为 CodeCommit 来源（Amazon CloudFormation 模板）创建 EventBridge 规则 - Amazon CodePipeline
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为 CodeCommit 来源（Amazon CloudFormation 模板）创建 EventBridge 规则

Amazon CloudFormation 要使用创建规则，请更新您的模板，如下所示。

更新您的管道 Amazon CloudFormation 模板并创建 EventBridge 规则

  1. 在模板下的模板中Resources，使用AWS::IAM::Role Amazon CloudFormation 资源配置允许您的活动启动管道的IAM角色。此条目将创建一个使用两个策略的角色：

    • 第一个策略允许代入角色。

    • 第二个策略提供启动管道所需的权限。

    我为何做出此更改？ 添加AWS::IAM::Role资源可以 Amazon CloudFormation 为创建权限 EventBridge。此资源已添加到您的 Amazon CloudFormation 堆栈中。

    YAML
      EventRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: 2012-10-17
        Statement:
          -
            Effect: Allow
            Principal:
              Service:
                - events.amazonaws.com
            Action: sts:AssumeRole
      Path: /
      Policies:
        -
          PolicyName: eb-pipeline-execution
          PolicyDocument:
            Version: 2012-10-17
            Statement:
              -
                Effect: Allow
                Action: codepipeline:StartPipelineExecution
                Resource: !Join [ '', [ 'arn:aws:codepipeline:', !Ref 'AWS::Region', ':', !Ref 'AWS::AccountId', ':', !Ref AppPipeline ] ]
    JSON
    "EventRole": {
  "Type": "AWS::IAM::Role", 
  "Properties": {
    "AssumeRolePolicyDocument": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Effect": "Allow",
          "Principal": {
            "Service": [
              "events.amazonaws.com"
            ]
          },
          "Action": "sts:AssumeRole"
        }
      ]
    },
    "Path": "/",
    "Policies": [
      {
        "PolicyName": "eb-pipeline-execution",
        "PolicyDocument": {
          "Version": "2012-10-17",
          "Statement": [
            {
              "Effect": "Allow",
              "Action": "codepipeline:StartPipelineExecution",
              "Resource": {
                "Fn::Join": [
                  "",
                  [
                    "arn:aws:codepipeline:",
                    {
                      "Ref": "AWS::Region"
                    },
                    ":",
                    {
                      "Ref": "AWS::AccountId"
                    },
                    ":",
                    {
                      "Ref": "AppPipeline"
                    }
                  ]

...

  2. 在模板的下方Resources，使用AWS::Events::Rule Amazon CloudFormation 资源添加 EventBridge 规则。此事件模式会创建一个事件，以监控向存储库推送更改的操作。当 EventBridge 检测到存储库状态更改时，将在目标管道StartPipelineExecution上调用该规则。

    我为何做出此更改？ 添加AWS::Events::Rule资源 Amazon CloudFormation 即可创建事件。此资源已添加到您的 Amazon CloudFormation 堆栈中。

    YAML
      EventRule:
    Type: AWS::Events::Rule
    Properties:
      EventPattern:
        source:
          - aws.codecommit
        detail-type:
          - 'CodeCommit Repository State Change'
        resources:
          - !Join [ '', [ 'arn:aws:codecommit:', !Ref 'AWS::Region', ':', !Ref 'AWS::AccountId', ':', !Ref RepositoryName ] ]
        detail:
          event:
            - referenceCreated
            - referenceUpdated
          referenceType:
            - branch
          referenceName:
            - main
      Targets:
        -
          Arn: 
            !Join [ '', [ 'arn:aws:codepipeline:', !Ref 'AWS::Region', ':', !Ref 'AWS::AccountId', ':', !Ref AppPipeline ] ]
          RoleArn: !GetAtt EventRole.Arn
          Id: codepipeline-AppPipeline
    JSON
    
"EventRule": {
  "Type": "AWS::Events::Rule",
  "Properties": {
    "EventPattern": {
      "source": [
        "aws.codecommit"
      ],
      "detail-type": [
        "CodeCommit Repository State Change"
      ],
      "resources": [
        {
          "Fn::Join": [
            "",
            [
              "arn:aws:codecommit:",
              {
                "Ref": "AWS::Region"
              },
              ":",
              {
                "Ref": "AWS::AccountId"
              },
              ":",
              {
                "Ref": "RepositoryName"
              }
            ]
          ]
        }
      ],
      "detail": {
        "event": [
          "referenceCreated",
          "referenceUpdated"
        ],
        "referenceType": [
          "branch"
        ],
        "referenceName": [
          "main"
        ]
      }
    },
    "Targets": [
      {
        "Arn": {
          "Fn::Join": [
            "",
            [
              "arn:aws:codepipeline:",
              {
                "Ref": "AWS::Region"
              },
              ":",
              {
                "Ref": "AWS::AccountId"
              },
              ":",
              {
                "Ref": "AppPipeline"
              }
            ]
          ]
        },
        "RoleArn": {
          "Fn::GetAtt": [
            "EventRole",
            "Arn"
          ]
        },
        "Id": "codepipeline-AppPipeline"
      }
    ]
  }
},

  3. 将更新后的模板保存到本地计算机，然后打开 Amazon CloudFormation 控制台。

  4. 选择堆栈，然后选择为当前堆栈创建更改集。

  5. 上传模板，然后查看 Amazon CloudFormation中列出的更改。这些是要对堆栈进行的更改。您应在列表中看到新资源。

  6. 选择执行。

编辑管道的 PollForSourceChanges参数
重要

许多情况下，当您创建管道时，PollForSourceChanges 参数默认为 true。添加基于事件的更改检测时，必须将参数添加到输出并将其设置为 false 以禁用轮询。否则，您的管道将针对单个源更改启动两次。有关详细信息，请参阅PollForSourceChanges参数的有效设置。

  • 在模板中，将 PollForSourceChanges 更改为 false。如果您未在管道定义中包含 PollForSourceChanges，请添加它并将它设置为 false。

    我为何做出此更改？ 将此参数更改为 false 将关闭定期检查，因此您只能使用基于事件的更改检测。

    YAML
              Name: Source
          Actions: 
            - 
              Name: SourceAction
              ActionTypeId: 
                Category: Source
                Owner: AWS
                Version: 1
                Provider: CodeCommit
              OutputArtifacts: 
                - Name: SourceOutput
              Configuration: 
                BranchName: !Ref BranchName
                RepositoryName: !Ref RepositoryName
                PollForSourceChanges: false
              RunOrder: 1
    JSON
    {
  "Name": "Source", 
  "Actions": [
    {
      "Name": "SourceAction",
      "ActionTypeId": {
        "Category": "Source",
        "Owner": "AWS",
        "Version": 1,
        "Provider": "CodeCommit"
      },
      "OutputArtifacts": [
        {
          "Name": "SourceOutput"
        }
      ],
      "Configuration": {
        "BranchName": {
          "Ref": "BranchName"
        },
        "RepositoryName": {
          "Ref": "RepositoryName"
        },
        "PollForSourceChanges": false
      },
      "RunOrder": 1
    }
  ]
},