Dex Backend

Local development

Prerequisites

• Node.js
• Docker

Setup DB & run the application

1. Install dependencies:

npm install

2. Run docker container with DB locally, this will also run the DB migrations

npm run db:start

3. Start the development server:

npm run serve:dev

Database

Schema changes

This application uses Prisma as an ORM. To make changes to the DB schema, you need to update the schema in prisma/schema.prisma.

• For prototyping during development you can push the schema changes to the DB using:

  npm run db:push-schema
• Once the schema changes are ready to deploy, you can generate and apply a prisma migration file with the change using:

  prisma migrate dev --name <NAME_OF_YOUR_MIGRATION>

User defined PostgreSQL functions

This application uses user defined functions in the PostgreSQL database. These functions are defined in the sql-functions directory.

• For prototyping during development you can push the functions to the DB using:

  npm run db:push-functions
• Once the functions are ready to deploy you have to manually create an empty prisma migration for them using:

  prisma migrate dev --create-only --name <NAME_OF_YOUR_MIGRATION>
  Then, copy your sql code into the newly created migration file. Afterwards, apply the changes using prisma migrate dev

Testing

# unit tests
npm run test

# e2e tests
npm run test:e2e

# test coverage
npm run test:cov

Further commands for interacting with the DB container

# to start
npm run db:start

# to stop container
npm run db:stop

# to remove (will delete all db data)
npm run db:remove

# to reset (delete all data and recreate db)
npm run db:reset

Further commands for running the app

# development
npm run serve

# watch mode
npm run serve:dev

# debug mode
npm run serve:debug

# production mode
npm run build
npm run serve:prod