| /** |
| * 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; |
| |
| import com.google.common.collect.Lists; |
| import org.apache.curator.test.BaseClassForTests; |
| import org.apache.curator.test.Timing; |
| import org.apache.curator.utils.CloseableUtils; |
| 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.TestingServer; |
| import org.apache.curator.x.discovery.details.ServiceCacheListener; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| import java.io.Closeable; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.Semaphore; |
| import java.util.concurrent.TimeUnit; |
| |
| public class TestServiceCache extends BaseClassForTests |
| { |
| @Test |
| public void testInitialLoad() throws Exception |
| { |
| List<Closeable> closeables = Lists.newArrayList(); |
| try |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| closeables.add(client); |
| client.start(); |
| |
| ServiceDiscovery<String> discovery = ServiceDiscoveryBuilder.builder(String.class).basePath("/discovery").client(client).build(); |
| closeables.add(discovery); |
| discovery.start(); |
| |
| ServiceCache<String> cache = discovery.serviceCacheBuilder().name("test").build(); |
| closeables.add(cache); |
| |
| final CountDownLatch latch = new CountDownLatch(3); |
| ServiceCacheListener listener = new ServiceCacheListener() |
| { |
| @Override |
| public void cacheChanged() |
| { |
| latch.countDown(); |
| } |
| |
| @Override |
| public void stateChanged(CuratorFramework client, ConnectionState newState) |
| { |
| } |
| }; |
| cache.addListener(listener); |
| cache.start(); |
| |
| ServiceInstance<String> instance1 = ServiceInstance.<String>builder().payload("test").name("test").port(10064).build(); |
| ServiceInstance<String> instance2 = ServiceInstance.<String>builder().payload("test").name("test").port(10065).build(); |
| ServiceInstance<String> instance3 = ServiceInstance.<String>builder().payload("test").name("test").port(10066).build(); |
| discovery.registerService(instance1); |
| discovery.registerService(instance2); |
| discovery.registerService(instance3); |
| |
| Assert.assertTrue(latch.await(10, TimeUnit.SECONDS)); |
| |
| ServiceCache<String> cache2 = discovery.serviceCacheBuilder().name("test").build(); |
| closeables.add(cache2); |
| cache2.start(); |
| |
| Assert.assertEquals(cache2.getInstances().size(), 3); |
| } |
| finally |
| { |
| Collections.reverse(closeables); |
| for ( Closeable c : closeables ) |
| { |
| CloseableUtils.closeQuietly(c); |
| } |
| } |
| } |
| |
| @Test |
| public void testViaProvider() throws Exception |
| { |
| Timing timing = new Timing(); |
| |
| List<Closeable> closeables = Lists.newArrayList(); |
| try |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| closeables.add(client); |
| client.start(); |
| |
| ServiceDiscovery<String> discovery = ServiceDiscoveryBuilder.builder(String.class).basePath("/discovery").client(client).build(); |
| closeables.add(discovery); |
| discovery.start(); |
| |
| ServiceProvider<String> serviceProvider = discovery.serviceProviderBuilder().serviceName("test").build(); |
| closeables.add(serviceProvider); |
| serviceProvider.start(); |
| |
| ServiceInstance<String> instance = ServiceInstance.<String>builder().payload("thing").name("test").port(10064).build(); |
| discovery.registerService(instance); |
| |
| int count = 0; |
| ServiceInstance<String> foundInstance = null; |
| while ( foundInstance == null ) |
| { |
| Assert.assertTrue(count++ < 5); |
| foundInstance = serviceProvider.getInstance(); |
| timing.sleepABit(); |
| } |
| Assert.assertEquals(foundInstance, instance); |
| |
| ServiceInstance<String> instance2 = ServiceInstance.<String>builder().address("foo").payload("thing").name("test").port(10064).build(); |
| discovery.registerService(instance2); |
| timing.sleepABit(); |
| Collection<ServiceInstance<String>> allInstances = serviceProvider.getAllInstances(); |
| Assert.assertEquals(allInstances.size(), 2); |
| } |
| finally |
| { |
| Collections.reverse(closeables); |
| for ( Closeable c : closeables ) |
| { |
| CloseableUtils.closeQuietly(c); |
| } |
| } |
| } |
| |
| @Test |
| public void testUpdate() 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(); |
| |
| final CountDownLatch latch = new CountDownLatch(1); |
| ServiceCache<String> cache = discovery.serviceCacheBuilder().name("test").build(); |
| closeables.add(cache); |
| ServiceCacheListener listener = new ServiceCacheListener() |
| { |
| @Override |
| public void cacheChanged() |
| { |
| latch.countDown(); |
| } |
| |
| @Override |
| public void stateChanged(CuratorFramework client, ConnectionState newState) |
| { |
| } |
| }; |
| cache.addListener(listener); |
| cache.start(); |
| |
| instance = ServiceInstance.<String>builder().payload("changed").name("test").port(10064).id(instance.getId()).build(); |
| discovery.updateService(instance); |
| |
| Assert.assertTrue(latch.await(10, TimeUnit.SECONDS)); |
| |
| Assert.assertEquals(cache.getInstances().size(), 1); |
| Assert.assertEquals(cache.getInstances().get(0).getPayload(), instance.getPayload()); |
| } |
| finally |
| { |
| Collections.reverse(closeables); |
| for ( Closeable c : closeables ) |
| { |
| CloseableUtils.closeQuietly(c); |
| } |
| } |
| } |
| |
| @Test |
| public void testCache() throws Exception |
| { |
| List<Closeable> closeables = Lists.newArrayList(); |
| try |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| closeables.add(client); |
| client.start(); |
| |
| ServiceDiscovery<String> discovery = ServiceDiscoveryBuilder.builder(String.class).basePath("/discovery").client(client).build(); |
| closeables.add(discovery); |
| discovery.start(); |
| |
| ServiceCache<String> cache = discovery.serviceCacheBuilder().name("test").build(); |
| closeables.add(cache); |
| cache.start(); |
| |
| final Semaphore semaphore = new Semaphore(0); |
| ServiceCacheListener listener = new ServiceCacheListener() |
| { |
| @Override |
| public void cacheChanged() |
| { |
| semaphore.release(); |
| } |
| |
| @Override |
| public void stateChanged(CuratorFramework client, ConnectionState newState) |
| { |
| } |
| }; |
| cache.addListener(listener); |
| |
| 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(); |
| discovery.registerService(instance1); |
| Assert.assertTrue(semaphore.tryAcquire(10, TimeUnit.SECONDS)); |
| |
| discovery.registerService(instance2); |
| Assert.assertTrue(semaphore.tryAcquire(3, TimeUnit.SECONDS)); |
| |
| ServiceInstance<String> instance3 = ServiceInstance.<String>builder().payload("thing").name("another").port(10064).build(); |
| discovery.registerService(instance3); |
| Assert.assertFalse(semaphore.tryAcquire(3, TimeUnit.SECONDS)); // should not get called for a different service |
| } |
| finally |
| { |
| Collections.reverse(closeables); |
| for ( Closeable c : closeables ) |
| { |
| CloseableUtils.closeQuietly(c); |
| } |
| } |
| } |
| } |