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 自動化 EMR Serverless Amazon EventBridge
<a name="using-eventbridge"></a>

您可以使用 Amazon EventBridge 自動化您的 AWS 服務 並自動回應系統事件，例如應用程式可用性問題或資源變更。EventBridge 提供近乎即時的系統事件串流，說明 AWS 資源的變更。您可編寫簡單的規則，來指示您在意的事件，以及當事件符合規則時所要自動執行的動作。使用 EventBridge，您可以自動：
+ 叫用 AWS Lambda 函數
+ 將事件轉送至 Amazon Kinesis Data Streams
+ 啟用 AWS Step Functions 狀態機器
+ 通知 Amazon SNS 主題或 Amazon SQS 佇列

例如，當您搭配 EMR Serverless 使用 EventBridge 時，您可以在 ETL 任務成功時啟用 AWS Lambda 函數，或在 ETL 任務失敗時通知 Amazon SNS 主題。

EMR Serverless 發出四種類型的事件：
+ 應用程式狀態變更事件 – 發出應用程式每個狀態變更的事件。如需應用程式狀態的詳細資訊，請參閱 [應用程式狀態](applications.md#application-states)。
+ 任務執行狀態變更事件 – 發出任務執行之每個狀態變更的事件。如需 的詳細資訊，請參閱 [作業執行狀態](job-states.md)。
+ 任務執行重試事件 – 從 Amazon EMR Serverless 7.1.0 版和更新版本發出任務執行每次重試的事件。
+ 任務資源使用率更新事件 – 以接近 30 分鐘的間隔發出任務執行的資源使用率更新的事件。

## EMR Serverless EventBridge 事件範例
<a name="using-eventbridge-examples"></a>

EMR Serverless 報告的事件會`aws.emr-serverless`指派給 的值`source`，如下列範例所示。

**應用程式狀態變更事件**

下列範例事件顯示`CREATING`處於 狀態的應用程式。

```
{
    "version": "0",
    "id": "9fd3cf79-1ff1-b633-4dd9-34508dc1e660",
    "detail-type": "EMR Serverless Application State Change",
    "source": "aws.emr-serverless",
    "account": "123456789012",
    "time": "2022-05-31T21:16:31Z",
    "region": "us-east-1",
    "resources": [],
    "detail": {
        "applicationId": "00f1cbsc6anuij25",
        "applicationName": "3965ad00-8fba-4932-a6c8-ded32786fd42",
        "arn": "arn:aws:emr-serverless:us-east-1:111122223333:/applications/00f1cbsc6anuij25",
        "releaseLabel": "emr-6.6.0",
        "state": "CREATING",
        "type": "HIVE",
        "createdAt": "2022-05-31T21:16:31.547953Z",
        "updatedAt": "2022-05-31T21:16:31.547970Z",
        "autoStopConfig": {
            "enabled": true,
            "idleTimeout": 15
        },
        "autoStartConfig": {
            "enabled": true
        }
    }
}
```

**任務執行狀態變更事件**

下列範例事件顯示從 `SCHEDULED` 狀態移至 `RUNNING` 狀態的任務執行。

```
{
    "version": "0",
    "id": "00df3ec6-5da1-36e6-ab71-20f0de68f8a0",
    "detail-type": "EMR Serverless Job Run State Change",
    "source": "aws.emr-serverless",
    "account": "123456789012",
    "time": "2022-05-31T21:07:42Z",
    "region": "us-east-1",
    "resources": [],
    "detail": {
        "jobRunId": "00f1cbn5g4bb0c01",
        "applicationId": "00f1982r1uukb925",
        "arn": "arn:aws:emr-serverless:us-east-1:123456789012:/applications/00f1982r1uukb925/jobruns/00f1cbn5g4bb0c01",
        "releaseLabel": "emr-6.6.0",
        "state": "RUNNING",
        "previousState": "SCHEDULED",
        "createdBy": "arn:aws:sts::123456789012:assumed-role/TestRole-402dcef3ad14993c15d28263f64381e4cda34775/6622b6233b6d42f59c25dd2637346242",
        "updatedAt": "2022-05-31T21:07:42.299487Z",
        "createdAt": "2022-05-31T21:07:25.325900Z"
    }
}
```

**任務執行重試事件**

以下是任務執行重試事件的範例。

```
{
    "version": "0",
    "id": "00df3ec6-5da1-36e6-ab71-20f0de68f8a0",
    "detail-type": "EMR Serverless Job Run Retry",
    "source": "aws.emr-serverless",
    "account": "123456789012",
    "time": "2022-05-31T21:07:42Z",
    "region": "us-east-1",
    "resources": [],
    "detail": {
        "jobRunId": "00f1cbn5g4bb0c01",
        "applicationId": "00f1982r1uukb925",
        "arn": "arn:aws:emr-serverless:us-east-1:123456789012:/applications/00f1982r1uukb925/jobruns/00f1cbn5g4bb0c01",
        "releaseLabel": "emr-6.6.0",
        "createdBy": "arn:aws:sts::123456789012:assumed-role/TestRole-402dcef3ad14993c15d28263f64381e4cda34775/6622b6233b6d42f59c25dd2637346242",
        "updatedAt": "2022-05-31T21:07:42.299487Z",
        "createdAt": "2022-05-31T21:07:25.325900Z",
        //Attempt Details
        "previousAttempt": 1,
        "previousAttemptState": "FAILED",
        "previousAttemptCreatedAt": "2022-05-31T21:07:25.325900Z",
        "previousAttemptEndedAt": "2022-05-31T21:07:30.325900Z",
        "newAttempt": 2,
        "newAttemptCreatedAt": "2022-05-31T21:07:30.325900Z"
    }
}
```

**任務資源使用率更新**

下列範例事件顯示任務在執行後移至終端狀態的最終資源使用率更新。

```
{
    "version": "0",
    "id": "00df3ec6-5da1-36e6-ab71-20f0de68f8a0",
    "detail-type": "EMR Serverless Job Resource Utilization Update",
    "source": "aws.emr-serverless",
    "account": "123456789012",
    "time": "2022-05-31T21:07:42Z",
    "region": "us-east-1",
    "resources": [
        "arn:aws:emr-serverless:us-east-1:123456789012:/applications/00f1982r1uukb925/jobruns/00f1cbn5g4bb0c01"
    ],
    "detail": {
        "applicationId": "00f1982r1uukb925",
        "jobRunId": "00f1cbn5g4bb0c01",
        "attempt": 1,
        "mode": "BATCH",
        "createdAt": "2022-05-31T21:07:25.325900Z",
        "startedAt": "2022-05-31T21:07:26.123Z",
        "calculatedFrom": "2022-05-31T21:07:42.299487Z",
        "calculatedTo": "2022-05-31T21:07:30.325900Z",
        "resourceUtilizationFinal": true,
        "resourceUtilizationForInterval": {
            "vCPUHour": 0.023,
            "memoryGBHour": 0.114,
            "storageGBHour": 0.228
        },
        "billedResourceUtilizationForInterval": {
            "vCPUHour": 0.067,
            "memoryGBHour": 0.333,
            "storageGBHour": 0
        },
        "totalResourceUtilization": {
            "vCPUHour": 0.023,
            "memoryGBHour": 0.114,
            "storageGBHour": 0.228
        },
        "totalBilledResourceUtilization": {
            "vCPUHour": 0.067,
            "memoryGBHour": 0.333,
            "storageGBHour": 0
        }
    }
}
```

只有在任務已移至執行中狀態時，**startedAt** 欄位才會出現在事件中。