59 lines
2.0 KiB
Markdown
59 lines
2.0 KiB
Markdown
# Mobicoop V3 - Logger Service
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Logging system for all services.
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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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A RabbitMQ instance is also required to receive messages from other services.
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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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and modify it to suit your needs.
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Then execute :
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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 the port defined in `SERVICE_PORT` of `.env` file (default : _5099_).
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## Usage
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The app subscribes to RabbitMQ queues in order to log messages. We use the routing key with the given format : <**service**>.<**action**>.<**level**>, with :
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- **service** : the name of the service that has emitted the message
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- **action** : the action that was at the origin of the message (one or more words separated by a dot)
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- **level** : the severity (_log level_) of the message, as described in [RFC5424 syslog](https://www.rfc-editor.org/rfc/rfc5424) :
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- **emer** : Emergency: system is unusable
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- **alert** : Alert: action must be taken immediately
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- **crit** : Critical: critical conditions
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- **error** : Error: error conditions
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- **warning** : Warning: warning conditions
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- **notice** : Notice: normal but significant condition
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- **info** : Informational: informational messages
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- **debug** : Debug: debug-level messages
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Examples of valid routing keys :
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- user.create.info
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- user.create.crit
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- user.update.warning
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- auth.username.add.info
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It is the responsibility of each service to set the routing key to the appropriate value.
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To handle logs for a given service, a controller corresponding to the service must be set. In this controller, you must define a handler for each action and level. You must also define a unique RabbitMQ queue for this handler (this permits to use durable queues, allowing to keep logs in RabbitMQ even if the logger service is down).
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## License
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Mobicoop V3 - Logger Service is [AGPL licensed](LICENSE).
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