D'autres exemples de AWS SDK sont disponibles dans le référentiel AWS Doc SDK Examples GitHub .
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Exemples de code pour Amazon RDS utilisant AWS SDKs
Les exemples de code suivants vous montrent comment utiliser Amazon Relational Database Service avec AWS un kit de développement logiciel (SDK).
Les principes de base sont des exemples de code qui vous montrent comment effectuer les opérations essentielles au sein d’un service.
Les actions sont des extraits de code de programmes plus larges et doivent être exécutées dans leur contexte. Alors que les actions vous indiquent comment appeler des fonctions de service individuelles, vous pouvez les voir en contexte dans leurs scénarios associés.
Les Scénarios sont des exemples de code qui vous montrent comment accomplir des tâches spécifiques en appelant plusieurs fonctions au sein d’un même service ou combinés à d’autres Services AWS.
Ressources supplémentaires
Mise en route
Les exemples de code suivants montrent comment bien démarrer avec Amazon RDS.
- .NET
-
- AWS SDK for .NET
-
using System;
using System.Threading.Tasks;
using Amazon.RDS;
using Amazon.RDS.Model;
namespace RDSActions;
public static class HelloRds
{
static async Task Main(string[] args)
{
var rdsClient = new AmazonRDSClient();
Console.WriteLine($"Hello Amazon RDS! Following are some of your DB instances:");
Console.WriteLine();
// You can use await and any of the async methods to get a response.
// Let's get the first twenty DB instances.
var response = await rdsClient.DescribeDBInstancesAsync(
new DescribeDBInstancesRequest()
{
MaxRecords = 20 // Must be between 20 and 100.
});
foreach (var instance in response.DBInstances)
{
Console.WriteLine($"\tDB name: {instance.DBName}");
Console.WriteLine($"\tArn: {instance.DBInstanceArn}");
Console.WriteLine($"\tIdentifier: {instance.DBInstanceIdentifier}");
Console.WriteLine();
}
}
}
- C++
-
- SDK pour C++
-
Code du CMake fichier CMake Lists.txt.
# Set the minimum required version of CMake for this project.
cmake_minimum_required(VERSION 3.13)
# Set the AWS service components used by this project.
set(SERVICE_COMPONENTS rds)
# Set this project's name.
project("hello_rds")
# Set the C++ standard to use to build this target.
# At least C++ 11 is required for the AWS SDK for C++.
set(CMAKE_CXX_STANDARD 11)
# Use the MSVC variable to determine if this is a Windows build.
set(WINDOWS_BUILD ${MSVC})
if (WINDOWS_BUILD) # Set the location where CMake can find the installed libraries for the AWS SDK.
string(REPLACE ";" "/aws-cpp-sdk-all;" SYSTEM_MODULE_PATH "${CMAKE_SYSTEM_PREFIX_PATH}/aws-cpp-sdk-all")
list(APPEND CMAKE_PREFIX_PATH ${SYSTEM_MODULE_PATH})
endif ()
# Find the AWS SDK for C++ package.
find_package(AWSSDK REQUIRED COMPONENTS ${SERVICE_COMPONENTS})
if (WINDOWS_BUILD AND AWSSDK_INSTALL_AS_SHARED_LIBS)
# Copy relevant AWS SDK for C++ libraries into the current binary directory for running and debugging.
# set(BIN_SUB_DIR "/Debug") # If you are building from the command line, you may need to uncomment this
# and set the proper subdirectory to the executables' location.
AWSSDK_CPY_DYN_LIBS(SERVICE_COMPONENTS "" ${CMAKE_CURRENT_BINARY_DIR}${BIN_SUB_DIR})
endif ()
add_executable(${PROJECT_NAME}
hello_rds.cpp)
target_link_libraries(${PROJECT_NAME}
${AWSSDK_LINK_LIBRARIES})
Code pour le fichier source hello_rds.cpp.
#include <aws/core/Aws.h>
#include <aws/rds/RDSClient.h>
#include <aws/rds/model/DescribeDBInstancesRequest.h>
#include <iostream>
/*
* A "Hello Rds" starter application which initializes an Amazon Relational Database Service (Amazon RDS) client and
* describes the Amazon RDS instances.
*
* main function
*
* Usage: 'hello_rds'
*
*/
int main(int argc, char **argv) {
Aws::SDKOptions options;
// Optionally change the log level for debugging.
// options.loggingOptions.logLevel = Utils::Logging::LogLevel::Debug;
Aws::InitAPI(options); // Should only be called once.
int result = 0;
{
Aws::Client::ClientConfiguration clientConfig;
// Optional: Set to the AWS Region (overrides config file).
// clientConfig.region = "us-east-1";
Aws::RDS::RDSClient rdsClient(clientConfig);
Aws::String marker;
std::vector<Aws::String> instanceDBIDs;
do {
Aws::RDS::Model::DescribeDBInstancesRequest request;
if (!marker.empty()) {
request.SetMarker(marker);
}
Aws::RDS::Model::DescribeDBInstancesOutcome outcome =
rdsClient.DescribeDBInstances(request);
if (outcome.IsSuccess()) {
for (auto &instance: outcome.GetResult().GetDBInstances()) {
instanceDBIDs.push_back(instance.GetDBInstanceIdentifier());
}
marker = outcome.GetResult().GetMarker();
} else {
result = 1;
std::cerr << "Error with RDS::DescribeDBInstances. "
<< outcome.GetError().GetMessage()
<< std::endl;
break;
}
} while (!marker.empty());
std::cout << instanceDBIDs.size() << " RDS instances found." << std::endl;
for (auto &instanceDBID: instanceDBIDs) {
std::cout << " Instance: " << instanceDBID << std::endl;
}
}
Aws::ShutdownAPI(options); // Should only be called once.
return result;
}
- Go
-
- Kit SDK for Go V2
-
package main
import (
"context"
"fmt"
"github.com/aws/aws-sdk-go-v2/aws"
"github.com/aws/aws-sdk-go-v2/config"
"github.com/aws/aws-sdk-go-v2/service/rds"
)
// main uses the AWS SDK for Go V2 to create an Amazon Relational Database Service (Amazon RDS)
// client and list up to 20 DB instances in your account.
// This example uses the default settings specified in your shared credentials
// and config files.
func main() {
ctx := context.Background()
sdkConfig, err := config.LoadDefaultConfig(ctx)
if err != nil {
fmt.Println("Couldn't load default configuration. Have you set up your AWS account?")
fmt.Println(err)
return
}
rdsClient := rds.NewFromConfig(sdkConfig)
const maxInstances = 20
fmt.Printf("Let's list up to %v DB instances.\n", maxInstances)
output, err := rdsClient.DescribeDBInstances(ctx,
&rds.DescribeDBInstancesInput{MaxRecords: aws.Int32(maxInstances)})
if err != nil {
fmt.Printf("Couldn't list DB instances: %v\n", err)
return
}
if len(output.DBInstances) == 0 {
fmt.Println("No DB instances found.")
} else {
for _, instance := range output.DBInstances {
fmt.Printf("DB instance %v has database %v.\n", *instance.DBInstanceIdentifier,
*instance.DBName)
}
}
}
- Java
-
- SDK pour Java 2.x
-
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.rds.RdsClient;
import software.amazon.awssdk.services.rds.model.DescribeDbInstancesResponse;
import software.amazon.awssdk.services.rds.model.DBInstance;
import software.amazon.awssdk.services.rds.model.RdsException;
import java.util.List;
/**
* Before running this Java V2 code example, set up your development
* environment, including your credentials.
*
* For more information, see the following documentation topic:
*
* https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
*/
public class DescribeDBInstances {
public static void main(String[] args) {
Region region = Region.US_EAST_1;
RdsClient rdsClient = RdsClient.builder()
.region(region)
.build();
describeInstances(rdsClient);
rdsClient.close();
}
public static void describeInstances(RdsClient rdsClient) {
try {
DescribeDbInstancesResponse response = rdsClient.describeDBInstances();
List<DBInstance> instanceList = response.dbInstances();
for (DBInstance instance : instanceList) {
System.out.println("Instance ARN is: " + instance.dbInstanceArn());
System.out.println("The Engine is " + instance.engine());
System.out.println("Connection endpoint is" + instance.endpoint().address());
}
} catch (RdsException e) {
System.out.println(e.getLocalizedMessage());
System.exit(1);
}
}
}
- Python
-
- SDK pour Python (Boto3)
-
"""
Purpose
Shows how to use the AWS SDK for Python (Boto3) with the Amazon Relational Database Service
(Amazon RDS) to list the databases in your account.
"""
import boto3
from botocore.exceptions import ClientError
# Create an RDS client
rds_client = boto3.client("rds")
# Create a paginator for the describe_db_instances operation
paginator = rds_client.get_paginator("describe_db_instances")
try:
# Use the paginator to get a list of DB instances
response_iterator = paginator.paginate(
PaginationConfig={
"MaxItems": 123,
"PageSize": 50, # Adjust PageSize as needed
"StartingToken": None,
}
)
# Iterate through the pages of the response
instances_found = False
for page in response_iterator:
if "DBInstances" in page and page["DBInstances"]:
instances_found = True
print("Your RDS instances are:")
for db in page["DBInstances"]:
print(db["DBInstanceIdentifier"])
if not instances_found:
print("No RDS instances found!")
except ClientError as e:
print(f"Couldn't list RDS instances. Here's why: {e.response['Error']['Message']}")
- Ruby
-
- Kit SDK pour Ruby
-
require 'aws-sdk-rds'
require 'logger'
# RDSManager is a class responsible for managing RDS operations
# such as listing all RDS DB instances in the current AWS account.
class RDSManager
def initialize(client)
@client = client
@logger = Logger.new($stdout)
end
# Lists and prints all RDS DB instances in the current AWS account.
def list_db_instances
@logger.info('Listing RDS DB instances')
paginator = @client.describe_db_instances
instances = []
paginator.each_page do |page|
instances.concat(page.db_instances)
end
if instances.empty?
@logger.info('No instances found.')
else
@logger.info("Found #{instances.count} instance(s):")
instances.each do |instance|
@logger.info(" * #{instance.db_instance_identifier} (#{instance.db_instance_status})")
end
end
end
end
if $PROGRAM_NAME == __FILE__
rds_client = Aws::RDS::Client.new(region: 'us-west-2')
manager = RDSManager.new(rds_client)
manager.list_db_instances
end