| /** |
| * 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.metron.maas.discovery; |
| |
| import org.apache.curator.RetryPolicy; |
| import org.apache.curator.framework.CuratorFramework; |
| import org.apache.curator.framework.CuratorFrameworkFactory; |
| import org.apache.curator.retry.ExponentialBackoffRetry; |
| import org.apache.curator.test.TestingServer; |
| import org.apache.curator.utils.CloseableUtils; |
| import org.apache.curator.x.discovery.ServiceInstance; |
| import org.apache.curator.x.discovery.ServiceInstanceBuilder; |
| import org.apache.curator.x.discovery.ServiceType; |
| import org.apache.metron.maas.config.Endpoint; |
| import org.apache.metron.maas.config.Model; |
| import org.apache.metron.maas.config.ModelEndpoint; |
| import org.junit.jupiter.api.AfterEach; |
| import org.junit.jupiter.api.BeforeEach; |
| import org.junit.jupiter.api.Test; |
| |
| import java.net.URL; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| |
| public class ServiceDiscoveryIntegrationTest { |
| private TestingServer testZkServer; |
| private String zookeeperUrl; |
| private CuratorFramework client; |
| private ServiceDiscoverer discoverer; |
| |
| @BeforeEach |
| public void setup() throws Exception { |
| testZkServer = new TestingServer(true); |
| zookeeperUrl = testZkServer.getConnectString(); |
| RetryPolicy retryPolicy = new ExponentialBackoffRetry(1000, 3); |
| client = CuratorFrameworkFactory.newClient(zookeeperUrl, retryPolicy); |
| client.start(); |
| discoverer = new ServiceDiscoverer(client, "/maas/discover"); |
| discoverer.start(); |
| } |
| |
| private ServiceInstance<ModelEndpoint> createInstance(ModelEndpoint ep) throws Exception { |
| URL url = new URL(ep.getEndpoint().getUrl()); |
| ServiceInstanceBuilder<ModelEndpoint> builder = ServiceInstance.<ModelEndpoint> builder() |
| .address(url.getHost()) |
| .id(ep.getContainerId()) |
| .name(ep.getName()) |
| .port(url.getPort()) |
| .registrationTimeUTC(System.currentTimeMillis()) |
| .serviceType(ServiceType.STATIC) |
| .payload(ep) |
| ; |
| return builder.build(); |
| } |
| |
| private void registerService(ModelEndpoint ep) throws Exception { |
| discoverer.getServiceDiscovery().registerService(createInstance(ep)); |
| } |
| private void registerService(String name, String version, AtomicInteger containerId) throws Exception { |
| ModelEndpoint ep = new ModelEndpoint(); |
| ep.setName(name); |
| ep.setVersion(version); |
| ep.setContainerId(containerId.incrementAndGet() + ""); |
| ep.setEndpoint(new Endpoint() {{ |
| setUrl("http://localhost:9080/ep1"); |
| }} |
| ); |
| registerService(ep); |
| } |
| @Test |
| public void testDiscovery() throws Exception { |
| //register some models |
| AtomicInteger containerId = new AtomicInteger(0); |
| registerService("casey", "3.14159", containerId); |
| registerService("casey", "3.14159", containerId); |
| registerService("casey", "3.14159", containerId); |
| registerService("casey", "3.1416", containerId); |
| //wait for zk to percolate the changes. |
| Thread.sleep(2000); |
| |
| assertEquals(3, discoverer.getEndpoints(new Model("casey", "3.14159")).size()); |
| assertEquals(1, discoverer.getEndpoints(new Model("casey", "3.1416")).size()); |
| assertEquals(0, discoverer.getEndpoints(new Model("casey", "3.17")).size()); |
| |
| discoverer.unregisterByContainer("1"); |
| Thread.sleep(2000); |
| assertEquals(2, discoverer.getEndpoints(new Model("casey", "3.14159")).size()); |
| assertEquals(1, discoverer.getEndpoints(new Model("casey", "3.1416")).size()); |
| assertEquals(0, discoverer.getEndpoints(new Model("casey", "3.17")).size()); |
| |
| assertEquals(2, discoverer.listEndpoints(new Model("casey", null)).keySet().size()); |
| assertEquals(1, discoverer.listEndpoints(new Model("casey", "3.1416")).keySet().size()); |
| assertEquals(1, discoverer.listEndpoints(new Model("casey", "3.1416")) |
| .get(new Model("casey", "3.1416")).size() |
| ); |
| assertEquals("4", discoverer.listEndpoints(new Model("casey", "3.1416")) |
| .get(new Model("casey", "3.1416")) |
| .get(0) |
| .getContainerId() |
| ); |
| assertEquals(0, discoverer.listEndpoints(new Model("casey", "3.17")).keySet().size()); |
| assertEquals(0, discoverer.listEndpoints(new Model("dummy", null)).keySet().size()); |
| |
| } |
| @AfterEach |
| public void teardown() throws Exception { |
| |
| if(discoverer != null) { |
| CloseableUtils.closeQuietly(discoverer); |
| } |
| if(client != null) { |
| CloseableUtils.closeQuietly(client); |
| } |
| if(testZkServer != null) { |
| CloseableUtils.closeQuietly(testZkServer); |
| } |
| } |
| } |