outputTemplate.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: CD Demo Lambda
Resources:
  HelloWorld:
    Type: AWS::Serverless::Function
    Properties:
      Handler: app.lambdaHandler
      CodeUri: s3://dh-lambda-ci-cd-demo-bucket/c847f03ebbde68bc81dc0e9c5432157b
      Runtime: nodejs10.x
      AutoPublishAlias: live
      Description: Lambda function for CD Demo
      MemorySize: 128
      Timeout: 30
      DeploymentPreference:
        Type: Linear10PercentEvery1Minute
        Alarms:
        - Ref: AliasErrorMetricGreaterThanZeroAlarm
        - Ref: LatestVersionErrorMetricGreaterThanZeroAlarm
        Hooks:
          PreTraffic:
            Ref: PreTrafficHook
          PostTraffic:
            Ref: PostTrafficHook
      Events:
        HelloWorldAPI:
          Type: Api
          Properties:
            Path: /
            Method: get
      Environment:
        Variables:
          REGION: us-west-1
  AliasErrorMetricGreaterThanZeroAlarm:
    Type: AWS::CloudWatch::Alarm
    Properties:
      AlarmDescription: Lambda Function Error > 0
      ComparisonOperator: GreaterThanThreshold
      Dimensions:
      - Name: Resource
        Value:
          Fn::Sub: ${HelloWorld}:live
      - Name: FunctionName
        Value:
          Ref: HelloWorld
      EvaluationPeriods: 2
      MetricName: Errors
      Namespace: AWS/Lambda
      Period: 60
      Statistic: Sum
      Threshold: 0
  LatestVersionErrorMetricGreaterThanZeroAlarm:
    Type: AWS::CloudWatch::Alarm
    Properties:
      AlarmDescription: Lambda Function Error > 0
      ComparisonOperator: GreaterThanThreshold
      Dimensions:
      - Name: Resource
        Value:
          Fn::Sub: ${HelloWorld}:live
      - Name: FunctionName
        Value:
          Ref: HelloWorld
      - Name: ExecutedVersion
        Value:
          Fn::GetAtt:
          - HelloWorld
          - Version.Version
      EvaluationPeriods: 2
      MetricName: Errors
      Namespace: AWS/Lambda
      Period: 60
      Statistic: Sum
      Threshold: 0
  PreTrafficHook:
    Type: AWS::Serverless::Function
    Properties:
      Handler: preTrafficHook.handler
      Runtime: nodejs10.x
      CodeUri: s3://dh-lambda-ci-cd-demo-bucket/c847f03ebbde68bc81dc0e9c5432157b
      FunctionName: CodeDeployHook_PreTrafficHook
      Policies:
      - Version: '2012-10-17'
        Statement:
        - Effect: Allow
          Action:
          - codedeploy:PutLifecycleEventHookExecutionStatus
          Resource:
            Fn::Sub: arn:aws:codedeploy:${AWS::Region}:${AWS::AccountId}:deploymentgroup:${ServerlessDeploymentApplication}/*
      - Version: '2012-10-17'
        Statement:
        - Effect: Allow
          Action:
          - lambda:InvokeFunction
          Resource:
            Ref: HelloWorld.Version
      DeploymentPreference:
        Enabled: false
      Timeout: 5
      Environment:
        Variables:
          NewVersion:
            Ref: HelloWorld.Version
  PostTrafficHook:
    Type: AWS::Serverless::Function
    Properties:
      Handler: postTrafficHook.handler
      Runtime: nodejs10.x
      CodeUri: s3://dh-lambda-ci-cd-demo-bucket/c847f03ebbde68bc81dc0e9c5432157b
      FunctionName: CodeDeployHook_PostTrafficHook
      Policies:
      - Version: '2012-10-17'
        Statement:
        - Effect: Allow
          Action:
          - codedeploy:PutLifecycleEventHookExecutionStatus
          Resource:
            Fn::Sub: arn:aws:codedeploy:${AWS::Region}:${AWS::AccountId}:deploymentgroup:${ServerlessDeploymentApplication}/*
      - Version: '2012-10-17'
        Statement:
        - Effect: Allow
          Action:
          - lambda:InvokeFunction
          Resource:
            Ref: HelloWorld.Version
      DeploymentPreference:
        Enabled: false
      Timeout: 5
      Environment:
        Variables:
          NewVersion:
            Ref: HelloWorld.Version