Migrating Kabuter.io from monolith to AWS server-less micro-services architecture

High-level migration plan:

1. Re-develop kabuter UI using Angular 8 and Amplify

   Created an kabuter.io angular 8 project by referring Michael Labieniec’s blog on Progressive Web Application

Follow amazon multi-environments doc for setting up prod, test and dev environments.

1. Use AWS Cognito for user-management and social federation (facebook and google)

   Implemented social federation using AWS Cognito by referring Michael Labieniec’s blog on PWA Social Federation

   Note: I had to use Cognito – implicit grant option to eliminate token url resulting in invalid_request error that prevented social federated users to get navigated to home page after successful login. Refer AWS Token link for more.

2. Use AWS DynamoDB as a backend no-sql database

   Created a DynamoDB table named kabuterio with partition-key=pk, sort-key=sk.
   Implemented a python lambda invoked by AWS Cognito pre-Sign-up trigger to write user info to kabuterio table.

3. MILESTONE #1 Use AWS Cognito to trigger a Python lambda to save pre sign-up user info in the kabuterio DynamoDB database.

   Created user-add, user-get python lambda functions to write to kabuterio table.

   Note: Make sure to return event from lambda functions so that Cognito can return back to the caller webapp.

4. Use Swagger to define REST API

5. MILESTONE #2: Upon successful sign-up and authentication, allow users to update profile/preference info.

6. Use AWS CodeCommit

   Created a repository “KabuterAngularApp” in AWSCodeCommit.
   Pointed the local directory of angular app to remote AWS repository using the command below:

   git remote add  
   

   Validate the remote url:

   git remote -v

   Pushed local code to remote using:

   git push  

   For more info refer Linuxize blog How to add git remote

7. Import Swagger definition into SOAP UI to run API tests

8. MILESTONE #3: Implement code-change to code-deployment cycle using AWS Bamboo

9. Implement Group, Event, and Message CRUD UI and REST functionality

10. MILESTONE #4: Kabuter.io is up and running on AWS platform and users are able to create groups, events and messages.

11. Implement workflow using AWS State Machine.

12. MILESTONE #5: Kabuter.io is able to send email and SMS notifications

13. Update ios and android apps

14. MILESTONE #6: Kabuter.io is fully functional on AWS. 

References

A blog by Mark McDonell on AWS Cognito