Source Code Cross Referenced for StateManagerTest.java in  » Net » Terracotta » com » tc » l2 » state » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Net » Terracotta » com.tc.l2.state 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * All content copyright (c) 2003-2007 Terracotta, Inc., except as may otherwise be noted in a separate copyright
003:         * notice. All rights reserved.
004:         */
005:        package com.tc.l2.state;
006:
007:        import com.tc.async.api.EventContext;
008:        import com.tc.async.api.Sink;
009:        import com.tc.async.impl.MockSink;
010:        import com.tc.l2.context.StateChangedEvent;
011:        import com.tc.l2.ha.WeightGeneratorFactory;
012:        import com.tc.l2.msg.L2StateMessage;
013:        import com.tc.lang.TCThreadGroup;
014:        import com.tc.lang.ThrowableHandler;
015:        import com.tc.logging.TCLogger;
016:        import com.tc.logging.TCLogging;
017:        import com.tc.net.groups.AbstractGroupMessage;
018:        import com.tc.net.groups.GroupEventsListener;
019:        import com.tc.net.groups.GroupManagerFactory;
020:        import com.tc.net.groups.GroupMessage;
021:        import com.tc.net.groups.GroupMessageListener;
022:        import com.tc.net.groups.Node;
023:        import com.tc.net.groups.NodeID;
024:        import com.tc.net.groups.TribesGroupManager;
025:        import com.tc.properties.TCPropertiesImpl;
026:        import com.tc.test.TCTestCase;
027:        import com.tc.util.PortChooser;
028:        import com.tc.util.State;
029:        import com.tc.util.concurrent.NoExceptionLinkedQueue;
030:        import com.tc.util.concurrent.ThreadUtil;
031:
032:        import java.io.IOException;
033:        import java.io.ObjectInput;
034:        import java.io.ObjectOutput;
035:        import java.util.Random;
036:
037:        public class StateManagerTest extends TCTestCase {
038:
039:            private static final TCLogger logger = TCLogging
040:                    .getLogger(StateManagerImpl.class);
041:            private static short portnum = 0;
042:
043:            public StateManagerTest() {
044:                // disableAllUntil("2007-05-23");
045:                useRandomMcastPort();
046:            }
047:
048:            /*
049:             * Choose a random mcast port number to avoid conflict with other LAN machines. Must be called before joinMcast.
050:             */
051:            public void useRandomMcastPort() {
052:                if (portnum == 0) {
053:                    // generate a random port number
054:                    Random r = new Random();
055:                    r.setSeed(System.currentTimeMillis());
056:                    portnum = (short) (r.nextInt(Short.MAX_VALUE - 1025) + 1024);
057:                }
058:
059:                TCPropertiesImpl.setProperty("l2.nha.tribes.mcast.mcastPort",
060:                        String.valueOf(portnum));
061:                logger.info("McastService uses random mcast port: " + portnum);
062:            }
063:
064:            public void testStateManagerTwoServers() throws Exception {
065:                // 2 nodes join concurrently
066:                TCThreadGroup threadGroup = new TCThreadGroup(
067:                        new ThrowableHandler(logger), "StateManagerTestGroup");
068:                // setup throwable ThreadGroup to catch AssertError from Tribes threads.
069:                Thread throwableThread = new Thread(threadGroup,
070:                        new Runnable() {
071:                            public void run() {
072:                                try {
073:                                    nodesConcurrentJoining(2);
074:                                } catch (Exception e) {
075:                                    throw new RuntimeException(
076:                                            "testStateManagerTwoServers failed!");
077:                                }
078:                            }
079:                        });
080:                throwableThread.start();
081:                throwableThread.join();
082:            }
083:
084:            public void testStateManagerThreeServers() throws Exception {
085:                // 3 nodes join concurrently
086:                TCThreadGroup threadGroup = new TCThreadGroup(
087:                        new ThrowableHandler(logger), "StateManagerTestGroup");
088:                // setup throwable ThreadGroup to catch AssertError from Tribes threads.
089:                Thread throwableThread = new Thread(threadGroup,
090:                        new Runnable() {
091:                            public void run() {
092:                                try {
093:                                    nodesConcurrentJoining(3);
094:                                } catch (Exception e) {
095:                                    throw new RuntimeException(
096:                                            "testStateManagerThreeServers failed!");
097:                                }
098:                            }
099:                        });
100:                throwableThread.start();
101:                throwableThread.join();
102:            }
103:
104:            public void testStateManagerSixServers() throws Exception {
105:                // 6 nodes join concurrently
106:                TCThreadGroup threadGroup = new TCThreadGroup(
107:                        new ThrowableHandler(logger), "StateManagerTestGroup");
108:                // setup throwable ThreadGroup to catch AssertError from Tribes threads.
109:                Thread throwableThread = new Thread(threadGroup,
110:                        new Runnable() {
111:                            public void run() {
112:                                try {
113:                                    nodesConcurrentJoining(6);
114:                                } catch (Exception e) {
115:                                    throw new RuntimeException(
116:                                            "testStateManagerSixServers failed!");
117:                                }
118:                            }
119:                        });
120:                throwableThread.start();
121:                throwableThread.join();
122:            }
123:
124:            public void testStateManagerMixJoinAndElect3() throws Exception {
125:                // 3 nodes mix join and election
126:                TCThreadGroup threadGroup = new TCThreadGroup(
127:                        new ThrowableHandler(logger), "StateManagerTestGroup");
128:                // setup throwable ThreadGroup to catch AssertError from Tribes threads.
129:                Thread throwableThread = new Thread(threadGroup,
130:                        new Runnable() {
131:                            public void run() {
132:                                try {
133:                                    nodesMixJoinAndElect(3);
134:                                } catch (Exception e) {
135:                                    throw new RuntimeException(
136:                                            "testStateManagerMixJoinAndElect3 failed!");
137:                                }
138:                            }
139:                        });
140:                throwableThread.start();
141:                throwableThread.join();
142:            }
143:
144:            public void testStateManagerMixJoinAndElect6() throws Exception {
145:                // 6 nodes mix join and election
146:                TCThreadGroup threadGroup = new TCThreadGroup(
147:                        new ThrowableHandler(logger), "StateManagerTestGroup");
148:                // setup throwable ThreadGroup to catch AssertError from Tribes threads.
149:                Thread throwableThread = new Thread(threadGroup,
150:                        new Runnable() {
151:                            public void run() {
152:                                try {
153:                                    nodesMixJoinAndElect(6);
154:                                } catch (Exception e) {
155:                                    throw new RuntimeException(
156:                                            "testStateManagerMixJoinAndElect6 failed!");
157:                                }
158:                            }
159:                        });
160:                throwableThread.start();
161:                throwableThread.join();
162:            }
163:
164:            public void testStateManagerJoinLater3() throws Exception {
165:                // first node shall be active and remaining 5 nodes join later
166:                TCThreadGroup threadGroup = new TCThreadGroup(
167:                        new ThrowableHandler(logger), "StateManagerTestGroup");
168:                // setup throwable ThreadGroup to catch AssertError from Tribes threads.
169:                Thread throwableThread = new Thread(threadGroup,
170:                        new Runnable() {
171:                            public void run() {
172:                                try {
173:                                    nodesJoinLater(3);
174:                                } catch (Exception e) {
175:                                    throw new RuntimeException(
176:                                            "testStateManagerJoinLater3 failed!");
177:                                }
178:                            }
179:                        });
180:                throwableThread.start();
181:                throwableThread.join();
182:            }
183:
184:            public void testStateManagerJoinLater6() throws Exception {
185:                // first node shall be active and remaining 5 nodes join later
186:                TCThreadGroup threadGroup = new TCThreadGroup(
187:                        new ThrowableHandler(logger), "StateManagerTestGroup");
188:                // setup throwable ThreadGroup to catch AssertError from Tribes threads.
189:                Thread throwableThread = new Thread(threadGroup,
190:                        new Runnable() {
191:                            public void run() {
192:                                try {
193:                                    nodesJoinLater(6);
194:                                } catch (Exception e) {
195:                                    throw new RuntimeException(
196:                                            "testStateManagerJoinLater6 failed!");
197:                                }
198:                            }
199:                        });
200:                throwableThread.start();
201:                throwableThread.join();
202:            }
203:
204:            // -----------------------------------------------------------------------
205:
206:            private void nodesConcurrentJoining(int nodes) throws Exception {
207:                System.out.println("*** Testing " + nodes
208:                        + " nodes join at same time.");
209:
210:                TribesGroupManager[] groupMgr = new TribesGroupManager[nodes];
211:                ChangeSink[] sinks = new ChangeSink[nodes];
212:                PortChooser pc = new PortChooser();
213:                int[] ports = new int[nodes];
214:                Node[] allNodes = new Node[nodes];
215:                for (int i = 0; i < nodes; ++i) {
216:                    ports[i] = pc.chooseRandomPort();
217:                    allNodes[i] = new Node("localhost", ports[i]);
218:                }
219:
220:                StateManager[] managers = new StateManager[nodes];
221:                ElectionThread[] elections = new ElectionThread[nodes];
222:                L2StateMessageStage[] msgStage = new L2StateMessageStage[nodes];
223:                for (int i = 0; i < nodes; ++i) {
224:                    managers[i] = createStateManageNode(i, sinks, groupMgr,
225:                            msgStage);
226:                    elections[i] = new ElectionThread(managers[i]);
227:                }
228:
229:                // joining
230:                System.out.println("*** Start Joining...");
231:                for (int i = 0; i < nodes; ++i) {
232:                    groupMgr[i].join(allNodes[i], allNodes);
233:                }
234:
235:                System.out.println("*** Start Election...");
236:                // run them concurrently
237:                for (int i = 0; i < nodes; ++i) {
238:                    elections[i].start();
239:                }
240:                for (int i = 0; i < nodes; ++i) {
241:                    elections[i].join();
242:                }
243:
244:                Thread.sleep(1000);
245:                // verification
246:                int activeCount = 0;
247:                for (int i = 0; i < nodes; ++i) {
248:                    boolean active = managers[i].isActiveCoordinator();
249:                    if (active)
250:                        ++activeCount;
251:                    System.out.println("*** Server[" + i + "] state is "
252:                            + sinks[i]);
253:                }
254:                assertEquals("Active coordinator", 1, activeCount);
255:
256:                shutdown(groupMgr, msgStage);
257:            }
258:
259:            private void shutdown(TribesGroupManager[] groupMgr,
260:                    L2StateMessageStage[] msgStage) {
261:                // shut them down
262:                shutdown(groupMgr, msgStage, 0, groupMgr.length);
263:            }
264:
265:            private void shutdown(TribesGroupManager[] groupMgr,
266:                    L2StateMessageStage[] msgStage, int start, int end) {
267:                for (int i = start; i < end; ++i) {
268:                    try {
269:                        msgStage[i].requestStop();
270:                        ThreadUtil.reallySleep(100);
271:                        groupMgr[i].stop();
272:                    } catch (Exception ex) {
273:                        System.out.println("*** Failed to stop Server[" + i
274:                                + "] " + groupMgr[i] + " " + ex);
275:                    }
276:                }
277:                System.out.println("*** shutdown done");
278:            }
279:
280:            private void nodesMixJoinAndElect(int nodes) throws Exception {
281:                System.out.println("*** Testing " + nodes
282:                        + " nodes mixed join and election at same time.");
283:
284:                TribesGroupManager[] groupMgr = new TribesGroupManager[nodes];
285:                ChangeSink[] sinks = new ChangeSink[nodes];
286:                PortChooser pc = new PortChooser();
287:                int[] ports = new int[nodes];
288:                Node[] allNodes = new Node[nodes];
289:                for (int i = 0; i < nodes; ++i) {
290:                    ports[i] = pc.chooseRandomPort();
291:                    allNodes[i] = new Node("localhost", ports[i]);
292:                }
293:
294:                StateManager[] managers = new StateManager[nodes];
295:                ElectionThread[] elections = new ElectionThread[nodes];
296:                L2StateMessageStage[] msgStage = new L2StateMessageStage[nodes];
297:                for (int i = 0; i < nodes; ++i) {
298:                    managers[i] = createStateManageNode(i, sinks, groupMgr,
299:                            msgStage);
300:                    elections[i] = new ElectionThread(managers[i]);
301:                }
302:
303:                // Joining and Electing
304:                System.out.println("*** Start Joining and Electing...");
305:                groupMgr[0].join(allNodes[0], allNodes);
306:                for (int i = 0; i < nodes - 1; ++i) {
307:                    elections[i].start();
308:                    groupMgr[i + 1].join(allNodes[i + 1], allNodes);
309:                }
310:                elections[nodes - 1].start();
311:
312:                for (int i = 0; i < nodes; ++i) {
313:                    elections[i].join();
314:                }
315:
316:                Thread.sleep(1000);
317:                // verification
318:                int activeCount = 0;
319:                for (int i = 0; i < nodes; ++i) {
320:                    boolean active = managers[i].isActiveCoordinator();
321:                    if (active)
322:                        ++activeCount;
323:                    System.out.println("*** Server[" + i + "] state is "
324:                            + sinks[i]);
325:                }
326:                assertEquals("Active coordinator", 1, activeCount);
327:
328:                shutdown(groupMgr, msgStage);
329:            }
330:
331:            private void nodesJoinLater(int nodes) throws Exception {
332:                System.out.println("*** Testing " + nodes
333:                        + " nodes join at later time.");
334:
335:                NodeID[] ids = new NodeID[nodes];
336:                ChangeSink[] sinks = new ChangeSink[nodes];
337:                TribesGroupManager[] groupMgr = new TribesGroupManager[nodes];
338:                PortChooser pc = new PortChooser();
339:                int[] ports = new int[nodes];
340:                Node[] allNodes = new Node[nodes];
341:                for (int i = 0; i < nodes; ++i) {
342:                    ports[i] = pc.chooseRandomPort();
343:                    allNodes[i] = new Node("localhost", ports[i]);
344:                }
345:
346:                final StateManager[] managers = new StateManager[nodes];
347:                ElectionThread[] elections = new ElectionThread[nodes];
348:                L2StateMessageStage[] msgStage = new L2StateMessageStage[nodes];
349:                for (int i = 0; i < nodes; ++i) {
350:                    managers[i] = createStateManageNode(i, sinks, groupMgr,
351:                            msgStage);
352:                    elections[i] = new ElectionThread(managers[i]);
353:                }
354:
355:                // the first node to be the active one
356:                System.out
357:                        .println("*** First node joins to be an active node...");
358:                ids[0] = groupMgr[0].join(allNodes[0], allNodes);
359:                managers[0].startElection();
360:                Thread.sleep(100);
361:
362:                // move following join nodes to passive-standby
363:                groupMgr[0].registerForGroupEvents(new MyGroupEventListener() {
364:                    public void nodeJoined(NodeID nodeID) {
365:                        System.out.println("*** moveNodeToPassiveStandby -> "
366:                                + nodeID);
367:                        managers[0].moveNodeToPassiveStandby(nodeID);
368:                        // managers[0].publishActiveState(nodeID);
369:                    }
370:                });
371:
372:                System.out.println("***  Remaining nodes join");
373:                for (int i = 1; i < nodes; ++i) {
374:                    ids[i] = groupMgr[i].join(allNodes[i], allNodes);
375:                }
376:
377:                Thread.sleep(1000);
378:                // verification: first node must be active
379:                int activeCount = 0;
380:                for (int i = 0; i < nodes; ++i) {
381:                    boolean active = managers[i].isActiveCoordinator();
382:                    if (active)
383:                        ++activeCount;
384:                    System.out.println("*** Server[" + i + "] state is "
385:                            + sinks[i]);
386:                }
387:                assertEquals("Active coordinator", 1, activeCount);
388:                assertTrue("Node-0 must be active coordinator", managers[0]
389:                        .isActiveCoordinator());
390:
391:                // check API
392:                try {
393:                    // active is supported not to move itself to passive stand-by
394:                    managers[0].moveNodeToPassiveStandby(ids[0]);
395:                    throw new RuntimeException(
396:                            "moveNodeToPassiveStandy expected to trows an expection");
397:                } catch (Exception x) {
398:                    // expected
399:                }
400:
401:                System.out.println("*** Stop active and re-elect");
402:                // stop active node
403:                shutdown(groupMgr, msgStage, 0, 1);
404:
405:                ElectionIfNecessaryThread reElectThreads[] = new ElectionIfNecessaryThread[nodes];
406:                for (int i = 1; i < nodes; ++i) {
407:                    reElectThreads[i] = new ElectionIfNecessaryThread(
408:                            managers[i], ids[0]);
409:                }
410:                for (int i = 1; i < nodes; ++i) {
411:                    reElectThreads[i].start();
412:                }
413:                for (int i = 1; i < nodes; ++i) {
414:                    reElectThreads[i].join();
415:                }
416:                Thread.sleep(1000);
417:
418:                // verify
419:                activeCount = 0;
420:                for (int i = 1; i < nodes; ++i) {
421:                    boolean active = managers[i].isActiveCoordinator();
422:                    if (active)
423:                        ++activeCount;
424:                    System.out.println("*** Server[" + i + "] ("
425:                            + (active ? "active" : "non-active") + ")state is "
426:                            + sinks[i]);
427:                }
428:                assertEquals("Active coordinator", 1, activeCount);
429:
430:                // shut them down
431:                shutdown(groupMgr, msgStage, 1, nodes);
432:            }
433:
434:            private StateManager createStateManageNode(int localIndex,
435:                    ChangeSink[] sinks, TribesGroupManager[] groupMgr,
436:                    L2StateMessageStage[] messageStage) throws Exception {
437:
438:                TribesGroupManager gm = (TribesGroupManager) GroupManagerFactory
439:                        .createGroupManager();
440:                groupMgr[localIndex] = gm;
441:                MyGroupEventListener gel = new MyGroupEventListener();
442:                MyListener l = new MyListener();
443:                gm.registerForMessages(TestMessage.class, l);
444:                gm.registerForGroupEvents(gel);
445:                sinks[localIndex] = new ChangeSink(localIndex);
446:                MyStateManagerConfig config = new MyStateManagerConfig();
447:                config.electionTime = 5;
448:                StateManager mgr = new StateManagerImpl(logger, gm,
449:                        sinks[localIndex], config, WeightGeneratorFactory
450:                                .createDefaultFactory());
451:                messageStage[localIndex] = new L2StateMessageStage(mgr);
452:                gm.routeMessages(L2StateMessage.class, messageStage[localIndex]
453:                        .getSink());
454:                messageStage[localIndex].start();
455:                return (mgr);
456:            }
457:
458:            private static class L2StateMessageStage extends Thread {
459:                private final MockSink sink;
460:                private final NoExceptionLinkedQueue processQ = new NoExceptionLinkedQueue();
461:                private final StateManager mgr;
462:                private volatile boolean stop = false;
463:
464:                public L2StateMessageStage(StateManager mgr) {
465:                    this .mgr = mgr;
466:                    this .sink = new MockSink() {
467:                        public void add(EventContext ec) {
468:                            processQ.put(ec);
469:                        }
470:                    };
471:                    setDaemon(true);
472:                    setName("L2StateMessageStageThread");
473:                }
474:
475:                public synchronized void requestStop() {
476:                    stop = true;
477:                }
478:
479:                public synchronized boolean isStopped() {
480:                    return stop;
481:                }
482:
483:                public Sink getSink() {
484:                    return sink;
485:                }
486:
487:                public void run() {
488:                    while (!isStopped()) {
489:                        L2StateMessage m = (L2StateMessage) processQ.poll(3000);
490:                        if (m != null) {
491:                            mgr.handleClusterStateMessage(m);
492:                        }
493:                    }
494:                }
495:            }
496:
497:            private static class ElectionThread extends Thread {
498:                private StateManager mgr;
499:
500:                public ElectionThread(StateManager mgr) {
501:                    setMgr(mgr);
502:                }
503:
504:                public void setMgr(StateManager mgr) {
505:                    this .mgr = mgr;
506:                }
507:
508:                public void run() {
509:                    mgr.startElection();
510:                }
511:            }
512:
513:            private static class MyStateManagerConfig implements 
514:                    StateManagerConfig {
515:                public int electionTime;
516:
517:                public int getElectionTimeInSecs() {
518:                    return electionTime;
519:                }
520:            }
521:
522:            private static class ElectionIfNecessaryThread extends Thread {
523:                private StateManager mgr;
524:                private NodeID disconnectedNode;
525:
526:                public ElectionIfNecessaryThread(StateManager mgr,
527:                        NodeID disconnectedNode) {
528:                    this .mgr = mgr;
529:                    this .disconnectedNode = disconnectedNode;
530:                }
531:
532:                public void run() {
533:                    mgr.startElectionIfNecessary(disconnectedNode);
534:                }
535:            }
536:
537:            private static class ChangeSink extends MockSink {
538:                private int serverIndex;
539:                private StateChangedEvent event = null;
540:
541:                public ChangeSink(int index) {
542:                    serverIndex = index;
543:                }
544:
545:                public void add(EventContext context) {
546:                    event = (StateChangedEvent) context;
547:                    System.out.println("*** Server[" + serverIndex + "]: "
548:                            + event);
549:                }
550:
551:                public State getState() {
552:                    if (event == null)
553:                        return null;
554:                    return event.getCurrentState();
555:                }
556:
557:                public String toString() {
558:                    State st = getState();
559:                    return ((st != null) ? st.toString() : "<state unknown>");
560:                }
561:
562:            }
563:
564:            private static class MyGroupEventListener implements 
565:                    GroupEventsListener {
566:
567:                private NodeID lastNodeJoined;
568:                private NodeID lastNodeLeft;
569:
570:                public void nodeJoined(NodeID nodeID) {
571:                    System.err.println("\n### nodeJoined -> " + nodeID);
572:                    lastNodeJoined = nodeID;
573:                }
574:
575:                public void nodeLeft(NodeID nodeID) {
576:                    System.err.println("\n### nodeLeft -> " + nodeID);
577:                    lastNodeLeft = nodeID;
578:                }
579:
580:                public NodeID getLastNodeJoined() {
581:                    return lastNodeJoined;
582:                }
583:
584:                public NodeID getLastNodeLeft() {
585:                    return lastNodeLeft;
586:                }
587:
588:                public void reset() {
589:                    lastNodeJoined = lastNodeLeft = null;
590:                }
591:            }
592:
593:            private static final class MyListener implements 
594:                    GroupMessageListener {
595:
596:                NoExceptionLinkedQueue queue = new NoExceptionLinkedQueue();
597:
598:                public void messageReceived(NodeID fromNode, GroupMessage msg) {
599:                    queue.put(msg);
600:                }
601:
602:                public GroupMessage take() {
603:                    return (GroupMessage) queue.take();
604:                }
605:
606:            }
607:
608:            private static final class TestMessage extends AbstractGroupMessage {
609:
610:                // to make serialization sane
611:                public TestMessage() {
612:                    super (0);
613:                }
614:
615:                public TestMessage(String message) {
616:                    super (0);
617:                    this .msg = message;
618:                }
619:
620:                String msg;
621:
622:                protected void basicReadExternal(int msgType, ObjectInput in)
623:                        throws IOException {
624:                    msg = in.readUTF();
625:
626:                }
627:
628:                protected void basicWriteExternal(int msgType, ObjectOutput out)
629:                        throws IOException {
630:                    out.writeUTF(msg);
631:
632:                }
633:
634:                public int hashCode() {
635:                    return msg.hashCode();
636:                }
637:
638:                public boolean equals(Object o) {
639:                    if (o instanceof  TestMessage) {
640:                        TestMessage other = (TestMessage) o;
641:                        return this .msg.equals(other.msg);
642:                    }
643:                    return false;
644:                }
645:
646:                public String toString() {
647:                    return "TestMessage [ " + msg + "]";
648:                }
649:            }
650:
651:        }
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