/*
    * 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.apache.logging.log4j.core.async;
  
  import java.util.concurrent.BlockingQueue;
  
  import com.conversantmedia.util.concurrent.DisruptorBlockingQueue;
  import com.conversantmedia.util.concurrent.SpinPolicy;
  import org.apache.logging.log4j.core.config.Node;
  import org.apache.logging.log4j.core.config.plugins.Plugin;
  import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
  import org.apache.logging.log4j.core.config.plugins.PluginFactory;
  
  /**
   * Factory for creating instances of {@link DisruptorBlockingQueue}.
   *
   * @since 2.7
   */
  @Plugin(name = "DisruptorBlockingQueue", category = Node.CATEGORY, elementType = BlockingQueueFactory.ELEMENT_TYPE)
  public class DisruptorBlockingQueueFactory<E> implements BlockingQueueFactory<E> {
  
      private final SpinPolicy spinPolicy;
  
      private DisruptorBlockingQueueFactory(final SpinPolicy spinPolicy) {
          this.spinPolicy = spinPolicy;
      }
  
      @Override
      public BlockingQueue<E> create(final int capacity) {
          return new DisruptorBlockingQueue<>(capacity, spinPolicy);
      }
  
      @PluginFactory
      public static <E> DisruptorBlockingQueueFactory<E> createFactory(
          @PluginAttribute(value = "SpinPolicy", defaultString = "WAITING") final SpinPolicy spinPolicy
      ) {
          return new DisruptorBlockingQueueFactory<>(spinPolicy);
      }
  }