001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase;
019
020import org.apache.hadoop.hbase.coordination.SplitLogManagerCoordination;
021import org.apache.hadoop.hbase.coordination.SplitLogWorkerCoordination;
022import org.apache.hadoop.hbase.procedure.ProcedureCoordinatorRpcs;
023import org.apache.hadoop.hbase.procedure.ProcedureMemberRpcs;
024import org.apache.yetus.audience.InterfaceAudience;
025import org.apache.zookeeper.KeeperException;
026
027import java.io.IOException;
028
029/**
030 * Implementations of this interface will keep and return to clients
031 * implementations of classes providing API to execute
032 * coordinated operations. This interface is client-side, so it does NOT
033 * include methods to retrieve the particular interface implementations.
034 *
035 * For each coarse-grained area of operations there will be a separate
036 * interface with implementation, providing API for relevant operations
037 * requiring coordination.
038 */
039@InterfaceAudience.Private
040public interface CoordinatedStateManager {
041  /**
042   * Method to retrieve coordination for split log worker
043   */
044  SplitLogWorkerCoordination getSplitLogWorkerCoordination();
045
046  /**
047   * Method to retrieve coordination for split log manager
048   */
049  SplitLogManagerCoordination getSplitLogManagerCoordination();
050  /**
051   * Method to retrieve {@link org.apache.hadoop.hbase.procedure.ProcedureCoordinatorRpcs}
052   */
053  ProcedureCoordinatorRpcs getProcedureCoordinatorRpcs(String procType, String coordNode)
054      throws IOException;
055
056  /**
057   * Method to retrieve {@link org.apache.hadoop.hbase.procedure.ProcedureMemberRpcs}
058   */
059  ProcedureMemberRpcs getProcedureMemberRpcs(String procType) throws KeeperException;
060
061}