serverless.yml

service:
  name: realtime-ww2

frameworkVersion: ">=1.22.0"

plugins:
  - serverless-webpack
  - serverless-plugin-aws-alerts

provider:
  name: aws
  runtime: nodejs6.10
  memorySize: 1024
  timeout: 10
  region: eu-west-1
  iamRoleStatements:
    - Effect: "Allow"
      Action:
        - "s3:ListBucket"
        - "s3:PutObject"
        - "s3:GetObject"
      Resource:
        Fn::Join:
          - ""
          - - "arn:aws:s3:::"
            - Ref: S3TweetCache
            - /*
    - Effect: "Allow"
      Action: 
        - "ssm:GetParameters"
      Resource:
        - Fn::Join:
          - ""
          - - "arn:aws:ssm:*:*:parameter/"
            - ${self:service}
            - /*

package:
  individually: true

custom:
  stage: ${opt:stage, self:provider.stage}
  prod:
    twitterRestBaseUrl: https://api.twitter.com/1.1
    cacheTweetsSchedule: rate(1 hour)
    alexaSkillId: amzn1.ask.skill.8955b37b-4975-4462-a4d9-4aba0ad647f0
  dev:
    twitterRestBaseUrl: { "Fn::Join" : ["", [ "https://", { "Ref" : "ApiGatewayRestApi" }, ".execute-api.${self:provider.region}.amazonaws.com/${self:custom.stage}" ] ]  }
    cacheTweetsSchedule: cron(0 0 * * ? 1970)
    alexaSkillId: amzn1.ask.skill.e24708e2-28ff-4d4a-a2c5-40cf44c25ed2
  cryptKeyId: c7ce8560-aaf1-4780-be8c-b048a0a749f2
  tweetCacheBucketName: ${self:service}-${self:custom.stage}-tweet
  alertEmailEndpoint: ${ssm:/${self:service}/email-endpoint}
  alerts:
    dashboards: true
    topics:
      alarm:
        topic: ${self:service}-${self:custom.stage}-alerts-alarm
        notifications:
          - protocol: email
            endpoint: ${self:custom.alertEmailEndpoint}
      ok:
        topic: ${self:service}-${self:custom.stage}-alerts-ok
        notifications:
          - protocol: email
            endpoint: ${self:custom.alertEmailEndpoint}
    definitions:
      functionErrors:
        treatMissingData: ignore
      bunyanErrors:
        namespace: ${self:service}-${self:custom.stage}
        metric: bunyanErrors
        threshold: 0
        statistic: Sum
        period: 60
        evaluationPeriods: 1
        comparisonOperator: GreaterThanThreshold
        pattern: '{$.level > 40}'
        treatMissingData: ignore

functions:
  alexa-skill:
    handler: packages/core/src/alexa-skill.handler
    events:
      - alexaSkill
    environment:
      TWEET_CACHE_BUCKET_NAME: ${self:custom.tweetCacheBucketName}
      ALEXA_SKILL_ID: ${self:custom.${self:custom.stage}.alexaSkillId}
      CLOCK: NOW
    alarms:
      - bunyanErrors
  cache-tweets:
    handler: packages/core/src/cache-tweets.handler
    events:
      - schedule: ${self:custom.${self:custom.stage}.cacheTweetsSchedule}
    environment:
      TWEET_CACHE_BUCKET_NAME: ${self:custom.tweetCacheBucketName}
      TWITTER_SECRETS_PATH: /${self:service}/twitter
      TWITTER_REST_BASE_URL: ${self:custom.${self:custom.stage}.twitterRestBaseUrl}
      TWITTER_USER_ID: 364488011
    alarms:
      - functionErrors
  fake-twitter:
    handler: packages/fake-twitter/handler.handler
    events:
      - http: GET statuses/user_timeline.json
  
resources:
  Resources:
    S3TweetCache:
      Type: AWS::S3::Bucket
      Properties:
        BucketName: ${self:custom.tweetCacheBucketName}