/**
* 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.ArrayList;
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.*;
import org.apache.zookeeper.common.StringUtils;
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 {
private static final String LINE_SEPARATOR = System.getProperty("line.separator", "\n");
@Test
public void testDeleteRecursive() throws IOException, InterruptedException, CliException, 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, MalformedCommandException {
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 (CliException e) {
Assert.assertEquals("Node does not exist: /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 testParseWithQuotes() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
for (String quoteChar : new String[] {"'", "\""}) {
String cmdstring = String.format("create /node %1$squoted data%1$s", quoteChar);
zkMain.cl.parseCommand(cmdstring);
Assert.assertEquals("quotes combine arguments", zkMain.cl.getNumArguments(), 3);
Assert.assertEquals("create is not taken as first argument", zkMain.cl.getCmdArgument(0), "create");
Assert.assertEquals("/node is not taken as second argument", zkMain.cl.getCmdArgument(1), "/node");
Assert.assertEquals("quoted data is not taken as third argument", zkMain.cl.getCmdArgument(2), "quoted data");
}
}
@Test
public void testParseWithMixedQuotes() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
for (String[] quoteChars : new String[][] {{"'", "\""}, {"\"", "'"}}) {
String outerQuotes = quoteChars[0];
String innerQuotes = quoteChars[1];
String cmdstring = String.format("create /node %1$s%2$squoted data%2$s%1$s", outerQuotes, innerQuotes);
zkMain.cl.parseCommand(cmdstring);
Assert.assertEquals("quotes combine arguments", zkMain.cl.getNumArguments(), 3);
Assert.assertEquals("create is not taken as first argument", zkMain.cl.getCmdArgument(0), "create");
Assert.assertEquals("/node is not taken as second argument", zkMain.cl.getCmdArgument(1), "/node");
Assert.assertEquals("quoted data is not taken as third argument", zkMain.cl.getCmdArgument(2), innerQuotes + "quoted data" + innerQuotes);
}
}
@Test
public void testParseWithEmptyQuotes() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
String cmdstring = "create /node ''";
zkMain.cl.parseCommand(cmdstring);
Assert.assertEquals("empty quotes should produce arguments", zkMain.cl.getNumArguments(), 3);
Assert.assertEquals("create is not taken as first argument", zkMain.cl.getCmdArgument(0), "create");
Assert.assertEquals("/node is not taken as second argument", zkMain.cl.getCmdArgument(1), "/node");
Assert.assertEquals("empty string is not taken as third argument", zkMain.cl.getCmdArgument(2), "");
}
@Test
public void testParseWithMultipleQuotes() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
String cmdstring = "create /node '' ''";
zkMain.cl.parseCommand(cmdstring);
Assert.assertEquals("expected 5 arguments", zkMain.cl.getNumArguments(), 4);
Assert.assertEquals("create is not taken as first argument", zkMain.cl.getCmdArgument(0), "create");
Assert.assertEquals("/node is not taken as second argument", zkMain.cl.getCmdArgument(1), "/node");
Assert.assertEquals("empty string is not taken as third argument", zkMain.cl.getCmdArgument(2), "");
Assert.assertEquals("empty string is not taken as fourth argument", zkMain.cl.getCmdArgument(3), "");
}
@Test
public void testNonexistantCommand() throws Exception {
testInvalidCommand("cret -s /node1", 127);
}
@Test
public void testCreateCommandWithoutPath() throws Exception {
testInvalidCommand("create", 1);
}
@Test
public void testCreateEphemeralCommandWithoutPath() throws Exception {
testInvalidCommand("create -e ", 1);
}
@Test
public void testCreateSequentialCommandWithoutPath() throws Exception {
testInvalidCommand("create -s ", 1);
}
@Test
public void testCreateEphemeralSequentialCommandWithoutPath() throws Exception {
testInvalidCommand("create -s -e ", 1);
}
private void testInvalidCommand(String cmdString, int exitCode) throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
zkMain.cl.parseCommand(cmdString);
// Verify that the exit code is set properly
zkMain.processCmd(zkMain.cl);
Assert.assertEquals(exitCode, zkMain.exitCode);
// Verify that the correct exception is thrown
try {
zkMain.processZKCmd(zkMain.cl);
Assert.fail();
} catch (CliException e) {
return;
}
Assert.fail("invalid command should throw CliException");
}
@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 testDeleteNonexistantNode() throws Exception {
testInvalidCommand("delete /blahblahblah", 1);
}
@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 (CliWrapperException e) {
Assert.assertEquals(KeeperException.Code.NONODE, ((KeeperException)e.getCause()).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
// For Invalid ACls should not throw exception
zkMain.executeLine(cmdstring);
}
@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);
// For Invalid dataversion number should not throw exception
zkMain.executeLine(cmdstring1);
}
@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!");
}
}
// ZOOKEEPER-2467 : Testing negative number for redo command
@Test
public void testRedoWithNegativeCmdNumber() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
String cmd1 = "redo -1";
// 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));
try {
zkMain.executeLine(cmd1);
Assert.assertEquals("Command index out of range", errContent
.toString().trim());
} finally {
// revert redirect of out/err streams - important step!
System.setErr(systemErr);
}
}
private static void runCommandExpect(CliCommand command, List<String> expectedResults)
throws Exception {
// call command and put result in byteStream
ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
PrintStream out = new PrintStream(byteStream);
command.setOut(out);
command.exec();
String result = byteStream.toString();
assertTrue(result, result.contains(
StringUtils.joinStrings(expectedResults, LINE_SEPARATOR)));
}
@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");
LsCommand cmd = new LsCommand();
cmd.setZk(zk);
cmd.parse("ls /".split(" "));
List<String> expected = new ArrayList<String>();
expected.add("[aa1, aa2, aa3, test1, zk1, zookeeper]");
runCommandExpect(cmd, expected);
}
@Test
public void testLsrCommand() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
zkMain.executeLine("create /a");
zkMain.executeLine("create /a/b");
zkMain.executeLine("create /a/c");
zkMain.executeLine("create /a/b/d");
zkMain.executeLine("create /a/c/e");
zkMain.executeLine("create /a/f");
LsCommand cmd = new LsCommand();
cmd.setZk(zk);
cmd.parse("ls -R /a".split(" "));
List<String> expected = new ArrayList<String>();
expected.add("/a");
expected.add("/a/b");
expected.add("/a/c");
expected.add("/a/f");
expected.add("/a/b/d");
expected.add("/a/c/e");
runCommandExpect(cmd, expected);
}
@Test
public void testLsrRootCommand() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
LsCommand cmd = new LsCommand();
cmd.setZk(zk);
cmd.parse("ls -R /".split(" "));
List<String> expected = new ArrayList<String>();
expected.add("/");
expected.add("/zookeeper");
runCommandExpect(cmd, expected);
}
@Test
public void testLsrLeafCommand() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
zkMain.executeLine("create /b");
zkMain.executeLine("create /b/c");
LsCommand cmd = new LsCommand();
cmd.setZk(zk);
cmd.parse("ls -R /b/c".split(" "));
List<String> expected = new ArrayList<String>();
expected.add("/b/c");
runCommandExpect(cmd, expected);
}
@Test
public void testLsrNonexistantZnodeCommand() throws Exception {
final ZooKeeper zk = createClient();
ZooKeeperMain zkMain = new ZooKeeperMain(zk);
zkMain.executeLine("create /b");
zkMain.executeLine("create /b/c");
LsCommand cmd = new LsCommand();
cmd.setZk(zk);
cmd.parse("ls -R /b/c/d".split(" "));
try {
runCommandExpect(cmd, new ArrayList<String>());
Assert.fail("Path doesn't exists so, command should fail.");
} catch (CliWrapperException e) {
Assert.assertEquals(KeeperException.Code.NONODE, ((KeeperException)e.getCause()).code());
}
}
}