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/*
* 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.zookeeper.test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.zookeeper.AsyncCallback.MultiCallback;
import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.Op;
import org.apache.zookeeper.OpResult;
import org.apache.zookeeper.OpResult.CreateResult;
import org.apache.zookeeper.OpResult.ErrorResult;
import org.apache.zookeeper.ZooDefs.Ids;
import org.apache.zookeeper.ZooKeeper;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
public class MultiAsyncTransactionTest extends ClientBase {
private ZooKeeper zk;
private final AtomicInteger pendingOps = new AtomicInteger(0);
@BeforeEach
public void setUp() throws Exception {
super.setUp();
zk = createClient();
pendingOps.set(0);
}
private static class MultiResult {
int rc;
List<OpResult> results;
}
private void finishPendingOps() {
if (pendingOps.decrementAndGet() == 0) {
synchronized (pendingOps) {
pendingOps.notifyAll();
}
}
}
private void waitForPendingOps(int timeout) throws Exception {
synchronized (pendingOps) {
while (pendingOps.get() > 0) {
pendingOps.wait(timeout);
}
}
}
/**
* ZOOKEEPER-1624: PendingChanges of create sequential node request didn't
* get rollbacked correctly when multi-op failed. This cause
* create sequential node request in subsequent multi-op to failed because
* sequential node name generation is incorrect.
*
* The check is to make sure that each request in multi-op failed with
* the correct reason.
*/
@Test
public void testSequentialNodeCreateInAsyncMulti() throws Exception {
final int iteration = 4;
final List<MultiResult> results = new ArrayList<MultiResult>();
pendingOps.set(iteration);
List<Op> ops = Arrays.asList(Op.create("/node-", new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT_SEQUENTIAL), Op.create("/dup", new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT));
for (int i = 0; i < iteration; ++i) {
zk.multi(ops, new MultiCallback() {
@Override
public void processResult(int rc, String path, Object ctx, List<OpResult> opResults) {
MultiResult result = new MultiResult();
result.results = opResults;
result.rc = rc;
results.add(result);
finishPendingOps();
}
}, null);
}
waitForPendingOps(CONNECTION_TIMEOUT);
// Check that return code of all request are correct
assertEquals(KeeperException.Code.OK.intValue(), results.get(0).rc);
assertEquals(KeeperException.Code.NODEEXISTS.intValue(), results.get(1).rc);
assertEquals(KeeperException.Code.NODEEXISTS.intValue(), results.get(2).rc);
assertEquals(KeeperException.Code.NODEEXISTS.intValue(), results.get(3).rc);
// Check that the first operation is successful in all request
assertTrue(results.get(0).results.get(0) instanceof CreateResult);
assertEquals(KeeperException.Code.OK.intValue(), ((ErrorResult) results.get(1).results.get(0)).getErr());
assertEquals(KeeperException.Code.OK.intValue(), ((ErrorResult) results.get(2).results.get(0)).getErr());
assertEquals(KeeperException.Code.OK.intValue(), ((ErrorResult) results.get(3).results.get(0)).getErr());
// Check that the second operation failed after the first request
assertEquals(KeeperException.Code.NODEEXISTS.intValue(), ((ErrorResult) results.get(1).results.get(1)).getErr());
assertEquals(KeeperException.Code.NODEEXISTS.intValue(), ((ErrorResult) results.get(2).results.get(1)).getErr());
assertEquals(KeeperException.Code.NODEEXISTS.intValue(), ((ErrorResult) results.get(3).results.get(1)).getErr());
}
}
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