| /* |
| * 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.bookkeeper.grpc.resolver; |
| |
| import static org.apache.bookkeeper.util.BookKeeperConstants.AVAILABLE_NODE; |
| import static org.junit.Assert.assertEquals; |
| |
| import io.grpc.Attributes; |
| import io.grpc.EquivalentAddressGroup; |
| import io.grpc.NameResolver; |
| import io.grpc.NameResolver.Listener; |
| import io.grpc.Status; |
| import java.net.InetSocketAddress; |
| import java.net.SocketAddress; |
| import java.net.URI; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.stream.Collectors; |
| import lombok.Cleanup; |
| import org.apache.bookkeeper.conf.ServerConfiguration; |
| import org.apache.bookkeeper.meta.MetadataBookieDriver; |
| import org.apache.bookkeeper.meta.MetadataDrivers; |
| import org.apache.bookkeeper.stats.NullStatsLogger; |
| import org.apache.bookkeeper.test.BookKeeperClusterTestCase; |
| import org.apache.zookeeper.CreateMode; |
| import org.apache.zookeeper.ZooDefs.Ids; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| /** |
| * Unit test {@link BKRegistrationNameResolver}. |
| */ |
| public class BKRegistrationNameResolverTest extends BookKeeperClusterTestCase { |
| |
| private static final String ROOT_PATH = "/resolver-test"; |
| private static final String SERVERS_PATH = ROOT_PATH + "/servers"; |
| |
| private final BKRegistrationNameResolverProvider resolverProvider; |
| |
| private MetadataBookieDriver bookieDriver; |
| private URI serviceUri; |
| |
| public BKRegistrationNameResolverTest() { |
| super(0); |
| this.resolverProvider = new BKRegistrationNameResolverProvider(); |
| } |
| |
| @Before |
| @Override |
| public void setUp() throws Exception { |
| super.setUp(); |
| |
| zkc.transaction() |
| .create(ROOT_PATH, new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT) |
| .create(SERVERS_PATH, new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT) |
| .create(SERVERS_PATH + "/" + AVAILABLE_NODE, new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT) |
| .commit(); |
| |
| serviceUri = URI.create("zk://" + zkUtil.getZooKeeperConnectString() + SERVERS_PATH); |
| |
| |
| ServerConfiguration serverConf = new ServerConfiguration(); |
| serverConf.setMetadataServiceUri(serviceUri.toString()); |
| bookieDriver = MetadataDrivers.getBookieDriver(serviceUri); |
| bookieDriver.initialize(serverConf, () -> {}, NullStatsLogger.INSTANCE); |
| } |
| |
| @After |
| @Override |
| public void tearDown() throws Exception { |
| bookieDriver.close(); |
| |
| super.tearDown(); |
| } |
| |
| @Test |
| public void testNameResolver() throws Exception { |
| int numServers = 3; |
| |
| Set<SocketAddress> addressSet = new HashSet<>(); |
| for (int i = 0; i < numServers; i++) { |
| InetSocketAddress address = new InetSocketAddress("127.0.0.1", 3181 + i); |
| addressSet.add(address); |
| bookieDriver.getRegistrationManager().registerBookie( |
| "127.0.0.1:" + (3181 + i), false |
| ); |
| } |
| |
| LinkedBlockingQueue<List<EquivalentAddressGroup>> notifications = new LinkedBlockingQueue<>(); |
| |
| |
| @Cleanup("shutdown") |
| NameResolver resolver = resolverProvider.newNameResolver(serviceUri, Attributes.EMPTY); |
| resolver.start(new Listener() { |
| @Override |
| public void onAddresses(List<EquivalentAddressGroup> servers, Attributes attributes) { |
| notifications.add(servers); |
| } |
| |
| @Override |
| public void onError(Status error) { |
| |
| } |
| }); |
| |
| List<EquivalentAddressGroup> groups = notifications.take(); |
| assertEquals(numServers, groups.size()); |
| |
| Set<SocketAddress> receivedSet = groups.stream() |
| .map(group -> group.getAddresses().get(0)) |
| .collect(Collectors.toSet()); |
| assertEquals(addressSet, receivedSet); |
| |
| // add 3 more servers |
| |
| for (int i = numServers; i < 2 * numServers; i++) { |
| InetSocketAddress address = new InetSocketAddress("127.0.0.1", 3181 + i); |
| addressSet.add(address); |
| bookieDriver.getRegistrationManager().registerBookie( |
| "127.0.0.1:" + (3181 + i), false |
| ); |
| } |
| |
| List<EquivalentAddressGroup> notification = notifications.take(); |
| while (notification.size() < 2 * numServers) { |
| notification = notifications.take(); |
| } |
| assertEquals(2 * numServers, notification.size()); |
| receivedSet = notification.stream() |
| .map(group -> group.getAddresses().get(0)) |
| .collect(Collectors.toSet()); |
| assertEquals(addressSet, receivedSet); |
| } |
| |
| } |