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.procedure2;
019
020import static org.junit.Assert.assertFalse;
021import static org.junit.Assert.assertTrue;
022
023import java.util.HashMap;
024import java.util.Map;
025import org.apache.hadoop.hbase.HBaseClassTestRule;
026import org.apache.hadoop.hbase.procedure2.ProcedureTestingUtility.NoopProcedure;
027import org.apache.hadoop.hbase.testclassification.MasterTests;
028import org.apache.hadoop.hbase.testclassification.SmallTests;
029import org.junit.ClassRule;
030import org.junit.Test;
031import org.junit.experimental.categories.Category;
032
033@Category({ MasterTests.class, SmallTests.class })
034public class TestLockAndQueue {
035
036  @ClassRule
037  public static final HBaseClassTestRule CLASS_RULE =
038    HBaseClassTestRule.forClass(TestLockAndQueue.class);
039
040  @Test
041  public void testHasLockAccess() {
042    Map<Long, NoopProcedure<Void>> procMap = new HashMap<>();
043    for (long i = 1; i <= 10; i++) {
044      NoopProcedure<Void> proc = new NoopProcedure<>();
045      proc.setProcId(i);
046      if (i > 1) {
047        proc.setParentProcId(i - 1);
048        proc.setRootProcId(1);
049      }
050      procMap.put(i, proc);
051    }
052    LockAndQueue laq = new LockAndQueue(procMap::get);
053    for (long i = 1; i <= 10; i++) {
054      assertFalse(laq.hasLockAccess(procMap.get(i)));
055    }
056    for (long i = 1; i <= 10; i++) {
057      NoopProcedure<Void> procHasLock = procMap.get(i);
058      laq.tryExclusiveLock(procHasLock);
059      for (long j = 1; j < i; j++) {
060        assertFalse(laq.hasLockAccess(procMap.get(j)));
061      }
062      for (long j = i; j <= 10; j++) {
063        assertTrue(laq.hasLockAccess(procMap.get(j)));
064      }
065      laq.releaseExclusiveLock(procHasLock);
066    }
067  }
068}