| /* |
| * 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.drill.exec.coord.zk; |
| |
| import java.io.IOException; |
| import java.nio.charset.StandardCharsets; |
| |
| import org.apache.curator.RetryPolicy; |
| import org.apache.curator.framework.CuratorFramework; |
| import org.apache.curator.framework.CuratorFrameworkFactory; |
| import org.apache.curator.framework.listen.MappingListenerManager; |
| import org.apache.curator.framework.recipes.cache.PathChildrenCache; |
| import org.apache.curator.framework.recipes.cache.PathChildrenCacheListener; |
| import org.apache.curator.retry.RetryNTimes; |
| import org.apache.curator.test.TestingServer; |
| import org.apache.drill.exec.ZookeeperTestUtil; |
| import org.apache.drill.exec.coord.store.TransientStoreConfig; |
| import org.apache.drill.exec.serialization.InstanceSerializer; |
| import org.apache.drill.test.BaseTest; |
| import org.junit.After; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.mockito.Mockito; |
| |
| public class TestEphemeralStore extends BaseTest { |
| private final static String root = "/test"; |
| private final static String path = "test-key"; |
| private final static String value = "testing"; |
| |
| private TestingServer server; |
| private CuratorFramework curator; |
| private TransientStoreConfig<String> config; |
| private ZkEphemeralStore<String> store; |
| |
| static class StoreWithMockClient<V> extends ZkEphemeralStore<V> { |
| private final ZookeeperClient client = Mockito.mock(ZookeeperClient.class); |
| |
| public StoreWithMockClient(final TransientStoreConfig<V> config, final CuratorFramework curator) { |
| super(config, curator); |
| } |
| |
| @Override |
| protected ZookeeperClient getClient() { |
| return client; |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Before |
| public void setUp() throws Exception { |
| ZookeeperTestUtil.setZookeeperSaslTestConfigProps(); |
| |
| server = new TestingServer(); |
| final RetryPolicy policy = new RetryNTimes(2, 1000); |
| curator = CuratorFrameworkFactory.newClient(server.getConnectString(), policy); |
| |
| config = Mockito.mock(TransientStoreConfig.class); |
| Mockito |
| .when(config.getName()) |
| .thenReturn(root); |
| |
| Mockito |
| .when(config.getSerializer()) |
| .thenReturn(new InstanceSerializer<String>() { |
| @Override |
| public byte[] serialize(final String instance) throws IOException { |
| if (instance == null) { |
| return null; |
| } |
| return instance.getBytes(StandardCharsets.UTF_8); |
| } |
| |
| @Override |
| public String deserialize(final byte[] raw) throws IOException { |
| if (raw == null) { |
| return null; |
| } |
| return new String(raw); |
| } |
| }); |
| |
| store = new ZkEphemeralStore<>(config, curator); |
| |
| server.start(); |
| curator.start(); |
| store.start(); |
| } |
| |
| /** |
| * This test ensures store subscribes to receive events from underlying client. Dispatcher tests ensures listeners |
| * are fired on incoming events. These two sets of tests ensure observer pattern in {@code TransientStore} works fine. |
| */ |
| @Test |
| public void testStoreRegistersDispatcherAndStartsItsClient() throws Exception { |
| @SuppressWarnings("resource") |
| final StoreWithMockClient<String> store = new StoreWithMockClient<>(config, curator); |
| |
| final PathChildrenCache cache = Mockito.mock(PathChildrenCache.class); |
| final ZookeeperClient client = store.getClient(); |
| Mockito |
| .when(client.getCache()) |
| .thenReturn(cache); |
| |
| @SuppressWarnings("unchecked") |
| final MappingListenerManager<PathChildrenCacheListener,PathChildrenCacheListener> container = Mockito.mock(MappingListenerManager.class); |
| Mockito |
| .when(cache.getListenable()) |
| .thenReturn(container); |
| |
| store.start(); |
| |
| Mockito |
| .verify(container) |
| .addListener(store.dispatcher); |
| |
| Mockito |
| .verify(client) |
| .start(); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| store.close(); |
| curator.close(); |
| server.close(); |
| } |
| |
| @Test |
| public void testPutAndGetWorksAntagonistacally() { |
| store.put(path, value); |
| final String actual = store.get(path); |
| Assert.assertEquals("value mismatch", value, actual); |
| } |
| } |