org.apache.hudi.org.apache.hadoop.hbase.ipc.PluggableBlockingQueue Maven / Gradle / Ivy
/**
* 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.hadoop.hbase.ipc;
import java.util.concurrent.BlockingQueue;
import org.apache.hadoop.conf.Configuration;
import org.apache.yetus.audience.InterfaceAudience;
import org.apache.yetus.audience.InterfaceStability;
/**
* Abstract class template for defining a pluggable blocking queue implementation to be used
* by the 'pluggable' call queue type in the RpcExecutor.
*
* The intention is that the constructor shape helps re-inforce the expected parameters needed
* to match up to how the RpcExecutor will instantiate instances of the queue.
*
* If the implementation class implements the
* {@link org.apache.hadoop.hbase.conf.ConfigurationObserver} interface, it will also be wired
* into configuration changes.
*
* Instantiation requires a constructor with {@code
* final int maxQueueLength,
* final PriorityFunction priority,
* final Configuration conf)}
* as the arguments.
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public abstract class PluggableBlockingQueue implements BlockingQueue {
protected final int maxQueueLength;
protected final PriorityFunction priority;
protected final Configuration conf;
public PluggableBlockingQueue(final int maxQueueLength,
final PriorityFunction priority, final Configuration conf) {
this.maxQueueLength = maxQueueLength;
this.priority = priority;
this.conf = conf;
}
}