UPchieve/subway

Web app for UPchieve. https://gitlab.com/upchieve/subway for active development.

UPchieve API Server and Worker

Web app providing api endpoints and serving a SPA frontend.

Contributing Guide

GITLAB

NOTE: Active development on this project has moved to https://gitlab.com/upchieve/subway, no more pushes should go straight to the Github repo.

IMPORTANT: THE FRONTEND IS IN A SEPARATE REPOSITORY

This repository is the backend API server and queue worker only. To work on the frontend, you also need to follow the readme for the frontend repo.

Table of Contents

• UPchieve API Server and Worker
  • GITLAB
  • Local Development
    • Local Dependencies
    • App Dependencies
    • Prepare to run the server
    • Run the app
    • Database updates
      • Important files
      • Package.json Scripts
      • Migrations
  • Test Users
  • Structure
  • Server
    • Config
    • Models
    • Router
    • Services
  • Endpoints
  • Worker
    • Worker Jobs
  • Component Library
    • Testing
      • Known issue with visually testing SVG components:

Local Development

Local Dependencies

The recommended tool for runtime version management is nvm. To use nvm on Windows, first install the appropriate Linux shell distribution using WSL (Windows Subsystem for Linux). We currently run on Node v20.10.0, you can switch to this using

$ nvm install v20.10.0 && nvm use v20.10.0

After switching npm versions using nvm, you will need to run $ npm install. Next install Docker and start according to their instructions for your operating system.

App Dependencies

On Linux systems you may need to install docker-compose manually; on Windows and MacOS it ships with base docker. A docker-compose yaml specifies how to spin up Mongo, Redis, PostgreSQL, and PGAdmin containers to support the server, and also seeds the PostgreSQL database with test data.

1. Run the following command to start the containers

$ docker-compose --profile dev up -d

2. Confirm PostgreSQL is running and the database is properly seeded by making a query in a DB admin tool
   • connect via $ psql --host 127.0.0.1 --port 5432 --username admin --dbname upchieve and password Password123 OR
   • use PGAdmin at http://localhost:80 with username admin@upchieve.org and password Password123

When you want to stop and remove the containers, run:

$ docker-compose --profile dev down

Prepare to run the server

The below steps are tested on a Macintosh.

1. Confirm the database container dependencies above are running with docker ps
2. Custom properties are currently required for the server to connect data sources on a desktop computer, so run or add to your profile the below commands:

export SUBWAY_REDIS_HOST=localhost
export SUBWAY_DB_HOST=localhost

3. (optional) If you want to test Twilio voice calling functionality, set the host property to [your public IP address]:3000 (minus the brackets), and configure your router/firewall to allow connections to port 3000 from the Internet. Twilio will need to connect to your system to obtain TwiML instructions.
4. (optional) Run npm run dev:worker to start the worker process. The dev worker will automatically attempt to connect to your local Redis instance and read jobs from there. Additionally, you can run npm run add-cron-jobs to add all repeatable jobs to the job queue.

Run the app

IMPORTANT: THE FRONTEND IS IN A SEPARATE REPOSITORY

This repository is the backend API server and queue worker only. To work on the frontend, you also need to follow the readme for the frontend repo.

Once you have the dependencies running and installed, you can run the following

$ npm run dev:backend

to start the dev server and a watch for changes to the server code. Once you also have the frontend running you can visit http://localhost:8080 and you're good to go!

Database updates

If you change anything in the .sql files in server/models, run npm run pgtyped to pick up the changes and regenerate the associated .ts files. This generates typescript versions of the queries that can be referenced in code, as well as entity types.

Important files

All database administration files live in /database. The db_init directory houses files used to bring up a fresh database for local dev or staging. To bring up a fresh database run:

1. schema.sql to create the UPchieve schema
2. auth.sql to create relevant app roles and grant them permission over the schema
3. test_seeds.sql to fill the db with static seeds and test data for local development
4. seed_migrations.sql to populate the public.seed_migrations table so we know how to apply future seed migrations

Package.json Scripts

1. db:reset: resets the local postgres container's pchieve database to an empty state
2. db:schema: applies db_init/schema.sql to the local db
3. db:auth: applies db_init/auth.sql to the local tb
4. db:seeds: applies db_init/test_seeds.sql to the local db
5. db:reset-schema: runs 1-3 above
6. db:reset-seeds: runs 1-4 above; equivalent to restarting the docker container
7. db:build-seeds: runs 1-3, builds static seeds from seeds/static, and applies all seed migrations
8. db:dump: dumps contents of local db to schema.sql, test_seeds.sql, and seed_migrations.sql
9. db:schema-new: creates a new blank schema migration (same as dbmate new)
10. db:seeds-new: creates a new blank seed migration (same as dbmate new)
11. db:schema-up: applies any pending schema migrations without writing out the new schema
12. db:schema-down: rollsback the most recent applied schema migration without writing out the new schema
13. db:seeds-up applies any pending seed migrations

Migrations

When writing a schema migration include both rollout and rollback instructions - for example:

-- migrate:up
ALTER TABLE upchieve.schools
  ADD COLUMN legacy_city_name text;

-- migrate:down
ALTER TABLE upchieve.schools
  DROP COLUMN legacy_city_name;

Test that the rollback script actually works by running npm run db:schema-down. Note that a seeds-down script does not exist because writing reversible seed migrations is often mroe trouble than it's worth.

Notes:

• If the database/schema end up in an irrecoverable state, you can drop everything with npm run db:reset-seeds to get the database to a fresh state (alternatively destroy and rebuild the container)
• After verifying the migrations are good dump the schema and data for the next developer with npm run db:dump
• Everything in db_init is programmatically generated and can be ignored in diff examinations

Test Users

The database is populated with the following users for local development:

email	password	properties
student1@upchieve.org	Password123	approved school
student2@upchieve.org	Password123	partner student, approved school
student3@upchieve.org	Password123	partner student, no school
volunteer1@upchieve.org	Password123	approved, onboarded, partner volunteer
volunteer2@upchieve.org	Password123	approved, onboarded, gets special reporting
volunteer3@upchieve.org	Password123	approved, onboarded, open sign up, different time zone
volunteer4@upchieve.org	Password123	approved, not onboarded
volunteer5@upchieve.org	Password123	not approved, not onboarded
volunteer6@upchieve.org	Password123	admin

Structure

The app is split into two components, the server/worker, and the frontend Vue SPA.

Server code is found in the server directory, and SPA code in a separate repository.

Server

The server folder of the repository provides the bootstrap file main.ts and a package definitions file.

Config

config.ts contains a map of configuration keys for running the server. All keys and sensitive information should be placed in this file.

Models

Model definitions that map to database models, along with related methods to act on those models, such as parsing, validation, and data transformations. Ideally models are encapsulated in their files, and only expose methods that return interfaces of data, rather than actual Mongo Documents. We are in the process of migrating to this practice across all models.

Router

Directory structure mimics the endpoint structure exposed by the server. Each file provides one or more endpoint routes, responsible for request acceptance/rejection and error handling.

Services

Routes use services to perform the business logic of the server, providing separation of concerns: the services have no need to be aware of how the endpoints work. Instead, a controller provides ways to allow the routes to trigger something (a user update, e.g.).

Endpoints

See all current endpoints in the Swagger UI documentation

If you have the local backend dev running you can go here for a local version.

Worker

Our application runs several asynchronous jobs. These jobs are put into a queue, managed by BullMQ, that lives in a Redis instance. These jobs might be triggered programmatically, on a schedule, or manually using BullMQ's UI called TaskForce.sh.

• Job definitions live in worker/jobs
• Jobs need to be registered in the jobProcessors list in worker/jobs/index.ts

There are three ways to enqueue jobs:

• Schedule them in scripts/add-cron-jobs.ts, which will insert them into the local Redis database. Do this for jobs that need to repeat regularly.
• Programmatically (example: search code base for QueueService.add(...))
• Manually using the TaskForce.sh UI (Ask a teammate to add you!)
  • Go to TaskForce -> Dashboard -> Production queue -> "Add a new job"

Testing locally

You can run the worker queue locally as well as enqueue specific jobs:

• To run the queue, do npm run dev:worker
• To enqueue jobs locally, we use the script server/scripts/testing-jobs.ts
  • Simply edit the value of jobToQueue with the job you want
• Then, in another terminal, run the script to enqueue the job: npx ts-node server/scripts/testing-jobs.ts
• To connect your local Redis instance to Taskforce.sh, copy the connection token here then run the following command: npx taskforce --team "Engineering" -n "<your name> local" -t connection-token-goes-here

Socket IO Admin UI

You can visualize the state of the application's sockets using the Socket IO Admin UI. In non-development environments, you will need to authenticate to view the UI. See 1Pass for login instructions.