AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  crud-microservice
  SAM Template for java crud-microservice

Parameters:
  LogLevel:
    Type: String
    Default: INFO
  RetentionInDays:
    Type: Number
    Default: 14
    Description: CloudWatch Logs retention period for Lambda functions
  PageSize:
    Type: Number
    Default: 2
    Description: Number of items retrieved in the database

Globals:
  Function:
    Timeout: 300
    Tracing: Active
    Runtime: java11
    MemorySize: 512
    CodeUri: functions/TodoFunctions
    Environment:
      Variables:
        TABLE_NAME: !Ref TodosTable
        POWERTOOLS_LOG_LEVEL: !Ref LogLevel
        POWERTOOLS_METRICS_NAMESPACE: todos

Resources:
  TodosTable:
    Type: AWS::DynamoDB::Table
    Properties:
      BillingMode: PAY_PER_REQUEST
      AttributeDefinitions:
        - AttributeName: "id"
          AttributeType: "S"
      KeySchema:
        - AttributeName: "id"
          KeyType: "HASH"

  ListTodosFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: com.amazonaws.todo_crud_microservice.todo.ListTodosFunction::handleRequest
      Environment:
        Variables:
          PAGE_SIZE: !Ref PageSize
          POWERTOOLS_SERVICE_NAME: list_todo
      Events:
        ReadTodo:
          Type: Api
          Properties:
            Path: /todos
            Method: GET
            RestApiId: !Ref Api
      Policies:
        - DynamoDBReadPolicy:
            TableName: !Ref TodosTable

  ListTodosLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub "/aws/lambda/${ListTodosFunction}"
      RetentionInDays: !Ref RetentionInDays

  CreateTodoFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: com.amazonaws.todo_crud_microservice.todo.CreateTodoFunction::handleRequest
      Environment:
        Variables:
          POWERTOOLS_SERVICE_NAME: create_todo
      Events:
        CreateTodo:
          Type: Api
          Properties:
            Path: /todos
            Method: POST
            RestApiId: !Ref Api
      Policies:
        - DynamoDBWritePolicy:
            TableName: !Ref TodosTable

  CreateTodoLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub "/aws/lambda/${CreateTodoFunction}"
      RetentionInDays: !Ref RetentionInDays

  ReadTodoFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: com.amazonaws.todo_crud_microservice.todo.ReadTodoFunction::handleRequest
      Environment:
        Variables:
          POWERTOOLS_SERVICE_NAME: read_todo
      Events:
        ReadTodo:
          Type: Api
          Properties:
            Path: /todos/{id}
            Method: GET
            RestApiId: !Ref Api
      Policies:
        - DynamoDBReadPolicy:
            TableName: !Ref TodosTable

  ReadTodoLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub "/aws/lambda/${ReadTodoFunction}"
      RetentionInDays: !Ref RetentionInDays

  UpdateTodoFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: com.amazonaws.todo_crud_microservice.todo.UpdateTodoFunction::handleRequest
      Environment:
        Variables:
          POWERTOOLS_SERVICE_NAME: update_todo
      Events:
        CreateTodo:
          Type: Api
          Properties:
            Path: /todos/{id}
            Method: PUT
            RestApiId: !Ref Api
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref TodosTable

  UpdateTodoLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub "/aws/lambda/${UpdateTodoFunction}"
      RetentionInDays: !Ref RetentionInDays

  DeleteTodoFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: com.amazonaws.todo_crud_microservice.todo.DeleteTodoFunction::handleRequest
      Environment:
        Variables:
          POWERTOOLS_SERVICE_NAME: delete_todo
      Events:
        CreateTodo:
          Type: Api
          Properties:
            Path: /todos/{id}
            Method: DELETE
            RestApiId: !Ref Api
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref TodosTable

  DeleteTodoLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub "/aws/lambda/${DeleteTodoFunction}"
      RetentionInDays: !Ref RetentionInDays

  Api:
    Type: AWS::Serverless::Api
    Properties:
      EndpointConfiguration: REGIONAL
      StageName: prod
      TracingEnabled: true

# To deploy on AWS SAR (Serverless Application Repository)
# sam package --template-file template.yaml --output-template-file packaged.yaml --s3-bucket <bucketname>
# sam publish --template packaged.yaml --region <region>
# aws serverlessrepo put-application-policy --application-id arn:aws:serverlessrepo:<region>:<accountid>:applications/serverless-java-crud-microservice --statements Principals=*,PrincipalOrgIDs=<o-yourorgid>,Actions=Deploy
Metadata:
  AWS::ServerlessRepo::Application:
    Name: serverless-java-crud-microservice
    Description: Simple CRUD microservice, using API GW, Lambda and DynamoDB
    Author: Jerome Van Der Linden
    SpdxLicenseId: MIT
    LicenseUrl: LICENSE
    ReadmeUrl: README.md
    Labels: ['microservice', 'crud', 'java']
    HomePageUrl: https://github.com/aws-samples/serverless-java-crud-microservice
    SemanticVersion: 1.0.0
    SourceCodeUrl: https://github.com/aws-samples/jserverless-ava-crud-microservice/sources

Outputs:
  TodosTable:
    Description: "Todos DynamoDB table"
    Value: !Ref TodosTable
  TodosApi:
    Description: "API Gateway endpoint URL for Prod stage for Todos API"
    Value: !Sub "https://${Api}.execute-api.${AWS::Region}.amazonaws.com/prod/todos/"
  CreateTodoFunction:
    Description: "CreateTodo Function ARN"
    Value: !GetAtt CreateTodoFunction.Arn
  ReadTodoFunction:
    Description: "ReadTodo Function ARN"
    Value: !GetAtt ReadTodoFunction.Arn
  UpdateTodoFunction:
    Description: "UpdateTodo Function ARN"
    Value: !GetAtt UpdateTodoFunction.Arn
  DeleteTodoFunction:
    Description: "DeleteTodo Function ARN"
    Value: !GetAtt DeleteTodoFunction.Arn
  ListTodoFunction:
    Description: "ListTodo Function ARN"
    Value: !GetAtt ListTodosFunction.Arn