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.master;
19  
20  import org.apache.hadoop.hbase.master.AssignmentManager.RegionState;
21  
22  /**
23   * Package scoped mocking utility.
24   */
25  public class Mocking {
26  
27    static void waitForRegionPendingOpenInRIT(AssignmentManager am, String encodedName)
28      throws InterruptedException {
29      // We used to do a check like this:
30      //!Mocking.verifyRegionState(this.watcher, REGIONINFO, EventType.M_ZK_REGION_OFFLINE)) {
31      // There is a race condition with this: because we may do the transition to
32      // RS_ZK_REGION_OPENING before the RIT is internally updated. We need to wait for the
33      // RIT to be as we need it to be instead. This cannot happen in a real cluster as we
34      // update the RIT before sending the openRegion request.
35  
36      boolean wait = true;
37      while (wait) {
38        RegionState state = am.getRegionsInTransition().get(encodedName);
39        if (state != null && state.isPendingOpen()){
40          wait = false;
41        } else {
42          Thread.sleep(1);
43        }
44      }
45    }
46  
47    static void waitForRegionOfflineInRIT(AssignmentManager am, String encodedName)
48        throws InterruptedException {
49      boolean wait = true;
50      while (wait) {
51        RegionState state = am.getRegionsInTransition().get(encodedName);
52        if (state != null && state.isOffline()) {
53          wait = false;
54        } else {
55          Thread.sleep(1);
56        }
57      }
58    }
59  }