Integrating AWS SAM with OpenAPI

template.yaml

AWSTemplateFormatVersion : "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: Conference API Service

Globals:
  Api:
    Cors:
      AllowMethods: "'*'"
      AllowHeaders: "'Content-Type'"
      AllowOrigin: "'*'"

Outputs:
  ProdDataEndpoint:
    Description: "API dev stage endpoint"
    Value: !Sub "https://${ConferenceApiGateway}.execute-api.eu-west-1.amazonaws.com/dev/"

Resources:
  ConferenceApiGateway:
    Type: AWS::Serverless::Api
    Properties:
      StageName: dev
      DefinitionBody:
        Fn::Transform:
          Name: AWS::Include
          Parameters:
            Location: ./redoc/spec/openapi.yaml
      TracingEnabled: true
  CreateSessionFunction:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: conference-create-session-lambda
      Runtime: java8
      Handler: be.ordina.conference.lambda.CreateSessionLambda::handleRequest
      CodeUri: ./conference-create-session-lambda/target/conference-create-session-lambda-1.0.0-SNAPSHOT.jar
      Timeout: 30
      MemorySize: 1024
      Tracing: Active
      Events:
        CreateSessionApi:
          Type: Api
          Properties:
            RestApiId: !Ref "ConferenceApiGateway"
            Path: /sessions
            Method: POST
      Policies:
        - AWSLambdaBasicExecutionRole
        - AWSXrayWriteOnlyAccess
        - Version: '2012-10-17'
          Statement:
            - Effect: Allow
              Action:
                - 'dynamodb:PutItem'
                - 'dynamodb:UpdateItem'
              Resource:
                'Fn::Join':
                  - ''
                  - - 'arn:aws:dynamodb:'
                    - Ref: 'AWS::Region'
                    - ':'
                    - Ref: 'AWS::AccountId'
                    - ':table/'
                    - Ref: SessionsDynamoDBTable
  GetAllSessionsFunction:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: conference-get-all-sessions-lambda
      Runtime: java8
      Handler: be.ordina.conference.lambda.GetLambda::handleRequest
      CodeUri: ./conference-get-all-sessions-lambda/target/conference-get-all-sessions-lambda-1.0.0-SNAPSHOT.jar
      Tracing: Active
      Timeout: 30
      MemorySize: 1024
      Events:
        GetAllSessionsApi:
          Type: Api
          Properties:
            RestApiId: !Ref "ConferenceApiGateway"
            Path: /sessions
            Method: GET
      Policies:
        - AWSLambdaBasicExecutionRole
        - AWSXrayWriteOnlyAccess
        - DynamoDBReadPolicy:
            TableName:
              Ref: SessionsDynamoDBTable
  SessionsDynamoDBTable:
    Type: AWS::DynamoDB::Table
    Properties:
      TableName: sessions
      AttributeDefinitions:
        - AttributeName: uuid
          AttributeType: S
      KeySchema:
        - AttributeName: uuid
          KeyType: HASH
      ProvisionedThroughput:
        ReadCapacityUnits: 5
        WriteCapacityUnits: 5