| /* |
| * 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.gossip; |
| |
| import org.apache.gossip.lock.exceptions.VoteFailedException; |
| import org.apache.gossip.manager.GossipManager; |
| import org.apache.gossip.manager.GossipManagerBuilder; |
| import org.apache.gossip.model.SharedDataMessage; |
| import org.junit.Assert; |
| import org.junit.Test; |
| import org.junit.platform.runner.JUnitPlatform; |
| import org.junit.runner.RunWith; |
| |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.net.UnknownHostException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.UUID; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| @RunWith(JUnitPlatform.class) |
| public class SharedDataLockTest extends AbstractIntegrationBase { |
| |
| @Test |
| public void sharedDataLockRandomVoteTest() |
| throws InterruptedException, UnknownHostException, URISyntaxException { |
| GossipSettings settings = new GossipSettings(); |
| settings.setPersistRingState(false); |
| settings.setPersistDataState(false); |
| String cluster = UUID.randomUUID().toString(); |
| int seedNodes = 1; |
| List<Member> startupMembers = new ArrayList<>(); |
| for (int i = 1; i < seedNodes + 1; ++i) { |
| URI uri = new URI("udp://" + "127.0.0.1" + ":" + (50000 + i)); |
| startupMembers.add(new RemoteMember(cluster, uri, i + "")); |
| } |
| final List<GossipManager> clients = new ArrayList<>(); |
| final int clusterMembers = 10; |
| for (int i = 1; i < clusterMembers + 1; ++i) { |
| URI uri = new URI("udp://" + "127.0.0.1" + ":" + (50000 + i)); |
| GossipManager gossipService = GossipManagerBuilder.newBuilder().cluster(cluster).uri(uri) |
| .id(i + "").gossipMembers(startupMembers).gossipSettings(settings).build(); |
| clients.add(gossipService); |
| gossipService.getLockManager().setNumberOfNodes(clusterMembers); |
| gossipService.init(); |
| register(gossipService); |
| } |
| |
| // Adding new data to Node 1 |
| clients.get(0).gossipSharedData(sharedNodeData("category", "distributed")); |
| |
| final AtomicInteger lockSuccessCount = new AtomicInteger(0); |
| final AtomicInteger lockFailedCount = new AtomicInteger(0); |
| |
| // Node 1 try to lock on key category |
| Thread Node1LockingThread = new Thread(() -> { |
| try { |
| clients.get(0).acquireSharedDataLock("category"); |
| lockSuccessCount.incrementAndGet(); |
| } catch (VoteFailedException ignore) { |
| lockFailedCount.incrementAndGet(); |
| } |
| }); |
| |
| // Node 3 try to lock on key category |
| Thread Node3LockingThread = new Thread(() -> { |
| try { |
| clients.get(2).acquireSharedDataLock("category"); |
| lockSuccessCount.incrementAndGet(); |
| } catch (VoteFailedException ignore) { |
| lockFailedCount.incrementAndGet(); |
| } |
| }); |
| |
| // Node 6 try to lock on key category |
| Thread Node5LockingThread = new Thread(() -> { |
| try { |
| clients.get(5).acquireSharedDataLock("category"); |
| lockSuccessCount.incrementAndGet(); |
| } catch (VoteFailedException ignore) { |
| lockFailedCount.incrementAndGet(); |
| } |
| }); |
| |
| Node1LockingThread.start(); |
| Node3LockingThread.start(); |
| Node5LockingThread.start(); |
| |
| Node1LockingThread.join(); |
| Node3LockingThread.join(); |
| Node5LockingThread.join(); |
| |
| // Only one node should acquire the lock |
| Assert.assertEquals(1, lockSuccessCount.get()); |
| // Other nodes should fail |
| Assert.assertEquals(2, lockFailedCount.get()); |
| |
| } |
| |
| private SharedDataMessage sharedNodeData(String key, String value) { |
| SharedDataMessage g = new SharedDataMessage(); |
| g.setExpireAt(Long.MAX_VALUE); |
| g.setKey(key); |
| g.setPayload(value); |
| g.setTimestamp(System.currentTimeMillis()); |
| return g; |
| } |
| |
| } |