,
    ) -> Result<CreateDbClusterParameterGroupOutput, SdkError<CreateDBClusterParameterGroupError>>
    {
        self.inner
            .create_db_cluster_parameter_group()
            .db_cluster_parameter_group_name(name)
            .description(description)
            .db_parameter_group_family(family)
            .send()
            .await
    }

    pub async fn describe_db_clusters(
        &self,
        id: &str,
    ) -> Result<DescribeDbClustersOutput, SdkError<DescribeDBClustersError>> {
        self.inner
            .describe_db_clusters()
            .db_cluster_identifier(id)
            .send()
            .await
    }

    pub async fn describe_db_cluster_parameters(
        &self,
        name: &str,
    ) -> Result<Vec<DescribeDbClusterParametersOutput>, SdkError<DescribeDBClusterParametersError>>
    {
        self.inner
            .describe_db_cluster_parameters()
            .db_cluster_parameter_group_name(name)
            .into_paginator()
            .send()
            .try_collect()
            .await
    }

    pub async fn modify_db_cluster_parameter_group(
        &self,
        name: &str,
        parameters: Vec<Parameter>,
    ) -> Result<ModifyDbClusterParameterGroupOutput, SdkError<ModifyDBClusterParameterGroupError>>
    {
        self.inner
            .modify_db_cluster_parameter_group()
            .db_cluster_parameter_group_name(name)
            .set_parameters(Some(parameters))
            .send()
            .await
    }

    pub async fn create_db_cluster(
        &self,
        name: &str,
        parameter_group: &str,
        engine: &str,
        version: &str,
        username: &str,
        password: SecretString,
    ) -> Result<CreateDbClusterOutput, SdkError<CreateDBClusterError>> {
        self.inner
            .create_db_cluster()
            .db_cluster_identifier(name)
            .db_cluster_parameter_group_name(parameter_group)
            .engine(engine)
            .engine_version(version)
            .master_username(username)
            .master_user_password(password.expose_secret())
            .send()
            .await
    }

    pub async fn create_db_instance(
        &self,
        cluster_name: &str,
        instance_name: &str,
        instance_class: &str,
        engine: &str,
    ) -> Result<CreateDbInstanceOutput, SdkError<CreateDBInstanceError>> {
        self.inner
            .create_db_instance()
            .db_cluster_identifier(cluster_name)
            .db_instance_identifier(instance_name)
            .db_instance_class(instance_class)
            .engine(engine)
            .send()
            .await
    }

    pub async fn describe_db_instance(
        &self,
        instance_identifier: &str,
    ) -> Result<DescribeDbInstancesOutput, SdkError<DescribeDBInstancesError>> {
        self.inner
            .describe_db_instances()
            .db_instance_identifier(instance_identifier)
            .send()
            .await
    }

    pub async fn snapshot_cluster(
        &self,
        db_cluster_identifier: &str,
        snapshot_name: &str,
    ) -> Result<CreateDbClusterSnapshotOutput, SdkError<CreateDBClusterSnapshotError>> {
        self.inner
            .create_db_cluster_snapshot()
            .db_cluster_identifier(db_cluster_identifier)
            .db_cluster_snapshot_identifier(snapshot_name)
            .send()
            .await
    }

    pub async fn describe_db_instances(
        &self,
    ) -> Result<DescribeDbInstancesOutput, SdkError<DescribeDBInstancesError>> {
        self.inner.describe_db_instances().send().await
    }

    pub async fn describe_db_cluster_endpoints(
        &self,
        cluster_identifier: &str,
    ) -> Result<DescribeDbClusterEndpointsOutput, SdkError<DescribeDBClusterEndpointsError>> {
        self.inner
            .describe_db_cluster_endpoints()
            .db_cluster_identifier(cluster_identifier)
            .send()
            .await
    }

    pub async fn delete_db_instance(
        &self,
        instance_identifier: &str,
    ) -> Result<DeleteDbInstanceOutput, SdkError<DeleteDBInstanceError>> {
        self.inner
            .delete_db_instance()
            .db_instance_identifier(instance_identifier)
            .skip_final_snapshot(true)
            .send()
            .await
    }

    pub async fn delete_db_cluster(
        &self,
        cluster_identifier: &str,
    ) -> Result<DeleteDbClusterOutput, SdkError<DeleteDBClusterError>> {
        self.inner
            .delete_db_cluster()
            .db_cluster_identifier(cluster_identifier)
            .skip_final_snapshot(true)
            .send()
            .await
    }

    pub async fn delete_db_cluster_parameter_group(
        &self,
        name: &str,
    ) -> Result<DeleteDbClusterParameterGroupOutput, SdkError<DeleteDBClusterParameterGroupError>>
    {
        self.inner
            .delete_db_cluster_parameter_group()
            .db_cluster_parameter_group_name(name)
            .send()
            .await
    }
}

このシナリオで使用した依存関係を含む Cargo.toml。

[package]
name = "aurora-code-examples"
authors = [
  "David Souther <dpsouth@amazon.com>", 
]
edition = "2021"
version = "0.1.0"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
anyhow = "1.0.75"
assert_matches = "1.5.0"
aws-config = { version = "1.0.1", features = ["behavior-version-latest"] }
aws-smithy-types = { version = "1.0.1" }
aws-smithy-runtime-api = { version = "1.0.1" }
aws-sdk-rds = { version = "1.3.0" }
inquire = "0.6.2"
mockall = "0.11.4"
phf = { version = "0.11.2", features = ["std", "macros"] }
sdk-examples-test-utils = { path = "../../test-utils" }
secrecy = "0.8.0"
tokio = { version = "1.20.1", features = ["full", "test-util"] }
tracing = "0.1.37"
tracing-subscriber = { version = "0.3.15", features = ["env-filter"] }

    // Get a list of allowed engine versions. rds.DescribeDbEngineVersions(Engine='aurora-mysql', DBParameterGroupFamily=<the family used to create your parameter group in step 2>)
    // Create an Aurora DB cluster database cluster that contains a MySql database and uses the parameter group you created.
    // Wait for DB cluster to be ready. Call rds.DescribeDBClusters and check for Status == 'available'.
    // Get a list of instance classes available for the selected engine and engine version. rds.DescribeOrderableDbInstanceOptions(Engine='mysql', EngineVersion=).

    // Create a database instance in the cluster.
    // Wait for DB instance to be ready. Call rds.DescribeDbInstances and check for DBInstanceStatus == 'available'.
    pub async fn start_cluster_and_instance(&mut self) -> Result<(), ScenarioError> {
        if self.password.is_none() {
            return Err(ScenarioError::with(
                "Must set Secret Password before starting a cluster",
            ));
        }
        let create_db_cluster = self
            .rds
            .create_db_cluster(
                DB_CLUSTER_IDENTIFIER,
                DB_CLUSTER_PARAMETER_GROUP_NAME,
                DB_ENGINE,
                self.engine_version.as_deref().expect("engine version"),
                self.username.as_deref().expect("username"),
                self.password
                    .replace(SecretString::new("".to_string()))
                    .expect("password"),
            )
            .await;
        if let Err(err) = create_db_cluster {
            return Err(ScenarioError::new(
                "Failed to create DB Cluster with cluster group",
                &err,
            ));
        }

        self.db_cluster_identifier = create_db_cluster
            .unwrap()
            .db_cluster
            .and_then(|c| c.db_cluster_identifier);

        if self.db_cluster_identifier.is_none() {
            return Err(ScenarioError::with("Created DB Cluster missing Identifier"));
        }

        info!(
            "Started a db cluster: {}",
            self.db_cluster_identifier
                .as_deref()
                .unwrap_or("Missing ARN")
        );

        let create_db_instance = self
            .rds
            .create_db_instance(
                self.db_cluster_identifier.as_deref().expect("cluster name"),
                DB_INSTANCE_IDENTIFIER,
                self.instance_class.as_deref().expect("instance class"),
                DB_ENGINE,
            )
            .await;
        if let Err(err) = create_db_instance {
            return Err(ScenarioError::new(
                "Failed to create Instance in DB Cluster",
                &err,
            ));
        }

        self.db_instance_identifier = create_db_instance
            .unwrap()
            .db_instance
            .and_then(|i| i.db_instance_identifier);

        // Cluster creation can take up to 20 minutes to become available
        let cluster_max_wait = Duration::from_secs(20 * 60);
        let waiter = Waiter::builder().max(cluster_max_wait).build();
        while waiter.sleep().await.is_ok() {
            let cluster = self
                .rds
                .describe_db_clusters(
                    self.db_cluster_identifier
                        .as_deref()
                        .expect("cluster identifier"),
                )
                .await;

            if let Err(err) = cluster {
                warn!(?err, "Failed to describe cluster while waiting for ready");
                continue;
            }

            let instance = self
                .rds
                .describe_db_instance(
                    self.db_instance_identifier
                        .as_deref()
                        .expect("instance identifier"),
                )
                .await;
            if let Err(err) = instance {
                return Err(ScenarioError::new(
                    "Failed to find instance for cluster",
                    &err,
                ));
            }

            let instances_available = instance
                .unwrap()
                .db_instances()
                .iter()
                .all(|instance| instance.db_instance_status() == Some("Available"));

            let endpoints = self
                .rds
                .describe_db_cluster_endpoints(
                    self.db_cluster_identifier
                        .as_deref()
                        .expect("cluster identifier"),
                )
                .await;

            if let Err(err) = endpoints {
                return Err(ScenarioError::new(
                    "Failed to find endpoint for cluster",
                    &err,
                ));
            }

            let endpoints_available = endpoints
                .unwrap()
                .db_cluster_endpoints()
                .iter()
                .all(|endpoint| endpoint.status() == Some("available"));

            if instances_available && endpoints_available {
                return Ok(());
            }
        }

        Err(ScenarioError::with("timed out waiting for cluster"))
    }

    pub async fn create_db_cluster(
        &self,
        name: &str,
        parameter_group: &str,
        engine: &str,
        version: &str,
        username: &str,
        password: SecretString,
    ) -> Result<CreateDbClusterOutput, SdkError<CreateDBClusterError>> {
        self.inner
            .create_db_cluster()
            .db_cluster_identifier(name)
            .db_cluster_parameter_group_name(parameter_group)
            .engine(engine)
            .engine_version(version)
            .master_username(username)
            .master_user_password(password.expose_secret())
            .send()
            .await
    }

#[tokio::test]
async fn test_start_cluster_and_instance() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .withf(|cluster, name, class, engine| {
            assert_eq!(cluster, "RustSDKCodeExamplesDBCluster");
            assert_eq!(name, "RustSDKCodeExamplesDBInstance");
            assert_eq!(class, "m5.large");
            assert_eq!(engine, "aurora-mysql");
            true
        })
        .return_once(|cluster, name, class, _| {
            Ok(CreateDbInstanceOutput::builder()
                .db_instance(
                    DbInstance::builder()
                        .db_cluster_identifier(cluster)
                        .db_instance_identifier(name)
                        .db_instance_class(class)
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_describe_db_instance()
        .with(eq("RustSDKCodeExamplesDBInstance"))
        .return_once(|name| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_instance_identifier(name)
                        .db_instance_status("Available")
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_cluster_endpoints()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|_| {
            Ok(DescribeDbClusterEndpointsOutput::builder()
                .db_cluster_endpoints(DbClusterEndpoint::builder().status("available").build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let create = scenario.start_cluster_and_instance().await;
        assert!(create.is_ok());
        assert!(scenario
            .password
            .replace(SecretString::new("BAD SECRET".into()))
            .unwrap()
            .expose_secret()
            .is_empty());
        assert_eq!(
            scenario.db_cluster_identifier,
            Some("RustSDKCodeExamplesDBCluster".into())
        );
    });
    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::resume();
    let _ = assertions.await;
}

#[tokio::test]
async fn test_start_cluster_and_instance_cluster_create_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .return_once(|_, _, _, _, _, _| {
            Err(SdkError::service_error(
                CreateDBClusterError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "create db cluster error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context: _}) if message == "Failed to create DB Cluster with cluster group")
}

#[tokio::test]
async fn test_start_cluster_and_instance_cluster_create_missing_id() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .return_once(|_, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context:_ }) if message == "Created DB Cluster missing Identifier");
}

#[tokio::test]
async fn test_start_cluster_and_instance_instance_create_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .return_once(|_, _, _, _| {
            Err(SdkError::service_error(
                CreateDBInstanceError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "create db instance error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context: _ }) if message == "Failed to create Instance in DB Cluster")
}

#[tokio::test]
async fn test_start_cluster_and_instance_wait_hiccup() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .withf(|cluster, name, class, engine| {
            assert_eq!(cluster, "RustSDKCodeExamplesDBCluster");
            assert_eq!(name, "RustSDKCodeExamplesDBInstance");
            assert_eq!(class, "m5.large");
            assert_eq!(engine, "aurora-mysql");
            true
        })
        .return_once(|cluster, name, class, _| {
            Ok(CreateDbInstanceOutput::builder()
                .db_instance(
                    DbInstance::builder()
                        .db_cluster_identifier(cluster)
                        .db_instance_identifier(name)
                        .db_instance_class(class)
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .times(1)
        .returning(|_| {
            Err(SdkError::service_error(
                DescribeDBClustersError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe cluster error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        })
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds.expect_describe_db_instance().return_once(|name| {
        Ok(DescribeDbInstancesOutput::builder()
            .db_instances(
                DbInstance::builder()
                    .db_instance_identifier(name)
                    .db_instance_status("Available")
                    .build(),
            )
            .build())
    });

    mock_rds
        .expect_describe_db_cluster_endpoints()
        .return_once(|_| {
            Ok(DescribeDbClusterEndpointsOutput::builder()
                .db_cluster_endpoints(DbClusterEndpoint::builder().status("available").build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let create = scenario.start_cluster_and_instance().await;
        assert!(create.is_ok());
    });

    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::resume();
    let _ = assertions.await;
}

    // Select an engine family and create a custom DB cluster parameter group. rds.CreateDbClusterParameterGroup(DBParameterGroupFamily='aurora-mysql8.0')
    pub async fn set_engine(&mut self, engine: &str, version: &str) -> Result<(), ScenarioError> {
        self.engine_family = Some(engine.to_string());
        self.engine_version = Some(version.to_string());
        let create_db_cluster_parameter_group = self
            .rds
            .create_db_cluster_parameter_group(
                DB_CLUSTER_PARAMETER_GROUP_NAME,
                DB_CLUSTER_PARAMETER_GROUP_DESCRIPTION,
                engine,
            )
            .await;

        match create_db_cluster_parameter_group {
            Ok(CreateDbClusterParameterGroupOutput {
                db_cluster_parameter_group: None,
                ..
            }) => {
                return Err(ScenarioError::with(
                    "CreateDBClusterParameterGroup had empty response",
                ));
            }
            Err(error) => {
                if error.code() == Some("DBParameterGroupAlreadyExists") {
                    info!("Cluster Parameter Group already exists, nothing to do");
                } else {
                    return Err(ScenarioError::new(
                        "Could not create Cluster Parameter Group",
                        &error,
                    ));
                }
            }
            _ => {
                info!("Created Cluster Parameter Group");
            }
        }

        Ok(())
    }

    pub async fn create_db_cluster_parameter_group(
        &self,
        name: &str,
        description: &str,
        family: &str,
    ) -> Result<CreateDbClusterParameterGroupOutput, SdkError<CreateDBClusterParameterGroupError>>
    {
        self.inner
            .create_db_cluster_parameter_group()
            .db_cluster_parameter_group_name(name)
            .description(description)
            .db_parameter_group_family(family)
            .send()
            .await
    }

#[tokio::test]
async fn test_scenario_set_engine() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster_parameter_group()
        .with(
            eq("RustSDKCodeExamplesDBParameterGroup"),
            eq("Parameter Group created by Rust SDK Code Example"),
            eq("aurora-mysql"),
        )
        .return_once(|_, _, _| {
            Ok(CreateDbClusterParameterGroupOutput::builder()
                .db_cluster_parameter_group(DbClusterParameterGroup::builder().build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);

    let set_engine = scenario.set_engine("aurora-mysql", "aurora-mysql8.0").await;

    assert_eq!(set_engine, Ok(()));
    assert_eq!(Some("aurora-mysql"), scenario.engine_family.as_deref());
    assert_eq!(Some("aurora-mysql8.0"), scenario.engine_version.as_deref());
}

#[tokio::test]
async fn test_scenario_set_engine_not_create() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster_parameter_group()
        .with(
            eq("RustSDKCodeExamplesDBParameterGroup"),
            eq("Parameter Group created by Rust SDK Code Example"),
            eq("aurora-mysql"),
        )
        .return_once(|_, _, _| Ok(CreateDbClusterParameterGroupOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);

    let set_engine = scenario.set_engine("aurora-mysql", "aurora-mysql8.0").await;

    assert!(set_engine.is_err());
}

#[tokio::test]
async fn test_scenario_set_engine_param_group_exists() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster_parameter_group()
        .withf(|_, _, _| true)
        .return_once(|_, _, _| {
            Err(SdkError::service_error(
                CreateDBClusterParameterGroupError::DbParameterGroupAlreadyExistsFault(
                    DbParameterGroupAlreadyExistsFault::builder().build(),
                ),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);

    let set_engine = scenario.set_engine("aurora-mysql", "aurora-mysql8.0").await;

    assert!(set_engine.is_err());
}

    // Get a list of allowed engine versions. rds.DescribeDbEngineVersions(Engine='aurora-mysql', DBParameterGroupFamily=<the family used to create your parameter group in step 2>)
    // Create an Aurora DB cluster database cluster that contains a MySql database and uses the parameter group you created.
    // Wait for DB cluster to be ready. Call rds.DescribeDBClusters and check for Status == 'available'.
    // Get a list of instance classes available for the selected engine and engine version. rds.DescribeOrderableDbInstanceOptions(Engine='mysql', EngineVersion=).

    // Create a database instance in the cluster.
    // Wait for DB instance to be ready. Call rds.DescribeDbInstances and check for DBInstanceStatus == 'available'.
    pub async fn start_cluster_and_instance(&mut self) -> Result<(), ScenarioError> {
        if self.password.is_none() {
            return Err(ScenarioError::with(
                "Must set Secret Password before starting a cluster",
            ));
        }
        let create_db_cluster = self
            .rds
            .create_db_cluster(
                DB_CLUSTER_IDENTIFIER,
                DB_CLUSTER_PARAMETER_GROUP_NAME,
                DB_ENGINE,
                self.engine_version.as_deref().expect("engine version"),
                self.username.as_deref().expect("username"),
                self.password
                    .replace(SecretString::new("".to_string()))
                    .expect("password"),
            )
            .await;
        if let Err(err) = create_db_cluster {
            return Err(ScenarioError::new(
                "Failed to create DB Cluster with cluster group",
                &err,
            ));
        }

        self.db_cluster_identifier = create_db_cluster
            .unwrap()
            .db_cluster
            .and_then(|c| c.db_cluster_identifier);

        if self.db_cluster_identifier.is_none() {
            return Err(ScenarioError::with("Created DB Cluster missing Identifier"));
        }

        info!(
            "Started a db cluster: {}",
            self.db_cluster_identifier
                .as_deref()
                .unwrap_or("Missing ARN")
        );

        let create_db_instance = self
            .rds
            .create_db_instance(
                self.db_cluster_identifier.as_deref().expect("cluster name"),
                DB_INSTANCE_IDENTIFIER,
                self.instance_class.as_deref().expect("instance class"),
                DB_ENGINE,
            )
            .await;
        if let Err(err) = create_db_instance {
            return Err(ScenarioError::new(
                "Failed to create Instance in DB Cluster",
                &err,
            ));
        }

        self.db_instance_identifier = create_db_instance
            .unwrap()
            .db_instance
            .and_then(|i| i.db_instance_identifier);

        // Cluster creation can take up to 20 minutes to become available
        let cluster_max_wait = Duration::from_secs(20 * 60);
        let waiter = Waiter::builder().max(cluster_max_wait).build();
        while waiter.sleep().await.is_ok() {
            let cluster = self
                .rds
                .describe_db_clusters(
                    self.db_cluster_identifier
                        .as_deref()
                        .expect("cluster identifier"),
                )
                .await;

            if let Err(err) = cluster {
                warn!(?err, "Failed to describe cluster while waiting for ready");
                continue;
            }

            let instance = self
                .rds
                .describe_db_instance(
                    self.db_instance_identifier
                        .as_deref()
                        .expect("instance identifier"),
                )
                .await;
            if let Err(err) = instance {
                return Err(ScenarioError::new(
                    "Failed to find instance for cluster",
                    &err,
                ));
            }

            let instances_available = instance
                .unwrap()
                .db_instances()
                .iter()
                .all(|instance| instance.db_instance_status() == Some("Available"));

            let endpoints = self
                .rds
                .describe_db_cluster_endpoints(
                    self.db_cluster_identifier
                        .as_deref()
                        .expect("cluster identifier"),
                )
                .await;

            if let Err(err) = endpoints {
                return Err(ScenarioError::new(
                    "Failed to find endpoint for cluster",
                    &err,
                ));
            }

            let endpoints_available = endpoints
                .unwrap()
                .db_cluster_endpoints()
                .iter()
                .all(|endpoint| endpoint.status() == Some("available"));

            if instances_available && endpoints_available {
                return Ok(());
            }
        }

        Err(ScenarioError::with("timed out waiting for cluster"))
    }

    pub async fn snapshot_cluster(
        &self,
        db_cluster_identifier: &str,
        snapshot_name: &str,
    ) -> Result<CreateDbClusterSnapshotOutput, SdkError<CreateDBClusterSnapshotError>> {
        self.inner
            .create_db_cluster_snapshot()
            .db_cluster_identifier(db_cluster_identifier)
            .db_cluster_snapshot_identifier(snapshot_name)
            .send()
            .await
    }

#[tokio::test]
async fn test_start_cluster_and_instance() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .withf(|cluster, name, class, engine| {
            assert_eq!(cluster, "RustSDKCodeExamplesDBCluster");
            assert_eq!(name, "RustSDKCodeExamplesDBInstance");
            assert_eq!(class, "m5.large");
            assert_eq!(engine, "aurora-mysql");
            true
        })
        .return_once(|cluster, name, class, _| {
            Ok(CreateDbInstanceOutput::builder()
                .db_instance(
                    DbInstance::builder()
                        .db_cluster_identifier(cluster)
                        .db_instance_identifier(name)
                        .db_instance_class(class)
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_describe_db_instance()
        .with(eq("RustSDKCodeExamplesDBInstance"))
        .return_once(|name| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_instance_identifier(name)
                        .db_instance_status("Available")
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_cluster_endpoints()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|_| {
            Ok(DescribeDbClusterEndpointsOutput::builder()
                .db_cluster_endpoints(DbClusterEndpoint::builder().status("available").build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let create = scenario.start_cluster_and_instance().await;
        assert!(create.is_ok());
        assert!(scenario
            .password
            .replace(SecretString::new("BAD SECRET".into()))
            .unwrap()
            .expose_secret()
            .is_empty());
        assert_eq!(
            scenario.db_cluster_identifier,
            Some("RustSDKCodeExamplesDBCluster".into())
        );
    });
    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::resume();
    let _ = assertions.await;
}

#[tokio::test]
async fn test_start_cluster_and_instance_cluster_create_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .return_once(|_, _, _, _, _, _| {
            Err(SdkError::service_error(
                CreateDBClusterError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "create db cluster error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context: _}) if message == "Failed to create DB Cluster with cluster group")
}

#[tokio::test]
async fn test_start_cluster_and_instance_cluster_create_missing_id() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .return_once(|_, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context:_ }) if message == "Created DB Cluster missing Identifier");
}

#[tokio::test]
async fn test_start_cluster_and_instance_instance_create_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .return_once(|_, _, _, _| {
            Err(SdkError::service_error(
                CreateDBInstanceError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "create db instance error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context: _ }) if message == "Failed to create Instance in DB Cluster")
}

#[tokio::test]
async fn test_start_cluster_and_instance_wait_hiccup() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .withf(|cluster, name, class, engine| {
            assert_eq!(cluster, "RustSDKCodeExamplesDBCluster");
            assert_eq!(name, "RustSDKCodeExamplesDBInstance");
            assert_eq!(class, "m5.large");
            assert_eq!(engine, "aurora-mysql");
            true
        })
        .return_once(|cluster, name, class, _| {
            Ok(CreateDbInstanceOutput::builder()
                .db_instance(
                    DbInstance::builder()
                        .db_cluster_identifier(cluster)
                        .db_instance_identifier(name)
                        .db_instance_class(class)
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .times(1)
        .returning(|_| {
            Err(SdkError::service_error(
                DescribeDBClustersError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe cluster error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        })
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds.expect_describe_db_instance().return_once(|name| {
        Ok(DescribeDbInstancesOutput::builder()
            .db_instances(
                DbInstance::builder()
                    .db_instance_identifier(name)
                    .db_instance_status("Available")
                    .build(),
            )
            .build())
    });

    mock_rds
        .expect_describe_db_cluster_endpoints()
        .return_once(|_| {
            Ok(DescribeDbClusterEndpointsOutput::builder()
                .db_cluster_endpoints(DbClusterEndpoint::builder().status("available").build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let create = scenario.start_cluster_and_instance().await;
        assert!(create.is_ok());
    });

    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::resume();
    let _ = assertions.await;
}

    // Get a list of allowed engine versions. rds.DescribeDbEngineVersions(Engine='aurora-mysql', DBParameterGroupFamily=<the family used to create your parameter group in step 2>)
    // Create an Aurora DB cluster database cluster that contains a MySql database and uses the parameter group you created.
    // Wait for DB cluster to be ready. Call rds.DescribeDBClusters and check for Status == 'available'.
    // Get a list of instance classes available for the selected engine and engine version. rds.DescribeOrderableDbInstanceOptions(Engine='mysql', EngineVersion=).

    // Create a database instance in the cluster.
    // Wait for DB instance to be ready. Call rds.DescribeDbInstances and check for DBInstanceStatus == 'available'.
    pub async fn start_cluster_and_instance(&mut self) -> Result<(), ScenarioError> {
        if self.password.is_none() {
            return Err(ScenarioError::with(
                "Must set Secret Password before starting a cluster",
            ));
        }
        let create_db_cluster = self
            .rds
            .create_db_cluster(
                DB_CLUSTER_IDENTIFIER,
                DB_CLUSTER_PARAMETER_GROUP_NAME,
                DB_ENGINE,
                self.engine_version.as_deref().expect("engine version"),
                self.username.as_deref().expect("username"),
                self.password
                    .replace(SecretString::new("".to_string()))
                    .expect("password"),
            )
            .await;
        if let Err(err) = create_db_cluster {
            return Err(ScenarioError::new(
                "Failed to create DB Cluster with cluster group",
                &err,
            ));
        }

        self.db_cluster_identifier = create_db_cluster
            .unwrap()
            .db_cluster
            .and_then(|c| c.db_cluster_identifier);

        if self.db_cluster_identifier.is_none() {
            return Err(ScenarioError::with("Created DB Cluster missing Identifier"));
        }

        info!(
            "Started a db cluster: {}",
            self.db_cluster_identifier
                .as_deref()
                .unwrap_or("Missing ARN")
        );

        let create_db_instance = self
            .rds
            .create_db_instance(
                self.db_cluster_identifier.as_deref().expect("cluster name"),
                DB_INSTANCE_IDENTIFIER,
                self.instance_class.as_deref().expect("instance class"),
                DB_ENGINE,
            )
            .await;
        if let Err(err) = create_db_instance {
            return Err(ScenarioError::new(
                "Failed to create Instance in DB Cluster",
                &err,
            ));
        }

        self.db_instance_identifier = create_db_instance
            .unwrap()
            .db_instance
            .and_then(|i| i.db_instance_identifier);

        // Cluster creation can take up to 20 minutes to become available
        let cluster_max_wait = Duration::from_secs(20 * 60);
        let waiter = Waiter::builder().max(cluster_max_wait).build();
        while waiter.sleep().await.is_ok() {
            let cluster = self
                .rds
                .describe_db_clusters(
                    self.db_cluster_identifier
                        .as_deref()
                        .expect("cluster identifier"),
                )
                .await;

            if let Err(err) = cluster {
                warn!(?err, "Failed to describe cluster while waiting for ready");
                continue;
            }

            let instance = self
                .rds
                .describe_db_instance(
                    self.db_instance_identifier
                        .as_deref()
                        .expect("instance identifier"),
                )
                .await;
            if let Err(err) = instance {
                return Err(ScenarioError::new(
                    "Failed to find instance for cluster",
                    &err,
                ));
            }

            let instances_available = instance
                .unwrap()
                .db_instances()
                .iter()
                .all(|instance| instance.db_instance_status() == Some("Available"));

            let endpoints = self
                .rds
                .describe_db_cluster_endpoints(
                    self.db_cluster_identifier
                        .as_deref()
                        .expect("cluster identifier"),
                )
                .await;

            if let Err(err) = endpoints {
                return Err(ScenarioError::new(
                    "Failed to find endpoint for cluster",
                    &err,
                ));
            }

            let endpoints_available = endpoints
                .unwrap()
                .db_cluster_endpoints()
                .iter()
                .all(|endpoint| endpoint.status() == Some("available"));

            if instances_available && endpoints_available {
                return Ok(());
            }
        }

        Err(ScenarioError::with("timed out waiting for cluster"))
    }

    pub async fn create_db_instance(
        &self,
        cluster_name: &str,
        instance_name: &str,
        instance_class: &str,
        engine: &str,
    ) -> Result<CreateDbInstanceOutput, SdkError<CreateDBInstanceError>> {
        self.inner
            .create_db_instance()
            .db_cluster_identifier(cluster_name)
            .db_instance_identifier(instance_name)
            .db_instance_class(instance_class)
            .engine(engine)
            .send()
            .await
    }

#[tokio::test]
async fn test_start_cluster_and_instance() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .withf(|cluster, name, class, engine| {
            assert_eq!(cluster, "RustSDKCodeExamplesDBCluster");
            assert_eq!(name, "RustSDKCodeExamplesDBInstance");
            assert_eq!(class, "m5.large");
            assert_eq!(engine, "aurora-mysql");
            true
        })
        .return_once(|cluster, name, class, _| {
            Ok(CreateDbInstanceOutput::builder()
                .db_instance(
                    DbInstance::builder()
                        .db_cluster_identifier(cluster)
                        .db_instance_identifier(name)
                        .db_instance_class(class)
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_describe_db_instance()
        .with(eq("RustSDKCodeExamplesDBInstance"))
        .return_once(|name| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_instance_identifier(name)
                        .db_instance_status("Available")
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_cluster_endpoints()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|_| {
            Ok(DescribeDbClusterEndpointsOutput::builder()
                .db_cluster_endpoints(DbClusterEndpoint::builder().status("available").build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let create = scenario.start_cluster_and_instance().await;
        assert!(create.is_ok());
        assert!(scenario
            .password
            .replace(SecretString::new("BAD SECRET".into()))
            .unwrap()
            .expose_secret()
            .is_empty());
        assert_eq!(
            scenario.db_cluster_identifier,
            Some("RustSDKCodeExamplesDBCluster".into())
        );
    });
    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::resume();
    let _ = assertions.await;
}

#[tokio::test]
async fn test_start_cluster_and_instance_cluster_create_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .return_once(|_, _, _, _, _, _| {
            Err(SdkError::service_error(
                CreateDBClusterError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "create db cluster error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context: _}) if message == "Failed to create DB Cluster with cluster group")
}

#[tokio::test]
async fn test_start_cluster_and_instance_cluster_create_missing_id() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .return_once(|_, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context:_ }) if message == "Created DB Cluster missing Identifier");
}

#[tokio::test]
async fn test_start_cluster_and_instance_instance_create_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .return_once(|_, _, _, _| {
            Err(SdkError::service_error(
                CreateDBInstanceError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "create db instance error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context: _ }) if message == "Failed to create Instance in DB Cluster")
}

#[tokio::test]
async fn test_start_cluster_and_instance_wait_hiccup() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .withf(|cluster, name, class, engine| {
            assert_eq!(cluster, "RustSDKCodeExamplesDBCluster");
            assert_eq!(name, "RustSDKCodeExamplesDBInstance");
            assert_eq!(class, "m5.large");
            assert_eq!(engine, "aurora-mysql");
            true
        })
        .return_once(|cluster, name, class, _| {
            Ok(CreateDbInstanceOutput::builder()
                .db_instance(
                    DbInstance::builder()
                        .db_cluster_identifier(cluster)
                        .db_instance_identifier(name)
                        .db_instance_class(class)
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .times(1)
        .returning(|_| {
            Err(SdkError::service_error(
                DescribeDBClustersError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe cluster error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        })
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds.expect_describe_db_instance().return_once(|name| {
        Ok(DescribeDbInstancesOutput::builder()
            .db_instances(
                DbInstance::builder()
                    .db_instance_identifier(name)
                    .db_instance_status("Available")
                    .build(),
            )
            .build())
    });

    mock_rds
        .expect_describe_db_cluster_endpoints()
        .return_once(|_| {
            Ok(DescribeDbClusterEndpointsOutput::builder()
                .db_cluster_endpoints(DbClusterEndpoint::builder().status("available").build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let create = scenario.start_cluster_and_instance().await;
        assert!(create.is_ok());
    });

    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::resume();
    let _ = assertions.await;
}

    pub async fn clean_up(self) -> Result<(), Vec<ScenarioError>> {
        let mut clean_up_errors: Vec<ScenarioError> = vec![];

        // Delete the instance. rds.DeleteDbInstance.
        let delete_db_instance = self
            .rds
            .delete_db_instance(
                self.db_instance_identifier
                    .as_deref()
                    .expect("instance identifier"),
            )
            .await;
        if let Err(err) = delete_db_instance {
            let identifier = self
                .db_instance_identifier
                .as_deref()
                .unwrap_or("Missing Instance Identifier");
            let message = format!("failed to delete db instance {identifier}");
            clean_up_errors.push(ScenarioError::new(message, &err));
        } else {
            // Wait for the instance to delete
            let waiter = Waiter::default();
            while waiter.sleep().await.is_ok() {
                let describe_db_instances = self.rds.describe_db_instances().await;
                if let Err(err) = describe_db_instances {
                    clean_up_errors.push(ScenarioError::new(
                        "Failed to check instance state during deletion",
                        &err,
                    ));
                    break;
                }
                let db_instances = describe_db_instances
                    .unwrap()
                    .db_instances()
                    .iter()
                    .filter(|instance| instance.db_cluster_identifier == self.db_cluster_identifier)
                    .cloned()
                    .collect::<Vec<DbInstance>>();

                if db_instances.is_empty() {
                    trace!("Delete Instance waited and no instances were found");
                    break;
                }
                match db_instances.first().unwrap().db_instance_status() {
                    Some("Deleting") => continue,
                    Some(status) => {
                        info!("Attempting to delete but instances is in {status}");
                        continue;
                    }
                    None => {
                        warn!("No status for DB instance");
                        break;
                    }
                }
            }
        }

        // Delete the DB cluster. rds.DeleteDbCluster.
        let delete_db_cluster = self
            .rds
            .delete_db_cluster(
                self.db_cluster_identifier
                    .as_deref()
                    .expect("cluster identifier"),
            )
            .await;

        if let Err(err) = delete_db_cluster {
            let identifier = self
                .db_cluster_identifier
                .as_deref()
                .unwrap_or("Missing DB Cluster Identifier");
            let message = format!("failed to delete db cluster {identifier}");
            clean_up_errors.push(ScenarioError::new(message, &err));
        } else {
            // Wait for the instance and cluster to fully delete. rds.DescribeDbInstances and rds.DescribeDbClusters until both are not found.
            let waiter = Waiter::default();
            while waiter.sleep().await.is_ok() {
                let describe_db_clusters = self
                    .rds
                    .describe_db_clusters(
                        self.db_cluster_identifier
                            .as_deref()
                            .expect("cluster identifier"),
                    )
                    .await;
                if let Err(err) = describe_db_clusters {
                    clean_up_errors.push(ScenarioError::new(
                        "Failed to check cluster state during deletion",
                        &err,
                    ));
                    break;
                }
                let describe_db_clusters = describe_db_clusters.unwrap();
                let db_clusters = describe_db_clusters.db_clusters();
                if db_clusters.is_empty() {
                    trace!("Delete cluster waited and no clusters were found");
                    break;
                }
                match db_clusters.first().unwrap().status() {
                    Some("Deleting") => continue,
                    Some(status) => {
                        info!("Attempting to delete but clusters is in {status}");
                        continue;
                    }
                    None => {
                        warn!("No status for DB cluster");
                        break;
                    }
                }
            }
        }

        // Delete the DB cluster parameter group. rds.DeleteDbClusterParameterGroup.
        let delete_db_cluster_parameter_group = self
            .rds
            .delete_db_cluster_parameter_group(
                self.db_cluster_parameter_group
                    .map(|g| {
                        g.db_cluster_parameter_group_name
                            .unwrap_or_else(|| DB_CLUSTER_PARAMETER_GROUP_NAME.to_string())
                    })
                    .as_deref()
                    .expect("cluster parameter group name"),
            )
            .await;
        if let Err(error) = delete_db_cluster_parameter_group {
            clean_up_errors.push(ScenarioError::new(
                "Failed to delete the db cluster parameter group",
                &error,
            ))
        }

        if clean_up_errors.is_empty() {
            Ok(())
        } else {
            Err(clean_up_errors)
        }
    }

    pub async fn delete_db_cluster(
        &self,
        cluster_identifier: &str,
    ) -> Result<DeleteDbClusterOutput, SdkError<DeleteDBClusterError>> {
        self.inner
            .delete_db_cluster()
            .db_cluster_identifier(cluster_identifier)
            .skip_final_snapshot(true)
            .send()
            .await
    }

#[tokio::test]
async fn test_scenario_clean_up() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_delete_db_instance()
        .with(eq("MockInstance"))
        .return_once(|_| Ok(DeleteDbInstanceOutput::builder().build()));

    mock_rds
        .expect_describe_db_instances()
        .with()
        .times(1)
        .returning(|| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_cluster_identifier("MockCluster")
                        .db_instance_status("Deleting")
                        .build(),
                )
                .build())
        })
        .with()
        .times(1)
        .returning(|| Ok(DescribeDbInstancesOutput::builder().build()));

    mock_rds
        .expect_delete_db_cluster()
        .with(eq("MockCluster"))
        .return_once(|_| Ok(DeleteDbClusterOutput::builder().build()));

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("MockCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(
                    DbCluster::builder()
                        .db_cluster_identifier(id)
                        .status("Deleting")
                        .build(),
                )
                .build())
        })
        .with(eq("MockCluster"))
        .times(1)
        .returning(|_| Ok(DescribeDbClustersOutput::builder().build()));

    mock_rds
        .expect_delete_db_cluster_parameter_group()
        .with(eq("MockParamGroup"))
        .return_once(|_| Ok(DeleteDbClusterParameterGroupOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some(String::from("MockCluster"));
    scenario.db_instance_identifier = Some(String::from("MockInstance"));
    scenario.db_cluster_parameter_group = Some(
        DbClusterParameterGroup::builder()
            .db_cluster_parameter_group_name("MockParamGroup")
            .build(),
    );

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let clean_up = scenario.clean_up().await;
        assert!(clean_up.is_ok());
    });

    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Cluster
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Cluster
    tokio::time::resume();
    let _ = assertions.await;
}

#[tokio::test]
async fn test_scenario_clean_up_errors() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_delete_db_instance()
        .with(eq("MockInstance"))
        .return_once(|_| Ok(DeleteDbInstanceOutput::builder().build()));

    mock_rds
        .expect_describe_db_instances()
        .with()
        .times(1)
        .returning(|| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_cluster_identifier("MockCluster")
                        .db_instance_status("Deleting")
                        .build(),
                )
                .build())
        })
        .with()
        .times(1)
        .returning(|| {
            Err(SdkError::service_error(
                DescribeDBInstancesError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe db instances error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    mock_rds
        .expect_delete_db_cluster()
        .with(eq("MockCluster"))
        .return_once(|_| Ok(DeleteDbClusterOutput::builder().build()));

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("MockCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(
                    DbCluster::builder()
                        .db_cluster_identifier(id)
                        .status("Deleting")
                        .build(),
                )
                .build())
        })
        .with(eq("MockCluster"))
        .times(1)
        .returning(|_| {
            Err(SdkError::service_error(
                DescribeDBClustersError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe db clusters error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    mock_rds
        .expect_delete_db_cluster_parameter_group()
        .with(eq("MockParamGroup"))
        .return_once(|_| Ok(DeleteDbClusterParameterGroupOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some(String::from("MockCluster"));
    scenario.db_instance_identifier = Some(String::from("MockInstance"));
    scenario.db_cluster_parameter_group = Some(
        DbClusterParameterGroup::builder()
            .db_cluster_parameter_group_name("MockParamGroup")
            .build(),
    );

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let clean_up = scenario.clean_up().await;
        assert!(clean_up.is_err());
        let errs = clean_up.unwrap_err();
        assert_eq!(errs.len(), 2);
        assert_matches!(errs.first(), Some(ScenarioError {message, context: _}) if message == "Failed to check instance state during deletion");
        assert_matches!(errs.get(1), Some(ScenarioError {message, context: _}) if message == "Failed to check cluster state during deletion");
    });

    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Cluster
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Cluster
    tokio::time::resume();
    let _ = assertions.await;
}

    pub async fn clean_up(self) -> Result<(), Vec<ScenarioError>> {
        let mut clean_up_errors: Vec<ScenarioError> = vec![];

        // Delete the instance. rds.DeleteDbInstance.
        let delete_db_instance = self
            .rds
            .delete_db_instance(
                self.db_instance_identifier
                    .as_deref()
                    .expect("instance identifier"),
            )
            .await;
        if let Err(err) = delete_db_instance {
            let identifier = self
                .db_instance_identifier
                .as_deref()
                .unwrap_or("Missing Instance Identifier");
            let message = format!("failed to delete db instance {identifier}");
            clean_up_errors.push(ScenarioError::new(message, &err));
        } else {
            // Wait for the instance to delete
            let waiter = Waiter::default();
            while waiter.sleep().await.is_ok() {
                let describe_db_instances = self.rds.describe_db_instances().await;
                if let Err(err) = describe_db_instances {
                    clean_up_errors.push(ScenarioError::new(
                        "Failed to check instance state during deletion",
                        &err,
                    ));
                    break;
                }
                let db_instances = describe_db_instances
                    .unwrap()
                    .db_instances()
                    .iter()
                    .filter(|instance| instance.db_cluster_identifier == self.db_cluster_identifier)
                    .cloned()
                    .collect::<Vec<DbInstance>>();

                if db_instances.is_empty() {
                    trace!("Delete Instance waited and no instances were found");
                    break;
                }
                match db_instances.first().unwrap().db_instance_status() {
                    Some("Deleting") => continue,
                    Some(status) => {
                        info!("Attempting to delete but instances is in {status}");
                        continue;
                    }
                    None => {
                        warn!("No status for DB instance");
                        break;
                    }
                }
            }
        }

        // Delete the DB cluster. rds.DeleteDbCluster.
        let delete_db_cluster = self
            .rds
            .delete_db_cluster(
                self.db_cluster_identifier
                    .as_deref()
                    .expect("cluster identifier"),
            )
            .await;

        if let Err(err) = delete_db_cluster {
            let identifier = self
                .db_cluster_identifier
                .as_deref()
                .unwrap_or("Missing DB Cluster Identifier");
            let message = format!("failed to delete db cluster {identifier}");
            clean_up_errors.push(ScenarioError::new(message, &err));
        } else {
            // Wait for the instance and cluster to fully delete. rds.DescribeDbInstances and rds.DescribeDbClusters until both are not found.
            let waiter = Waiter::default();
            while waiter.sleep().await.is_ok() {
                let describe_db_clusters = self
                    .rds
                    .describe_db_clusters(
                        self.db_cluster_identifier
                            .as_deref()
                            .expect("cluster identifier"),
                    )
                    .await;
                if let Err(err) = describe_db_clusters {
                    clean_up_errors.push(ScenarioError::new(
                        "Failed to check cluster state during deletion",
                        &err,
                    ));
                    break;
                }
                let describe_db_clusters = describe_db_clusters.unwrap();
                let db_clusters = describe_db_clusters.db_clusters();
                if db_clusters.is_empty() {
                    trace!("Delete cluster waited and no clusters were found");
                    break;
                }
                match db_clusters.first().unwrap().status() {
                    Some("Deleting") => continue,
                    Some(status) => {
                        info!("Attempting to delete but clusters is in {status}");
                        continue;
                    }
                    None => {
                        warn!("No status for DB cluster");
                        break;
                    }
                }
            }
        }

        // Delete the DB cluster parameter group. rds.DeleteDbClusterParameterGroup.
        let delete_db_cluster_parameter_group = self
            .rds
            .delete_db_cluster_parameter_group(
                self.db_cluster_parameter_group
                    .map(|g| {
                        g.db_cluster_parameter_group_name
                            .unwrap_or_else(|| DB_CLUSTER_PARAMETER_GROUP_NAME.to_string())
                    })
                    .as_deref()
                    .expect("cluster parameter group name"),
            )
            .await;
        if let Err(error) = delete_db_cluster_parameter_group {
            clean_up_errors.push(ScenarioError::new(
                "Failed to delete the db cluster parameter group",
                &error,
            ))
        }

        if clean_up_errors.is_empty() {
            Ok(())
        } else {
            Err(clean_up_errors)
        }
    }

    pub async fn delete_db_cluster_parameter_group(
        &self,
        name: &str,
    ) -> Result<DeleteDbClusterParameterGroupOutput, SdkError<DeleteDBClusterParameterGroupError>>
    {
        self.inner
            .delete_db_cluster_parameter_group()
            .db_cluster_parameter_group_name(name)
            .send()
            .await
    }

#[tokio::test]
async fn test_scenario_clean_up() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_delete_db_instance()
        .with(eq("MockInstance"))
        .return_once(|_| Ok(DeleteDbInstanceOutput::builder().build()));

    mock_rds
        .expect_describe_db_instances()
        .with()
        .times(1)
        .returning(|| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_cluster_identifier("MockCluster")
                        .db_instance_status("Deleting")
                        .build(),
                )
                .build())
        })
        .with()
        .times(1)
        .returning(|| Ok(DescribeDbInstancesOutput::builder().build()));

    mock_rds
        .expect_delete_db_cluster()
        .with(eq("MockCluster"))
        .return_once(|_| Ok(DeleteDbClusterOutput::builder().build()));

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("MockCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(
                    DbCluster::builder()
                        .db_cluster_identifier(id)
                        .status("Deleting")
                        .build(),
                )
                .build())
        })
        .with(eq("MockCluster"))
        .times(1)
        .returning(|_| Ok(DescribeDbClustersOutput::builder().build()));

    mock_rds
        .expect_delete_db_cluster_parameter_group()
        .with(eq("MockParamGroup"))
        .return_once(|_| Ok(DeleteDbClusterParameterGroupOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some(String::from("MockCluster"));
    scenario.db_instance_identifier = Some(String::from("MockInstance"));
    scenario.db_cluster_parameter_group = Some(
        DbClusterParameterGroup::builder()
            .db_cluster_parameter_group_name("MockParamGroup")
            .build(),
    );

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let clean_up = scenario.clean_up().await;
        assert!(clean_up.is_ok());
    });

    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Cluster
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Cluster
    tokio::time::resume();
    let _ = assertions.await;
}

#[tokio::test]
async fn test_scenario_clean_up_errors() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_delete_db_instance()
        .with(eq("MockInstance"))
        .return_once(|_| Ok(DeleteDbInstanceOutput::builder().build()));

    mock_rds
        .expect_describe_db_instances()
        .with()
        .times(1)
        .returning(|| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_cluster_identifier("MockCluster")
                        .db_instance_status("Deleting")
                        .build(),
                )
                .build())
        })
        .with()
        .times(1)
        .returning(|| {
            Err(SdkError::service_error(
                DescribeDBInstancesError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe db instances error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    mock_rds
        .expect_delete_db_cluster()
        .with(eq("MockCluster"))
        .return_once(|_| Ok(DeleteDbClusterOutput::builder().build()));

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("MockCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(
                    DbCluster::builder()
                        .db_cluster_identifier(id)
                        .status("Deleting")
                        .build(),
                )
                .build())
        })
        .with(eq("MockCluster"))
        .times(1)
        .returning(|_| {
            Err(SdkError::service_error(
                DescribeDBClustersError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe db clusters error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    mock_rds
        .expect_delete_db_cluster_parameter_group()
        .with(eq("MockParamGroup"))
        .return_once(|_| Ok(DeleteDbClusterParameterGroupOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some(String::from("MockCluster"));
    scenario.db_instance_identifier = Some(String::from("MockInstance"));
    scenario.db_cluster_parameter_group = Some(
        DbClusterParameterGroup::builder()
            .db_cluster_parameter_group_name("MockParamGroup")
            .build(),
    );

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let clean_up = scenario.clean_up().await;
        assert!(clean_up.is_err());
        let errs = clean_up.unwrap_err();
        assert_eq!(errs.len(), 2);
        assert_matches!(errs.first(), Some(ScenarioError {message, context: _}) if message == "Failed to check instance state during deletion");
        assert_matches!(errs.get(1), Some(ScenarioError {message, context: _}) if message == "Failed to check cluster state during deletion");
    });

    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Cluster
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Cluster
    tokio::time::resume();
    let _ = assertions.await;
}

    pub async fn clean_up(self) -> Result<(), Vec<ScenarioError>> {
        let mut clean_up_errors: Vec<ScenarioError> = vec![];

        // Delete the instance. rds.DeleteDbInstance.
        let delete_db_instance = self
            .rds
            .delete_db_instance(
                self.db_instance_identifier
                    .as_deref()
                    .expect("instance identifier"),
            )
            .await;
        if let Err(err) = delete_db_instance {
            let identifier = self
                .db_instance_identifier
                .as_deref()
                .unwrap_or("Missing Instance Identifier");
            let message = format!("failed to delete db instance {identifier}");
            clean_up_errors.push(ScenarioError::new(message, &err));
        } else {
            // Wait for the instance to delete
            let waiter = Waiter::default();
            while waiter.sleep().await.is_ok() {
                let describe_db_instances = self.rds.describe_db_instances().await;
                if let Err(err) = describe_db_instances {
                    clean_up_errors.push(ScenarioError::new(
                        "Failed to check instance state during deletion",
                        &err,
                    ));
                    break;
                }
                let db_instances = describe_db_instances
                    .unwrap()
                    .db_instances()
                    .iter()
                    .filter(|instance| instance.db_cluster_identifier == self.db_cluster_identifier)
                    .cloned()
                    .collect::<Vec<DbInstance>>();

                if db_instances.is_empty() {
                    trace!("Delete Instance waited and no instances were found");
                    break;
                }
                match db_instances.first().unwrap().db_instance_status() {
                    Some("Deleting") => continue,
                    Some(status) => {
                        info!("Attempting to delete but instances is in {status}");
                        continue;
                    }
                    None => {
                        warn!("No status for DB instance");
                        break;
                    }
                }
            }
        }

        // Delete the DB cluster. rds.DeleteDbCluster.
        let delete_db_cluster = self
            .rds
            .delete_db_cluster(
                self.db_cluster_identifier
                    .as_deref()
                    .expect("cluster identifier"),
            )
            .await;

        if let Err(err) = delete_db_cluster {
            let identifier = self
                .db_cluster_identifier
                .as_deref()
                .unwrap_or("Missing DB Cluster Identifier");
            let message = format!("failed to delete db cluster {identifier}");
            clean_up_errors.push(ScenarioError::new(message, &err));
        } else {
            // Wait for the instance and cluster to fully delete. rds.DescribeDbInstances and rds.DescribeDbClusters until both are not found.
            let waiter = Waiter::default();
            while waiter.sleep().await.is_ok() {
                let describe_db_clusters = self
                    .rds
                    .describe_db_clusters(
                        self.db_cluster_identifier
                            .as_deref()
                            .expect("cluster identifier"),
                    )
                    .await;
                if let Err(err) = describe_db_clusters {
                    clean_up_errors.push(ScenarioError::new(
                        "Failed to check cluster state during deletion",
                        &err,
                    ));
                    break;
                }
                let describe_db_clusters = describe_db_clusters.unwrap();
                let db_clusters = describe_db_clusters.db_clusters();
                if db_clusters.is_empty() {
                    trace!("Delete cluster waited and no clusters were found");
                    break;
                }
                match db_clusters.first().unwrap().status() {
                    Some("Deleting") => continue,
                    Some(status) => {
                        info!("Attempting to delete but clusters is in {status}");
                        continue;
                    }
                    None => {
                        warn!("No status for DB cluster");
                        break;
                    }
                }
            }
        }

        // Delete the DB cluster parameter group. rds.DeleteDbClusterParameterGroup.
        let delete_db_cluster_parameter_group = self
            .rds
            .delete_db_cluster_parameter_group(
                self.db_cluster_parameter_group
                    .map(|g| {
                        g.db_cluster_parameter_group_name
                            .unwrap_or_else(|| DB_CLUSTER_PARAMETER_GROUP_NAME.to_string())
                    })
                    .as_deref()
                    .expect("cluster parameter group name"),
            )
            .await;
        if let Err(error) = delete_db_cluster_parameter_group {
            clean_up_errors.push(ScenarioError::new(
                "Failed to delete the db cluster parameter group",
                &error,
            ))
        }

        if clean_up_errors.is_empty() {
            Ok(())
        } else {
            Err(clean_up_errors)
        }
    }

    pub async fn delete_db_instance(
        &self,
        instance_identifier: &str,
    ) -> Result<DeleteDbInstanceOutput, SdkError<DeleteDBInstanceError>> {
        self.inner
            .delete_db_instance()
            .db_instance_identifier(instance_identifier)
            .skip_final_snapshot(true)
            .send()
            .await
    }

#[tokio::test]
async fn test_scenario_clean_up() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_delete_db_instance()
        .with(eq("MockInstance"))
        .return_once(|_| Ok(DeleteDbInstanceOutput::builder().build()));

    mock_rds
        .expect_describe_db_instances()
        .with()
        .times(1)
        .returning(|| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_cluster_identifier("MockCluster")
                        .db_instance_status("Deleting")
                        .build(),
                )
                .build())
        })
        .with()
        .times(1)
        .returning(|| Ok(DescribeDbInstancesOutput::builder().build()));

    mock_rds
        .expect_delete_db_cluster()
        .with(eq("MockCluster"))
        .return_once(|_| Ok(DeleteDbClusterOutput::builder().build()));

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("MockCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(
                    DbCluster::builder()
                        .db_cluster_identifier(id)
                        .status("Deleting")
                        .build(),
                )
                .build())
        })
        .with(eq("MockCluster"))
        .times(1)
        .returning(|_| Ok(DescribeDbClustersOutput::builder().build()));

    mock_rds
        .expect_delete_db_cluster_parameter_group()
        .with(eq("MockParamGroup"))
        .return_once(|_| Ok(DeleteDbClusterParameterGroupOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some(String::from("MockCluster"));
    scenario.db_instance_identifier = Some(String::from("MockInstance"));
    scenario.db_cluster_parameter_group = Some(
        DbClusterParameterGroup::builder()
            .db_cluster_parameter_group_name("MockParamGroup")
            .build(),
    );

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let clean_up = scenario.clean_up().await;
        assert!(clean_up.is_ok());
    });

    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Cluster
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Cluster
    tokio::time::resume();
    let _ = assertions.await;
}

#[tokio::test]
async fn test_scenario_clean_up_errors() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_delete_db_instance()
        .with(eq("MockInstance"))
        .return_once(|_| Ok(DeleteDbInstanceOutput::builder().build()));

    mock_rds
        .expect_describe_db_instances()
        .with()
        .times(1)
        .returning(|| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_cluster_identifier("MockCluster")
                        .db_instance_status("Deleting")
                        .build(),
                )
                .build())
        })
        .with()
        .times(1)
        .returning(|| {
            Err(SdkError::service_error(
                DescribeDBInstancesError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe db instances error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    mock_rds
        .expect_delete_db_cluster()
        .with(eq("MockCluster"))
        .return_once(|_| Ok(DeleteDbClusterOutput::builder().build()));

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("MockCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(
                    DbCluster::builder()
                        .db_cluster_identifier(id)
                        .status("Deleting")
                        .build(),
                )
                .build())
        })
        .with(eq("MockCluster"))
        .times(1)
        .returning(|_| {
            Err(SdkError::service_error(
                DescribeDBClustersError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe db clusters error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    mock_rds
        .expect_delete_db_cluster_parameter_group()
        .with(eq("MockParamGroup"))
        .return_once(|_| Ok(DeleteDbClusterParameterGroupOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some(String::from("MockCluster"));
    scenario.db_instance_identifier = Some(String::from("MockInstance"));
    scenario.db_cluster_parameter_group = Some(
        DbClusterParameterGroup::builder()
            .db_cluster_parameter_group_name("MockParamGroup")
            .build(),
    );

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let clean_up = scenario.clean_up().await;
        assert!(clean_up.is_err());
        let errs = clean_up.unwrap_err();
        assert_eq!(errs.len(), 2);
        assert_matches!(errs.first(), Some(ScenarioError {message, context: _}) if message == "Failed to check instance state during deletion");
        assert_matches!(errs.get(1), Some(ScenarioError {message, context: _}) if message == "Failed to check cluster state during deletion");
    });

    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Cluster
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Cluster
    tokio::time::resume();
    let _ = assertions.await;
}

    // Get the parameter group. rds.DescribeDbClusterParameterGroups
    // Get parameters in the group. This is a long list so you will have to paginate. Find the auto_increment_offset and auto_increment_increment parameters (by ParameterName). rds.DescribeDbClusterParameters
    // Parse the ParameterName, Description, and AllowedValues values and display them.
    pub async fn cluster_parameters(&self) -> Result<Vec<AuroraScenarioParameter>, ScenarioError> {
        let parameters_output = self
            .rds
            .describe_db_cluster_parameters(DB_CLUSTER_PARAMETER_GROUP_NAME)
            .await;

        if let Err(err) = parameters_output {
            return Err(ScenarioError::new(
                format!("Failed to retrieve parameters for {DB_CLUSTER_PARAMETER_GROUP_NAME}"),
                &err,
            ));
        }

        let parameters = parameters_output
            .unwrap()
            .into_iter()
            .flat_map(|p| p.parameters.unwrap_or_default().into_iter())
            .filter(|p| FILTER_PARAMETER_NAMES.contains(p.parameter_name().unwrap_or_default()))
            .map(AuroraScenarioParameter::from)
            .collect::<Vec<_>>();

        Ok(parameters)
    }

    pub async fn describe_db_cluster_parameters(
        &self,
        name: &str,
    ) -> Result<Vec<DescribeDbClusterParametersOutput>, SdkError<DescribeDBClusterParametersError>>
    {
        self.inner
            .describe_db_cluster_parameters()
            .db_cluster_parameter_group_name(name)
            .into_paginator()
            .send()
            .try_collect()
            .await
    }

#[tokio::test]
async fn test_scenario_cluster_parameters() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_describe_db_cluster_parameters()
        .with(eq("RustSDKCodeExamplesDBParameterGroup"))
        .return_once(|_| {
            Ok(vec![DescribeDbClusterParametersOutput::builder()
                .parameters(Parameter::builder().parameter_name("a").build())
                .parameters(Parameter::builder().parameter_name("b").build())
                .parameters(
                    Parameter::builder()
                        .parameter_name("auto_increment_offset")
                        .build(),
                )
                .parameters(Parameter::builder().parameter_name("c").build())
                .parameters(
                    Parameter::builder()
                        .parameter_name("auto_increment_increment")
                        .build(),
                )
                .parameters(Parameter::builder().parameter_name("d").build())
                .build()])
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some("RustSDKCodeExamplesDBCluster".into());

    let params = scenario.cluster_parameters().await.expect("cluster params");
    let names: Vec<String> = params.into_iter().map(|p| p.name).collect();
    assert_eq!(
        names,
        vec!["auto_increment_offset", "auto_increment_increment"]
    );
}

#[tokio::test]
async fn test_scenario_cluster_parameters_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_describe_db_cluster_parameters()
        .with(eq("RustSDKCodeExamplesDBParameterGroup"))
        .return_once(|_| {
            Err(SdkError::service_error(
                DescribeDBClusterParametersError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe_db_cluster_parameters_error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some("RustSDKCodeExamplesDBCluster".into());
    let params = scenario.cluster_parameters().await;
    assert_matches!(params, Err(ScenarioError { message, context: _ }) if message == "Failed to retrieve parameters for RustSDKCodeExamplesDBParameterGroup");
}

    // Get a list of allowed engine versions. rds.DescribeDbEngineVersions(Engine='aurora-mysql', DBParameterGroupFamily=<the family used to create your parameter group in step 2>)
    // Create an Aurora DB cluster database cluster that contains a MySql database and uses the parameter group you created.
    // Wait for DB cluster to be ready. Call rds.DescribeDBClusters and check for Status == 'available'.
    // Get a list of instance classes available for the selected engine and engine version. rds.DescribeOrderableDbInstanceOptions(Engine='mysql', EngineVersion=).

    // Create a database instance in the cluster.
    // Wait for DB instance to be ready. Call rds.DescribeDbInstances and check for DBInstanceStatus == 'available'.
    pub async fn start_cluster_and_instance(&mut self) -> Result<(), ScenarioError> {
        if self.password.is_none() {
            return Err(ScenarioError::with(
                "Must set Secret Password before starting a cluster",
            ));
        }
        let create_db_cluster = self
            .rds
            .create_db_cluster(
                DB_CLUSTER_IDENTIFIER,
                DB_CLUSTER_PARAMETER_GROUP_NAME,
                DB_ENGINE,
                self.engine_version.as_deref().expect("engine version"),
                self.username.as_deref().expect("username"),
                self.password
                    .replace(SecretString::new("".to_string()))
                    .expect("password"),
            )
            .await;
        if let Err(err) = create_db_cluster {
            return Err(ScenarioError::new(
                "Failed to create DB Cluster with cluster group",
                &err,
            ));
        }

        self.db_cluster_identifier = create_db_cluster
            .unwrap()
            .db_cluster
            .and_then(|c| c.db_cluster_identifier);

        if self.db_cluster_identifier.is_none() {
            return Err(ScenarioError::with("Created DB Cluster missing Identifier"));
        }

        info!(
            "Started a db cluster: {}",
            self.db_cluster_identifier
                .as_deref()
                .unwrap_or("Missing ARN")
        );

        let create_db_instance = self
            .rds
            .create_db_instance(
                self.db_cluster_identifier.as_deref().expect("cluster name"),
                DB_INSTANCE_IDENTIFIER,
                self.instance_class.as_deref().expect("instance class"),
                DB_ENGINE,
            )
            .await;
        if let Err(err) = create_db_instance {
            return Err(ScenarioError::new(
                "Failed to create Instance in DB Cluster",
                &err,
            ));
        }

        self.db_instance_identifier = create_db_instance
            .unwrap()
            .db_instance
            .and_then(|i| i.db_instance_identifier);

        // Cluster creation can take up to 20 minutes to become available
        let cluster_max_wait = Duration::from_secs(20 * 60);
        let waiter = Waiter::builder().max(cluster_max_wait).build();
        while waiter.sleep().await.is_ok() {
            let cluster = self
                .rds
                .describe_db_clusters(
                    self.db_cluster_identifier
                        .as_deref()
                        .expect("cluster identifier"),
                )
                .await;

            if let Err(err) = cluster {
                warn!(?err, "Failed to describe cluster while waiting for ready");
                continue;
            }

            let instance = self
                .rds
                .describe_db_instance(
                    self.db_instance_identifier
                        .as_deref()
                        .expect("instance identifier"),
                )
                .await;
            if let Err(err) = instance {
                return Err(ScenarioError::new(
                    "Failed to find instance for cluster",
                    &err,
                ));
            }

            let instances_available = instance
                .unwrap()
                .db_instances()
                .iter()
                .all(|instance| instance.db_instance_status() == Some("Available"));

            let endpoints = self
                .rds
                .describe_db_cluster_endpoints(
                    self.db_cluster_identifier
                        .as_deref()
                        .expect("cluster identifier"),
                )
                .await;

            if let Err(err) = endpoints {
                return Err(ScenarioError::new(
                    "Failed to find endpoint for cluster",
                    &err,
                ));
            }

            let endpoints_available = endpoints
                .unwrap()
                .db_cluster_endpoints()
                .iter()
                .all(|endpoint| endpoint.status() == Some("available"));

            if instances_available && endpoints_available {
                return Ok(());
            }
        }

        Err(ScenarioError::with("timed out waiting for cluster"))
    }

    pub async fn describe_db_clusters(
        &self,
        id: &str,
    ) -> Result<DescribeDbClustersOutput, SdkError<DescribeDBClustersError>> {
        self.inner
            .describe_db_clusters()
            .db_cluster_identifier(id)
            .send()
            .await
    }

#[tokio::test]
async fn test_start_cluster_and_instance() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .withf(|cluster, name, class, engine| {
            assert_eq!(cluster, "RustSDKCodeExamplesDBCluster");
            assert_eq!(name, "RustSDKCodeExamplesDBInstance");
            assert_eq!(class, "m5.large");
            assert_eq!(engine, "aurora-mysql");
            true
        })
        .return_once(|cluster, name, class, _| {
            Ok(CreateDbInstanceOutput::builder()
                .db_instance(
                    DbInstance::builder()
                        .db_cluster_identifier(cluster)
                        .db_instance_identifier(name)
                        .db_instance_class(class)
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_describe_db_instance()
        .with(eq("RustSDKCodeExamplesDBInstance"))
        .return_once(|name| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_instance_identifier(name)
                        .db_instance_status("Available")
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_cluster_endpoints()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .return_once(|_| {
            Ok(DescribeDbClusterEndpointsOutput::builder()
                .db_cluster_endpoints(DbClusterEndpoint::builder().status("available").build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let create = scenario.start_cluster_and_instance().await;
        assert!(create.is_ok());
        assert!(scenario
            .password
            .replace(SecretString::new("BAD SECRET".into()))
            .unwrap()
            .expose_secret()
            .is_empty());
        assert_eq!(
            scenario.db_cluster_identifier,
            Some("RustSDKCodeExamplesDBCluster".into())
        );
    });
    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::resume();
    let _ = assertions.await;
}

#[tokio::test]
async fn test_start_cluster_and_instance_cluster_create_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .return_once(|_, _, _, _, _, _| {
            Err(SdkError::service_error(
                CreateDBClusterError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "create db cluster error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context: _}) if message == "Failed to create DB Cluster with cluster group")
}

#[tokio::test]
async fn test_start_cluster_and_instance_cluster_create_missing_id() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .return_once(|_, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context:_ }) if message == "Created DB Cluster missing Identifier");
}

#[tokio::test]
async fn test_start_cluster_and_instance_instance_create_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .return_once(|_, _, _, _| {
            Err(SdkError::service_error(
                CreateDBInstanceError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "create db instance error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    let create = scenario.start_cluster_and_instance().await;
    assert_matches!(create, Err(ScenarioError { message, context: _ }) if message == "Failed to create Instance in DB Cluster")
}

#[tokio::test]
async fn test_start_cluster_and_instance_wait_hiccup() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster()
        .withf(|id, params, engine, version, username, password| {
            assert_eq!(id, "RustSDKCodeExamplesDBCluster");
            assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(engine, "aurora-mysql");
            assert_eq!(version, "aurora-mysql8.0");
            assert_eq!(username, "test username");
            assert_eq!(password.expose_secret(), "test password");
            true
        })
        .return_once(|id, _, _, _, _, _| {
            Ok(CreateDbClusterOutput::builder()
                .db_cluster(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds
        .expect_create_db_instance()
        .withf(|cluster, name, class, engine| {
            assert_eq!(cluster, "RustSDKCodeExamplesDBCluster");
            assert_eq!(name, "RustSDKCodeExamplesDBInstance");
            assert_eq!(class, "m5.large");
            assert_eq!(engine, "aurora-mysql");
            true
        })
        .return_once(|cluster, name, class, _| {
            Ok(CreateDbInstanceOutput::builder()
                .db_instance(
                    DbInstance::builder()
                        .db_cluster_identifier(cluster)
                        .db_instance_identifier(name)
                        .db_instance_class(class)
                        .build(),
                )
                .build())
        });

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .times(1)
        .returning(|_| {
            Err(SdkError::service_error(
                DescribeDBClustersError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe cluster error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        })
        .with(eq("RustSDKCodeExamplesDBCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(DbCluster::builder().db_cluster_identifier(id).build())
                .build())
        });

    mock_rds.expect_describe_db_instance().return_once(|name| {
        Ok(DescribeDbInstancesOutput::builder()
            .db_instances(
                DbInstance::builder()
                    .db_instance_identifier(name)
                    .db_instance_status("Available")
                    .build(),
            )
            .build())
    });

    mock_rds
        .expect_describe_db_cluster_endpoints()
        .return_once(|_| {
            Ok(DescribeDbClusterEndpointsOutput::builder()
                .db_cluster_endpoints(DbClusterEndpoint::builder().status("available").build())
                .build())
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_version = Some("aurora-mysql8.0".into());
    scenario.instance_class = Some("m5.large".into());
    scenario.username = Some("test username".into());
    scenario.password = Some(SecretString::new("test password".into()));

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let create = scenario.start_cluster_and_instance().await;
        assert!(create.is_ok());
    });

    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::advance(Duration::from_secs(1)).await;
    tokio::time::resume();
    let _ = assertions.await;
}

    // Get available engine families for Aurora MySql. rds.DescribeDbEngineVersions(Engine='aurora-mysql') and build a set of the 'DBParameterGroupFamily' field values. I get {aurora-mysql8.0, aurora-mysql5.7}.
    pub async fn get_engines(&self) -> Result<HashMap<String, Vec<String>>, ScenarioError> {
        let describe_db_engine_versions = self.rds.describe_db_engine_versions(DB_ENGINE).await;
        trace!(versions=?describe_db_engine_versions, "full list of versions");

        if let Err(err) = describe_db_engine_versions {
            return Err(ScenarioError::new(
                "Failed to retrieve DB Engine Versions",
                &err,
            ));
        };

        let version_count = describe_db_engine_versions
            .as_ref()
            .map(|o| o.db_engine_versions().len())
            .unwrap_or_default();
        info!(version_count, "got list of versions");

        // Create a map of engine families to their available versions.
        let mut versions = HashMap::<String, Vec<String>>::new();
        describe_db_engine_versions
            .unwrap()
            .db_engine_versions()
            .iter()
            .filter_map(
                |v| match (&v.db_parameter_group_family, &v.engine_version) {
                    (Some(family), Some(version)) => Some((family.clone(), version.clone())),
                    _ => None,
                },
            )
            .for_each(|(family, version)| versions.entry(family).or_default().push(version));

        Ok(versions)
    }

    pub async fn describe_db_engine_versions(
        &self,
        engine: &str,
    ) -> Result<DescribeDbEngineVersionsOutput, SdkError<DescribeDBEngineVersionsError>> {
        self.inner
            .describe_db_engine_versions()
            .engine(engine)
            .send()
            .await
    }

#[tokio::test]
async fn test_scenario_get_engines() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_describe_db_engine_versions()
        .with(eq("aurora-mysql"))
        .return_once(|_| {
            Ok(DescribeDbEngineVersionsOutput::builder()
                .db_engine_versions(
                    DbEngineVersion::builder()
                        .db_parameter_group_family("f1")
                        .engine_version("f1a")
                        .build(),
                )
                .db_engine_versions(
                    DbEngineVersion::builder()
                        .db_parameter_group_family("f1")
                        .engine_version("f1b")
                        .build(),
                )
                .db_engine_versions(
                    DbEngineVersion::builder()
                        .db_parameter_group_family("f2")
                        .engine_version("f2a")
                        .build(),
                )
                .db_engine_versions(DbEngineVersion::builder().build())
                .build())
        });

    let scenario = AuroraScenario::new(mock_rds);

    let versions_map = scenario.get_engines().await;

    assert_eq!(
        versions_map,
        Ok(HashMap::from([
            ("f1".into(), vec!["f1a".into(), "f1b".into()]),
            ("f2".into(), vec!["f2a".into()])
        ]))
    );
}

#[tokio::test]
async fn test_scenario_get_engines_failed() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_describe_db_engine_versions()
        .with(eq("aurora-mysql"))
        .return_once(|_| {
            Err(SdkError::service_error(
                DescribeDBEngineVersionsError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe_db_engine_versions error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let scenario = AuroraScenario::new(mock_rds);

    let versions_map = scenario.get_engines().await;
    assert_matches!(
        versions_map,
        Err(ScenarioError { message, context: _ }) if message == "Failed to retrieve DB Engine Versions"
    );
}

    pub async fn clean_up(self) -> Result<(), Vec<ScenarioError>> {
        let mut clean_up_errors: Vec<ScenarioError> = vec![];

        // Delete the instance. rds.DeleteDbInstance.
        let delete_db_instance = self
            .rds
            .delete_db_instance(
                self.db_instance_identifier
                    .as_deref()
                    .expect("instance identifier"),
            )
            .await;
        if let Err(err) = delete_db_instance {
            let identifier = self
                .db_instance_identifier
                .as_deref()
                .unwrap_or("Missing Instance Identifier");
            let message = format!("failed to delete db instance {identifier}");
            clean_up_errors.push(ScenarioError::new(message, &err));
        } else {
            // Wait for the instance to delete
            let waiter = Waiter::default();
            while waiter.sleep().await.is_ok() {
                let describe_db_instances = self.rds.describe_db_instances().await;
                if let Err(err) = describe_db_instances {
                    clean_up_errors.push(ScenarioError::new(
                        "Failed to check instance state during deletion",
                        &err,
                    ));
                    break;
                }
                let db_instances = describe_db_instances
                    .unwrap()
                    .db_instances()
                    .iter()
                    .filter(|instance| instance.db_cluster_identifier == self.db_cluster_identifier)
                    .cloned()
                    .collect::<Vec<DbInstance>>();

                if db_instances.is_empty() {
                    trace!("Delete Instance waited and no instances were found");
                    break;
                }
                match db_instances.first().unwrap().db_instance_status() {
                    Some("Deleting") => continue,
                    Some(status) => {
                        info!("Attempting to delete but instances is in {status}");
                        continue;
                    }
                    None => {
                        warn!("No status for DB instance");
                        break;
                    }
                }
            }
        }

        // Delete the DB cluster. rds.DeleteDbCluster.
        let delete_db_cluster = self
            .rds
            .delete_db_cluster(
                self.db_cluster_identifier
                    .as_deref()
                    .expect("cluster identifier"),
            )
            .await;

        if let Err(err) = delete_db_cluster {
            let identifier = self
                .db_cluster_identifier
                .as_deref()
                .unwrap_or("Missing DB Cluster Identifier");
            let message = format!("failed to delete db cluster {identifier}");
            clean_up_errors.push(ScenarioError::new(message, &err));
        } else {
            // Wait for the instance and cluster to fully delete. rds.DescribeDbInstances and rds.DescribeDbClusters until both are not found.
            let waiter = Waiter::default();
            while waiter.sleep().await.is_ok() {
                let describe_db_clusters = self
                    .rds
                    .describe_db_clusters(
                        self.db_cluster_identifier
                            .as_deref()
                            .expect("cluster identifier"),
                    )
                    .await;
                if let Err(err) = describe_db_clusters {
                    clean_up_errors.push(ScenarioError::new(
                        "Failed to check cluster state during deletion",
                        &err,
                    ));
                    break;
                }
                let describe_db_clusters = describe_db_clusters.unwrap();
                let db_clusters = describe_db_clusters.db_clusters();
                if db_clusters.is_empty() {
                    trace!("Delete cluster waited and no clusters were found");
                    break;
                }
                match db_clusters.first().unwrap().status() {
                    Some("Deleting") => continue,
                    Some(status) => {
                        info!("Attempting to delete but clusters is in {status}");
                        continue;
                    }
                    None => {
                        warn!("No status for DB cluster");
                        break;
                    }
                }
            }
        }

        // Delete the DB cluster parameter group. rds.DeleteDbClusterParameterGroup.
        let delete_db_cluster_parameter_group = self
            .rds
            .delete_db_cluster_parameter_group(
                self.db_cluster_parameter_group
                    .map(|g| {
                        g.db_cluster_parameter_group_name
                            .unwrap_or_else(|| DB_CLUSTER_PARAMETER_GROUP_NAME.to_string())
                    })
                    .as_deref()
                    .expect("cluster parameter group name"),
            )
            .await;
        if let Err(error) = delete_db_cluster_parameter_group {
            clean_up_errors.push(ScenarioError::new(
                "Failed to delete the db cluster parameter group",
                &error,
            ))
        }

        if clean_up_errors.is_empty() {
            Ok(())
        } else {
            Err(clean_up_errors)
        }
    }

    pub async fn describe_db_instances(
        &self,
    ) -> Result<DescribeDbInstancesOutput, SdkError<DescribeDBInstancesError>> {
        self.inner.describe_db_instances().send().await
    }

#[tokio::test]
async fn test_scenario_clean_up() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_delete_db_instance()
        .with(eq("MockInstance"))
        .return_once(|_| Ok(DeleteDbInstanceOutput::builder().build()));

    mock_rds
        .expect_describe_db_instances()
        .with()
        .times(1)
        .returning(|| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_cluster_identifier("MockCluster")
                        .db_instance_status("Deleting")
                        .build(),
                )
                .build())
        })
        .with()
        .times(1)
        .returning(|| Ok(DescribeDbInstancesOutput::builder().build()));

    mock_rds
        .expect_delete_db_cluster()
        .with(eq("MockCluster"))
        .return_once(|_| Ok(DeleteDbClusterOutput::builder().build()));

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("MockCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(
                    DbCluster::builder()
                        .db_cluster_identifier(id)
                        .status("Deleting")
                        .build(),
                )
                .build())
        })
        .with(eq("MockCluster"))
        .times(1)
        .returning(|_| Ok(DescribeDbClustersOutput::builder().build()));

    mock_rds
        .expect_delete_db_cluster_parameter_group()
        .with(eq("MockParamGroup"))
        .return_once(|_| Ok(DeleteDbClusterParameterGroupOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some(String::from("MockCluster"));
    scenario.db_instance_identifier = Some(String::from("MockInstance"));
    scenario.db_cluster_parameter_group = Some(
        DbClusterParameterGroup::builder()
            .db_cluster_parameter_group_name("MockParamGroup")
            .build(),
    );

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let clean_up = scenario.clean_up().await;
        assert!(clean_up.is_ok());
    });

    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Cluster
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Cluster
    tokio::time::resume();
    let _ = assertions.await;
}

#[tokio::test]
async fn test_scenario_clean_up_errors() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_delete_db_instance()
        .with(eq("MockInstance"))
        .return_once(|_| Ok(DeleteDbInstanceOutput::builder().build()));

    mock_rds
        .expect_describe_db_instances()
        .with()
        .times(1)
        .returning(|| {
            Ok(DescribeDbInstancesOutput::builder()
                .db_instances(
                    DbInstance::builder()
                        .db_cluster_identifier("MockCluster")
                        .db_instance_status("Deleting")
                        .build(),
                )
                .build())
        })
        .with()
        .times(1)
        .returning(|| {
            Err(SdkError::service_error(
                DescribeDBInstancesError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe db instances error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    mock_rds
        .expect_delete_db_cluster()
        .with(eq("MockCluster"))
        .return_once(|_| Ok(DeleteDbClusterOutput::builder().build()));

    mock_rds
        .expect_describe_db_clusters()
        .with(eq("MockCluster"))
        .times(1)
        .returning(|id| {
            Ok(DescribeDbClustersOutput::builder()
                .db_clusters(
                    DbCluster::builder()
                        .db_cluster_identifier(id)
                        .status("Deleting")
                        .build(),
                )
                .build())
        })
        .with(eq("MockCluster"))
        .times(1)
        .returning(|_| {
            Err(SdkError::service_error(
                DescribeDBClustersError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe db clusters error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    mock_rds
        .expect_delete_db_cluster_parameter_group()
        .with(eq("MockParamGroup"))
        .return_once(|_| Ok(DeleteDbClusterParameterGroupOutput::builder().build()));

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.db_cluster_identifier = Some(String::from("MockCluster"));
    scenario.db_instance_identifier = Some(String::from("MockInstance"));
    scenario.db_cluster_parameter_group = Some(
        DbClusterParameterGroup::builder()
            .db_cluster_parameter_group_name("MockParamGroup")
            .build(),
    );

    tokio::time::pause();
    let assertions = tokio::spawn(async move {
        let clean_up = scenario.clean_up().await;
        assert!(clean_up.is_err());
        let errs = clean_up.unwrap_err();
        assert_eq!(errs.len(), 2);
        assert_matches!(errs.first(), Some(ScenarioError {message, context: _}) if message == "Failed to check instance state during deletion");
        assert_matches!(errs.get(1), Some(ScenarioError {message, context: _}) if message == "Failed to check cluster state during deletion");
    });

    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Instances
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for first Describe Cluster
    tokio::time::advance(Duration::from_secs(1)).await; // Wait for second Describe Cluster
    tokio::time::resume();
    let _ = assertions.await;
}

    pub async fn get_instance_classes(&self) -> Result<Vec<String>, ScenarioError> {
        let describe_orderable_db_instance_options_items = self
            .rds
            .describe_orderable_db_instance_options(
                DB_ENGINE,
                self.engine_version
                    .as_ref()
                    .expect("engine version for db instance options")
                    .as_str(),
            )
            .await;

        describe_orderable_db_instance_options_items
            .map(|options| {
                options
                    .iter()
                    .filter(|o| o.storage_type() == Some("aurora"))
                    .map(|o| o.db_instance_class().unwrap_or_default().to_string())
                    .collect::<Vec<String>>()
            })
            .map_err(|err| ScenarioError::new("Could not get available instance classes", &err))
    }

    pub async fn describe_orderable_db_instance_options(
        &self,
        engine: &str,
        engine_version: &str,
    ) -> Result<Vec<OrderableDbInstanceOption>, SdkError<DescribeOrderableDBInstanceOptionsError>>
    {
        self.inner
            .describe_orderable_db_instance_options()
            .engine(engine)
            .engine_version(engine_version)
            .into_paginator()
            .items()
            .send()
            .try_collect()
            .await
    }

#[tokio::test]
async fn test_scenario_get_instance_classes() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_create_db_cluster_parameter_group()
        .return_once(|_, _, _| {
            Ok(CreateDbClusterParameterGroupOutput::builder()
                .db_cluster_parameter_group(DbClusterParameterGroup::builder().build())
                .build())
        });

    mock_rds
        .expect_describe_orderable_db_instance_options()
        .with(eq("aurora-mysql"), eq("aurora-mysql8.0"))
        .return_once(|_, _| {
            Ok(vec![
                OrderableDbInstanceOption::builder()
                    .db_instance_class("t1")
                    .storage_type("aurora")
                    .build(),
                OrderableDbInstanceOption::builder()
                    .db_instance_class("t1")
                    .storage_type("aurora-iopt1")
                    .build(),
                OrderableDbInstanceOption::builder()
                    .db_instance_class("t2")
                    .storage_type("aurora")
                    .build(),
                OrderableDbInstanceOption::builder()
                    .db_instance_class("t3")
                    .storage_type("aurora")
                    .build(),
            ])
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario
        .set_engine("aurora-mysql", "aurora-mysql8.0")
        .await
        .expect("set engine");

    let instance_classes = scenario.get_instance_classes().await;

    assert_eq!(
        instance_classes,
        Ok(vec!["t1".into(), "t2".into(), "t3".into()])
    );
}

#[tokio::test]
async fn test_scenario_get_instance_classes_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_describe_orderable_db_instance_options()
        .with(eq("aurora-mysql"), eq("aurora-mysql8.0"))
        .return_once(|_, _| {
            Err(SdkError::service_error(
                DescribeOrderableDBInstanceOptionsError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "describe_orderable_db_instance_options_error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let mut scenario = AuroraScenario::new(mock_rds);
    scenario.engine_family = Some("aurora-mysql".into());
    scenario.engine_version = Some("aurora-mysql8.0".into());

    let instance_classes = scenario.get_instance_classes().await;

    assert_matches!(
        instance_classes,
        Err(ScenarioError {message, context: _}) if message == "Could not get available instance classes"
    );
}

    // Modify both the auto_increment_offset and auto_increment_increment parameters in one call in the custom parameter group. Set their ParameterValue fields to a new allowable value. rds.ModifyDbClusterParameterGroup.
    pub async fn update_auto_increment(
        &self,
        offset: u8,
        increment: u8,
    ) -> Result<(), ScenarioError> {
        let modify_db_cluster_parameter_group = self
            .rds
            .modify_db_cluster_parameter_group(
                DB_CLUSTER_PARAMETER_GROUP_NAME,
                vec![
                    Parameter::builder()
                        .parameter_name("auto_increment_offset")
                        .parameter_value(format!("{offset}"))
                        .apply_method(aws_sdk_rds::types::ApplyMethod::Immediate)
                        .build(),
                    Parameter::builder()
                        .parameter_name("auto_increment_increment")
                        .parameter_value(format!("{increment}"))
                        .apply_method(aws_sdk_rds::types::ApplyMethod::Immediate)
                        .build(),
                ],
            )
            .await;

        if let Err(error) = modify_db_cluster_parameter_group {
            return Err(ScenarioError::new(
                "Failed to modify cluster parameter group",
                &error,
            ));
        }

        Ok(())
    }

    pub async fn modify_db_cluster_parameter_group(
        &self,
        name: &str,
        parameters: Vec<Parameter>,
    ) -> Result<ModifyDbClusterParameterGroupOutput, SdkError<ModifyDBClusterParameterGroupError>>
    {
        self.inner
            .modify_db_cluster_parameter_group()
            .db_cluster_parameter_group_name(name)
            .set_parameters(Some(parameters))
            .send()
            .await
    }

#[tokio::test]
async fn test_scenario_update_auto_increment() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_modify_db_cluster_parameter_group()
        .withf(|name, params| {
            assert_eq!(name, "RustSDKCodeExamplesDBParameterGroup");
            assert_eq!(
                params,
                &vec![
                    Parameter::builder()
                        .parameter_name("auto_increment_offset")
                        .parameter_value("10")
                        .apply_method(aws_sdk_rds::types::ApplyMethod::Immediate)
                        .build(),
                    Parameter::builder()
                        .parameter_name("auto_increment_increment")
                        .parameter_value("20")
                        .apply_method(aws_sdk_rds::types::ApplyMethod::Immediate)
                        .build(),
                ]
            );
            true
        })
        .return_once(|_, _| Ok(ModifyDbClusterParameterGroupOutput::builder().build()));

    let scenario = AuroraScenario::new(mock_rds);

    scenario
        .update_auto_increment(10, 20)
        .await
        .expect("update auto increment");
}

#[tokio::test]
async fn test_scenario_update_auto_increment_error() {
    let mut mock_rds = MockRdsImpl::default();

    mock_rds
        .expect_modify_db_cluster_parameter_group()
        .return_once(|_, _| {
            Err(SdkError::service_error(
                ModifyDBClusterParameterGroupError::unhandled(Box::new(Error::new(
                    ErrorKind::Other,
                    "modify_db_cluster_parameter_group_error",
                ))),
                Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()),
            ))
        });

    let scenario = AuroraScenario::new(mock_rds);

    let update = scenario.update_auto_increment(10, 20).await;
    assert_matches!(update, Err(ScenarioError { message, context: _}) if message == "Failed to modify cluster parameter group");
}