/**
* 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 com.thinkaurelius.titan.diskstorage.hbase;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import static org.testng.Assert.fail;
import java.util.concurrent.TimeUnit;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import com.thinkaurelius.titan.diskstorage.BackendException;
import com.thinkaurelius.titan.diskstorage.EntryMetaData;
import com.thinkaurelius.titan.diskstorage.StaticBuffer;
import com.thinkaurelius.titan.diskstorage.configuration.Configuration;
import com.thinkaurelius.titan.diskstorage.locking.LocalLockMediator;
import com.thinkaurelius.titan.diskstorage.locking.PermanentLockingException;
import com.thinkaurelius.titan.diskstorage.util.KeyColumn;
import com.thinkaurelius.titan.diskstorage.util.time.StandardDuration;
import com.thinkaurelius.titan.diskstorage.util.time.Timepoint;
import com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration;
public class HBaseKeyColumnValueStoreTest {
@Mock
HBaseStoreManager storeManager;
@Mock
ConnectionMask connectionMask;
@Mock
LocalLockMediator localLockMediator;
@Mock
StaticBuffer key;
@Mock
StaticBuffer column;
@Mock
StaticBuffer expectedValue;
@Mock
HBaseTransaction transaction;
@Mock
Configuration storageConfig;
@BeforeMethod
public void setup() {
MockitoAnnotations.initMocks(this);
}
@Test
public void shouldSucceedInLockingIfLockMediatorSucceeds() throws BackendException {
when(storeManager.getMetaDataSchema("hbase")).thenReturn(new EntryMetaData[] {EntryMetaData.TIMESTAMP});
when(storeManager.getStorageConfig()).thenReturn(storageConfig);
when(storageConfig.get(GraphDatabaseConfiguration.LOCK_EXPIRE)).thenReturn(
new StandardDuration(300L, TimeUnit.MILLISECONDS));
when(storageConfig.get(GraphDatabaseConfiguration.LOCK_WAIT)).thenReturn(
new StandardDuration(10L, TimeUnit.MILLISECONDS));
when(storageConfig.get(GraphDatabaseConfiguration.LOCK_RETRY)).thenReturn(3);
KeyColumn lockID = new KeyColumn(key, column);
when(localLockMediator.lock(eq(lockID), eq(transaction), any(Timepoint.class))).
thenReturn(true);
HBaseKeyColumnValueStore hBaseKeyColumnValueStore =
new HBaseKeyColumnValueStore(storeManager, connectionMask, "titan", "e", "hbase", localLockMediator);
hBaseKeyColumnValueStore.acquireLock(key, column, expectedValue, transaction);
verify(transaction).updateLocks(lockID, expectedValue);
verify(localLockMediator, times(1)).lock(eq(lockID), eq(transaction), any(Timepoint.class));
}
@Test
public void shouldRetryRightNumberOfTimesIfLockMediationFails() throws BackendException {
when(storeManager.getMetaDataSchema("hbase")).thenReturn(new EntryMetaData[] {EntryMetaData.TIMESTAMP});
when(storeManager.getStorageConfig()).thenReturn(storageConfig);
when(storageConfig.get(GraphDatabaseConfiguration.LOCK_EXPIRE)).thenReturn(
new StandardDuration(300L, TimeUnit.MILLISECONDS));
when(storageConfig.get(GraphDatabaseConfiguration.LOCK_WAIT)).thenReturn(
new StandardDuration(10L, TimeUnit.MILLISECONDS));
when(storageConfig.get(GraphDatabaseConfiguration.LOCK_RETRY)).thenReturn(3);
KeyColumn lockID = new KeyColumn(key, column);
when(localLockMediator.lock(eq(lockID), eq(transaction), any(Timepoint.class))).
thenReturn(false).thenReturn(false).thenReturn(true);
HBaseKeyColumnValueStore hBaseKeyColumnValueStore =
new HBaseKeyColumnValueStore(storeManager, connectionMask, "titan", "e", "hbase", localLockMediator);
hBaseKeyColumnValueStore.acquireLock(key, column, expectedValue, transaction);
verify(transaction).updateLocks(lockID, expectedValue);
verify(localLockMediator, times(3)).lock(eq(lockID), eq(transaction), any(Timepoint.class));
}
@Test(expectedExceptions = PermanentLockingException.class)
public void shouldThrowExceptionAfterConfiguredRetriesIfLockMediationFails() throws BackendException {
when(storeManager.getMetaDataSchema("hbase")).thenReturn(new EntryMetaData[] {EntryMetaData.TIMESTAMP});
when(storeManager.getStorageConfig()).thenReturn(storageConfig);
when(storageConfig.get(GraphDatabaseConfiguration.LOCK_EXPIRE)).thenReturn(
new StandardDuration(300L, TimeUnit.MILLISECONDS));
when(storageConfig.get(GraphDatabaseConfiguration.LOCK_WAIT)).thenReturn(
new StandardDuration(10L, TimeUnit.MILLISECONDS));
when(storageConfig.get(GraphDatabaseConfiguration.LOCK_RETRY)).thenReturn(3);
KeyColumn lockID = new KeyColumn(key, column);
when(localLockMediator.lock(eq(lockID), eq(transaction), any(Timepoint.class))).
thenReturn(false).thenReturn(false).thenReturn(false);
HBaseKeyColumnValueStore hBaseKeyColumnValueStore =
new HBaseKeyColumnValueStore(storeManager, connectionMask, "titan", "e", "hbase", localLockMediator);
hBaseKeyColumnValueStore.acquireLock(key, column, expectedValue, transaction);
fail("Should fail as lock could not be acquired after 3 retries.");
}
}