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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;
import static org.apache.zookeeper.test.ClientBase.CONNECTION_TIMEOUT;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import java.io.IOException;
import org.apache.zookeeper.ZooDefs.Ids;
import org.apache.zookeeper.client.HostProvider;
import org.apache.zookeeper.server.quorum.QuorumPeerTestBase;
import org.apache.zookeeper.test.ClientBase;
import org.apache.zookeeper.test.ClientBase.CountdownWatcher;
import org.junit.Assert;
import org.junit.Test;
public class ClientRequestTimeoutTest extends QuorumPeerTestBase {
private static final int SERVER_COUNT = 3;
private boolean dropPacket = false;
private int dropPacketType = ZooDefs.OpCode.create;
@Test(timeout = 120000)
public void testClientRequestTimeout() throws Exception {
int requestTimeOut = 15000;
System.setProperty("zookeeper.request.timeout",
Integer.toString(requestTimeOut));
final int clientPorts[] = new int[SERVER_COUNT];
StringBuilder sb = new StringBuilder();
String server;
for (int i = 0; i < SERVER_COUNT; i++) {
clientPorts[i] = PortAssignment.unique();
server = "server." + i + "=127.0.0.1:" + PortAssignment.unique()
+ ":" + PortAssignment.unique() + ":participant;127.0.0.1:"
+ clientPorts[i];
sb.append(server + "\n");
}
String currentQuorumCfgSection = sb.toString();
MainThread mt[] = new MainThread[SERVER_COUNT];
for (int i = 0; i < SERVER_COUNT; i++) {
mt[i] = new MainThread(i, clientPorts[i], currentQuorumCfgSection,
false);
mt[i].start();
}
// ensure server started
for (int i = 0; i < SERVER_COUNT; i++) {
Assert.assertTrue("waiting for server " + i + " being up",
ClientBase.waitForServerUp("127.0.0.1:" + clientPorts[i],
CONNECTION_TIMEOUT));
}
CountdownWatcher watch1 = new CountdownWatcher();
CustomZooKeeper zk = new CustomZooKeeper(getCxnString(clientPorts),
ClientBase.CONNECTION_TIMEOUT, watch1);
watch1.waitForConnected(ClientBase.CONNECTION_TIMEOUT);
String data = "originalData";
// lets see one successful operation
zk.create("/clientHang1", data.getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT_SEQUENTIAL);
// now make environment for client hang
dropPacket = true;
dropPacketType = ZooDefs.OpCode.create;
// Test synchronous API
try {
zk.create("/clientHang2", data.getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
fail("KeeperException is expected.");
} catch (KeeperException exception) {
assertEquals(KeeperException.Code.REQUESTTIMEOUT.intValue(),
exception.code().intValue());
}
// do cleanup
zk.close();
for (int i = 0; i < SERVER_COUNT; i++) {
mt[i].shutdown();
}
}
/**
* @return connection string in the form of
* 127.0.0.1:port1,127.0.0.1:port2,127.0.0.1:port3
*/
private String getCxnString(int[] clientPorts) {
StringBuffer hostPortBuffer = new StringBuffer();
for (int i = 0; i < clientPorts.length; i++) {
hostPortBuffer.append("127.0.0.1:");
hostPortBuffer.append(clientPorts[i]);
if (i != (clientPorts.length - 1)) {
hostPortBuffer.append(',');
}
}
return hostPortBuffer.toString();
}
class CustomClientCnxn extends ClientCnxn {
public CustomClientCnxn(String chrootPath, HostProvider hostProvider,
int sessionTimeout, ZooKeeper zooKeeper,
ClientWatchManager watcher, ClientCnxnSocket clientCnxnSocket,
boolean canBeReadOnly) throws IOException {
super(chrootPath, hostProvider, sessionTimeout, zooKeeper, watcher,
clientCnxnSocket, canBeReadOnly);
}
@Override
public void finishPacket(Packet p) {
if (dropPacket && p.requestHeader.getType() == dropPacketType) {
// do nothing, just return, it is the same as packet is dropped
// by the network
return;
}
super.finishPacket(p);
}
}
class CustomZooKeeper extends ZooKeeper {
public CustomZooKeeper(String connectString, int sessionTimeout,
Watcher watcher) throws IOException {
super(connectString, sessionTimeout, watcher);
}
@Override
protected ClientCnxn createConnection(String chrootPath,
HostProvider hostProvider, int sessionTimeout,
ZooKeeper zooKeeper, ClientWatchManager watcher,
ClientCnxnSocket clientCnxnSocket, boolean canBeReadOnly)
throws IOException {
return new CustomClientCnxn(chrootPath, hostProvider,
sessionTimeout, zooKeeper, watcher, clientCnxnSocket,
canBeReadOnly);
}
}
}
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