serverless.yml

service: twilio-webhook-muxer

provider:
  name: aws
  runtime: python3.7

  # The default stage is the "local" stage; CI can deploy other stages (dev and prod)
  stage: local

  # We use us-west-2 as our AWS region
  region: us-west-2

  # 30-second timeout by default
  timeout: 30

  # Tags that will be added to each of the deployment resources
  tags:
      env: ${self:custom.stage}

  # Environment variables
  environment:
    # Sentry integration: sends Lambda errors to Sentry. Remove this if you don't want to
    # use Sentry
    SENTRY_DSN: ${ssm:twilio-webhook-muxer.common.sentry_dsn~true}
    SENTRY_ENVIRONMENT: ${self:custom.stage}

    # Your Twilio credentials, used to verify the Twilio signature and re-sign
    # the payload
    TWILIO_SID: ${ssm:twilio-webhook-muxer.common.twilio_sid~true}
    TWILIO_AUTH_TOKEN: ${ssm:twilio-webhook-muxer.common.twilio_auth_token~true}

    # This is the URL this webhook handler is deployed at. We need this to
    # verify the Twilio webhook signature. If you're using a custom domain,
    # you shouldn't need to change this, but if you've deleted the
    # custom domain configuration below you'll need to set this to your
    # API Gateway-provided domain name.
    TWILIO_CALLBACK_URL: https://${self:custom.customDomain.domainName}/muxer

    # The list of downstream targets to forward the webhooks to. Configure this
    # in the `custom` section below.
    #
    # If you are deploying without Serverless and setting this env var manually,
    # this must be a base64-encoded JSON blob (we base64-encode because on
    # Lambda, env vars can't contain commas)
    DOWNSTREAM_CONFIG: ${self:custom.downstreamConfig.${self:custom.stage}}

  # Memory allocated to each lambda function
  memorySize: 256

package:
  exclude:
    - 'node_modules/**'
    - '.vscode/**'
    - '.mypy_cache/**'
    - 'package.json'
    - 'yarn.lock'



plugins:
  # This plugin installs our python dependencies, using docker to properly compile
  # them for Lambda
  - serverless-python-requirements

  # Clean up old versions so we don't exceed our code storage quota
  - serverless-prune-plugin

  # Datadog integration: remove this if you don't use datadog
  - serverless-plugin-datadog

  # Custom domains: remove this to use an API Gateway-provided domain instead
  - serverless-domain-manager

  # This takes the DOWNSTREAM_CONFIG env var above, serializes it as JSON,
  # and then base64-encodes it. This is required because Lambda environment
  # variables must be strings and cannot contain ",".
  - serverless-plugin-encode-env-var-objects

custom:
  # The downstream URLs to sent to. Different per-environment. See the README
  # for the schema.
  downstreamConfig:
    local:
      default:
        downstreams: ["https://fuzzy-va.ngrok.io/other", "https://fuzzy-va.ngrok.io/post"]
        responder: 1
      keywords:
        STOP:
          downstreams: ["https://fuzzy-va.ngrok.io/stop"]
          responder: null
          alternates:
            - stip
        HELP:
          downstreams: ["https://fuzzy-va.ngrok.io/help"]
          responder: 0
    staging:
      default:
        downstreams:
          - https://helpline-staging.voteamerica.io/twilio-pull
          - https://api-staging.voteamerica.com/v1/smsbot/twilio/
        responder: 0
      keywords:
        STOP:
          downstreams:
            - https://helpline-staging.voteamerica.io/twilio-pull
            - https://api-staging.voteamerica.com/v1/smsbot/twilio/
            - https://actionnetwork.org/groups/inbound_messages?group_id=160798
          responder: null
          alternates:
            - stip
        HELP:
          downstreams:
            - https://api-staging.voteamerica.com/v1/smsbot/twilio/
          responder: 0
        JOIN:
          downstreams:
            - https://api-staging.voteamerica.com/v1/smsbot/twilio/
          responder: 0
    prod:
      default:
        downstreams:
          - https://helpline-prod.voteamerica.io/twilio-pull
          - https://api.voteamerica.com/v1/smsbot/twilio/
        responder: 0
      keywords:
        STOP:
          downstreams:
            - https://helpline-prod.voteamerica.io/twilio-pull
            - https://api.voteamerica.com/v1/smsbot/twilio/
            - https://actionnetwork.org/groups/inbound_messages?group_id=158487
          responder: 1
          alternates:
            - stip
            - srop
            - stop text
            - stop texting
            - stop texting please
            - stop texting me
            - stop texting me please
            - stop all
            - please stop
            - please stop texting
            - please stop texting me
            - stop please
            - stop now
            - stop ✋
            - 🛑
            - stop 🛑
            - remove
            - unsubscribe
            - fucking stop
            - fuck off
            - screw off
            - leave me alone
            - leave me the fuck alone
        HELP:
          downstreams:
            - https://api.voteamerica.com/v1/smsbot/twilio/
          responder: 0
        JOIN:
          downstreams:
            - https://api.voteamerica.com/v1/smsbot/twilio/
          responder: 0

  # The custom domain name to use for the muxer. You can remove this and
  # the serverless-domain-manager plugin to use an API Gateway-provided domain
  # instead.
  customDomain:
    domainName: twilio-muxer-${self:custom.stage}.voteamerica.io

  # Specify how to build our python dependencies, and which ones are
  # already available in Lambda and don't need to be bundled with the
  # application
  pythonRequirements:
    dockerizePip: true
    noDeploy: [
      'boto3',
      'botocore',
      'docutils',
      'jmespath',
      'python-dateutil',
      's3transfer',
      'six',
      'pip',
      'setuptools'
    ]

  # Make stage/region accessible to other parts of the config
  stage: ${opt:stage, self:provider.stage}
  region: ${opt:region, self:provider.region}

  # Configure DataDog integration. If you've removed serverless-plugin-datadog
  # above, you can remove this. flushMetricsToLogs requires that you have
  # the datadog forwarder installed; see
  # https://github.com/DataDog/datadog-serverless-functions/tree/master/aws/logs_monitoring#installation
  # for details.
  datadog:
    flushMetricsToLogs: true

  # Automatically remove old function versions to avoid filling up your lambda code storage
  # quota.
  prune:
    automatic: true
    number: 3


functions:
  muxer:
    handler: app.muxer.handler
    events:
    - http:
        method: POST
        integration: lambda-proxy
        path: /muxer