| /** |
| * 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.client; |
| |
| import java.io.IOException; |
| import java.io.InterruptedIOException; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| import org.apache.hbase.thirdparty.com.google.protobuf.RpcCallback; |
| |
| /** |
| * For implementation coprocessor related methods in {@link Table} and {@link Admin} interface. |
| * @deprecated since 3.0.0, will be removed in 4.0.0 along with the coprocessor related methods in |
| * {@link Table} and {@link Admin} interface. |
| */ |
| @Deprecated |
| @InterfaceAudience.Private |
| class CoprocessorBlockingRpcCallback<R> implements RpcCallback<R> { |
| private R result; |
| private boolean resultSet = false; |
| |
| /** |
| * Called on completion of the RPC call with the response object, or {@code null} in the case of |
| * an error. |
| * @param parameter the response object or {@code null} if an error occurred |
| */ |
| @Override |
| public void run(R parameter) { |
| synchronized (this) { |
| result = parameter; |
| resultSet = true; |
| this.notifyAll(); |
| } |
| } |
| |
| /** |
| * Returns the parameter passed to {@link #run(Object)} or {@code null} if a null value was |
| * passed. When used asynchronously, this method will block until the {@link #run(Object)} method |
| * has been called. |
| * @return the response object or {@code null} if no response was passed |
| */ |
| public synchronized R get() throws IOException { |
| while (!resultSet) { |
| try { |
| this.wait(); |
| } catch (InterruptedException ie) { |
| InterruptedIOException exception = new InterruptedIOException(ie.getMessage()); |
| exception.initCause(ie); |
| throw exception; |
| } |
| } |
| return result; |
| } |
| } |