severless.yml

service: aws-polling-task-scheduler

provider:
  name: aws
  runtime: nodejs4.3
  environment:
    RATE: 300
    TASK_TABLE: ${self:service}-${opt:stage, self:provider.stage}-tasks
    TOKEN_INDEX: ${self:service}-${opt:stage, self:provider.stage}-tasks-by-token
  iamRoleStatements:
    - Effect: Allow
      Action:
        - dynamodb:Query
        - dynamodb:GetItem
        - dynamodb:PutItem
        - dynamodb:UpdateItem
        - dynamodb:DeleteItem
      Resource: "arn:aws:dynamodb:${self:provider.region}:*:table/${env:TASK_TABLE}"
    - Effect: Allow
      Action:
        - dynamodb:Query
      Resource: "arn:aws:dynamodb:${self:provider.region}:*:table/${env:TASK_TABLE}/*"

functions:
  poll-scheduled:
    cljs: aws-polling-task-scheduler.handlers/poll-scheduled
    events:
      - schedule: rate(${env:RATE} seconds)
  schedule:
    cljs: aws-polling-task-scheduler.handlers/schedule
    events:
      - http:
          path: schedule
          method: post

plugins:
  - serverless-cljs-plugin

resources:
  Resources:
    TaskTable:
      Type: 'AWS::DynamoDB::Table'
      Properties:
        TableName: ${env:TASK_TABLE}
        AttributeDefinitions:
          -
            AttributeName: next
            AttributeType: N
          -
            AttributeName: token
            AttributeType: S
        KeySchema:
          -
            AttributeName: next
            KeySchema:     HASH
        ProvisionedThroughput:
          ReadCapacityUnits: 1
          WriteCapacityUnits: 1
        GlobalSecondaryIndexes:
          - IndexName: ${env:TOKEN_INDEX}
            KeySchema:
              -
                AttributeName: token
                KeySchema:     HASH
            Projection:
              ProjectionType: ALL