| /** |
| * 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.util.curator; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.apache.curator.test.TestingServer; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.CommonConfigurationKeys; |
| import org.apache.hadoop.util.ZKUtil; |
| import org.apache.zookeeper.CreateMode; |
| import org.apache.zookeeper.data.ACL; |
| import org.apache.zookeeper.data.Stat; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| /** |
| * Test the manager for ZooKeeper Curator. |
| */ |
| public class TestZKCuratorManager { |
| |
| private TestingServer server; |
| private ZKCuratorManager curator; |
| |
| @Before |
| public void setup() throws Exception { |
| this.server = new TestingServer(); |
| |
| Configuration conf = new Configuration(); |
| conf.set( |
| CommonConfigurationKeys.ZK_ADDRESS, this.server.getConnectString()); |
| |
| this.curator = new ZKCuratorManager(conf); |
| this.curator.start(); |
| } |
| |
| @After |
| public void teardown() throws Exception { |
| this.curator.close(); |
| if (this.server != null) { |
| this.server.close(); |
| this.server = null; |
| } |
| } |
| |
| @Test |
| public void testReadWriteData() throws Exception { |
| String testZNode = "/test"; |
| String expectedString = "testString"; |
| assertFalse(curator.exists(testZNode)); |
| curator.create(testZNode); |
| assertTrue(curator.exists(testZNode)); |
| curator.setData(testZNode, expectedString, -1); |
| String testString = curator.getStringData("/test"); |
| assertEquals(expectedString, testString); |
| } |
| |
| @Test |
| public void testChildren() throws Exception { |
| List<String> children = curator.getChildren("/"); |
| assertEquals(1, children.size()); |
| |
| assertFalse(curator.exists("/node1")); |
| curator.create("/node1"); |
| assertTrue(curator.exists("/node1")); |
| |
| assertFalse(curator.exists("/node2")); |
| curator.create("/node2"); |
| assertTrue(curator.exists("/node2")); |
| |
| children = curator.getChildren("/"); |
| assertEquals(3, children.size()); |
| |
| curator.delete("/node2"); |
| assertFalse(curator.exists("/node2")); |
| children = curator.getChildren("/"); |
| assertEquals(2, children.size()); |
| } |
| |
| @Test |
| public void testGetStringData() throws Exception { |
| String node1 = "/node1"; |
| String node2 = "/node2"; |
| assertFalse(curator.exists(node1)); |
| curator.create(node1); |
| assertNull(curator.getStringData(node1)); |
| |
| byte[] setData = "setData".getBytes("UTF-8"); |
| curator.setData(node1, setData, -1); |
| assertEquals("setData", curator.getStringData(node1)); |
| |
| Stat stat = new Stat(); |
| assertFalse(curator.exists(node2)); |
| curator.create(node2); |
| assertNull(curator.getStringData(node2, stat)); |
| |
| curator.setData(node2, setData, -1); |
| assertEquals("setData", curator.getStringData(node2, stat)); |
| |
| } |
| @Test |
| public void testTransaction() throws Exception { |
| List<ACL> zkAcl = ZKUtil.parseACLs(CommonConfigurationKeys.ZK_ACL_DEFAULT); |
| String fencingNodePath = "/fencing"; |
| String node1 = "/node1"; |
| String node2 = "/node2"; |
| byte[] testData = "testData".getBytes("UTF-8"); |
| assertFalse(curator.exists(fencingNodePath)); |
| assertFalse(curator.exists(node1)); |
| assertFalse(curator.exists(node2)); |
| ZKCuratorManager.SafeTransaction txn = curator.createTransaction( |
| zkAcl, fencingNodePath); |
| txn.create(node1, testData, zkAcl, CreateMode.PERSISTENT); |
| txn.create(node2, testData, zkAcl, CreateMode.PERSISTENT); |
| assertFalse(curator.exists(fencingNodePath)); |
| assertFalse(curator.exists(node1)); |
| assertFalse(curator.exists(node2)); |
| txn.commit(); |
| assertFalse(curator.exists(fencingNodePath)); |
| assertTrue(curator.exists(node1)); |
| assertTrue(curator.exists(node2)); |
| assertTrue(Arrays.equals(testData, curator.getData(node1))); |
| assertTrue(Arrays.equals(testData, curator.getData(node2))); |
| |
| byte[] setData = "setData".getBytes("UTF-8"); |
| txn = curator.createTransaction(zkAcl, fencingNodePath); |
| txn.setData(node1, setData, -1); |
| txn.delete(node2); |
| assertTrue(curator.exists(node2)); |
| assertTrue(Arrays.equals(testData, curator.getData(node1))); |
| txn.commit(); |
| assertFalse(curator.exists(node2)); |
| assertTrue(Arrays.equals(setData, curator.getData(node1))); |
| } |
| } |