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1
5 package com.tctest;
6
7 import org.apache.commons.io.FileUtils;
8
9 import EDU.oswego.cs.dl.util.concurrent.CyclicBarrier;
10 import EDU.oswego.cs.dl.util.concurrent.SynchronizedInt;
11
12 import com.tc.cluster.ClusterEventListener;
13 import com.tc.object.bytecode.ManagerUtil;
14 import com.tc.objectserver.control.ExtraL1ProcessControl;
15 import com.tc.simulator.app.ApplicationConfig;
16 import com.tc.simulator.listener.ListenerProvider;
17
18 import java.io.File  ;
19 import java.util.HashSet ;
20
21 public class ClusterMembershipEventTestApp extends ServerCrashingAppBase implements ClusterEventListener {
22
23 public ClusterMembershipEventTestApp(String appId, ApplicationConfig config, ListenerProvider listenerProvider) {
24 super(appId, config, listenerProvider);
25 }
26
27 private final int initialNodeCount = getParticipantCount();
28 private final CyclicBarrier barrier = new CyclicBarrier(initialNodeCount);
29
30 private final SynchronizedInt nodeConCnt = new SynchronizedInt(0);
32 private final SynchronizedInt nodeDisCnt = new SynchronizedInt(0);
33 private final SynchronizedInt thisNodeConCnt = new SynchronizedInt(0);
34 private final SynchronizedInt thisNodeDisCnt = new SynchronizedInt(0);
35 private final HashSet nodes = new HashSet ();
36 private String thisNode;
37
38 public void run() {
39 try {
40 runTest();
41 } catch (Throwable t) {
42 notifyError(t);
43 }
44 }
45
46 private void runTest() throws Throwable {
47 ManagerUtil.addClusterEventListener(this);
48 check(1, thisNodeConCnt.get(), "thisNodeConnected");
49 waitForNodes(initialNodeCount);
50
51 System.err.println("### stage 1 [all nodes connected]: thisNode=" + thisNode + ", threadId="
52 + Thread.currentThread().getName());
53
54 clearCounters();
55 final boolean isMasterNode = barrier.barrier() == 0;
56 if (isMasterNode) {
57 System.err.println("### masterNode=" + thisNode + " -> crashing server...");
58 getConfig().getServerControl().crash();
59 System.err.println("### masterNode=" + thisNode + " -> crashed server");
60 System.err.println("### masterNode=" + thisNode + " -> restarting server...");
61 getConfig().getServerControl().start(30 * 1000);
62 System.err.println("### masterNode=" + thisNode + " -> restarted server");
63 }
64 System.err.println("### stage 2 [reconnecting]: thisNode=" + thisNode + ", threadId="
65 + Thread.currentThread().getName());
66 barrier.barrier();
67 waitForNodes(initialNodeCount);
68 check(1, thisNodeDisCnt.get(), "thisNodeDisconnected");
69 check(1, thisNodeConCnt.get(), "thisNodeConnected");
70
71 clearCounters();
72 check(0, nodeConCnt.get(), "nodeConnected");
73 check(0, nodeDisCnt.get(), "nodeDisconnected");
74 barrier.barrier();
75 System.err.println("### stage 3 [reconnected]: thisNode=" + thisNode + ", threadId="
76 + Thread.currentThread().getName());
77
78 if (isMasterNode) {
79 spawnNewClient();
81 }
82 barrier.barrier();
83 System.err.println("### stage 4 [new client disconnected]: thisNode=" + thisNode + ", threadId="
84 + Thread.currentThread().getName());
85
86 waitForNodes(initialNodeCount);
87 check(1, nodeConCnt.get(), "nodeConnected");
88 check(1, nodeDisCnt.get(), "nodeDisconnected");
89 clearCounters();
90 barrier.barrier();
91 System.err.println("### stage 5 [all done]: thisNode=" + thisNode + ", threadId="
92 + Thread.currentThread().getName());
93 }
94
95 private void clearCounters() {
96 this.nodeConCnt.set(0);
97 this.nodeDisCnt.set(0);
98 this.thisNodeConCnt.set(0);
99 this.thisNodeDisCnt.set(0);
100 }
101
102 private void waitForNodes(int expectedSize) {
103 while (true) {
104 synchronized (nodes) {
105 if (nodes.size() == expectedSize) break;
106 try {
107 nodes.wait();
108 } catch (InterruptedException e) {
109 notifyError(e);
110 }
111 }
112 }
113 }
114
115 private void check(int expectedMin, int actual, String msg) {
116 if (actual < expectedMin) notifyError(msg + " expectedMin=" + expectedMin + ", actual=" + actual + ", thisNodeId="
119 + thisNode);
120 }
121
122 public void nodeConnected(String nodeId) {
123 new Throwable ("### TRACE: ClusterMembershipEventTestApp.nodeConnected()").printStackTrace();
124 nodeConCnt.increment();
125 System.err.println("\n### nodeConnected: thisNode=" + thisNode + ", nodeId=" + nodeId + ", threadId="
126 + Thread.currentThread().getName() + ", cnt=" + nodeConCnt.get());
127 synchronized (nodes) {
128 nodes.add(nodeId);
129 nodes.notifyAll();
130 }
131 }
132
133 public void nodeDisconnected(String nodeId) {
134 new Throwable ("### TRACE: ClusterMembershipEventTestApp.nodeDisconnected()").printStackTrace();
135 nodeDisCnt.increment();
136 System.err.println("\n### nodeDisconnected: thisNode=" + thisNode + ", nodeId=" + nodeId + ", threadId="
137 + Thread.currentThread().getName() + ", cnt=" + nodeDisCnt.get());
138 synchronized (nodes) {
139 nodes.remove(nodeId);
140 nodes.notifyAll();
141 }
142 }
143
144 public void thisNodeConnected(String thisNodeId, String [] nodesCurrentlyInCluster) {
145 new Throwable ("### TRACE: ClusterMembershipEventTestApp.thisNodeConnected()").printStackTrace();
146 thisNodeConCnt.increment();
147 thisNode = thisNodeId;
148 System.err.println("\n### thisNodeConnected->thisNodeId=" + thisNodeId + ", threadId="
149 + Thread.currentThread().getName() + ", cnt=" + thisNodeConCnt.get());
150 synchronized (nodes) {
151 nodes.add(thisNode);
152 for (int i = 0; i < nodesCurrentlyInCluster.length; i++) {
153 nodes.add(nodesCurrentlyInCluster[i]);
154 }
155 nodes.notifyAll();
156 }
157 }
158
159 public void thisNodeDisconnected(String thisNodeId) {
160 new Throwable ("### TRACE: ClusterMembershipEventTestApp.thisNodeDisconnected()").printStackTrace();
161 thisNodeDisCnt.increment();
162 System.err.println("\n### thisNodeDisconnected->thisNodeId=" + thisNodeId + ", threadId="
163 + Thread.currentThread().getName() + ", cnt=" + thisNodeDisCnt.get());
164 synchronized (nodes) {
165 nodes.clear();
166 nodes.notifyAll();
167 }
168 }
169
170 public static class L1Client {
171 public static void main(String args[]) {
172 }
174 }
175
176 private ExtraL1ProcessControl spawnNewClient() throws Exception {
177 final String hostName = getHostName();
178 final int port = getPort();
179 final File configFile = new File (getConfigFilePath());
180 File workingDir = new File (configFile.getParentFile(), "client-0");
181 FileUtils.forceMkdir(workingDir);
182
183 ExtraL1ProcessControl client = new ExtraL1ProcessControl(hostName, port, L1Client.class, configFile
184 .getAbsolutePath(), new String [0], workingDir);
185 client.start(20000);
186 client.mergeSTDERR();
187 client.mergeSTDOUT();
188 client.waitFor();
189 System.err.println("\n### Started New Client");
190 return client;
191 }
192
193 }
194
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