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.spi.locator.Service; 033import org.eclipse.aether.spi.locator.ServiceLocator; 034import org.eclipse.aether.spi.synccontext.SyncContextFactory; 035 036import static java.util.Objects.requireNonNull; 037 038/** 039 * Default {@link SyncContextFactory} implementation that uses named locks. 040 */ 041@Singleton 042@Named 043public final class DefaultSyncContextFactory 044 implements SyncContextFactory, Service 045{ 046 private NamedLockFactoryAdapter namedLockFactoryAdapter; 047 048 /** 049 * Constructor used with DI, where factories are injected and selected based on key. 050 */ 051 @Inject 052 public DefaultSyncContextFactory( final NamedLockFactorySelector selector ) 053 { 054 this.namedLockFactoryAdapter = new NamedLockFactoryAdapter( 055 selector.getSelectedNameMapper(), 056 selector.getSelectedNamedLockFactory(), 057 NamedLockFactorySelector.TIME, 058 NamedLockFactorySelector.TIME_UNIT 059 ); 060 } 061 062 public DefaultSyncContextFactory() 063 { 064 // ctor for ServiceLoader 065 } 066 067 @Override 068 public void initService( final ServiceLocator locator ) 069 { 070 NamedLockFactorySelector selector = Objects.requireNonNull( 071 locator.getService( NamedLockFactorySelector.class ) ); 072 this.namedLockFactoryAdapter = new NamedLockFactoryAdapter( 073 selector.getSelectedNameMapper(), 074 selector.getSelectedNamedLockFactory(), 075 NamedLockFactorySelector.TIME, 076 NamedLockFactorySelector.TIME_UNIT 077 ); 078 } 079 080 @Override 081 public SyncContext newInstance( final RepositorySystemSession session, final boolean shared ) 082 { 083 requireNonNull( session, "session cannot be null" ); 084 return namedLockFactoryAdapter.newInstance( session, shared ); 085 } 086 087 @PreDestroy 088 public void shutdown() 089 { 090 namedLockFactoryAdapter.shutdown(); 091 } 092}