serverless.yml

service: serverless-go

# frameworkVersion: '>=1.28.0 <2.0.0'

provider:
  name: aws
  runtime: go1.x
  stage: ${opt:stage, 'dev'}
  timeout: 10
  memorySize: 256
  versionFunctions: false

  tags:
    GLOBAL-TAG1: foo
    GLOBAL-TAG2: bar

  # Permissions for all of your functions can be set here
  iamRoleStatements:

  # Gives permission to DynamoDB tables in a specific region
  - Effect: Allow
    Action:
      - dynamodb:DescribeTable
      - dynamodb:Query
      - dynamodb:Scan
      - dynamodb:GetItem
      - dynamodb:PutItem
      - dynamodb:UpdateItem
      - dynamodb:DeleteItem
    Resource: "arn:aws:dynamodb:*:*:*"

  # Gives permission to SQS
  - Effect: Allow
    Action:
      - sqs:GetQueueUrl
      - sqs:DeleteMessage
      - sqs:ReceiveMessage
      - sqs:SendMessage
    Resource: arn:aws:sqs:*:*:*

  environment:
    ${file(./configs/${self:provider.stage}.yml)}

custom:
  stage:  ${opt:stage, self:provider.stage}
  prefix: ${self:custom.stage}-${self:service}
  dynamo-books-name: ${self:custom.prefix}-books-catalog
  sqs-books-name: ${self:custom.prefix}-processing-queue

functions:
  create:
    handler: bin/books/endpoints/create
    events:
      - http:
          path: books
          method: post
    tags:
      TAGFUNCTION: Tag Value

  read:
    handler: bin/books/endpoints/read
    events:
      - http:
          path: books
          method: get

  read_detail:
    handler: bin/books/endpoints/detail
    events:
      - http:
          path: books/{hashkey}
          method: get

  update:
    handler: bin/books/endpoints/update
    events:
      - http:
          path: books/{hashkey}
          method: put

  delete:
    handler: bin/books/endpoints/delete
    events:
      - http:
          path: books/{hashkey}
          method: delete

  worker:
    handler: bin/books/functions/worker
    events:
      - sqs:
          arn:
            Fn::GetAtt:
              - BooksQueueExample
              - Arn
          batchSize: 10


# CloudFormation template syntax
resources:
  Resources:
    #DynamoDB Books Table
    BooksCatalog:
      Type: AWS::DynamoDB::Table
      Properties:
        TableName: ${self:custom.dynamo-books-name}
        AttributeDefinitions:
          - AttributeName: hashkey
            AttributeType: S
        KeySchema:
          - AttributeName: hashkey
            KeyType: HASH
        ProvisionedThroughput:
          ReadCapacityUnits:  10
          WriteCapacityUnits: 10

    # SQS Queue to Update DynamoDB
    BooksQueueExample:
      Type: AWS::SQS::Queue
      Properties:
        QueueName: ${self:custom.sqs-books-name}
        MessageRetentionPeriod: 1209600
        VisibilityTimeout: 120