文件 AWS 開發套件範例 GitHub 儲存庫中有更多可用的 [AWS SDK 範例](https://github.com/awsdocs/aws-doc-sdk-examples)。

本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

# 使用 的 Amazon ECS 範例 適用於 .NET 的 SDK
<a name="csharp_3_ecs_code_examples"></a>

下列程式碼範例示範如何使用 適用於 .NET 的 AWS SDK 搭配 Amazon ECS 執行動作和實作常見案例。

*Actions* 是大型程式的程式碼摘錄，必須在內容中執行。雖然動作會告訴您如何呼叫個別服務函數，但您可以在其相關情境中查看內容中的動作。

*案例*是向您展示如何呼叫服務中的多個函數或與其他 AWS 服務組合來完成特定任務的程式碼範例。

每個範例均包含完整原始碼的連結，您可在連結中找到如何設定和執行內容中程式碼的相關指示。

**Topics**
+ [動作](#actions)
+ [案例](#scenarios)

## 動作
<a name="actions"></a>

### `ListClusters`
<a name="ecs_ListClusters_csharp_3_topic"></a>

以下程式碼範例顯示如何使用 `ListClusters`。

**適用於 .NET 的 SDK**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv3/ECS#code-examples)中設定和執行。

```
    /// <summary>
    /// List cluster ARNs available.
    /// </summary>
    /// <returns>The ARN list of clusters.</returns>
    public async Task<List<string>> GetClusterARNSAsync()
    {

        Console.WriteLine("Getting a list of all the clusters in your AWS account...");
        List<string> clusterArnList = new List<string>();
        // Get a list of all the clusters in your AWS account
        try
        {

            var listClustersResponse = _ecsClient.Paginators.ListClusters(new ListClustersRequest
            {
            });

            var clusterArns = listClustersResponse.ClusterArns;

            // Print the ARNs of the clusters
            await foreach (var clusterArn in clusterArns)
            {
                clusterArnList.Add(clusterArn);
            }

            if (clusterArnList.Count == 0)
            {
                _logger.LogWarning("No clusters found in your AWS account.");
            }
            return clusterArnList;
        }
        catch (Exception e)
        {
            _logger.LogError($"An error occurred while getting a list of all the clusters in your AWS account. {e.InnerException}");
            throw new Exception($"An error occurred while getting a list of all the clusters in your AWS account. {e.InnerException}");
        }
    }
```
+  如需 API 詳細資訊，請參閱《適用於 .NET 的 AWS SDK API 參考》**中的 [ListClusters](https://docs.aws.amazon.com/goto/DotNetSDKV3/ecs-2014-11-13/ListClusters)。

### `ListServices`
<a name="ecs_ListServices_csharp_3_topic"></a>

以下程式碼範例顯示如何使用 `ListServices`。

**適用於 .NET 的 SDK**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv3/ECS#code-examples)中設定和執行。

```
    /// <summary>
    /// List service ARNs available.
    /// </summary>
    /// <param name="clusterARN">The arn of the ECS cluster.</param>
    /// <returns>The ARN list of services in given cluster.</returns>
    public async Task<List<string>> GetServiceARNSAsync(string clusterARN)
    {
        List<string> serviceArns = new List<string>();

        var request = new ListServicesRequest
        {
            Cluster = clusterARN
        };
        // Call the ListServices API operation and get the list of service ARNs
        var serviceList = _ecsClient.Paginators.ListServices(request);

        await foreach (var serviceARN in serviceList.ServiceArns)
        {
            if (serviceARN is null)
                continue;

            serviceArns.Add(serviceARN);
        }

        if (serviceArns.Count == 0)
        {
            _logger.LogWarning($"No services found in cluster {clusterARN} .");
        }

        return serviceArns;
    }
```
+  如需 API 詳細資訊，請參閱《適用於 .NET 的 AWS SDK API 參考》**中的 [ListServices](https://docs.aws.amazon.com/goto/DotNetSDKV3/ecs-2014-11-13/ListServices)。

### `ListTasks`
<a name="ecs_ListTasks_csharp_3_topic"></a>

以下程式碼範例顯示如何使用 `ListTasks`。

**適用於 .NET 的 SDK**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv3/ECS#code-examples)中設定和執行。

```
    /// <summary>
    /// List task ARNs available.
    /// </summary>
    /// <param name="clusterARN">The arn of the ECS cluster.</param>
    /// <returns>The ARN list of tasks in given cluster.</returns>
    public async Task<List<string>> GetTaskARNsAsync(string clusterARN)
    {
        // Set up the request to describe the tasks in the service
        var listTasksRequest = new ListTasksRequest
        {
            Cluster = clusterARN
        };
        List<string> taskArns = new List<string>();

        // Call the ListTasks API operation and get the list of task ARNs
        var tasks = _ecsClient.Paginators.ListTasks(listTasksRequest);

        await foreach (var task in tasks.TaskArns)
        {
            if (task is null)
                continue;


            taskArns.Add(task);
        }

        if (taskArns.Count == 0)
        {
            _logger.LogWarning("No tasks found in cluster: " + clusterARN);
        }

        return taskArns;
    }
```
+  如需 API 詳細資訊，請參閱《適用於 .NET 的 AWS SDK API 參考》**中的 [ListTasks](https://docs.aws.amazon.com/goto/DotNetSDKV3/ecs-2014-11-13/ListTasks)。

## 案例
<a name="scenarios"></a>

### 取得叢集、服務和任務的 ARN 資訊
<a name="ecs_Scenario_GetClustersServicesAndTasks_csharp_3_topic"></a>

以下程式碼範例顯示做法：
+ 取得所有叢集的清單。
+ 取得叢集的服務。
+ 取得叢集的任務。

**適用於 .NET 的 SDK**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv3/ECS#code-examples)中設定和執行。
在命令提示中執行互動式案例。  

```
using Amazon.ECS;
using ECSActions;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Logging.Console;
using Microsoft.Extensions.Logging.Debug;

namespace ECSScenario;

public class ECSScenario
{
    /*
    Before running this .NET code example, set up your development environment, including your credentials.


    This .NET example performs the following tasks:
        1. List ECS Cluster ARNs.
        2. List services in every cluster
        3. List Task ARNs in every cluster.
    */

    private static ILogger logger = null!;
    private static ECSWrapper _ecsWrapper = null!;

    static async Task Main(string[] args)
    {
        // Set up dependency injection for the Amazon service.
        using var host = Host.CreateDefaultBuilder(args)
            .ConfigureLogging(logging =>
                logging.AddFilter("System", LogLevel.Debug)
                    .AddFilter<DebugLoggerProvider>("Microsoft", LogLevel.Information)
                    .AddFilter<ConsoleLoggerProvider>("Microsoft", LogLevel.Trace))
        .Build();

        ILoggerFactory loggerFactory = LoggerFactory.Create(builder =>
        {
            builder.AddConsole();
        });

        logger = LoggerFactory.Create(builder => { builder.AddConsole(); })
            .CreateLogger<ECSScenario>();

        var loggerECSWarpper = LoggerFactory.Create(builder => { builder.AddConsole(); })
          .CreateLogger<ECSWrapper>();

        var amazonECSClient = new AmazonECSClient();

        _ecsWrapper = new ECSWrapper(amazonECSClient, loggerECSWarpper);

        Console.WriteLine(new string('-', 80));
        Console.WriteLine("Welcome to the Amazon ECS example scenario.");
        Console.WriteLine(new string('-', 80));

        try
        {
            await ListClusterARNs();
            await ListServiceARNs();
            await ListTaskARNs();

        }
        catch (Exception ex)
        {
            logger.LogError(ex, "There was a problem executing the scenario.");
        }
    }

    /// <summary>
    /// List ECS Cluster ARNs
    /// </summary>
    private static async Task ListClusterARNs()
    {
        Console.WriteLine(new string('-', 80));
        Console.WriteLine($"1. List Cluster ARNs from ECS.");
        var arns = await _ecsWrapper.GetClusterARNSAsync();

        foreach (var arn in arns)
        {
            Console.WriteLine($"Cluster arn: {arn}");
            Console.WriteLine($"Cluster name: {arn.Split("/").Last()}");
        }

        Console.WriteLine(new string('-', 80));
    }


    /// <summary>
    /// List services in every cluster
    /// </summary>
    private static async Task ListServiceARNs()
    {
        Console.WriteLine(new string('-', 80));
        Console.WriteLine($"2. List Service ARNs in every cluster.");
        var clusterARNs = await _ecsWrapper.GetClusterARNSAsync();

        foreach (var clusterARN in clusterARNs)
        {
            Console.WriteLine($"Getting services for cluster name: {clusterARN.Split("/").Last()}");
            Console.WriteLine(new string('.', 5));


            var serviceARNs = await _ecsWrapper.GetServiceARNSAsync(clusterARN);

            foreach (var serviceARN in serviceARNs)
            {
                Console.WriteLine($"Service arn: {serviceARN}");
                Console.WriteLine($"Service name: {serviceARN.Split("/").Last()}");
            }
        }

        Console.WriteLine(new string('-', 80));
    }


    /// <summary>
    /// List tasks in every cluster
    /// </summary>
    private static async Task ListTaskARNs()
    {
        Console.WriteLine(new string('-', 80));
        Console.WriteLine($"3. List Task ARNs in every cluster.");
        var clusterARNs = await _ecsWrapper.GetClusterARNSAsync();

        foreach (var clusterARN in clusterARNs)
        {
            Console.WriteLine($"Getting tasks for cluster name: {clusterARN.Split("/").Last()}");
            Console.WriteLine(new string('.', 5));

            var taskARNs = await _ecsWrapper.GetTaskARNsAsync(clusterARN);

            foreach (var taskARN in taskARNs)
            {
                Console.WriteLine($"Task arn: {taskARN}");
            }
        }
        Console.WriteLine(new string('-', 80));
    }
}
```
案例呼叫並用以管理 Amazon ECS 動作的包裝函式方式。  

```
using Amazon.ECS;
using Amazon.ECS.Model;
using Microsoft.Extensions.Logging;

namespace ECSActions;

public class ECSWrapper
{
    private readonly AmazonECSClient _ecsClient;
    private readonly ILogger<ECSWrapper> _logger;

    /// <summary>
    /// Constructor for the ECS wrapper.
    /// </summary>
    /// <param name="ecsClient">The injected ECS client.</param>
    /// <param name="logger">The injected logger for the wrapper.</param>
    public ECSWrapper(AmazonECSClient ecsClient, ILogger<ECSWrapper> logger)

    {
        _logger = logger;
        _ecsClient = ecsClient;
    }

    /// <summary>
    /// List cluster ARNs available.
    /// </summary>
    /// <returns>The ARN list of clusters.</returns>
    public async Task<List<string>> GetClusterARNSAsync()
    {

        Console.WriteLine("Getting a list of all the clusters in your AWS account...");
        List<string> clusterArnList = new List<string>();
        // Get a list of all the clusters in your AWS account
        try
        {

            var listClustersResponse = _ecsClient.Paginators.ListClusters(new ListClustersRequest
            {
            });

            var clusterArns = listClustersResponse.ClusterArns;

            // Print the ARNs of the clusters
            await foreach (var clusterArn in clusterArns)
            {
                clusterArnList.Add(clusterArn);
            }

            if (clusterArnList.Count == 0)
            {
                _logger.LogWarning("No clusters found in your AWS account.");
            }
            return clusterArnList;
        }
        catch (Exception e)
        {
            _logger.LogError($"An error occurred while getting a list of all the clusters in your AWS account. {e.InnerException}");
            throw new Exception($"An error occurred while getting a list of all the clusters in your AWS account. {e.InnerException}");
        }
    }

    /// <summary>
    /// List service ARNs available.
    /// </summary>
    /// <param name="clusterARN">The arn of the ECS cluster.</param>
    /// <returns>The ARN list of services in given cluster.</returns>
    public async Task<List<string>> GetServiceARNSAsync(string clusterARN)
    {
        List<string> serviceArns = new List<string>();

        var request = new ListServicesRequest
        {
            Cluster = clusterARN
        };
        // Call the ListServices API operation and get the list of service ARNs
        var serviceList = _ecsClient.Paginators.ListServices(request);

        await foreach (var serviceARN in serviceList.ServiceArns)
        {
            if (serviceARN is null)
                continue;

            serviceArns.Add(serviceARN);
        }

        if (serviceArns.Count == 0)
        {
            _logger.LogWarning($"No services found in cluster {clusterARN} .");
        }

        return serviceArns;
    }

    /// <summary>
    /// List task ARNs available.
    /// </summary>
    /// <param name="clusterARN">The arn of the ECS cluster.</param>
    /// <returns>The ARN list of tasks in given cluster.</returns>
    public async Task<List<string>> GetTaskARNsAsync(string clusterARN)
    {
        // Set up the request to describe the tasks in the service
        var listTasksRequest = new ListTasksRequest
        {
            Cluster = clusterARN
        };
        List<string> taskArns = new List<string>();

        // Call the ListTasks API operation and get the list of task ARNs
        var tasks = _ecsClient.Paginators.ListTasks(listTasksRequest);

        await foreach (var task in tasks.TaskArns)
        {
            if (task is null)
                continue;


            taskArns.Add(task);
        }

        if (taskArns.Count == 0)
        {
            _logger.LogWarning("No tasks found in cluster: " + clusterARN);
        }

        return taskArns;
    }
}
```
+ 如需 API 詳細資訊，請參閱《*適用於 .NET 的 AWS SDK API 參考*》中的下列主題。
  + [ListClusters](https://docs.aws.amazon.com/goto/DotNetSDKV3/ecs-2014-11-13/ListClusters)
  + [ListServices](https://docs.aws.amazon.com/goto/DotNetSDKV3/ecs-2014-11-13/ListServices)
  + [ListTasks](https://docs.aws.amazon.com/goto/DotNetSDKV3/ecs-2014-11-13/ListTasks)