| /** |
| * 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 org.apache.hadoop.hbase.snapshot; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.io.IOException; |
| import java.util.Optional; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.TableNameTestRule; |
| import org.apache.hadoop.hbase.client.SnapshotDescription; |
| import org.apache.hadoop.hbase.client.TableDescriptor; |
| import org.apache.hadoop.hbase.coprocessor.CoprocessorHost; |
| import org.apache.hadoop.hbase.coprocessor.MasterCoprocessor; |
| import org.apache.hadoop.hbase.coprocessor.MasterCoprocessorEnvironment; |
| import org.apache.hadoop.hbase.coprocessor.MasterObserver; |
| import org.apache.hadoop.hbase.coprocessor.ObserverContext; |
| import org.apache.hadoop.hbase.testclassification.MediumTests; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.ClassRule; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| @Category({ MediumTests.class }) |
| public class TestSnapshotClientRetries { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestSnapshotClientRetries.class); |
| |
| private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); |
| private static final Logger LOG = LoggerFactory.getLogger(TestSnapshotClientRetries.class); |
| |
| @Rule public TableNameTestRule testTable = new TableNameTestRule(); |
| |
| @Before |
| public void setUp() throws Exception { |
| TEST_UTIL.getConfiguration().set(CoprocessorHost.MASTER_COPROCESSOR_CONF_KEY, |
| MasterSyncObserver.class.getName()); |
| TEST_UTIL.startMiniCluster(1); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| TEST_UTIL.shutdownMiniCluster(); |
| } |
| |
| @Test(expected=SnapshotExistsException.class) |
| public void testSnapshotAlreadyExist() throws Exception { |
| final String snapshotName = "testSnapshotAlreadyExist"; |
| TEST_UTIL.createTable(testTable.getTableName(), "f"); |
| TEST_UTIL.getAdmin().snapshot(snapshotName, testTable.getTableName()); |
| snapshotAndAssertOneRetry(snapshotName, testTable.getTableName()); |
| } |
| |
| @Test(expected=SnapshotDoesNotExistException.class) |
| public void testCloneNonExistentSnapshot() throws Exception { |
| final String snapshotName = "testCloneNonExistentSnapshot"; |
| cloneAndAssertOneRetry(snapshotName, testTable.getTableName()); |
| } |
| |
| public static class MasterSyncObserver implements MasterCoprocessor, MasterObserver { |
| volatile AtomicInteger snapshotCount = null; |
| volatile AtomicInteger cloneCount = null; |
| |
| @Override |
| public Optional<MasterObserver> getMasterObserver() { |
| return Optional.of(this); |
| } |
| |
| @Override |
| public void preSnapshot(final ObserverContext<MasterCoprocessorEnvironment> ctx, |
| final SnapshotDescription snapshot, final TableDescriptor hTableDescriptor) |
| throws IOException { |
| if (snapshotCount != null) { |
| snapshotCount.incrementAndGet(); |
| } |
| } |
| |
| @Override |
| public void preCloneSnapshot(final ObserverContext<MasterCoprocessorEnvironment> ctx, |
| final SnapshotDescription snapshot, final TableDescriptor hTableDescriptor) |
| throws IOException { |
| if (cloneCount != null) { |
| cloneCount.incrementAndGet(); |
| } |
| } |
| } |
| |
| public void snapshotAndAssertOneRetry(final String snapshotName, final TableName tableName) |
| throws Exception { |
| MasterSyncObserver observer = getMasterSyncObserver(); |
| observer.snapshotCount = new AtomicInteger(0); |
| TEST_UTIL.getAdmin().snapshot(snapshotName, tableName); |
| assertEquals(1, observer.snapshotCount.get()); |
| } |
| |
| public void cloneAndAssertOneRetry(final String snapshotName, final TableName tableName) |
| throws Exception { |
| MasterSyncObserver observer = getMasterSyncObserver(); |
| observer.cloneCount = new AtomicInteger(0); |
| TEST_UTIL.getAdmin().cloneSnapshot(snapshotName, tableName); |
| assertEquals(1, observer.cloneCount.get()); |
| } |
| |
| private MasterSyncObserver getMasterSyncObserver() { |
| return (MasterSyncObserver)TEST_UTIL.getHBaseCluster().getMaster() |
| .getMasterCoprocessorHost().findCoprocessor(MasterSyncObserver.class.getName()); |
| } |
| } |