preventOverlapping for distinct tasks

[archonia-chris]

Description
preventOverlapping allows to skip a task if the previous execution is still running. Sometimes there are multiple distinct tasks that shouldn't run concurrently. If we are allowed to set "lockKey", we can easily accomplish that.

Example
One way to provide this feature would be as an extra parameter to preventOverlapping that overrides "lockKey".

// Task1 
$schedule->run('/usr/bin/php dosomething.php')
         ->everyFiveMinutes()
         ->preventOverlapping( null, 'theonelock' );

// Task2
$schedule->run('/usr/bin/php dosomethingelse.php')
         ->everyTenMinutes()
         ->preventOverlapping( null, 'theonelock' );

Code
private function lockKey() { return $this->custom_lockkey ?? 'crunz-' . \md5($this->buildCommand()); }

[PabloKowalczyk]

Hello,

i like your idea, but with a little different API. New method on Event class should do the job, for example:

public function lockKey(string $key): self;

Would you like to provide a PR?

[archonia-chris]

There is already a function lockKey on the Event class
private function lockKey()
Should that one be renamed?

[PabloKowalczyk]

There is already a function lockKey on the Event class
private function lockKey()
Should that one be renamed?

Yes, it is internal method and can be renamed safely.