template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: Setup notifications from CodePipeline to AWS Chatbot

Metadata:
  AWS::ServerlessRepo::Application:
    Name: codepipeline-chatbot
    Description: Setup notifications from CodePipeline to AWS Chatbot
    Author: Symphonia
    SpdxLicenseId: Apache-2.0
    LicenseUrl: LICENSE
    ReadmeUrl: README.md
    Labels: ['codepipeline', 'cd', 'devops', 'chatbot', 'chatops', 'slack']
    HomePageUrl: https://github.com/symphoniacloud/codepipline-chatbot
    SourceCodeUrl: https://github.com/symphoniacloud/codepipline-chatbot

Parameters:
  CodePipeline:
    Description: The name of the CodePipeline to capture notifications from. Equal to the "Ref" value of the AWS::CodePipeline::Pipeline resource
    Type: String
  NotificationRuleName:
    Description: Set if you wish to override the name given to the CodeStar Notification Rule. Defaults to the value of the CodePipeline parameter.
    Type: String
    Default: ''
    MaxLength: 64
  DetailType:
    Description: The level of detail to include in the notifications for this resource. (see https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-codestarnotifications-notificationrule.html)
    Default: FULL
    Type: String

Conditions:
  NotificationRuleNameIsSet: !Not [!Equals [ !Ref NotificationRuleName, '' ]]

Outputs:
  SNSTopicName:
    Description: Name of the SNS Topic that you can connect to AWS Chatbot
    Value: !GetAtt PipelineNotificationsTopic.TopicName

Resources:
  PipelineNotificationsTopic:
    Type: AWS::SNS::Topic
  
  PipelineNotificationsTopicPolicy:
    Type: AWS::SNS::TopicPolicy
    Properties:
      Topics:
        - !Ref PipelineNotificationsTopic
      PolicyDocument: 
        Statement:
        - Action: 'SNS:Publish'
          Effect: Allow
          Resource: !Ref PipelineNotificationsTopic
          Principal:
            Service: codestar-notifications.amazonaws.com
  
  NotificationRule:
    Type: AWS::CodeStarNotifications::NotificationRule
    Properties:
      # Name is required, unlike for most resource types
      Name: !If [ NotificationRuleNameIsSet, !Ref NotificationRuleName, !Ref CodePipeline ]
      Resource: !Sub "arn:aws:codepipeline:${AWS::Region}:${AWS::AccountId}:${CodePipeline}"
      DetailType: !Ref DetailType
      EventTypeIds:
        - codepipeline-pipeline-pipeline-execution-failed
        - codepipeline-pipeline-pipeline-execution-canceled
        - codepipeline-pipeline-pipeline-execution-started
        - codepipeline-pipeline-pipeline-execution-resumed
        - codepipeline-pipeline-pipeline-execution-succeeded
        - codepipeline-pipeline-pipeline-execution-superseded
        - codepipeline-pipeline-manual-approval-needed
      Targets:
        - TargetType: SNS
          TargetAddress: !Ref PipelineNotificationsTopic