template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  typescript-test-samples
  Sample SAM Template for typescript-test-samples

Parameters:
  DeployTestResources:
    Description: The parameter instructs the template whether or not to deploy test resources to your environment.
    Default: "True"
    Type: String
    AllowedValues:
      - "True"
      - "False"
    ConstraintDescription: Allowed values are True and False

Conditions:
  CreateTestResources: !Equals [!Ref DeployTestResources, "True"]

# More info about Globals: https://github.com/awslabs/serverless-application-model/blob/master/docs/globals.rst
Globals:
  Function:
    Timeout: 10
    MemorySize: 512

Resources:

  RecordsStream:
    Type: AWS::Kinesis::Stream
    Properties:
      Name: RecordsStream
      RetentionPeriodHours: 48
      ShardCount: 2

  ProcessedRecordsTable:
    Type: AWS::DynamoDB::Table
    UpdateReplacePolicy: Delete
    Properties:
      AttributeDefinitions:
      - AttributeName: PK
        AttributeType: S
      - AttributeName: SK
        AttributeType: S
      KeySchema:
      - AttributeName: PK
        KeyType: HASH
      - AttributeName: SK
        KeyType: RANGE
      BillingMode: PAY_PER_REQUEST
      SSESpecification:
        SSEEnabled: true
      StreamSpecification:
        !If
        - CreateTestResources
        -
          StreamViewType: NEW_AND_OLD_IMAGES
        - !Ref AWS::NoValue
    Metadata:
      SamResourceId: ProcessedRecordsTable

  RecordProcessorFunction:
    Type: AWS::Serverless::Function # More info about Function Resource: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction
    Properties:
      CodeUri: src/
      Handler: app.lambdaHandler
      Runtime: nodejs16.x
      Architectures:
        - x86_64
      Tracing: Active
      # Available policies:
      # https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-policy-template-list.html
      Policies:
        - AWSXrayWriteOnlyAccess
        - DynamoDBWritePolicy:
            TableName: !Ref ProcessedRecordsTable
        - KinesisStreamReadPolicy:
            StreamName: !Ref RecordsStream
      Environment:
        Variables:
          PROCESSED_RECORDS_TABLE_NAME: !Ref ProcessedRecordsTable
      Events:
        KinesisRecords:
          Type: Kinesis # More info about API Event Source: https://github.com/aws/serverless-application-model/blob/master/versions/2016-10-31.md#kinesis
          Properties:
            Stream: !GetAtt RecordsStream.Arn
            BatchSize: 20
            StartingPosition: LATEST
    Metadata: # Manage esbuild properties
      BuildMethod: esbuild
      BuildProperties:
        Minify: true
        Target: "es2020"
        # Sourcemap: true # Enabling source maps will create the required NODE_OPTIONS environment variables on your lambda function during sam build
        EntryPoints:
        - app.ts

  RecordProcessingTestResultsTable:
    Type: AWS::DynamoDB::Table
    Condition: CreateTestResources
    Properties:
      AttributeDefinitions:
        - AttributeName: PK
          AttributeType: S
        - AttributeName: SK
          AttributeType: S
      KeySchema:
        - AttributeName: PK
          KeyType: HASH
        - AttributeName: SK
          KeyType: RANGE
      BillingMode: PAY_PER_REQUEST

  ProcessedRecordsTableListener:
    Type: AWS::Serverless::Function
    Condition: CreateTestResources
    Properties:
      CodeUri: src/tests/integration/
      Handler: appTest.lambdaHandler
      Runtime: nodejs16.x
      Policies:
        - DynamoDBWritePolicy:
            TableName: !Ref RecordProcessingTestResultsTable
      Environment:
        Variables:
          TEST_RESULTS_TABLE_NAME: !Ref RecordProcessingTestResultsTable
      Events:
        ProcessedRecordsTableEvent:
          Type: DynamoDB
          Properties:
            Stream:
              !GetAtt ProcessedRecordsTable.StreamArn
            StartingPosition: TRIM_HORIZON
            BatchSize: 20
            Enabled: true
    Metadata: # Manage esbuild properties
      BuildMethod: esbuild
      BuildProperties:
        Minify: true
        Target: "es2020"
        # Sourcemap: true # Enabling source maps will create the required NODE_OPTIONS environment variables on your lambda function during sam build
        EntryPoints:
        - appTest.ts

Outputs:

  RecordsStreamArn:
    Description: "Kinesis stream accepts records for processing"
    Value: !GetAtt RecordsStream.Arn

  RecordProcessorFunctionArn:
    Description: "Kinesis records processor Lambda Function ARN"
    Value: !GetAtt RecordProcessorFunction.Arn

  ProcessedRecordsTableName:
    Description: "Processed Records DynamoDB table name"
    Value: !Ref ProcessedRecordsTable

  RecordProcessingTestResultsTableName:
    Condition: CreateTestResources
    Description: "Test results table allows monitoring of processed test records"
    Value: !Ref RecordProcessingTestResultsTable