Juno

Juno is Bits of Good's central infrastructure API, integrating several in-house services to simplify and streamline project development.

Repo Structure

The project is a monorepo using a combination of NestJS, gRPC, Protobuf, Prisma, and Postgres for API endpoints, interservice communication, and object storage/modeling.

Packages are managed through Yarn Workspaces. The current packages are as follows:

• api-gateway: The publicly visible API routes and their first-layer validation + logic. Decides what services to utilize per-request via RPC based on the API route and given information
• auth-service: An internal service used to handle all API authentication necessities. Provides RPC endpoints for API key generation/validation/revocation and JWT generation/validation. Used in some endpoints but primarily as middleware within the gateway to ensure authorized access to other services
• db-service: An internal service that interfaces with the database layer (Postgres). Handles all schema structuring and object relations (users, projects, api keys, etc.). This was kept as a single service to provide an interface for all other services to perform CRUD operations on the data they work with without needing to know the underlying storage internals

Building

Prerequisites

• Docker Desktop v4.24+
• WSL if running on a Windows OS
• protoc

Using Docker

As this repository contains multiple packages, Docker is used to spin up all microservices in order with their respective dependencies. For more details regarding the docker process and its internal networking mechanism, take a look at the docker-compose.yml file.

Most of the docker-related functionality has been abstracted away into yarn commands.

Install needed dependencies

All package dependencies must first be installed by using the following command in the root directory:

yarn

For development

For spinning up the entire stack (not watching for changes):

yarn start:dev

For spinning up the stack and automatically updating as changes are made to files:

yarn start:dev:live-all

Making requests

Requests can be made at the endpoint localhost:3000/some/request/path.

Testing

Juno currently has support for E2E tests via Jest.

Run tests for specific microservice

(In root directory)

• api-gateway: yarn test:e2e:api-gateway
• auth-service: yarn test:e2e:auth-service
• db-service: yarn test:e2e:db-service

If you're working on juno and wish to test with your updates in live time (watched tests), run the prior command suffixed with -live. This looks like the following for each service:

• api-gateway: yarn test:e2e:api-gateway-live
• auth-service: yarn test:e2e:auth-service-live
• db-service: yarn test:e2e:db-service-live

Windows Troubleshooting

• Make sure everything is done through the Windows Subsystem for Linux (WSL).
• protoc must be installed.

.sh related problems - switch line endings to LF

additional property <> is not allowed> - update docker

db-service is unhealthy - wget script likely failed to install, make sure all .sh files have correct line endings and permissions (chmod)

• First, ensure Docker Desktop is actually running.
• If it is, Docker Desktop most likely decided to nuke your settings, re-enable WSL in Settings > Resources > WLS integration

./get_grpc_probe.sh: Permission denied - add permission to get_grpc_probe using chmod:

chmod +x docker/get_grpc_probe.sh
chmod +x packages/db-service/entrypoint.sh