# Using the configuration file.

### Set authentication endpoint in configuration file

To enhance security and flexibility, you can directly set the notification endpoints in the **`configuration.json`**-file.

Example configuration for notification endpoints:

```json
"event_callbacks": [
  {
    "type": "onRelease",
    "url": "https://my-url.com/tmining",
    "secret": "wbLF2qz8bbsWY6"
  }
]
```

You can configure multiple callbacks by listing them in an array, allowing you to set different endpoints for different types of notifications.

***

### Set API Network Settings in configuration file.

The **`configuration.json`** file also contains network settings:

* On line 2, you can enable or disable SSL by setting the protocol to either **`https`** (for SSL) or **`http`** (without SSL):

  ```json
  "protocol": "https",
  ```
* If SSL is enabled, specify the certificates to use:<br>

  ```json
  "httpServer": {
    "port": 4431,
    "ssl": {
      "serverCert": "certificates/server-cert.pem",
      "serverKey": "certificates/server-key.pem"
    }
  }
  ```
* On line 32, you can update the port number used for incoming requests:<br>

  ```json
  "httpServer": {
    "port": 5000
  }
  ```

{% hint style="danger" %}
Restart the API service after modifying these settings.
{% endhint %}

***

### Set logging parameters in configuration file.

You can fine-tune logging by modifying the **`log4js`** section in the **`configuration.json`-**&#x66;ile. The most important setting is the **`level`** parameter:

#### Default logging, level setting - `debug`

```json
"level": "debug"
```

#### Increased logging, level setting - `trace`&#x20;

```json
"level": "trace"
```

{% hint style="danger" %}
Please note: the "trace" will generate a lot of logging.\*
{% endhint %}

***

### Configure log, file settings.

**EXAMPLE** for compressing the logs automatically and using rotating logfiles with a limited size:

```json
"file": {
"type": "dateFile",
"filename": "api.log",
"numBackups": "7",
"compress": true,
"layout": {
"type": "pattern",
"pattern": “%[%d %p [%f{2}:%l]%] %m%n"
}
}
```

Above configuration retains 7 compresse log backups.

{% hint style="success" %}
You can use all the **`log4js`**-settings, which are documented on the

[**OFFICIAL DOCUMENTATION SITE**](https://log4js-node.github.io/log4js-node/file.html).
{% endhint %}


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