Moved locking logic for CLI commands to a common abstract class

module/CLI/src/Command/Util/AbstractLockedCommand.php

@@ -0,0 +1,47 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\CLI\Command\Util;
+
+use Shlinkio\Shlink\CLI\Util\ExitCodes;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Lock\Factory as Locker;
+
+use function sprintf;
+
+abstract class AbstractLockedCommand extends Command
+{
+    /** @var Locker */
+    private $locker;
+
+    public function __construct(Locker $locker)
+    {
+        parent::__construct();
+        $this->locker = $locker;
+    }
+
+    final protected function execute(InputInterface $input, OutputInterface $output): ?int
+    {
+        $lockConfig = $this->getLockConfig();
+        $lock = $this->locker->createLock($lockConfig->lockName(), $lockConfig->ttl(), $lockConfig->isBlocking());
+
+        if (! $lock->acquire($lockConfig->isBlocking())) {
+            $output->writeln(
+                sprintf('<comment>Command "%s" is already in progress. Skipping.</comment>', $lockConfig->lockName())
+            );
+            return ExitCodes::EXIT_WARNING;
+        }
+
+        try {
+            return $this->lockedExecute($input, $output);
+        } finally {
+            $lock->release();
+        }
+    }
+
+    abstract protected function lockedExecute(InputInterface $input, OutputInterface $output): int;
+
+    abstract protected function getLockConfig(): LockedCommandConfig;
+}