1 /**
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.apache.hadoop.hbase.coordination;
19
20 import java.io.IOException;
21
22 import org.apache.hadoop.hbase.classification.InterfaceAudience;
23 import org.apache.hadoop.hbase.CoordinatedStateException;
24 import org.apache.hadoop.hbase.CoordinatedStateManager;
25 import org.apache.hadoop.hbase.Server;
26 import org.apache.hadoop.hbase.TableStateManager;
27 import org.apache.hadoop.hbase.procedure.ProcedureCoordinatorRpcs;
28 import org.apache.hadoop.hbase.procedure.ProcedureMemberRpcs;
29
30 /**
31 * Base class for {@link org.apache.hadoop.hbase.CoordinatedStateManager} implementations.
32 * Defines methods to retrieve coordination objects for relevant areas. CoordinatedStateManager
33 * reference returned from Server interface has to be casted to this type to
34 * access those methods.
35 */
36 @InterfaceAudience.Private
37 public abstract class BaseCoordinatedStateManager implements CoordinatedStateManager {
38
39 @Override
40 public void initialize(Server server) {
41 }
42
43 @Override
44 public void start() {
45 }
46
47 @Override
48 public void stop() {
49 }
50
51 @Override
52 public Server getServer() {
53 return null;
54 }
55
56 @Override
57 public abstract TableStateManager getTableStateManager() throws InterruptedException,
58 CoordinatedStateException;
59 /**
60 * Method to retrieve coordination for split log worker
61 */
62 public abstract SplitLogWorkerCoordination getSplitLogWorkerCoordination();
63 /**
64 * Method to retrieve coordination for split log manager
65 */
66 public abstract SplitLogManagerCoordination getSplitLogManagerCoordination();
67 /**
68 * Method to retrieve coordination for split transaction.
69 */
70 abstract public SplitTransactionCoordination getSplitTransactionCoordination();
71
72 /**
73 * Method to retrieve coordination for closing region operations.
74 */
75 public abstract CloseRegionCoordination getCloseRegionCoordination();
76
77 /**
78 * Method to retrieve coordination for opening region operations.
79 */
80 public abstract OpenRegionCoordination getOpenRegionCoordination();
81
82 /**
83 * Method to retrieve coordination for region merge transaction
84 */
85 public abstract RegionMergeCoordination getRegionMergeCoordination();
86
87 /**
88 * Method to retrieve {@link org.apache.hadoop.hbase.procedure.ProcedureCoordinatorRpcs}
89 */
90 public abstract ProcedureCoordinatorRpcs
91 getProcedureCoordinatorRpcs(String procType, String coordNode) throws IOException;
92
93 /**
94 * Method to retrieve {@link org.apache.hadoop.hbase.procedure.ProcedureMemberRpc}
95 */
96 public abstract ProcedureMemberRpcs
97 getProcedureMemberRpcs(String procType) throws IOException;
98 }