Viewing file:  CacheCommandMutex.php (3.59 KB) -rw-r--r--
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<?php
namespace Illuminate\Console;
use Carbon\CarbonInterval;
use Illuminate\Cache\DynamoDbStore;
use Illuminate\Contracts\Cache\Factory as Cache;
use Illuminate\Contracts\Cache\LockProvider;
use Illuminate\Support\InteractsWithTime;
class CacheCommandMutex implements CommandMutex
{
use InteractsWithTime;
/**
* The cache factory implementation.
*
* @var \Illuminate\Contracts\Cache\Factory
*/
public $cache;
/**
* The cache store that should be used.
*
* @var string|null
*/
public $store = null;
/**
* Create a new command mutex.
*
* @param \Illuminate\Contracts\Cache\Factory $cache
*/
public function __construct(Cache $cache)
{
$this->cache = $cache;
}
/**
* Attempt to obtain a command mutex for the given command.
*
* @param \Illuminate\Console\Command $command
* @return bool
*/
public function create($command)
{
$store = $this->cache->store($this->store);
$expiresAt = method_exists($command, 'isolationLockExpiresAt')
? $command->isolationLockExpiresAt()
: CarbonInterval::hour();
if ($this->shouldUseLocks($store->getStore())) {
return $store->getStore()->lock(
$this->commandMutexName($command),
$this->secondsUntil($expiresAt)
)->get();
}
return $store->add($this->commandMutexName($command), true, $expiresAt);
}
/**
* Determine if a command mutex exists for the given command.
*
* @param \Illuminate\Console\Command $command
* @return bool
*/
public function exists($command)
{
$store = $this->cache->store($this->store);
if ($this->shouldUseLocks($store->getStore())) {
$lock = $store->getStore()->lock($this->commandMutexName($command));
return tap(! $lock->get(), function ($exists) use ($lock) {
if ($exists) {
$lock->release();
}
});
}
return $this->cache->store($this->store)->has($this->commandMutexName($command));
}
/**
* Release the mutex for the given command.
*
* @param \Illuminate\Console\Command $command
* @return bool
*/
public function forget($command)
{
$store = $this->cache->store($this->store);
if ($this->shouldUseLocks($store->getStore())) {
return $store->getStore()->lock($this->commandMutexName($command))->forceRelease();
}
return $this->cache->store($this->store)->forget($this->commandMutexName($command));
}
/**
* Get the isolatable command mutex name.
*
* @param \Illuminate\Console\Command $command
* @return string
*/
protected function commandMutexName($command)
{
$baseName = 'framework'.DIRECTORY_SEPARATOR.'command-'.$command->getName();
return method_exists($command, 'isolatableId')
? $baseName.'-'.$command->isolatableId()
: $baseName;
}
/**
* Specify the cache store that should be used.
*
* @param string|null $store
* @return $this
*/
public function useStore($store)
{
$this->store = $store;
return $this;
}
/**
* Determine if the given store should use locks for command mutexes.
*
* @param \Illuminate\Contracts\Cache\Store $store
* @return bool
*/
protected function shouldUseLocks($store)
{
return $store instanceof LockProvider && ! $store instanceof DynamoDbStore;
}
}
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