Serverless-Task-Scheduler/template.yaml at main · Photon3009/Serverless-Task-Scheduler · GitHub

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AWSTemplateFormatVersion: 2010-09-09
Description: >-
  task-scheduler
Transform:
  - AWS::Serverless-2016-10-31

# Resources declares the AWS resources that you want to include in the stack
# https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/resources-section-structure.html
Resources:
  # Each Lambda function is defined by properties:
  # https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction

  # ✅ Task Scheduling Lambda (POST /schedule-task)
  scheduleTaskFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: src/handlers/schedule-task.scheduleTaskHandler
      Runtime: nodejs22.x
      MemorySize: 128
      Timeout: 100
      Description: Schedule a new task
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref TasksTable
        - Statement:
            - Effect: Allow
              Action:
                - events:PutRule
                - events:PutTargets
              Resource: "*"
      Environment:
        Variables:
          TASKS_TABLE: !Ref TasksTable
          EXECUTE_TASK_LAMBDA_ARN: !GetAtt executeTaskFunction.Arn
      Events:
        Api:
          Type: Api
          Properties:
            Path: /schedule-task
            Method: POST

  # ✅ Lambda for Executing Due Tasks
  executeTaskFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: src/handlers/execute-task.executeTaskHandler
      Runtime: nodejs22.x
      MemorySize: 128
      Timeout: 60
      Description: Executes scheduled tasks that are due
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref TasksTable
      Environment:
        Variables:
          TASKS_TABLE: !Ref TasksTable

  # ✅ EventBridge Rule for Triggering Task Execution
  InvokePermissionForEventBridge:
    Type: AWS::Lambda::Permission
    Properties:
      FunctionName: !GetAtt executeTaskFunction.Arn
      Action: lambda:InvokeFunction
      Principal: events.amazonaws.com

  # Simple syntax to create a DynamoDB table with a single attribute primary key, more in
  # https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlesssimpletable

  # ✅ DynamoDB Table for Storing Tasks
  TasksTable:
    Type: AWS::DynamoDB::Table
    Properties:
      TableName: tasks-table
      AttributeDefinitions:
        - AttributeName: id
          AttributeType: S
      KeySchema:
        - AttributeName: id
          KeyType: HASH
      ProvisionedThroughput:
        ReadCapacityUnits: 5
        WriteCapacityUnits: 5

  ApplicationResourceGroup:
    Type: AWS::ResourceGroups::Group
    Properties:
      Name:
        Fn::Sub: ApplicationInsights-SAM-${AWS::StackName}
      ResourceQuery:
        Type: CLOUDFORMATION_STACK_1_0


  ApplicationInsightsMonitoring:
    Type: AWS::ApplicationInsights::Application
    Properties:
      ResourceGroupName:
        Ref: ApplicationResourceGroup
      AutoConfigurationEnabled: "true"

Outputs:
  WebEndpoint:
    Description: API Gateway endpoint URL for Prod stage
    Value: !Sub "https://${ServerlessRestApi}.execute-api.${AWS::Region}.amazonaws.com/Prod/"
# More info about Globals: https://github.com/awslabs/serverless-application-model/blob/master/docs/globals.rst
Globals:
  Function:
    LoggingConfig:
      LogFormat: JSON
    Tracing: Active