amongo

- trigger migrations among aws and mongodb

This cli package was created to help CI/CD pipelines, keeping in sync mongodb trigger declarations with mongodb platform and reflecting it on aws event-bridge partners section.

# mongodb trigger declarations

This cli abstract most of mongodb trigger configurations, requiring only what you realy need to know about your trigger, also it applies aws event-bridge connection by default to make the integration easier.

You can find all you need to know about mongodb database-triggers on official documentation:

database triggers doc

migration_schema.json

[
    {
        "name": "EVENT_ON_INSERT_USER",
        "operation_types": ["INSERT"],
        "collection": "users"
    },{
        "name": "EVENT_ON_INSERT_ORDER",
        "collection": "orders",
        "operation_types": ["INSERT"],
        "match": { "fullDocument.status": "PENDING" },
        "project": { "fullDocument": 1 },
        "disabled": false,
        "unordered": true,
        "full_document": true,
        "full_document_before_change": false,
        "skip_catchup_events": false,
        "tolerate_resume_errors": false
    }
]

# amongo command cli

# collecting environment variables

• AWS_REGION = The aws region where you want to register yours event bridges.
• AWS_ACCOUNT_ID = Your AWS Account ID.
• MONGODB_GROUP_ID = Can be founded on URL of your mongodb dashboard After select an organization project.
• MONGODB_APP_ID = Can be founded on URL of your mongodb dashboard when you access your application on AppServices
• MONGODB_API_KEY = Can be created on your organizanization section at Access Manager section (The permission must to be Organization Owner, pay attention at this part if you get error 403 after authentication!!!)
• MONGODB_API_SECRET = Auto generated when you create your API KEY on your organizanization section at Access Manager section.
• MONGODB_CLUSTER_NAME = The cluster name where your database was created.
• MONGODB_DATABASE = The name of yor database.

# calling amongo coomand

cicd_script.sh

amongo 
--aws_region=${AWS_DEFAULT_REGION}
--aws_account_id=${AWS_ACCOUNT_ID}
--mongodb_group_id=${MONGODB_GROUP_ID}
--mongodb_app_id=${MONGODB_APP_ID}
--mongodb_api_key=${MONGODB_API_KEY}
--mongodb_api_secret=${MONGODB_API_SECRET}
--mongodb_cluster_name=${MONGODB_CLUSTER_NAME}
--mongodb_database=${MONGODB_DATABASE}
--schema=migration_schema.json

After run amongo command cli all database trigger events will be available with Pending status on https://<your-region>.console.aws.amazon.com/events/home?region=<your-region>#/partners and ready to be associated to an event-bus ARN.

PS: for development, you can run the run.sh shell file at this project to test in dev mode ASAP. * Dont forget to setting up your credentials on environment variables.

# serverless

After amongo command runs, it exports the trigger names as environment variables with it respective values (aws partner event source name) and store it on the .env files, where it can be used to continue the CI/CD pipeline being imported by serverless.yml and used to trigger lambda functions.

serverless.yml

service: amongo-example
useDotenv: true

plugins:
  - serverless-dotenv-plugin
  
provider:
  name: aws
  stage: ${opt:stage, 'develop'}
  environment:
    EVENT_ON_INSERT_ORDER: ${env:EVENT_ON_INSERT_ORDER}

functions:
  send-order-email:
    name: send-order-email-${self:provider.stage}
    handler: functions/send-order-email.handle
    description: "Send order e-mail when it is created on database"
    memorySize: 512
    runtime: nodejs16.x
    timeout: 300
    events:
      - eventBridge:
          enabled: true
          eventBus: !GetAtt MongoDbOnInserOrderEventBus.Name
          pattern:
            source:
              - prefix: aws.partner/mongodb.com

resources:
  Resources:
    MongoDbOnInserOrderEventBus:
      Type: "AWS::Events::EventBus"
      Properties:
        EventSourceName: ${self:provider.environment.EVENT_ON_INSERT_ORDER}
        Name: ${self:provider.environment.EVENT_ON_INSERT_ORDER}