TC - Chronos

Welcome to TC - Chronos. This is a microservice that takes on all the webhook work from TC. Before creation of Chronos, about 50% of the database was taken up by webhook logs & failed deliveries are causing some slowness in jobs etc. To battle this we will simply send 1 request from TC2 to Chronos per webhook then let chronos manage the rest.

Functionality

This means the Chronos needs some certain functionality:

• An object for storing endpoints where our clients wish webhooks to be sent to

• An object for storing information about the webhook logs

• An endpoint for CRUD operations on the Endpoint objects

• An endpoint for retrieving webhook logs to be displayed in TC2

• An endpoint for distributing webhooks to all Endpoints related to a branch

• A job that runs periodically deleting all logs older than 15 days

SetUp Local

To set up the Chronos system locally follow these steps:

1. Create a virtual environment
2. Install the requirements by running make install-dev
3. Create a .env file in the root of the project with the following content:

Set pg_dsn and test_pg_dsn You will need to export dev_mode = True to create tables

4. Create the DB in Postgres by calling make reset-db
5. Start the server using make run-server-dev
6. Start the celery worker with make run-worker

SetUp a new live system

To set up the Chronos system in render follow these steps:

1. Create a render project with the following services:
   • A Postgres database
   • A Redis database
   • A web service
   • A worker service
2. Setup web service:
   • Set to build from this repo and deploy from master branch
   • Set make install as the build command
   • Set make run-server as the start command
3. Setup worker service:
   • Set to build from this repo and deploy from master branch
   • Set make install as the build command
   • Set make run-worker as the start command
4. Setup a Postgres instance
5. Setup a Redis instance
6. Return to environment variables on web service and set the following:
   • HOST
   • PORT
   • logfire_token
   • tc2_shared_key
7. Setup shared environment variables from internally created postgres and redis instance
   • pg_dsn
   • redis_url