D'autres AWS SDK exemples sont disponibles dans le GitHub dépôt AWS Doc SDK Examples.
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Exemples de code pour Auto Scaling à l'aide de AWS SDKs
Les exemples de code suivants vous montrent comment utiliser Amazon EC2 Auto Scaling avec un kit de développement AWS 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 montrent comment appeler des fonctions de service individuelles, vous pouvez les visualiser dans leur 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 service ou en les combinant à d'autres Services AWS.
Ressources supplémentaires
Mise en route
Les exemples de code suivants montrent comment démarrer avec Auto Scaling.
- .NET
-
- AWS SDK for .NET
-
namespace AutoScalingActions;
using Amazon.AutoScaling;
public class HelloAutoScaling
{
/// <summary>
/// Hello Amazon EC2 Auto Scaling. List EC2 Auto Scaling groups.
/// </summary>
/// <param name="args"></param>
/// <returns>Async Task.</returns>
static async Task Main(string[] args)
{
var client = new AmazonAutoScalingClient();
Console.WriteLine("Welcome to Amazon EC2 Auto Scaling.");
Console.WriteLine("Let's get a description of your Auto Scaling groups.");
var response = await client.DescribeAutoScalingGroupsAsync();
response.AutoScalingGroups.ForEach(autoScalingGroup =>
{
Console.WriteLine($"{autoScalingGroup.AutoScalingGroupName}\t{autoScalingGroup.AvailabilityZones}");
});
if (response.AutoScalingGroups.Count == 0)
{
Console.WriteLine("Sorry, you don't have any Amazon EC2 Auto Scaling groups.");
}
}
}
- C++
-
- SDKpour C++
-
Code du fichier CMakeLists CMake .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 autoscaling)
# Set this project's name.
project("hello_autoscaling")
# 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(${PROJECT_NAME}
hello_autoscaling.cpp)
target_link_libraries(${PROJECT_NAME}
${AWSSDK_LINK_LIBRARIES})
Code du fichier source hello_autoscaling.cpp.
#include <aws/core/Aws.h>
#include <aws/autoscaling/AutoScalingClient.h>
#include <aws/autoscaling/model/DescribeAutoScalingGroupsRequest.h>
#include <iostream>
/*
* A "Hello Autoscaling" starter application which initializes an Amazon EC2 Auto Scaling client and describes the
* Amazon EC2 Auto Scaling groups.
*
* main function
*
* Usage: 'hello_autoscaling'
*
*/
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::AutoScaling::AutoScalingClient autoscalingClient(clientConfig);
std::vector<Aws::String> groupNames;
Aws::String nextToken; // Used for pagination.
do {
Aws::AutoScaling::Model::DescribeAutoScalingGroupsRequest request;
if (!nextToken.empty()) {
request.SetNextToken(nextToken);
}
Aws::AutoScaling::Model::DescribeAutoScalingGroupsOutcome outcome =
autoscalingClient.DescribeAutoScalingGroups(request);
if (outcome.IsSuccess()) {
const Aws::Vector<Aws::AutoScaling::Model::AutoScalingGroup> &autoScalingGroups =
outcome.GetResult().GetAutoScalingGroups();
for (auto &group: autoScalingGroups) {
groupNames.push_back(group.GetAutoScalingGroupName());
}
nextToken = outcome.GetResult().GetNextToken();
} else {
std::cerr << "Error with AutoScaling::DescribeAutoScalingGroups. "
<< outcome.GetError().GetMessage()
<< std::endl;
result = 1;
break;
}
} while (!nextToken.empty());
std::cout << "Found " << groupNames.size() << " AutoScaling groups." << std::endl;
for (auto &groupName: groupNames) {
std::cout << "AutoScaling group: " << groupName << std::endl;
}
}
Aws::ShutdownAPI(options); // Should only be called once.
return result;
}
- Java
-
- SDKpour Java 2.x
-
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.autoscaling.AutoScalingClient;
import software.amazon.awssdk.services.autoscaling.model.AutoScalingGroup;
import software.amazon.awssdk.services.autoscaling.model.DescribeAutoScalingGroupsResponse;
import java.util.List;
/**
* Before running this SDK for Java (v2) code example, set up your development
* environment, including your credentials.
*
* For more information, see the following documentation:
*
* https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
*/
public class DescribeAutoScalingGroups {
public static void main(String[] args) throws InterruptedException {
AutoScalingClient autoScalingClient = AutoScalingClient.builder()
.region(Region.US_EAST_1)
.build();
describeGroups(autoScalingClient);
}
public static void describeGroups(AutoScalingClient autoScalingClient) {
DescribeAutoScalingGroupsResponse response = autoScalingClient.describeAutoScalingGroups();
List<AutoScalingGroup> groups = response.autoScalingGroups();
groups.forEach(group -> {
System.out.println("Group Name: " + group.autoScalingGroupName());
System.out.println("Group ARN: " + group.autoScalingGroupARN());
});
}
}
- PHP
-
- SDK pour PHP
-
public function helloService()
{
$autoScalingClient = new AutoScalingClient([
'region' => 'us-west-2',
'version' => 'latest',
'profile' => 'default',
]);
$groups = $autoScalingClient->describeAutoScalingGroups([]);
var_dump($groups);
}
- Python
-
- SDKpour Python (Boto3)
-
import boto3
def hello_autoscaling(autoscaling_client):
"""
Use the AWS SDK for Python (Boto3) to create an Amazon EC2 Auto Scaling client and list
some of the Auto Scaling groups in your account.
This example uses the default settings specified in your shared credentials
and config files.
:param autoscaling_client: A Boto3 Amazon EC2 Auto Scaling client object.
"""
print(
"Hello, Amazon EC2 Auto Scaling! Let's list up to ten of you Auto Scaling groups:"
)
response = autoscaling_client.describe_auto_scaling_groups()
groups = response.get("AutoScalingGroups", [])
if groups:
for group in groups:
print(f"\t{group['AutoScalingGroupName']}: {group['AvailabilityZones']}")
else:
print("There are no Auto Scaling groups in your account.")
if __name__ == "__main__":
hello_autoscaling(boto3.client("autoscaling"))
- Ruby
-
- SDKpour Ruby
-
require 'aws-sdk-autoscaling'
require 'logger'
# AutoScalingManager is a class responsible for managing AWS Auto Scaling operations
# such as listing all Auto Scaling groups in the current AWS account.
class AutoScalingManager
def initialize(client)
@client = client
@logger = Logger.new($stdout)
end
# Gets and prints a list of Auto Scaling groups for the account.
def list_auto_scaling_groups
paginator = @client.describe_auto_scaling_groups
auto_scaling_groups = []
paginator.each_page do |page|
auto_scaling_groups.concat(page.auto_scaling_groups)
end
if auto_scaling_groups.empty?
@logger.info('No Auto Scaling groups found for this account.')
else
auto_scaling_groups.each do |group|
@logger.info("Auto Scaling group name: #{group.auto_scaling_group_name}")
@logger.info(" Group ARN: #{group.auto_scaling_group_arn}")
@logger.info(" Min/max/desired: #{group.min_size}/#{group.max_size}/#{group.desired_capacity}")
@logger.info("\n")
end
end
end
end
if $PROGRAM_NAME == __FILE__
autoscaling_client = Aws::AutoScaling::Client.new
manager = AutoScalingManager.new(autoscaling_client)
manager.list_auto_scaling_groups
end
- Rust
-
- SDKpour Rust
-
async fn list_groups(client: &Client) -> Result<(), Error> {
let resp = client.describe_auto_scaling_groups().send().await?;
println!("Groups:");
let groups = resp.auto_scaling_groups();
for group in groups {
println!(
"Name: {}",
group.auto_scaling_group_name().unwrap_or("Unknown")
);
println!(
"Arn: {}",
group.auto_scaling_group_arn().unwrap_or("unknown"),
);
println!("Zones: {:?}", group.availability_zones(),);
println!();
}
println!("Found {} group(s)", groups.len());
Ok(())
}