logger/README.md

# Mobicoop V3 - Logger Service

Logging system for all services.

## Requirements

You need [Docker](https://docs.docker.com/engine/) and its [compose](https://docs.docker.com/compose/) plugin.

A RabbitMQ instance is also required to receive messages from other services.

## Installation

Copy `.env.dist` to `.env` :

```bash
cp .env.dist .env
```

and modify it to suit your needs.

Then execute :

```bash
docker compose up -d
```

The app runs automatically on the port defined in `SERVICE_PORT` of `.env` file (default : _5099_).

## Usage

The app subscribes to RabbitMQ queues in order to log messages. We use the routing key with the given format : <**service**>.<**action**>.<**level**>, with :

-   **service** : the name of the service that has emitted the message
-   **action** : the action that was at the origin of the message (one or more words separated by a dot)
-   **level** : the severity (_log level_) of the message, as described in [RFC5424 syslog](https://www.rfc-editor.org/rfc/rfc5424) :
    -   **emer** : Emergency: system is unusable
    -   **alert** : Alert: action must be taken immediately
    -   **crit** : Critical: critical conditions
    -   **error** : Error: error conditions
    -   **warning** : Warning: warning conditions
    -   **notice** : Notice: normal but significant condition
    -   **info** : Informational: informational messages
    -   **debug** : Debug: debug-level messages

Examples of valid routing keys :

-   user.create.info
-   user.create.crit
-   user.update.warning
-   auth.username.add.info

It is the responsibility of each service to set the routing key to the appropriate value.

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).

## License

Mobicoop V3 - Logger Service is [AGPL licensed](LICENSE).
initial commit 2022-12-23 15:36:23 +00:00			`# Mobicoop V3 - Logger Service`
Initial commit 2022-12-23 15:20:08 +00:00
initial commit 2022-12-23 15:36:23 +00:00			`Logging system for all services.`
Initial commit 2022-12-23 15:20:08 +00:00
initial commit 2022-12-23 15:36:23 +00:00			`## Requirements`
Initial commit 2022-12-23 15:20:08 +00:00
update readme 2023-01-04 12:51:53 +00:00			`You need [Docker](https://docs.docker.com/engine/) and its [compose](https://docs.docker.com/compose/) plugin.`
Initial commit 2022-12-23 15:20:08 +00:00
initial commit 2022-12-23 15:36:23 +00:00			`A RabbitMQ instance is also required to receive messages from other services.`
Initial commit 2022-12-23 15:20:08 +00:00
initial commit 2022-12-23 15:36:23 +00:00			`## Installation`
Initial commit 2022-12-23 15:20:08 +00:00
initial commit 2022-12-23 15:36:23 +00:00			Copy `.env.dist` to `.env` :
Initial commit 2022-12-23 15:20:08 +00:00
initial commit 2022-12-23 15:36:23 +00:00			```bash
			`cp .env.dist .env`
Initial commit 2022-12-23 15:20:08 +00:00			```

initial commit 2022-12-23 15:36:23 +00:00			`and modify it to suit your needs.`
Initial commit 2022-12-23 15:20:08 +00:00
initial commit 2022-12-23 15:36:23 +00:00			`Then execute :`
Initial commit 2022-12-23 15:20:08 +00:00
initial commit 2022-12-23 15:36:23 +00:00			```bash
update readme 2023-01-04 12:51:53 +00:00			`docker compose up -d`
initial commit 2022-12-23 15:36:23 +00:00			```
Initial commit 2022-12-23 15:20:08 +00:00
initial commit 2022-12-23 15:36:23 +00:00			The app runs automatically on the port defined in `SERVICE_PORT` of `.env` file (default : _5099_).
Initial commit 2022-12-23 15:20:08 +00:00
dynamic dir and names, log rotation 2022-12-26 14:08:51 +00:00			`## Usage`

			`The app subscribes to RabbitMQ queues in order to log messages. We use the routing key with the given format : <service>.<action>.<level>, with :`

			`- service : the name of the service that has emitted the message`
			`- action : the action that was at the origin of the message (one or more words separated by a dot)`
			`- level : the severity (_log level_) of the message, as described in [RFC5424 syslog](https://www.rfc-editor.org/rfc/rfc5424) :`
			`- emer : Emergency: system is unusable`
			`- alert : Alert: action must be taken immediately`
			`- crit : Critical: critical conditions`
			`- error : Error: error conditions`
			`- warning : Warning: warning conditions`
			`- notice : Notice: normal but significant condition`
			`- info : Informational: informational messages`
			`- debug : Debug: debug-level messages`

			`Examples of valid routing keys :`

			`- user.create.info`
			`- user.create.crit`
			`- user.update.warning`
			`- auth.username.add.info`

			`It is the responsibility of each service to set the routing key to the appropriate value.`

			`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).`

Initial commit 2022-12-23 15:20:08 +00:00			`## License`

initial commit 2022-12-23 15:36:23 +00:00			`Mobicoop V3 - Logger Service is [AGPL licensed](LICENSE).`