Monolog RotatingFileHandler save to a specific file according to log type

Question

I'm trying to do something with monolog that I'm not sure it's possible. So I was thinking of a practical way to organize the log files.

First I thought to have 3 different files, INFO, WARNING and ERROR, but it would be difficult to search a specific date inside de file. So I decided to organize like this:

Logs

• |_ Info |_Year |_12-05-2016.log
• |_Warning |_Year |_12-05-2016.log
• |_Error |_Year |_12-05-2016.log

Here's what I decided to do

$infoStreamHandler = new \Monolog\Handler\RotatingFileHandler($settings['path_info'].'/info.log', Monolog\Logger::INFO);
$warningStreamHandler = new \Monolog\Handler\RotatingFileHandler($settings['path_warn'].'/warning.log', Monolog\Logger::WARNING);
$errorStreamHandler = new \Monolog\Handler\RotatingFileHandler($settings['path_error'].'/error.log', Monolog\Logger::ERROR);

$logger ->pushHandler($infoStreamHandler);
$logger->pushHandler($warningStreamHandler);
$logger->pushHandler($errorStreamHandler);

But this does not work as I expected. I tried first with StreamHandler and it worked(but it was only creating one file for all dates), but as soon as I switched to RotatingFileHandler it saved the same warning in all 3 files, instead of saving it in the warning log only.

Any thoughts ?

Thank you in advance.

Answer 1

If you want to divide your logs to ./path/to/directory/2017/07/21-yournamelog.log this is what you need to do:

$logger = new Logger('chanel-name');
$handler = new RotatingFileHandler('./path/to/directory/yournamelog.log', 0, Logger::INFO, true, 0664);
# '/' in date format is treated like '/' in directory path
# so Y/m/d-filename will create path: eg. 2017/07/21-filename.log
$handler->setFilenameFormat('{date}-{filename}', 'Y/m/d');
$logger->pushHandler($handler);

$array = ["x" => "y"];
$logger->addInfo('new message', $array);

It will create log file in path: ./path/to/directory/2017/07/21-yournamelog.log with content:

[2017-07-21 14:33:49] chanel-name.INFO: new message {"x":"y"} []

Answer 2

So I just found what was the problem. I was missing a param, the $maxFiles. $infoStreamHandler = new \Monolog\Handler\RotatingFileHandler($settings['path_info'].'/info.log', 0, Monolog\Logger::INFO);

And it works perfectly now!