| /** |
| * 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.curator.framework.recipes.cache; |
| |
| import static org.apache.curator.framework.recipes.cache.CuratorCache.Options.DO_NOT_CLEAR_ON_CLOSE; |
| import static org.junit.jupiter.api.Assertions.assertArrayEquals; |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| import static org.junit.jupiter.api.Assertions.assertTrue; |
| |
| import org.apache.curator.framework.CuratorFramework; |
| import org.apache.curator.framework.CuratorFrameworkFactory; |
| import org.apache.curator.framework.state.ConnectionState; |
| import org.apache.curator.retry.RetryOneTime; |
| import org.apache.curator.test.InstanceSpec; |
| import org.apache.curator.test.TestingCluster; |
| import org.apache.curator.test.compatibility.CuratorTestBase; |
| import org.junit.jupiter.api.Tag; |
| import org.junit.jupiter.api.Test; |
| |
| import java.util.concurrent.CountDownLatch; |
| |
| @Tag(CuratorTestBase.zk36Group) |
| public class TestCuratorCacheEdges extends CuratorTestBase |
| { |
| @Test |
| public void testReconnectConsistency() throws Exception |
| { |
| final byte[] first = "one".getBytes(); |
| final byte[] second = "two".getBytes(); |
| |
| try (CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1))) |
| { |
| client.start(); |
| client.create().forPath("/root", first); |
| client.create().forPath("/root/1", first); |
| client.create().forPath("/root/2", first); |
| client.create().forPath("/root/1/11", first); |
| client.create().forPath("/root/1/12", first); |
| client.create().forPath("/root/1/13", first); |
| client.create().forPath("/root/2/21", first); |
| client.create().forPath("/root/2/22", first); |
| |
| CuratorCacheStorage storage = CuratorCacheStorage.standard(); |
| try (CuratorCache cache = CuratorCache.builder(client, "/root").withStorage(storage).withOptions(DO_NOT_CLEAR_ON_CLOSE).build()) |
| { |
| CountDownLatch latch = new CountDownLatch(1); |
| cache.listenable().addListener(CuratorCacheListener.builder().forInitialized(latch::countDown).build()); |
| cache.start(); |
| assertTrue(timing.awaitLatch(latch)); |
| } |
| |
| // we now have a storage loaded with the initial nodes created |
| |
| // simulate nodes changing during a partition |
| |
| client.delete().forPath("/root/2/21"); |
| client.delete().forPath("/root/2/22"); |
| client.delete().forPath("/root/2"); |
| |
| client.setData().forPath("/root", second); |
| client.create().forPath("/root/1/11/111", second); |
| client.create().forPath("/root/1/11/111/1111", second); |
| client.create().forPath("/root/1/11/111/1112", second); |
| client.create().forPath("/root/1/13/131", second); |
| client.create().forPath("/root/1/13/132", second); |
| client.create().forPath("/root/1/13/132/1321", second); |
| |
| try (CuratorCache cache = CuratorCache.builder(client, "/root").withStorage(storage).withOptions(DO_NOT_CLEAR_ON_CLOSE).build()) |
| { |
| CountDownLatch latch = new CountDownLatch(1); |
| cache.listenable().addListener(CuratorCacheListener.builder().forInitialized(latch::countDown).build()); |
| cache.start(); |
| assertTrue(timing.awaitLatch(latch)); |
| } |
| |
| assertEquals(storage.size(), 11); |
| assertArrayEquals(storage.get("/root").map(ChildData::getData).orElse(null), second); |
| assertArrayEquals(storage.get("/root/1").map(ChildData::getData).orElse(null), first); |
| assertArrayEquals(storage.get("/root/1/11").map(ChildData::getData).orElse(null), first); |
| assertArrayEquals(storage.get("/root/1/11/111").map(ChildData::getData).orElse(null), second); |
| assertArrayEquals(storage.get("/root/1/11/111/1111").map(ChildData::getData).orElse(null), second); |
| assertArrayEquals(storage.get("/root/1/11/111/1112").map(ChildData::getData).orElse(null), second); |
| assertArrayEquals(storage.get("/root/1/12").map(ChildData::getData).orElse(null), first); |
| assertArrayEquals(storage.get("/root/1/13").map(ChildData::getData).orElse(null), first); |
| assertArrayEquals(storage.get("/root/1/13/131").map(ChildData::getData).orElse(null), second); |
| assertArrayEquals(storage.get("/root/1/13/132").map(ChildData::getData).orElse(null), second); |
| assertArrayEquals(storage.get("/root/1/13/132/1321").map(ChildData::getData).orElse(null), second); |
| } |
| } |
| |
| @Test |
| public void testServerLoss() throws Exception // mostly copied from TestPathChildrenCacheInCluster |
| { |
| try (TestingCluster cluster = new TestingCluster(3)) |
| { |
| cluster.start(); |
| |
| try (CuratorFramework client = CuratorFrameworkFactory.newClient(cluster.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1))) |
| { |
| client.start(); |
| client.create().creatingParentsIfNeeded().forPath("/test"); |
| |
| try (CuratorCache cache = CuratorCache.build(client, "/test")) |
| { |
| cache.start(); |
| |
| CountDownLatch reconnectLatch = new CountDownLatch(1); |
| client.getConnectionStateListenable().addListener((__, newState) -> { |
| if ( newState == ConnectionState.RECONNECTED ) |
| { |
| reconnectLatch.countDown(); |
| } |
| }); |
| CountDownLatch latch = new CountDownLatch(3); |
| cache.listenable().addListener((__, ___, ____) -> latch.countDown()); |
| |
| client.create().forPath("/test/one"); |
| client.create().forPath("/test/two"); |
| client.create().forPath("/test/three"); |
| |
| assertTrue(timing.awaitLatch(latch)); |
| |
| InstanceSpec connectionInstance = cluster.findConnectionInstance(client.getZookeeperClient().getZooKeeper()); |
| cluster.killServer(connectionInstance); |
| |
| assertTrue(timing.awaitLatch(reconnectLatch)); |
| |
| timing.sleepABit(); |
| |
| assertEquals(cache.stream().count(), 4); |
| } |
| } |
| } |
| } |
| } |