DeviceDetectorCache does not work with logs to stdout

[mikkeschiren]

I realize that maybe this a no-fix - but today many setups of Matomo is running in Kubernetes or Docker, and logs in many setups goes to stdout, is there any simple way to use this plugin in that context?

[diosmosis]

@mikkeschiren is this is a general matomo question or specific to DeviceDetectorCache? I don't see any output logging (apart from cli command output) in this plugin.

If for all of matomo, then it's possible to add logging to stdout via dependency injection. Adding something like this to /path/to/matom/config/config.php could work:

<?php

return [
    'log.handlers' => \DI\decorate(function ($previous) {
        $previous[] = new \Monolog\Handler\StreamHandler('php://stdout', Logger::WARNING);
        return $previous;
    }),
];

[mikkeschiren]

As I understand this plugin, it is using logs to warm the cache, and because of logs going to stdout in a normal docker setup, it is not usable, I think, in a docker environment.

[tsteur]

The plugin indeed only works on log files. The docker would somehow need to be configured to write log files for every tracking request and Matomo needs to be able to have read access. It won't work otherwise unfortunately.