158 lines
4.2 KiB
Markdown
158 lines
4.2 KiB
Markdown
# Mobicoop V3 - Configuration Service
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Configuration items management. Used to configure all services using a broker to disseminate the configuration items.
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Each item consists in :
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- a **uuid** : a unique identifier for the configuration item
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- a **domain** : each service is associated with one or more domains, represented by an uppercase string (eg. _USER_)
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- a **key** : the key of the configuration item (a string)
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- a **value** : the value of the configuration item (always a string, each service must cast the value if needed)
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This service centralizes the configuration items, but theoratically each service should "push" its items toward the configuration service.
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Practically, it's the other way round as it's easier to use this configuration service as the single source of truth. This is why configuration items key and domain are immutable : services may use hardcoded domain-key pairs. Therefore, only values can be updated.
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## Available domains
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- **USER** : user related configuration item
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## Requirements
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You need [Docker](https://docs.docker.com/engine/) and its [compose](https://docs.docker.com/compose/) plugin.
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You also need NodeJS installed locally : we **strongly** advise to install [Node Version Manager](https://github.com/nvm-sh/nvm) and use the latest LTS version of Node (check that your local version matches with the one used in the Dockerfile).
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The API will run inside a docker container, **but** the install itself is made outside the container, because during development we need tools that need to be available locally (eg. ESLint, Prettier...).
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A RabbitMQ instance is also required to send / receive messages when data has been inserted/updated/deleted.
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## Installation
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- copy `.env.dist` to `.env` :
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```bash
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cp .env.dist .env
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```
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Modify it if needed.
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- install the dependencies :
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```bash
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npm install
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```
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- start the containers :
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```bash
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docker compose up -d
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```
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The app runs automatically on port **5003**.
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## Database migration
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Before using the app, you need to launch the database migration (it will be launched inside the container) :
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```bash
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npm run migrate
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```
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## Usage
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The app exposes the following [gRPC](https://grpc.io/) services :
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- **FindByUuid** : find a configuration item by its uuid
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```json
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{
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"uuid": "80126a61-d128-4f96-afdb-92e33c75a3e1"
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}
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```
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- **FindAll** : find all configuration items; you can use pagination with `page` (default:_1_) and `perPage` (default:_10_)
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```json
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{
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"page": 1,
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"perPage": 10
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}
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```
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- **Create** : create a configuration item (note that uuid is optional, a uuid will be automatically attributed if it is not provided)
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```json
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{
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"domain": "USER",
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"key": "key1",
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"value": "value1"
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}
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```
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- **Update** : update a configuration item value
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```json
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{
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"value": "value2",
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"uuid": "30f49838-3f24-42bb-a489-8ffb480173ae"
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}
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```
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- **Delete** : delete a configuration item by its uuid
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```json
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{
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"uuid": "80126a61-d128-4f96-afdb-92e33c75a3e1"
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}
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```
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- **Propagate** : propagate all configuration items using the message broker
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```json
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{}
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```
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## Messages
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As mentionned earlier, RabbitMQ messages are sent after these events :
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- **Create** (message : the created configuration item informations)
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- **Update** (message : the updated configuration item informations)
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- **Delete** (message : the uuid of the deleted configuration item)
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- **Propagate** (message : all the configuration items)
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Various messages are also sent for logging purpose.
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## Tests / ESLint / Prettier
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Tests are run outside the container for ease of use (switching between different environments inside containers using prisma is complicated and error prone).
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The integration tests use a dedicated database (see _db-test_ section of _docker-compose.yml_).
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```bash
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# run all tests (unit + integration)
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npm run test
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# unit tests only
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npm run test:unit
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# integration tests only
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npm run test:integration
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# coverage
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npm run test:cov
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# ESLint
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npm run lint
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# Prettier
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npm run pretty
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```
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## License
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Mobicoop V3 - Configuration Service is [AGPL licensed](LICENSE).
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