template.yaml

AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: >
  incident-senpai

Parameters:
  SlackBotToken:
    Type: String
    Description: Your Slack Bot Token
  SlackSigningSecret:
    Type: String
    Description: Your Slack Signing Secret
  Architecture:
    Type: String
    Description: Lambda Runtime Architecture
    Default: x86_64
    AllowedValues:
      - x86_64
      - arm64

# More info about Globals: https://github.com/awslabs/serverless-application-model/blob/master/docs/globals.rst
Globals:
  Function:
    Runtime: nodejs18.x
    Architectures:
      - !Ref Architecture
    Layers:
      - !Ref ConfigLayer
    Environment:
      Variables:
        SLACK_BOT_TOKEN: !Ref SlackBotToken
        SLACK_SIGNING_SECRET: !Ref SlackSigningSecret

Resources:
  BotFunction:
    Type: AWS::Serverless::Function
    Properties:
      MemorySize: 256
      Timeout: 3
      CodeUri: bot-function/
      Handler: app.lambdaHandler
      FunctionUrlConfig:
        AuthType: NONE
      Environment:
        Variables:
          ASYNC_TASK_QUEUE_URL: !GetAtt AsyncTaskQueue.QueueUrl
      Role: !GetAtt BotFunctionRole.Arn
    Metadata:
      BuildMethod: esbuild
      BuildProperties:
        Minify: true
        Target: "es2020"
        Sourcemap: false
        EntryPoints:
          - app.ts

  BotFunctionRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: "2012-10-17"
        Statement:
          - Effect: "Allow"
            Action: "sts:AssumeRole"
            Principal:
              Service: lambda.amazonaws.com
      Policies:
        - PolicyName: "incident-senpai-bot-function-policy"
          PolicyDocument:
            Version: "2012-10-17"
            Statement:
              - Effect: "Allow"
                Action:
                  - sqs:SendMessage
                Resource: !GetAtt AsyncTaskQueue.Arn
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole

  AsyncFunction:
    Type: AWS::Serverless::Function
    Properties:
      MemorySize: 128
      Timeout: 30
      CodeUri: async-function/
      Handler: app.lambdaHandler
      Events:
        AsyncEvent:
          Type: SQS
          Properties:
            Queue: !GetAtt AsyncTaskQueue.Arn
            BatchSize: 10
            Enabled: true
    Metadata:
      BuildMethod: esbuild
      BuildProperties:
        Minify: true
        Target: "es2020"
        Sourcemap: false
        EntryPoints:
          - app.ts

  AsyncTaskQueue:
    Type: AWS::SQS::Queue
    Properties:
      QueueName: incident-senpai-async-task-queue

  ConfigLayer:
    Type: AWS::Serverless::LayerVersion
    Properties:
      LayerName: incident-senpai-config
      Description: incident-senpai config layer
      ContentUri: layers/
      CompatibleArchitectures:
        - x86_64
        - arm64
      CompatibleRuntimes:
        - nodejs18.x
      RetentionPolicy: Retain
    Metadata:
      BuildMethod: makefile
Outputs:
  BotFunction:
    Description: "Lambda Function ARN"
    Value: !GetAtt BotFunction.Arn
  BotFunctionUrl:
    Description: "Lambda Function URL"
    Value: !GetAtt BotFunctionUrl.FunctionUrl