/**
* 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.procedure2;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.HBaseCommonTestingUtility;
import org.apache.hadoop.hbase.ProcedureInfo;
import org.apache.hadoop.hbase.procedure2.store.ProcedureStore;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.apache.hadoop.hbase.testclassification.MasterTests;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
@Category({MasterTests.class, SmallTests.class})
public class TestChildProcedures {
private static final Log LOG = LogFactory.getLog(TestChildProcedures.class);
private static final int PROCEDURE_EXECUTOR_SLOTS = 1;
private static TestProcEnv procEnv;
private static ProcedureExecutor<TestProcEnv> procExecutor;
private static ProcedureStore procStore;
private HBaseCommonTestingUtility htu;
private FileSystem fs;
private Path testDir;
private Path logDir;
@Before
public void setUp() throws IOException {
htu = new HBaseCommonTestingUtility();
testDir = htu.getDataTestDir();
fs = testDir.getFileSystem(htu.getConfiguration());
assertTrue(testDir.depth() > 1);
logDir = new Path(testDir, "proc-logs");
procEnv = new TestProcEnv();
procStore = ProcedureTestingUtility.createStore(htu.getConfiguration(), fs, logDir);
procExecutor = new ProcedureExecutor(htu.getConfiguration(), procEnv, procStore);
procExecutor.testing = new ProcedureExecutor.Testing();
procStore.start(PROCEDURE_EXECUTOR_SLOTS);
procExecutor.start(PROCEDURE_EXECUTOR_SLOTS, true);
}
@After
public void tearDown() throws IOException {
procExecutor.stop();
procStore.stop(false);
fs.delete(logDir, true);
}
@Test
public void testChildLoad() throws Exception {
procEnv.toggleKillBeforeStoreUpdate = false;
TestRootProcedure proc = new TestRootProcedure();
long procId = ProcedureTestingUtility.submitAndWait(procExecutor, proc);
ProcedureTestingUtility.restart(procExecutor);
ProcedureTestingUtility.waitProcedure(procExecutor, proc);
assertTrue("expected completed proc", procExecutor.isFinished(procId));
ProcedureTestingUtility.assertProcNotFailed(procExecutor, procId);
}
@Test
public void testChildLoadWithSteppedRestart() throws Exception {
procEnv.toggleKillBeforeStoreUpdate = true;
TestRootProcedure proc = new TestRootProcedure();
long procId = ProcedureTestingUtility.submitAndWait(procExecutor, proc);
int restartCount = 0;
while (!procExecutor.isFinished(procId)) {
ProcedureTestingUtility.restart(procExecutor);
ProcedureTestingUtility.waitProcedure(procExecutor, proc);
restartCount++;
}
assertEquals(3, restartCount);
assertTrue("expected completed proc", procExecutor.isFinished(procId));
ProcedureTestingUtility.assertProcNotFailed(procExecutor, procId);
}
@Test
public void testChildRollbackLoad() throws Exception {
procEnv.toggleKillBeforeStoreUpdate = false;
procEnv.triggerRollbackOnChild = true;
TestRootProcedure proc = new TestRootProcedure();
long procId = ProcedureTestingUtility.submitAndWait(procExecutor, proc);
ProcedureTestingUtility.restart(procExecutor);
ProcedureTestingUtility.waitProcedure(procExecutor, proc);
assertProcFailed(procId);
}
@Test
public void testChildRollbackLoadWithSteppedRestart() throws Exception {
procEnv.toggleKillBeforeStoreUpdate = true;
procEnv.triggerRollbackOnChild = true;
TestRootProcedure proc = new TestRootProcedure();
long procId = ProcedureTestingUtility.submitAndWait(procExecutor, proc);
int restartCount = 0;
while (!procExecutor.isFinished(procId)) {
ProcedureTestingUtility.restart(procExecutor);
ProcedureTestingUtility.waitProcedure(procExecutor, proc);
restartCount++;
}
assertEquals(2, restartCount);
assertProcFailed(procId);
}
private void assertProcFailed(long procId) {
assertTrue("expected completed proc", procExecutor.isFinished(procId));
ProcedureInfo result = procExecutor.getResult(procId);
assertEquals(true, result.isFailed());
LOG.info(result.getException().getMessage());
}
public static class TestRootProcedure extends SequentialProcedure<TestProcEnv> {
public TestRootProcedure() {}
public Procedure[] execute(TestProcEnv env) {
if (env.toggleKillBeforeStoreUpdate) {
ProcedureTestingUtility.toggleKillBeforeStoreUpdate(procExecutor);
}
return new Procedure[] { new TestChildProcedure(), new TestChildProcedure() };
}
public void rollback(TestProcEnv env) {
}
@Override
public boolean abort(TestProcEnv env) {
return false;
}
}
public static class TestChildProcedure extends SequentialProcedure<TestProcEnv> {
public TestChildProcedure() {}
public Procedure[] execute(TestProcEnv env) {
if (env.toggleKillBeforeStoreUpdate) {
ProcedureTestingUtility.toggleKillBeforeStoreUpdate(procExecutor);
}
if (env.triggerRollbackOnChild) {
setFailure("test", new Exception("test"));
}
return null;
}
public void rollback(TestProcEnv env) {
}
@Override
public boolean abort(TestProcEnv env) {
return false;
}
}
private static class TestProcEnv {
public boolean toggleKillBeforeStoreUpdate = false;
public boolean triggerRollbackOnChild = false;
}
}