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Support multi-host for pulsar-admin (apache#4018)
*Motivation* Sometimes the user might have many pulsar brokers but doesn't user load balancer or DNS. So we need support multi-host for pulsar-admin. *Modifications* Use `PulsarServiceNameResolver` to resolve it.
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...integration/src/test/java/org/apache/pulsar/tests/integration/cli/AdminMultiHostTest.java
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| /** | ||
| * 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.pulsar.tests.integration.cli; | ||
|
|
||
| import java.util.UUID; | ||
| import java.util.concurrent.Callable; | ||
| import java.util.concurrent.ExecutionException; | ||
| import java.util.concurrent.FutureTask; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.concurrent.TimeoutException; | ||
| import org.apache.pulsar.client.admin.PulsarAdmin; | ||
| import org.apache.pulsar.tests.integration.containers.BrokerContainer; | ||
| import org.apache.pulsar.tests.integration.topologies.PulsarCluster; | ||
| import org.apache.pulsar.tests.integration.topologies.PulsarClusterSpec; | ||
| import org.testng.Assert; | ||
| import org.testng.annotations.AfterMethod; | ||
| import org.testng.annotations.BeforeMethod; | ||
| import org.testng.annotations.Test; | ||
|
|
||
| /** | ||
| * Test for admin service url is multi host. | ||
| */ | ||
| public class AdminMultiHostTest { | ||
|
|
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| private final String clusterName = "MultiHostTest-" + UUID.randomUUID(); | ||
| private final PulsarClusterSpec spec = PulsarClusterSpec.builder().clusterName(clusterName).numBrokers(3).build(); | ||
| private PulsarCluster pulsarCluster = null; | ||
|
|
||
| @BeforeMethod | ||
| public void setupCluster() throws Exception { | ||
| pulsarCluster = PulsarCluster.forSpec(spec); | ||
| pulsarCluster.start(); | ||
| } | ||
|
|
||
| @AfterMethod | ||
| public void tearDownCluster() { | ||
| if (pulsarCluster != null) { | ||
| pulsarCluster.stop(); | ||
| pulsarCluster = null; | ||
| } | ||
| } | ||
|
|
||
| @Test | ||
| public void testAdminMultiHost() throws Exception { | ||
| String hosts = pulsarCluster.getAllBrokersHttpServiceUrl(); | ||
| PulsarAdmin admin = PulsarAdmin.builder().serviceHttpUrl(hosts).build(); | ||
| // all brokers alive | ||
| Assert.assertEquals(admin.brokers().getActiveBrokers(clusterName).size(), 3); | ||
|
|
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| // kill one broker admin should be usable | ||
| BrokerContainer one = pulsarCluster.getBroker(0); | ||
| // admin.brokers(). | ||
| one.stop(); | ||
| waitBrokerDown(admin, 2, 60); | ||
| Assert.assertEquals(admin.brokers().getActiveBrokers(clusterName).size(), 2); | ||
|
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| // kill another broker | ||
| BrokerContainer two = pulsarCluster.getBroker(1); | ||
| two.stop(); | ||
| waitBrokerDown(admin, 1, 60); | ||
| Assert.assertEquals(admin.brokers().getActiveBrokers(clusterName).size(), 1); | ||
| } | ||
|
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| // Because zookeeper session timeout is 30ms and ticktime is 2ms, so we need wait more than 32ms | ||
| private void waitBrokerDown(PulsarAdmin admin, int expectBrokers, int timeout) | ||
| throws InterruptedException, ExecutionException, TimeoutException { | ||
| FutureTask<Boolean> futureTask = new FutureTask<>(new Callable<Boolean>() { | ||
| @Override | ||
| public Boolean call() throws Exception { | ||
| while (admin.brokers().getActiveBrokers(clusterName).size() != expectBrokers) { | ||
| admin.brokers().healthcheck(); | ||
| TimeUnit.MILLISECONDS.sleep(1000); | ||
| } | ||
| return true; | ||
| } | ||
| }); | ||
| new Thread(futureTask).start(); | ||
| futureTask.get(timeout, TimeUnit.SECONDS); | ||
| } | ||
| } |
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