/**
* 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.junit.Assert.*;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.zookeeper.AsyncCallback.VoidCallback;
import org.apache.zookeeper.ZooDefs.Ids;
import org.apache.zookeeper.cli.LsCommand;
import org.apache.zookeeper.data.Stat;
import org.apache.zookeeper.test.ClientBase;
import org.junit.Assert;
import org.junit.Test;
/**
*
* Testing Zookeeper public methods
*
*/
public class ZooKeeperTest extends ClientBase {
@Test
public void testDeleteRecursive() throws IOException, InterruptedException,
KeeperException {
final ZooKeeper zk = createClient();
// making sure setdata works on /
zk.setData("/", "some".getBytes(), -1);
zk.create("/a", "some".getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
zk.create("/a/b", "some".getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
zk.create("/a/b/v", "some".getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
zk.create("/a/b/v/1", "some".getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
zk.create("/a/c", "some".getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
zk.create("/a/c/v", "some".getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
List<String> children = zk.getChildren("/a", false);
Assert.assertEquals("2 children - b & c should be present ", children
.size(), 2);
Assert.assertTrue(children.contains("b"));
Assert.assertTrue(children.contains("c"));
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
// 'rmr' is deprecated, so the test here is just for backwards
// compatibility.
String cmdstring0 = "rmr /a/b/v";
String cmdstring1 = "deleteall /a";
zkMain.cl.parseCommand(cmdstring0);
Assert.assertFalse(zkMain.processZKCmd(zkMain.cl));
Assert.assertEquals(null, zk.exists("/a/b/v", null));
zkMain.cl.parseCommand(cmdstring1);
Assert.assertFalse(zkMain.processZKCmd(zkMain.cl));
Assert.assertNull(zk.exists("/a", null));
}
@Test
public void testDeleteRecursiveAsync() throws IOException,
InterruptedException, KeeperException {
final ZooKeeper zk = createClient();
// making sure setdata works on /
zk.setData("/", "some".getBytes(), -1);
zk.create("/a", "some".getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
zk.create("/a/b", "some".getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
zk.create("/a/b/v", "some".getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
zk.create("/a/b/v/1", "some".getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
zk.create("/a/c", "some".getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
zk.create("/a/c/v", "some".getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
for (int i = 0; i < 50; ++i) {
zk.create("/a/c/" + i, "some".getBytes(), Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
}
List<String> children = zk.getChildren("/a", false);
Assert.assertEquals("2 children - b & c should be present ", children
.size(), 2);
Assert.assertTrue(children.contains("b"));
Assert.assertTrue(children.contains("c"));
VoidCallback cb = new VoidCallback() {
@Override
public void processResult(int rc, String path, Object ctx) {
synchronized (ctx) {
((AtomicInteger) ctx).set(4);
ctx.notify();
}
}
};
final AtomicInteger ctx = new AtomicInteger(3);
ZKUtil.deleteRecursive(zk, "/a", cb, ctx);
synchronized (ctx) {
ctx.wait();
}
Assert.assertEquals(4, ((AtomicInteger) ctx).get());
}
@Test
public void testStatWhenPathDoesNotExist() throws IOException,
InterruptedException {
final ZooKeeper zk = createClient();
ZooKeeperMain main = new ZooKeeperMain(zk);
String cmdstring = "stat /invalidPath";
main.cl.parseCommand(cmdstring);
try {
main.processZKCmd(main.cl);
Assert.fail("As Node does not exist, command should fail by throwing No Node Exception.");
} catch (KeeperException e) {
Assert.assertEquals("KeeperErrorCode = NoNode for /invalidPath", e.getMessage());
}
}
@Test
public void testParseWithExtraSpaces() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
String cmdstring = " ls / ";
zkMain.cl.parseCommand(cmdstring);
Assert.assertEquals("Spaces also considered as characters", zkMain.cl.getNumArguments(), 2);
Assert.assertEquals("ls is not taken as first argument", zkMain.cl.getCmdArgument(0), "ls");
Assert.assertEquals("/ is not taken as second argument", zkMain.cl.getCmdArgument(1), "/");
}
@Test
public void testInvalidCommand() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
String cmdstring = "cret -s /node1";
zkMain.cl.parseCommand(cmdstring);
Assert.assertFalse("Doesn't validate the command", zkMain
.processZKCmd(zkMain.cl));
}
@Test
public void testCreateCommandWithoutPath() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
String cmdstring = "create ";
zkMain.cl.parseCommand(cmdstring);
Assert.assertFalse("Path is not validated.", zkMain
.processZKCmd(zkMain.cl));
// create ephemeral
cmdstring = "create -e ";
zkMain.cl.parseCommand(cmdstring);
Assert.assertFalse("Path is not validated.", zkMain
.processZKCmd(zkMain.cl));
// create sequential
cmdstring = "create -s ";
zkMain.cl.parseCommand(cmdstring);
Assert.assertFalse("Path is not validated.", zkMain
.processZKCmd(zkMain.cl));
// create ephemeral sequential
cmdstring = "create -s -e ";
zkMain.cl.parseCommand(cmdstring);
Assert.assertFalse("Path is not validated.", zkMain
.processZKCmd(zkMain.cl));
}
@Test
public void testCreateNodeWithoutData() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
// create persistent sequential node
String cmdstring = "create -s /node ";
zkMain.cl.parseCommand(cmdstring);
Assert.assertTrue("Doesn't create node without data", zkMain
.processZKCmd(zkMain.cl));
// create ephemeral node
cmdstring = "create -e /node ";
zkMain.cl.parseCommand(cmdstring);
Assert.assertTrue("Doesn't create node without data", zkMain
.processZKCmd(zkMain.cl));
// create ephemeral sequential node
cmdstring = "create -s -e /node ";
zkMain.cl.parseCommand(cmdstring);
Assert.assertTrue("Doesn't create node without data", zkMain
.processZKCmd(zkMain.cl));
// creating ephemeral with wrong option.
cmdstring = "create -s y /node";
zkMain.cl.parseCommand(cmdstring);
try {
Assert.assertTrue("Created node with wrong option", zkMain
.processZKCmd(zkMain.cl));
Assert.fail("Created the node with wrong option should "
+ "throw Exception.");
} catch (IllegalArgumentException e) {
Assert.assertEquals("Path must start with / character", e
.getMessage());
}
}
@Test
public void testACLWithExtraAgruments() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
// create persistent sequential node
String cmdstring = "create -s /l data ip:10.18.52.144:cdrwa f g h";
zkMain.cl.parseCommand(cmdstring);
Assert.assertTrue(
"Not considering the extra arguments after the acls.", zkMain
.processZKCmd(zkMain.cl));
}
@Test
public void testCreatePersistentNode() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
String cmdstring = "create /node2";
zkMain.cl.parseCommand(cmdstring);
Assert.assertTrue("Not creating Persistent node.", zkMain
.processZKCmd(zkMain.cl));
}
@Test
public void testDelete() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
String cmdstring1 = "create -e /node2 data";
String cmdstring2 = "delete /node2";
String cmdstring3 = "ls /node2";
zkMain.cl.parseCommand(cmdstring1);
Assert.assertTrue(zkMain.processZKCmd(zkMain.cl));
zkMain.cl.parseCommand(cmdstring2);
Assert.assertFalse(zkMain.processZKCmd(zkMain.cl));
zkMain.cl.parseCommand(cmdstring3);
Assert.assertFalse("", zkMain.processCmd(zkMain.cl));
}
@Test
public void testStatCommand() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
String cmdstring1 = "create -e /node3 data";
String cmdstring2 = "stat /node3";
String cmdstring3 = "delete /node3";
zkMain.cl.parseCommand(cmdstring1);
Assert.assertTrue(zkMain.processZKCmd(zkMain.cl));
zkMain.cl.parseCommand(cmdstring2);
Assert.assertFalse(zkMain.processZKCmd(zkMain.cl));
zkMain.cl.parseCommand(cmdstring3);
Assert.assertFalse(zkMain.processZKCmd(zkMain.cl));
}
@Test
public void testInvalidStatCommand() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
// node doesn't exists
String cmdstring1 = "stat /node123";
zkMain.cl.parseCommand(cmdstring1);
try {
Assert.assertFalse(zkMain.processZKCmd(zkMain.cl));
Assert.fail("Path doesn't exists so, command should fail.");
} catch (KeeperException e) {
Assert.assertEquals(KeeperException.Code.NONODE, e.code());
}
}
@Test
public void testSetData() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
String cmdstring1 = "create -e /node4 data";
String cmdstring2 = "set /node4 " + "data";
String cmdstring3 = "delete /node4";
Stat stat = new Stat();
int version = 0;
zkMain.cl.parseCommand(cmdstring1);
Assert.assertTrue(zkMain.processZKCmd(zkMain.cl));
stat = zk.exists("/node4", true);
version = stat.getVersion();
zkMain.cl.parseCommand(cmdstring2);
Assert.assertFalse(zkMain.processZKCmd(zkMain.cl));
stat = zk.exists("/node4", true);
Assert.assertEquals(version + 1, stat.getVersion());
zkMain.cl.parseCommand(cmdstring3);
Assert.assertFalse(zkMain.processZKCmd(zkMain.cl));
}
@Test
public void testCheckInvalidAcls() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
String cmdstring = "create -s -e /node data ip:scheme:gggsd"; //invalid acl's
try{
zkMain.executeLine(cmdstring);
}catch(KeeperException.InvalidACLException e){
fail("For Invalid ACls should not throw exception");
}
}
@Test
public void testDeleteWithInvalidVersionNo() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
String cmdstring = "create -s -e /node1 data ";
String cmdstring1 = "delete /node1 2";//invalid dataversion no
zkMain.executeLine(cmdstring);
try{
zkMain.executeLine(cmdstring1);
}catch(KeeperException.BadVersionException e){
fail("For Invalid dataversion number should not throw exception");
}
}
@Test
public void testCliCommandsNotEchoingUsage() throws Exception {
// setup redirect out/err streams to get System.in/err, use this judiciously!
final PrintStream systemErr = System.err; // get current err
final ByteArrayOutputStream errContent = new ByteArrayOutputStream();
System.setErr(new PrintStream(errContent));
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
String cmd1 = "printwatches";
zkMain.executeLine(cmd1);
String cmd2 = "history";
zkMain.executeLine(cmd2);
String cmd3 = "redo";
zkMain.executeLine(cmd3);
// revert redirect of out/err streams - important step!
System.setErr(systemErr);
if (errContent.toString().contains("ZooKeeper -server host:port cmd args")) {
fail("CLI commands (history, redo, connect, printwatches) display usage info!");
}
}
@Test
public void testSortedLs() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
zkMain.executeLine("create /aa1");
zkMain.executeLine("create /aa2");
zkMain.executeLine("create /aa3");
zkMain.executeLine("create /test1");
zkMain.executeLine("create /zk1");
// call ls and put result in byteStream
ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
PrintStream out = new PrintStream(byteStream);
String lsCmd = "ls /";
LsCommand entity = new LsCommand();
entity.setZk(zk);
entity.setOut(out);
entity.parse(lsCmd.split(" ")).exec();
String result = byteStream.toString();
assertTrue(result, result.contains("[aa1, aa2, aa3, test1, zk1, zookeeper]"));
}
}