template.yml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31

Metadata:
  AWS::ServerlessRepo::Application:
    Name: cw-logs-to-slack
    Description: Filters CloudWatch logs and publishes them to Slack
    Author: Keeton Hodgson
    SpdxLicenseId: MIT
    # paths are relative to .aws-sam/build directory
    LicenseUrl: ./LICENSE
    ReadmeUrl: ./README.md
    Labels: [serverless,slack,CloudWatch,logs]
    HomePageUrl: https://github.com/keetonian/cw-logs-to-slack
    # Update the semantic version and run sam publish to publish a new version of your app
    SemanticVersion: 1.0.0
    # best practice is to use git tags for each release and link to the version tag as your source code URL
    SourceCodeUrl: https://github.com/keetonian/cw-logs-to-slack/tree/1.0.0

Parameters:
  LogLevel:
    Type: String
    Description: Log level for Lambda function logging, e.g., ERROR, INFO, DEBUG, etc
    Default: INFO
  SlackUrl:
    Description: Webhook URL for integration with Slack
    Type: String
  LogGroupName:
    Description: Log group to listen to (has to be in same account and region)
    Type: String
  FilterPattern:
    Description: Pattern for filtering log events
    Type: String
    Default: ERROR
  OnlySendLogMessage:
    Type: String
    Default: 'False'
    Description: By default, this applicaiton will send the log message, id, and timestamp, unless this is set to True
    AllowedValues: ['True','False']

Resources:
  cwlogstolambda:
    Type: AWS::Serverless::Application
    Properties:
      Location:
        ApplicationId: arn:aws:serverlessrepo:us-east-1:289559741701:applications/cw-logs-to-lambda
        SemanticVersion: 0.0.1
      Parameters: 
        # Name of the function to which this application will send log messages
        DestinationFunctionName: !GetAtt lambdatoslack.Outputs.LambdaToSlackName
        # Pattern for filtering log events
        FilterPattern: !Ref FilterPattern
        # Log group to listen to (has to be in same account and region)
        LogGroupName: !Ref LogGroupName
        # Log level for Lambda function logging, e.g., ERROR, INFO, DEBUG, etc
        LogLevel: !Ref LogLevel
        # By default, this function will send the log message, id, and timestamp, unless this is set to True
        OnlySendLogMessage: !Ref OnlySendLogMessage

  lambdatoslack:
    Type: AWS::Serverless::Application
    Properties:
      Location:
        ApplicationId: arn:aws:serverlessrepo:us-east-1:289559741701:applications/lambda-to-slack
        SemanticVersion: 0.0.1
      Parameters: 
        # Log level for Lambda function logging, e.g., ERROR, INFO, DEBUG, etc
        LogLevel: !Ref LogLevel
        # Webhook URL for integration with Slack
        SlackUrl: !Ref SlackUrl  


Outputs:
  LogsToLambdaName:
    Description: "Log Lambda Function Name"
    Value: !GetAtt cwlogstolambda.Outputs.LogsToLambdaName
  LogsToLambdaArn:
    Description: "Log Lambda Function ARN"
    Value: !GetAtt cwlogstolambda.Outputs.LogsToLambdaArn
  LambdaToSlackName:
    Description: "Slack Lambda Function Name"
    Value: !GetAtt lambdatoslack.Outputs.LambdaToSlackName
  LambdaToSlackArn:
    Description: "Slack Lambda Function ARN"
    Value: !GetAtt lambdatoslack.Outputs.LambdaToSlackArn