001package org.eclipse.aether.internal.impl.synccontext; 002 003/* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022import java.util.Objects; 023 024import javax.annotation.PreDestroy; 025import javax.inject.Inject; 026import javax.inject.Named; 027import javax.inject.Singleton; 028 029import org.eclipse.aether.RepositorySystemSession; 030import org.eclipse.aether.SyncContext; 031import org.eclipse.aether.internal.impl.synccontext.named.NamedLockFactoryAdapter; 032import org.eclipse.aether.internal.impl.synccontext.named.NamedLockFactorySelector; 033import org.eclipse.aether.spi.locator.Service; 034import org.eclipse.aether.spi.locator.ServiceLocator; 035import org.eclipse.aether.spi.synccontext.SyncContextFactory; 036 037import static java.util.Objects.requireNonNull; 038 039/** 040 * Default {@link SyncContextFactory} implementation that uses named locks. 041 */ 042@Singleton 043@Named 044public final class DefaultSyncContextFactory 045 implements SyncContextFactory, Service 046{ 047 private NamedLockFactoryAdapter namedLockFactoryAdapter; 048 049 /** 050 * Constructor used with DI, where factories are injected and selected based on key. 051 */ 052 @Inject 053 public DefaultSyncContextFactory( final NamedLockFactorySelector selector ) 054 { 055 this.namedLockFactoryAdapter = new NamedLockFactoryAdapter( 056 selector.getSelectedNameMapper(), 057 selector.getSelectedNamedLockFactory() 058 ); 059 } 060 061 public DefaultSyncContextFactory() 062 { 063 // ctor for ServiceLoader 064 } 065 066 @Override 067 public void initService( final ServiceLocator locator ) 068 { 069 NamedLockFactorySelector selector = Objects.requireNonNull( 070 locator.getService( NamedLockFactorySelector.class ) ); 071 this.namedLockFactoryAdapter = new NamedLockFactoryAdapter( 072 selector.getSelectedNameMapper(), 073 selector.getSelectedNamedLockFactory() 074 ); 075 } 076 077 @Override 078 public SyncContext newInstance( final RepositorySystemSession session, final boolean shared ) 079 { 080 requireNonNull( session, "session cannot be null" ); 081 return namedLockFactoryAdapter.newInstance( session, shared ); 082 } 083 084 @PreDestroy 085 public void shutdown() 086 { 087 namedLockFactoryAdapter.shutdown(); 088 } 089}