| /* |
| * 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.solr.common.util; |
| |
| import java.io.IOException; |
| import java.nio.file.Path; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.apache.commons.io.FileUtils; |
| import org.apache.solr.SolrTestCaseJ4; |
| import org.apache.solr.cloud.ZkTestServer; |
| import org.apache.solr.common.cloud.SolrZkClient; |
| import org.apache.solr.common.cloud.ZkMaintenanceUtils; |
| import org.apache.zookeeper.KeeperException; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| public class TestZkMaintenanceUtils extends SolrTestCaseJ4 { |
| |
| protected static ZkTestServer zkServer; |
| private static Path zkDir; |
| |
| @BeforeClass |
| public static void setUpClass() throws Exception { |
| zkDir = createTempDir("TestZkMaintenanceUtils"); |
| zkServer = new ZkTestServer(zkDir); |
| zkServer.run(); |
| } |
| |
| @AfterClass |
| public static void tearDownClass() throws IOException, InterruptedException { |
| |
| if (zkServer != null) { |
| zkServer.shutdown(); |
| zkServer = null; |
| } |
| if (null != zkDir) { |
| FileUtils.deleteDirectory(zkDir.toFile()); |
| zkDir = null; |
| } |
| } |
| |
| @Test |
| public void testPaths() { |
| assertEquals("Unexpected path construction" |
| , "" |
| , ZkMaintenanceUtils.getZkParent(null)); |
| |
| assertEquals("Unexpected path construction" |
| , "this/is/a" |
| , ZkMaintenanceUtils.getZkParent("this/is/a/path")); |
| |
| assertEquals("Unexpected path construction" |
| , "/root" |
| , ZkMaintenanceUtils.getZkParent("/root/path/")); |
| |
| assertEquals("Unexpected path construction" |
| , "" |
| , ZkMaintenanceUtils.getZkParent("/")); |
| |
| assertEquals("Unexpected path construction" |
| , "" |
| , ZkMaintenanceUtils.getZkParent("")); |
| |
| assertEquals("Unexpected path construction" |
| , "" |
| , ZkMaintenanceUtils.getZkParent("noslashesinstring")); |
| |
| assertEquals("Unexpected path construction" |
| , "" |
| , ZkMaintenanceUtils.getZkParent("/leadingslashonly")); |
| |
| } |
| |
| @Test |
| public void testTraverseZkTree() throws Exception { |
| try (SolrZkClient zkClient = new SolrZkClient(zkServer.getZkHost(), 10000)) { |
| zkClient.makePath("/testTraverseZkTree/1/1", true, true); |
| zkClient.makePath("/testTraverseZkTree/1/2", false, true); |
| zkClient.makePath("/testTraverseZkTree/2", false, true); |
| assertEquals(Arrays.asList("/testTraverseZkTree", "/testTraverseZkTree/1", "/testTraverseZkTree/1/1", "/testTraverseZkTree/1/2", "/testTraverseZkTree/2"), getTraverseedZNodes(zkClient, "/testTraverseZkTree", ZkMaintenanceUtils.VISIT_ORDER.VISIT_PRE)); |
| assertEquals(Arrays.asList("/testTraverseZkTree/1/1", "/testTraverseZkTree/1/2", "/testTraverseZkTree/1", "/testTraverseZkTree/2", "/testTraverseZkTree"), getTraverseedZNodes(zkClient, "/testTraverseZkTree", ZkMaintenanceUtils.VISIT_ORDER.VISIT_POST)); |
| |
| } |
| } |
| |
| private List<String> getTraverseedZNodes(SolrZkClient zkClient, String path, ZkMaintenanceUtils.VISIT_ORDER visitOrder) throws KeeperException, InterruptedException { |
| List<String> result = new ArrayList<>(); |
| ZkMaintenanceUtils.traverseZkTree(zkClient, path, visitOrder, new ZkMaintenanceUtils.ZkVisitor() { |
| |
| @Override |
| public void visit(String path) throws InterruptedException, KeeperException { |
| result.add(path); |
| } |
| }); |
| return result; |
| } |
| } |