| /** |
| * 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.x.discovery.details; |
| |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Sets; |
| import org.apache.curator.framework.CuratorFramework; |
| import org.apache.curator.framework.CuratorFrameworkFactory; |
| import org.apache.curator.retry.RetryOneTime; |
| import org.apache.curator.test.BaseClassForTests; |
| import org.apache.curator.test.KillSession; |
| import org.apache.curator.test.Timing; |
| import org.apache.curator.utils.CloseableUtils; |
| import org.apache.curator.x.discovery.ServiceDiscovery; |
| import org.apache.curator.x.discovery.ServiceDiscoveryBuilder; |
| import org.apache.curator.x.discovery.ServiceInstance; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| import java.io.Closeable; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.List; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.Semaphore; |
| |
| public class TestServiceDiscovery extends BaseClassForTests |
| { |
| private static final Comparator<ServiceInstance<Void>> comparator = new Comparator<ServiceInstance<Void>>() |
| { |
| @Override |
| public int compare(ServiceInstance<Void> o1, ServiceInstance<Void> o2) |
| { |
| return o1.getId().compareTo(o2.getId()); |
| } |
| }; |
| |
| @Test |
| public void testCrashedServerMultiInstances() throws Exception |
| { |
| List<Closeable> closeables = Lists.newArrayList(); |
| try |
| { |
| Timing timing = new Timing(); |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1)); |
| closeables.add(client); |
| client.start(); |
| |
| final Semaphore semaphore = new Semaphore(0); |
| ServiceInstance<String> instance1 = ServiceInstance.<String>builder().payload("thing").name("test").port(10064).build(); |
| ServiceInstance<String> instance2 = ServiceInstance.<String>builder().payload("thing").name("test").port(10065).build(); |
| ServiceDiscovery<String> discovery = new ServiceDiscoveryImpl<String>(client, "/test", new JsonInstanceSerializer<String>(String.class), instance1, false) |
| { |
| @Override |
| protected void internalRegisterService(ServiceInstance<String> service) throws Exception |
| { |
| super.internalRegisterService(service); |
| semaphore.release(); |
| } |
| }; |
| closeables.add(discovery); |
| discovery.start(); |
| discovery.registerService(instance2); |
| |
| timing.acquireSemaphore(semaphore, 2); |
| Assert.assertEquals(discovery.queryForInstances("test").size(), 2); |
| |
| KillSession.kill(client.getZookeeperClient().getZooKeeper(), server.getConnectString()); |
| server.stop(); |
| |
| server.restart(); |
| closeables.add(server); |
| |
| timing.acquireSemaphore(semaphore, 2); |
| Assert.assertEquals(discovery.queryForInstances("test").size(), 2); |
| } |
| finally |
| { |
| for ( Closeable c : closeables ) |
| { |
| CloseableUtils.closeQuietly(c); |
| } |
| } |
| } |
| |
| @Test |
| public void testCrashedServer() throws Exception |
| { |
| List<Closeable> closeables = Lists.newArrayList(); |
| try |
| { |
| Timing timing = new Timing(); |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1)); |
| closeables.add(client); |
| client.start(); |
| |
| final Semaphore semaphore = new Semaphore(0); |
| ServiceInstance<String> instance = ServiceInstance.<String>builder().payload("thing").name("test").port(10064).build(); |
| ServiceDiscovery<String> discovery = new ServiceDiscoveryImpl<String>(client, "/test", new JsonInstanceSerializer<String>(String.class), instance, false) |
| { |
| @Override |
| protected void internalRegisterService(ServiceInstance<String> service) throws Exception |
| { |
| super.internalRegisterService(service); |
| semaphore.release(); |
| } |
| }; |
| closeables.add(discovery); |
| discovery.start(); |
| |
| timing.acquireSemaphore(semaphore); |
| Assert.assertEquals(discovery.queryForInstances("test").size(), 1); |
| |
| KillSession.kill(client.getZookeeperClient().getZooKeeper(), server.getConnectString()); |
| server.stop(); |
| |
| server.restart(); |
| closeables.add(server); |
| |
| timing.acquireSemaphore(semaphore); |
| Assert.assertEquals(discovery.queryForInstances("test").size(), 1); |
| } |
| finally |
| { |
| for ( Closeable c : closeables ) |
| { |
| CloseableUtils.closeQuietly(c); |
| } |
| } |
| } |
| |
| @Test |
| public void testCrashedInstance() throws Exception |
| { |
| List<Closeable> closeables = Lists.newArrayList(); |
| try |
| { |
| Timing timing = new Timing(); |
| |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1)); |
| closeables.add(client); |
| client.start(); |
| |
| ServiceInstance<String> instance = ServiceInstance.<String>builder().payload("thing").name("test").port(10064).build(); |
| ServiceDiscovery<String> discovery = new ServiceDiscoveryImpl<String>(client, "/test", new JsonInstanceSerializer<String>(String.class), instance, false); |
| closeables.add(discovery); |
| discovery.start(); |
| |
| Assert.assertEquals(discovery.queryForInstances("test").size(), 1); |
| |
| KillSession.kill(client.getZookeeperClient().getZooKeeper(), server.getConnectString()); |
| Thread.sleep(timing.multiple(1.5).session()); |
| |
| Assert.assertEquals(discovery.queryForInstances("test").size(), 1); |
| } |
| finally |
| { |
| Collections.reverse(closeables); |
| for ( Closeable c : closeables ) |
| { |
| CloseableUtils.closeQuietly(c); |
| } |
| } |
| } |
| |
| @Test |
| public void testMultipleInstances() throws Exception |
| { |
| final String SERVICE_ONE = "one"; |
| final String SERVICE_TWO = "two"; |
| |
| List<Closeable> closeables = Lists.newArrayList(); |
| try |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| closeables.add(client); |
| client.start(); |
| |
| ServiceInstance<Void> s1_i1 = ServiceInstance.<Void>builder().name(SERVICE_ONE).build(); |
| ServiceInstance<Void> s1_i2 = ServiceInstance.<Void>builder().name(SERVICE_ONE).build(); |
| ServiceInstance<Void> s2_i1 = ServiceInstance.<Void>builder().name(SERVICE_TWO).build(); |
| ServiceInstance<Void> s2_i2 = ServiceInstance.<Void>builder().name(SERVICE_TWO).build(); |
| |
| ServiceDiscovery<Void> discovery = ServiceDiscoveryBuilder.builder(Void.class).client(client).basePath("/test").build(); |
| closeables.add(discovery); |
| discovery.start(); |
| |
| discovery.registerService(s1_i1); |
| discovery.registerService(s1_i2); |
| discovery.registerService(s2_i1); |
| discovery.registerService(s2_i2); |
| |
| Assert.assertEquals(Sets.newHashSet(discovery.queryForNames()), Sets.newHashSet(SERVICE_ONE, SERVICE_TWO)); |
| |
| List<ServiceInstance<Void>> list = Lists.newArrayList(); |
| list.add(s1_i1); |
| list.add(s1_i2); |
| Collections.sort(list, comparator); |
| List<ServiceInstance<Void>> queriedInstances = Lists.newArrayList(discovery.queryForInstances(SERVICE_ONE)); |
| Collections.sort(queriedInstances, comparator); |
| Assert.assertEquals(queriedInstances, list, String.format("Not equal l: %s - d: %s", list, queriedInstances)); |
| |
| list.clear(); |
| |
| list.add(s2_i1); |
| list.add(s2_i2); |
| Collections.sort(list, comparator); |
| queriedInstances = Lists.newArrayList(discovery.queryForInstances(SERVICE_TWO)); |
| Collections.sort(queriedInstances, comparator); |
| Assert.assertEquals(queriedInstances, list, String.format("Not equal 2: %s - d: %s", list, queriedInstances)); |
| } |
| finally |
| { |
| Collections.reverse(closeables); |
| for ( Closeable c : closeables ) |
| { |
| CloseableUtils.closeQuietly(c); |
| } |
| } |
| } |
| |
| @Test |
| public void testBasic() throws Exception |
| { |
| List<Closeable> closeables = Lists.newArrayList(); |
| try |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| closeables.add(client); |
| client.start(); |
| |
| ServiceInstance<String> instance = ServiceInstance.<String>builder().payload("thing").name("test").port(10064).build(); |
| ServiceDiscovery<String> discovery = ServiceDiscoveryBuilder.builder(String.class).basePath("/test").client(client).thisInstance(instance).build(); |
| closeables.add(discovery); |
| discovery.start(); |
| |
| Assert.assertEquals(discovery.queryForNames(), Collections.singletonList("test")); |
| |
| List<ServiceInstance<String>> list = Lists.newArrayList(); |
| list.add(instance); |
| Assert.assertEquals(discovery.queryForInstances("test"), list); |
| } |
| finally |
| { |
| Collections.reverse(closeables); |
| for ( Closeable c : closeables ) |
| { |
| CloseableUtils.closeQuietly(c); |
| } |
| } |
| } |
| |
| @Test |
| public void testNoServerOnStart() throws Exception |
| { |
| server.stop(); |
| List<Closeable> closeables = Lists.newArrayList(); |
| try |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| closeables.add(client); |
| client.start(); |
| |
| ServiceInstance<String> instance = ServiceInstance.<String>builder().payload("thing").name("test").port(10064).build(); |
| ServiceDiscovery<String> discovery = ServiceDiscoveryBuilder.builder(String.class).basePath("/test").client(client).thisInstance(instance).build(); |
| closeables.add(discovery); |
| discovery.start(); |
| |
| server.restart(); |
| Assert.assertEquals(discovery.queryForNames(), Collections.singletonList("test")); |
| |
| List<ServiceInstance<String>> list = Lists.newArrayList(); |
| list.add(instance); |
| Assert.assertEquals(discovery.queryForInstances("test"), list); |
| } |
| finally |
| { |
| Collections.reverse(closeables); |
| for ( Closeable c : closeables ) |
| { |
| CloseableUtils.closeQuietly(c); |
| } |
| } |
| } |
| |
| // CURATOR-164 |
| @Test |
| public void testUnregisterService() throws Exception |
| { |
| final String name = "name"; |
| |
| final CountDownLatch restartLatch = new CountDownLatch(1); |
| List<Closeable> closeables = Lists.newArrayList(); |
| |
| InstanceSerializer<String> slowSerializer = new JsonInstanceSerializer<String>(String.class) |
| { |
| private boolean first = true; |
| |
| @Override |
| public byte[] serialize(ServiceInstance<String> instance) throws Exception |
| { |
| if ( first ) |
| { |
| System.out.println("Serializer first registration."); |
| first = false; |
| } |
| else |
| { |
| System.out.println("Waiting for reconnect to finish."); |
| // Simulate the serialize method being slow. |
| // This could just be a timed wait, but that's kind of non-deterministic. |
| restartLatch.await(); |
| } |
| return super.serialize(instance); |
| } |
| }; |
| |
| try |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| closeables.add(client); |
| client.start(); |
| |
| ServiceInstance<String> instance = ServiceInstance.<String>builder().payload("thing").name(name).port(10064).build(); |
| ServiceDiscovery<String> discovery = ServiceDiscoveryBuilder.builder(String.class).basePath("/test").client(client).thisInstance(instance).serializer(slowSerializer).watchInstances(true).build(); |
| closeables.add(discovery); |
| discovery.start(); |
| |
| Assert.assertFalse(discovery.queryForInstances(name).isEmpty(), "Service should start registered."); |
| |
| server.stop(); |
| server.restart(); |
| |
| discovery.unregisterService(instance); |
| restartLatch.countDown(); |
| |
| new Timing().sleepABit(); // Wait for the rest of registration to finish. |
| |
| Assert.assertTrue(discovery.queryForInstances(name).isEmpty(), "Service should have unregistered."); |
| } |
| finally |
| { |
| Collections.reverse(closeables); |
| for ( Closeable c : closeables ) |
| { |
| CloseableUtils.closeQuietly(c); |
| } |
| } |
| } |
| |
| @Test |
| public void testCleaning() throws Exception |
| { |
| List<Closeable> closeables = Lists.newArrayList(); |
| try |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| closeables.add(client); |
| client.start(); |
| |
| ServiceInstance<String> instance = ServiceInstance.<String>builder().payload("thing").name("test").port(10064).build(); |
| ServiceDiscovery<String> discovery = ServiceDiscoveryBuilder.builder(String.class).basePath("/test").client(client).thisInstance(instance).build(); |
| closeables.add(discovery); |
| discovery.start(); |
| discovery.unregisterService(instance); |
| |
| Assert.assertEquals(((ServiceDiscoveryImpl)discovery).debugServicesQty(), 0); |
| } |
| finally |
| { |
| Collections.reverse(closeables); |
| for ( Closeable c : closeables ) |
| { |
| CloseableUtils.closeQuietly(c); |
| } |
| } |
| } |
| } |