| // Copyright (C) 2020 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.gerritforge.gerrit.globalrefdb.validation; |
| |
| import com.google.inject.Inject; |
| import com.google.inject.assistedinject.Assisted; |
| |
| /** Wrapper around an {@link AutoCloseable} lock to allow logging of resource releasing. */ |
| public class LockWrapper implements AutoCloseable { |
| /** {@code LockWrapper} Factory for Guice assisted injection. */ |
| public interface Factory { |
| LockWrapper create( |
| @Assisted("project") String project, |
| @Assisted("refName") String refName, |
| @Assisted AutoCloseable lock); |
| } |
| |
| private final String project; |
| private final String refName; |
| private final AutoCloseable lock; |
| private final SharedRefLogger sharedRefLogger; |
| |
| /** |
| * Constructs a {@code LockWrapper} object for a specific refName of a project, which wraps a held |
| * lock, so that its details can be logged upon closure. |
| * |
| * @param sharedRefLogger to log the releasing of the lock |
| * @param project the project the lock has been acquired for |
| * @param refName the refName the lock has been acquired for |
| * @param lock the acquired lock |
| */ |
| @Inject |
| public LockWrapper( |
| SharedRefLogger sharedRefLogger, |
| @Assisted("project") String project, |
| @Assisted("refName") String refName, |
| @Assisted AutoCloseable lock) { |
| this.lock = lock; |
| this.sharedRefLogger = sharedRefLogger; |
| this.project = project; |
| this.refName = refName; |
| } |
| |
| /** |
| * Release the acquired lock and logs the lock release operation. |
| * |
| * @throws Exception if this resource cannot be closed |
| */ |
| @Override |
| public void close() throws Exception { |
| lock.close(); |
| sharedRefLogger.logLockRelease(project, refName); |
| } |
| } |