How to maintain different log files for different purposes in Yii2 - php

Question

I am using Yii2 for a project. I have a class for consuming a third party service. This class has two methods sendRequest and processResponse. I would like to maintain separate logs for payload in sendRequest before actually sending it and another log for the raw response data received in processResponse before doing any processing. Additionally I would like log rotation on both logs as the files may grow indefinitely and want both files to be separate from the default app.log. Is this possible? How may I implement this using Yii2 APIs?

Answer 1

I eventually reverted back to using Yii2 logger by adding 2 additional file targets in my #app/config/main.php. The file targets had categories = ['orders'] and ['pushNotifications'] respectively so that in my code I use:
Yii::info($message, 'pushNotifications');
or
Yii::info($message, 'orders');
Here is my log config:
'log' => [
'traceLevel' => YII_DEBUG ? 3 : 0,
'targets' => [
[
'class' => 'yii\log\FileTarget',
'levels' => ['error', 'warning'],
],
[
'class' => 'yii\log\FileTarget',
'levels' => ['info'],
'categories' => ['orders'],
'logFile' => '#app/runtime/logs/Orders/requests.log',
'maxFileSize' => 1024 * 2,
'maxLogFiles' => 20,
],
[
'class' => 'yii\log\FileTarget',
'levels' => ['info'],
'categories' => ['pushNotifications'],
'logFile' => '#app/runtime/logs/Orders/notification.log',
'maxFileSize' => 1024 * 2,
'maxLogFiles' => 50,
],
],
],

Answer 2

Since I wasn't quite sure how to configure Yii2 logger to do what I wanted, and googling the subject wasn't much help I decided to go with a third-party logger. The one I chose was Monolog. This functionality was only needed in one class so I create a static getLogger method which returned an instance of Monolog\Logger.
public static function getLogger($name) {
$logger = new \Monolog\Logger($name);
$logger->pushHandler(new \Monolog\Handlers\RotatingFileHandle(Yii::getAlias("#app/runtime/logs/$name.log")), \Monolog\Logger::INFO);
return $logger;
}
Then in sendRequest method I use:
static::getLogger('orders')->info($outgoingXmlPayload.$curlResponseXml);
In the processResponse method I use:
static::getLogger('pushNotifications')->info($notificationXml);
I will be glad to hear(or read) from anyone who has a better solution still. Thanks.
--Ab

Answer 3

Asterisk * may also come handy if we need to collect more subcategories into a cummulative file:
'log' => [
'traceLevel' => YII_DEBUG ? 3 : 0,
'flushInterval' => 100, // may prevent from memory exhaustion
'targets' => [
[
'class' => 'yii\log\FileTarget',
'categories' => ['eshop1*'],
'logFile' => '#app/runtime/logs/eshop1.log',
'logVars' => [], // don't log global vars
],
[
'class' => 'yii\log\FileTarget',
'categories' => ['eshop2*'],
'logFile' => '#app/runtime/logs/eshop2.log',
'logVars' => ['GET', 'POST'], // log some globals
'exportInterval' => 100, // may prevent from memory exhaust
],
],
],

Answer 4

This work for me, for dev log
'components' => [
'log' => [
'traceLevel' => YII_DEBUG ? 10 : 0,
'targets' => [
[
'class' => 'yii\log\FileTarget',
'logFile' => '#runtime/logs/dev.log',
'categories' => ['dev'],
'levels' => ['trace'],
],
],
],
it's used
Yii::debug('log step 1', 'dev');