template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  Serverless pattern - Lambda durable function invoking another AWS Lambda function (Python).
  Demonstrates how a Lambda durable function can use context.invoke() to call a standard
  Lambda function as a checkpointed step in its workflow.

Globals:
  Function:
    Timeout: 30
    MemorySize: 128

Resources:
  # Standard AWS Lambda function that processes sample values
  ProcessorFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: processor_function.lambda_handler
      Runtime: python3.14
      CodeUri: src/

  # Lambda durable function that orchestrates the workflow
  DurableLambdaFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: durable_lambda_function.lambda_handler
      Runtime: python3.14
      CodeUri: src/
      Timeout: 600
      DurableConfig:
        ExecutionTimeout: 600
        RetentionPeriodInDays: 7
      AutoPublishAlias: live
      Environment:
        Variables:
          PROCESSOR_FUNCTION_NAME: !Ref ProcessorFunction
      Policies:
        - arn:aws:iam::aws:policy/service-role/AWSLambdaBasicDurableExecutionRolePolicy
        - LambdaInvokePolicy:
            FunctionName: !Ref ProcessorFunction

Outputs:
  DurableLambdaFunctionArn:
    Description: ARN of Lambda durable function
    Value: !GetAtt DurableLambdaFunction.Arn
  DurableLambdaFunctionAliasArn:
    Description: Alias ARN of the Lambda durable function (use this for invocations)
    Value: !Ref DurableLambdaFunction.Alias
  ProcessorFunctionArn:
    Description: ARN of the processor Lambda function
    Value: !GetAtt ProcessorFunction.Arn