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Christoph Wurst 450136b7cf Add a helper function that makes it easier to log from anywhere ... Our DI is able to inject a logger implementation to any server and app class if they want one. However, sometimes DI isn't applicable or hard to add. In those cases we typically fell back to the *service locator* pattern where we acquired a logger from the server via a global variable. There were some issues with that * `\OC` is a private class, apps are not supposed to use it * `\OC::$server` is a global variable, a well known anti-pattern * `\OC::$server->get(...)` uses the service locator anti-pattern * `\OC::$server->get(...)` may throw * `\OC::$server->get(LoggerInterface::class)` is not scoped to an app With this patch I'm proposing a new helper function ``\OCP\Log\logger`` that can be used to acquire a logger more easily. This function is meant to be public API and therefore apps may use it and there is an optional parameter to specifiy the app ID. The function hides all the ugly details about the global variable and the potentially thrown exceptions from the user. Therefore it's guaranteed that you always get a logger instance. In the worst case you get a noop, though those occasions should be rare. Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>		4 years ago
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Audit	Update php licenses	5 years ago
IDataLogger.php	Update php licenses	5 years ago
IFileBased.php	Update php licenses	5 years ago
ILogFactory.php	Allow to get custom loggers for syslog, errorlog and systemdlog too	4 years ago
IWriter.php	Update php licenses	5 years ago
RotationTrait.php	Update php licenses	5 years ago
functions.php	Add a helper function that makes it easier to log from anywhere	4 years ago