Resources:
  TriggerFunction:
    Type: AWS::Serverless::Function
    Properties:
      Runtime: nodejs14.x
      Handler: index.handler
      Timeout: 100
      InlineCode: |
        const AWS = require('aws-sdk');
        exports.handler = async (event) => {
          console.log(JSON.stringify(event));
          const docClient = new AWS.DynamoDB.DocumentClient();
          const response = await docClient.put({ 
            TableName: process.env.TABLE_NAME, 
            Item: {
              Id: 'TestInput1234'
            }
          }).promise();
          await new Promise(resolve => setTimeout(resolve, 10000));

          var retries = 5;
          while (retries-- > 0) {
            const data = await new AWS.SQS().receiveMessage({
              QueueUrl: process.env.VERIFICATION_QUEUE_URL,
              WaitTimeSeconds: 20,
            }).promise();
            console.log(data);
            if (data.Messages && data.Messages.length > 0) {
              return;
            }
            await new Promise(resolve => setTimeout(resolve, 10000));
          }
          throw 'No messages in the queue!';
        };
      Environment:
        Variables:
          TABLE_NAME: !Ref Table
          VERIFICATION_QUEUE_URL: !Ref VerificationQueue
      Policies:
      - SQSPollerPolicy:
          QueueName: !GetAtt VerificationQueue.QueueName

  InvokedFunction:
    Type: AWS::Serverless::Function
    Properties:
      Runtime: nodejs14.x
      Handler: index.handler
      InlineCode: |
        const AWS = require('aws-sdk');
        exports.handler = async (event) => {
          const sqs = new AWS.SQS();
          await sqs.sendMessage({
            QueueUrl: process.env.VERIFICATION_QUEUE_URL,
            MessageBody: "test"
          }).promise();
        };
      Environment:
        Variables:
          VERIFICATION_QUEUE_URL: !Ref VerificationQueue
      Policies:
      - SQSSendMessagePolicy:
          QueueName: !GetAtt VerificationQueue.QueueName

  VerificationQueue:
    Type: AWS::SQS::Queue

  Table:
    Type: AWS::DynamoDB::Table
    Properties:
      BillingMode: PAY_PER_REQUEST
      AttributeDefinitions:
      - AttributeName: Id
        AttributeType: S
      KeySchema:
      - AttributeName: Id
        KeyType: HASH
      StreamSpecification:
        StreamViewType: NEW_AND_OLD_IMAGES

  DynamoDBTableStream:
    Type: AWS::Lambda::EventSourceMapping
    Properties:
      Enabled: true
      EventSourceArn: !GetAtt Table.StreamArn
      FunctionName: !GetAtt InvokedFunction.Arn
      StartingPosition: TRIM_HORIZON

  Connector:
    Type: AWS::Serverless::Connector
    Properties:
      Source:
        Id: Table
      Destination:
        Id: InvokedFunction
      Permissions:
      - Read

  ConnectorNotTested:
    Type: AWS::Serverless::Connector
    Properties:
      Source:
        Id: TriggerFunction
      Destination:
        Id: Table
      Permissions:
      - Write
Metadata:
  SamTransformTest: true