| /** |
| * 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.SINGLE_NODE_CACHE; |
| import static org.apache.curator.framework.recipes.cache.CuratorCacheAccessor.parentPathFilter; |
| import static org.apache.curator.framework.recipes.cache.CuratorCacheListener.builder; |
| import static org.junit.jupiter.api.Assertions.assertArrayEquals; |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| import static org.junit.jupiter.api.Assertions.assertNull; |
| import static org.junit.jupiter.api.Assertions.assertTrue; |
| import static org.junit.jupiter.api.Assertions.fail; |
| import com.google.common.collect.ImmutableSet; |
| import org.apache.curator.framework.CuratorFramework; |
| import org.apache.curator.framework.CuratorFrameworkFactory; |
| import org.apache.curator.retry.RetryOneTime; |
| import org.apache.curator.test.compatibility.CuratorTestBase; |
| import org.junit.jupiter.api.Tag; |
| import org.junit.jupiter.api.Test; |
| |
| import java.util.AbstractMap; |
| import java.util.Map; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.Semaphore; |
| import java.util.concurrent.TimeUnit; |
| import java.util.function.Supplier; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| |
| @Tag(CuratorTestBase.zk36Group) |
| public class TestCuratorCacheWrappers extends CuratorTestBase |
| { |
| @Test |
| public void testPathChildrenCache() throws Exception // copied from TestPathChildrenCache#testBasics() |
| { |
| try (CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1))) |
| { |
| client.start(); |
| client.create().forPath("/test"); |
| |
| final CopyOnWriteArrayList<PathChildrenCacheEvent> eventsTrace = new CopyOnWriteArrayList<>(); |
| final BlockingQueue<PathChildrenCacheEvent.Type> events = new LinkedBlockingQueue<>(); |
| try (CuratorCache cache = CuratorCache.build(client, "/test")) |
| { |
| PathChildrenCacheListener listener = (__, event) -> { |
| eventsTrace.add(event); |
| if ( event.getData().getPath().equals("/test/one") ) |
| { |
| events.offer(event.getType()); |
| } |
| }; |
| cache.listenable().addListener(builder().forPathChildrenCache("/test", client, listener).build()); |
| cache.start(); |
| |
| client.create().forPath("/test/one", "hey there".getBytes()); |
| assertEquals(events.poll(timing.forWaiting().seconds(), TimeUnit.SECONDS), PathChildrenCacheEvent.Type.CHILD_ADDED); |
| |
| client.setData().forPath("/test/one", "sup!".getBytes()); |
| assertEquals(events.poll(timing.forWaiting().seconds(), TimeUnit.SECONDS), PathChildrenCacheEvent.Type.CHILD_UPDATED); |
| assertEquals(new String(cache.get("/test/one").orElseThrow(AssertionError::new).getData()), "sup!"); |
| |
| client.delete().forPath("/test/one"); |
| assertEquals(events.poll(timing.forWaiting().seconds(), TimeUnit.SECONDS), PathChildrenCacheEvent.Type.CHILD_REMOVED); |
| |
| // Please note that there is not guarantee on the order of events |
| // For instance INITIALIZED event can appear in the middle of the observed sequence. |
| for (PathChildrenCacheEvent event : eventsTrace) { |
| switch (event.getType()) { |
| case CHILD_ADDED: |
| case CHILD_REMOVED: |
| case CHILD_UPDATED: |
| assertEquals("/test/one", event.getData().getPath()); |
| break; |
| case INITIALIZED: |
| assertNull(event.getData()); |
| break; |
| default: |
| fail(); |
| } |
| } |
| assertEquals(eventsTrace.size(), 4); |
| } |
| } |
| } |
| |
| @Test |
| public void testTreeCache() throws Exception // copied from TestTreeCache#testBasics() |
| { |
| BaseTestTreeCache treeCacheBase = new BaseTestTreeCache(); |
| try (CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1))) |
| { |
| client.start(); |
| client.create().forPath("/test"); |
| |
| try (CuratorCache cache = CuratorCache.build(client, "/test")) |
| { |
| cache.listenable().addListener(builder().forTreeCache(client, treeCacheBase.eventListener).build()); |
| cache.start(); |
| |
| treeCacheBase.assertEvent(TreeCacheEvent.Type.NODE_ADDED, "/test"); |
| treeCacheBase.assertEvent(TreeCacheEvent.Type.INITIALIZED); |
| assertEquals(toMap(cache.stream().filter(parentPathFilter("/test"))).keySet(), ImmutableSet.of()); |
| assertEquals(cache.stream().filter(parentPathFilter("/t")).count(), 0); |
| assertEquals(cache.stream().filter(parentPathFilter("/testing")).count(), 0); |
| |
| client.create().forPath("/test/one", "hey there".getBytes()); |
| treeCacheBase.assertEvent(TreeCacheEvent.Type.NODE_ADDED, "/test/one"); |
| assertEquals(toMap(cache.stream().filter(parentPathFilter("/test"))).keySet(), ImmutableSet.of("/test/one")); |
| assertEquals(new String(cache.get("/test/one").orElseThrow(AssertionError::new).getData()), "hey there"); |
| assertEquals(toMap(cache.stream().filter(parentPathFilter("/test/one"))).keySet(), ImmutableSet.of()); |
| assertEquals(cache.stream().filter(parentPathFilter("/test/o")).count(), 0); |
| assertEquals(cache.stream().filter(parentPathFilter("/test/onely")).count(), 0); |
| |
| client.setData().forPath("/test/one", "sup!".getBytes()); |
| treeCacheBase.assertEvent(TreeCacheEvent.Type.NODE_UPDATED, "/test/one"); |
| assertEquals(toMap(cache.stream().filter(parentPathFilter("/test"))).keySet(), ImmutableSet.of("/test/one")); |
| assertEquals(new String(cache.get("/test/one").orElseThrow(AssertionError::new).getData()), "sup!"); |
| |
| client.delete().forPath("/test/one"); |
| treeCacheBase.assertEvent(TreeCacheEvent.Type.NODE_REMOVED, "/test/one", "sup!".getBytes()); |
| assertEquals(toMap(cache.stream().filter(parentPathFilter("/test"))).keySet(), ImmutableSet.of()); |
| } |
| } |
| } |
| |
| @Test |
| public void testNodeCache() throws Exception // copied from TestNodeCache#testBasics() |
| { |
| try ( CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1)) ) |
| { |
| client.start(); |
| client.create().forPath("/test"); |
| |
| try (CuratorCache cache = CuratorCache.build(client, "/test/node", SINGLE_NODE_CACHE)) |
| { |
| Supplier<ChildData> getRootData = () -> cache.get("/test/node").orElseThrow(() -> new AssertionError("is not present")); |
| cache.start(); |
| |
| final Semaphore semaphore = new Semaphore(0); |
| cache.listenable().addListener(builder().forNodeCache(semaphore::release).build()); |
| try |
| { |
| getRootData.get(); |
| fail("Should have thrown"); |
| } |
| catch ( AssertionError expected ) |
| { |
| // expected |
| } |
| |
| client.create().forPath("/test/node", "a".getBytes()); |
| assertTrue(timing.acquireSemaphore(semaphore)); |
| assertArrayEquals(getRootData.get().getData(), "a".getBytes()); |
| |
| client.setData().forPath("/test/node", "b".getBytes()); |
| assertTrue(timing.acquireSemaphore(semaphore)); |
| assertArrayEquals(getRootData.get().getData(), "b".getBytes()); |
| |
| client.delete().forPath("/test/node"); |
| assertTrue(timing.acquireSemaphore(semaphore)); |
| try |
| { |
| getRootData.get(); |
| fail("Should have thrown"); |
| } |
| catch ( AssertionError expected ) |
| { |
| // expected |
| } |
| } |
| } |
| } |
| |
| private static Map<String, ChildData> toMap(Stream<ChildData> stream) |
| { |
| return stream.map(data -> new AbstractMap.SimpleEntry<>(data.getPath(), data)) |
| .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue)); |
| } |
| } |