73 lines
1.7 KiB
PHP
73 lines
1.7 KiB
PHP
<?php
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namespace OC\Files\Lock;
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use OCP\Files\Lock\ILock;
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use OCP\Files\Lock\ILockManager;
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use OCP\Files\Lock\ILockProvider;
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use OCP\Files\Lock\LockContext;
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use OCP\PreConditionNotMetException;
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class LockManager implements ILockManager {
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private ?ILockProvider $lockProvider = null;
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private ?LockContext $lockInScope = null;
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public function registerLockProvider(ILockProvider $lockProvider): void {
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if ($this->lockProvider) {
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throw new PreConditionNotMetException('There is already a registered lock provider');
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}
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$this->lockProvider = $lockProvider;
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}
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public function isLockProviderAvailable(): bool {
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return $this->lockProvider !== null;
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}
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public function runInScope(LockContext $lock, callable $callback): void {
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if (!$this->lockProvider) {
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$callback();
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return;
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}
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if ($this->lockInScope) {
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throw new PreConditionNotMetException('Could not obtain lock scope as already in use by ' . $this->lockInScope);
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}
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try {
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$this->lockInScope = $lock;
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$callback();
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} finally {
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$this->lockInScope = null;
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}
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}
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public function getLockInScope(): ?LockContext {
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return $this->lockInScope;
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}
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public function getLocks(int $fileId): array {
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if (!$this->lockProvider) {
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throw new PreConditionNotMetException('No lock provider available');
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}
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return $this->lockProvider->getLocks($fileId);
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}
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public function lock(LockContext $lockInfo): ILock {
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if (!$this->lockProvider) {
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throw new PreConditionNotMetException('No lock provider available');
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}
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return $this->lockProvider->lock($lockInfo);
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}
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public function unlock(LockContext $lockInfo): void {
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if (!$this->lockProvider) {
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throw new PreConditionNotMetException('No lock provider available');
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}
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$this->lockProvider->unlock($lockInfo);
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}
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}
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