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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.eclipse.aether.named.providers;

import javax.inject.Named;
import javax.inject.Singleton;

import java.util.concurrent.TimeUnit;

import org.eclipse.aether.named.support.NamedLockFactorySupport;
import org.eclipse.aether.named.support.NamedLockSupport;

/**
 * A no-op lock factory, that creates no-op locks.
 */
@Singleton
@Named(NoopNamedLockFactory.NAME)
public class NoopNamedLockFactory extends NamedLockFactorySupport {
    public static final String NAME = "noop";

    @Override
    protected NoopNamedLock createLock(final String name) {
        return new NoopNamedLock(name, this);
    }

    private static final class NoopNamedLock extends NamedLockSupport {
        private NoopNamedLock(final String name, final NamedLockFactorySupport factory) {
            super(name, factory);
        }

        @Override
        protected boolean doLockShared(final long time, final TimeUnit unit) {
            return true;
        }

        @Override
        protected boolean doLockExclusively(final long time, final TimeUnit unit) {
            return true;
        }

        @Override
        protected void doUnlock() {
            // no-op
        }
    }
}