| /* |
| * 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.cassandra.gms; |
| |
| import java.util.Collections; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.junit.After; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.apache.cassandra.db.Keyspace; |
| import org.apache.cassandra.exceptions.ConfigurationException; |
| import org.apache.cassandra.locator.IEndpointSnitch; |
| import org.apache.cassandra.locator.PropertyFileSnitch; |
| import org.apache.cassandra.net.MessageIn; |
| import org.apache.cassandra.net.MessagingService; |
| import org.apache.cassandra.net.MockMessagingService; |
| import org.apache.cassandra.net.MockMessagingSpy; |
| import org.apache.cassandra.service.StorageService; |
| |
| import static org.apache.cassandra.net.MockMessagingService.verb; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| public class ShadowRoundTest |
| { |
| private static final Logger logger = LoggerFactory.getLogger(ShadowRoundTest.class); |
| |
| @BeforeClass |
| public static void setUp() throws ConfigurationException |
| { |
| System.setProperty("cassandra.config", "cassandra-seeds.yaml"); |
| |
| DatabaseDescriptor.daemonInitialization(); |
| IEndpointSnitch snitch = new PropertyFileSnitch(); |
| DatabaseDescriptor.setEndpointSnitch(snitch); |
| Keyspace.setInitialized(); |
| } |
| |
| @After |
| public void cleanup() |
| { |
| MockMessagingService.cleanup(); |
| } |
| |
| @Test |
| public void testDelayedResponse() |
| { |
| Gossiper.instance.buildSeedsList(); |
| int noOfSeeds = Gossiper.instance.seeds.size(); |
| |
| final AtomicBoolean ackSend = new AtomicBoolean(false); |
| MockMessagingSpy spySyn = MockMessagingService.when(verb(MessagingService.Verb.GOSSIP_DIGEST_SYN)) |
| .respondN((msgOut, to) -> |
| { |
| // ACK once to finish shadow round, then busy-spin until gossiper has been enabled |
| // and then reply with remaining ACKs from other seeds |
| if (!ackSend.compareAndSet(false, true)) |
| { |
| while (!Gossiper.instance.isEnabled()) ; |
| } |
| |
| HeartBeatState hb = new HeartBeatState(123, 456); |
| EndpointState state = new EndpointState(hb); |
| GossipDigestAck payload = new GossipDigestAck( |
| Collections.singletonList(new GossipDigest(to, hb.getGeneration(), hb.getHeartBeatVersion())), |
| Collections.singletonMap(to, state)); |
| |
| logger.debug("Simulating digest ACK reply"); |
| return MessageIn.create(to, payload, Collections.emptyMap(), MessagingService.Verb.GOSSIP_DIGEST_ACK, MessagingService.current_version); |
| }, noOfSeeds); |
| |
| // GossipDigestAckVerbHandler will send ack2 for each ack received (after the shadow round) |
| MockMessagingSpy spyAck2 = MockMessagingService.when(verb(MessagingService.Verb.GOSSIP_DIGEST_ACK2)).dontReply(); |
| |
| // Migration request messages should not be emitted during shadow round |
| MockMessagingSpy spyMigrationReq = MockMessagingService.when(verb(MessagingService.Verb.MIGRATION_REQUEST)).dontReply(); |
| |
| try |
| { |
| StorageService.instance.initServer(); |
| } |
| catch (Exception e) |
| { |
| assertEquals("Unable to contact any seeds!", e.getMessage()); |
| } |
| |
| // we expect one SYN for each seed during shadow round + additional SYNs after gossiper has been enabled |
| assertTrue(spySyn.messagesIntercepted > noOfSeeds); |
| |
| // we don't expect to emit any GOSSIP_DIGEST_ACK2 or MIGRATION_REQUEST messages |
| assertEquals(0, spyAck2.messagesIntercepted); |
| assertEquals(0, spyMigrationReq.messagesIntercepted); |
| } |
| } |