Example usage for org.apache.zookeeper WatchedEvent getPath

Introduction

In this page you can find the example usage for org.apache.zookeeper WatchedEvent getPath.

Prototype

public String getPath() 

Source Link

Usage

From source file:org.apache.accumulo.server.security.delegation.ZooAuthenticationKeyWatcherTest.java

License:Apache License

@Test
public void testChildChanged() throws Exception {
    WatchedEvent event = new WatchedEvent(EventType.NodeCreated, null, baseNode + "/2");
    AuthenticationKey key1 = new AuthenticationKey(1, 0l, 10000l, keyGen.generateKey()),
            key2 = new AuthenticationKey(2, key1.getExpirationDate(), 20000l, keyGen.generateKey());
    secretManager.addKey(key1);//from  ww w  .  ja v  a 2 s . c  om
    assertEquals(1, secretManager.getKeys().size());
    byte[] serializedKey2 = serialize(key2);

    expect(zk.getData(event.getPath(), keyWatcher, null)).andReturn(serializedKey2);
    replay(instance, zk);

    keyWatcher.process(event);

    verify(instance, zk);
    assertEquals(2, secretManager.getKeys().size());
    assertEquals(key1, secretManager.getKeys().get(key1.getKeyId()));
    assertEquals(key2, secretManager.getKeys().get(key2.getKeyId()));
    assertEquals(key2, secretManager.getCurrentKey());
}

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From source file:org.apache.accumulo.server.trace.TraceServer.java

License:Apache License

@Override
public void process(WatchedEvent event) {
    log.debug("event " + event.getPath() + " " + event.getType() + " " + event.getState());
    if (event.getState() == KeeperState.Expired) {
        log.warn("Trace server lost zookeeper registration at " + event.getPath());
        server.stop();/*w ww  .j a v  a 2 s .  c  o  m*/
    } else if (event.getType() == EventType.NodeDeleted) {
        log.warn("Trace server zookeeper entry lost " + event.getPath());
        server.stop();
    }
    if (event.getPath() != null) {
        try {
            if (ZooReaderWriter.getInstance().exists(event.getPath(), this))
                return;
        } catch (Exception ex) {
            log.error(ex, ex);
        }
        log.warn("Trace server unable to reset watch on zookeeper registration");
        server.stop();
    }
}

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From source file:org.apache.accumulo.server.watcher.MonitorLog4jWatcher.java

License:Apache License

@Override
public void process(WatchedEvent event) {
    // We got an update, process the data in the node
    updateMonitorLog4jLocation();//from w  ww . j  a v a 2  s .com

    if (event.getPath() != null) {
        try {
            ZooReaderWriter.getInstance().exists(event.getPath(), this);
        } catch (Exception ex) {
            log.error("Unable to reset watch for Monitor Log4j watcher", ex);
        }
    }
}

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From source file:org.apache.accumulo.server.zookeeper.DistributedWorkQueue.java

License:Apache License

public void startProcessing(final Processor processor, ThreadPoolExecutor executorService)
        throws KeeperException, InterruptedException {

    threadPool = executorService;/*w  w  w  . ja v  a  2 s . c  om*/

    zoo.mkdirs(path);
    zoo.mkdirs(path + "/" + LOCKS_NODE);

    List<String> children = zoo.getChildren(path, new Watcher() {
        @Override
        public void process(WatchedEvent event) {
            switch (event.getType()) {
            case NodeChildrenChanged:
                if (event.getPath().equals(path))
                    try {
                        lookForWork(processor, zoo.getChildren(path, this));
                    } catch (KeeperException e) {
                        log.error("Failed to look for work", e);
                    } catch (InterruptedException e) {
                        log.info("Interrupted looking for work", e);
                    }
                else
                    log.info("Unexpected path for NodeChildrenChanged event " + event.getPath());
                break;
            case NodeCreated:
            case NodeDataChanged:
            case NodeDeleted:
            case None:
                log.info("Got unexpected zookeeper event: " + event.getType() + " for " + path);
                break;

            }
        }
    });

    lookForWork(processor, children);

    // Add a little jitter to avoid all the tservers slamming zookeeper at once
    SimpleTimer.getInstance(config).schedule(new Runnable() {
        @Override
        public void run() {
            log.debug("Looking for work in " + path);
            try {
                lookForWork(processor, zoo.getChildren(path));
            } catch (KeeperException e) {
                log.error("Failed to look for work", e);
            } catch (InterruptedException e) {
                log.info("Interrupted looking for work", e);
            }
        }
    }, timerInitialDelay, timerPeriod);
}

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From source file:org.apache.accumulo.tracer.TraceServer.java

License:Apache License

@Override
public void process(WatchedEvent event) {
    log.debug("event " + event.getPath() + " " + event.getType() + " " + event.getState());
    if (event.getState() == KeeperState.Expired) {
        log.warn("Trace server lost zookeeper registration at " + event.getPath());
        server.stop();//from w  w  w  .  j  a v  a2s  .  co  m
    } else if (event.getType() == EventType.NodeDeleted) {
        log.warn("Trace server zookeeper entry lost " + event.getPath());
        server.stop();
    }
    if (event.getPath() != null) {
        try {
            if (ZooReaderWriter.getInstance().exists(event.getPath(), this))
                return;
        } catch (Exception ex) {
            log.error("{}", ex.getMessage(), ex);
        }
        log.warn("Trace server unable to reset watch on zookeeper registration");
        server.stop();
    }
}

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From source file:org.apache.airavata.gfac.core.cpi.BetterGfacImpl.java

License:Apache License

public void process(WatchedEvent watchedEvent) {
    if (Event.EventType.NodeDataChanged.equals(watchedEvent.getType())) {
        // node data is changed, this means node is cancelled.
        log.info("Experiment is cancelled with this path:" + watchedEvent.getPath());
        this.cancelled = true;
    }/* www .  java  2 s .c  om*/
}

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From source file:org.apache.airavata.gfac.impl.GfacInternalStatusUpdator.java

License:Apache License

public void process(WatchedEvent watchedEvent) {
    logger.info(watchedEvent.getPath());
    synchronized (mutex) {
        Event.KeeperState state = watchedEvent.getState();
        if (state == Event.KeeperState.SyncConnected) {
            mutex.notify();//from  w  ww. jav  a2 s.  c om
        }
    }
}

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From source file:org.apache.airavata.gfac.impl.watcher.CancelRequestWatcherImpl.java

License:Apache License

@Override
public void process(WatchedEvent watchedEvent) throws Exception {
    // this watcher change data in cancel listener node in the experiment node
    String path = watchedEvent.getPath();
    Watcher.Event.EventType type = watchedEvent.getType();
    CuratorFramework curatorClient = Factory.getCuratorClient();
    log.info("cancel watcher triggered process id {}.", processId);
    switch (type) {
    case NodeDataChanged:
        byte[] bytes = curatorClient.getData().forPath(path);
        String action = new String(bytes);
        if (action.equalsIgnoreCase(ZkConstants.ZOOKEEPER_CANCEL_REQEUST)) {
            cancelProcess(0);/*from   w  w w . j a v  a  2s .co  m*/
        } else {
            curatorClient.getData().usingWatcher(this).forPath(path);
        }
        break;
    case NodeDeleted:
        //end of experiment execution, ignore this event
        log.info("expId: {}, cancel watcher trigger for process {} with event type {}", experimentId, processId,
                type.name());
        break;
    case NodeCreated:
    case NodeChildrenChanged:
    case None:
        log.info("expId: {}, Cancel watcher trigger for process {} with event type {}", experimentId, processId,
                type.name());
        if (path != null) {
            curatorClient.getData().usingWatcher(this).forPath(path);
        }
        break;
    default:
        log.info("expId: {}, Cancel watcher trigger for process {} with event type {}", experimentId, processId,
                type.name());
        if (path != null) {
            curatorClient.getData().usingWatcher(this).forPath(path);
        }
        break;
    }
}

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From source file:org.apache.airavata.gfac.impl.watcher.RedeliveryRequestWatcherImpl.java

License:Apache License

@Override
public void process(WatchedEvent watchedEvent) throws Exception {
    String path = watchedEvent.getPath();
    Watcher.Event.EventType eventType = watchedEvent.getType();
    log.info("Redelivery request came for zk path {} event type {} ", path, eventType.name());
    CuratorFramework curatorClient = Factory.getCuratorClient();
    switch (eventType) {
    case NodeDataChanged:
        byte[] bytes = curatorClient.getData().forPath(path);
        String serverName = new String(bytes);
        if (ServerSettings.getGFacServerName().trim().equals(serverName)) {
            curatorClient.getData().usingWatcher(this).forPath(path);
            log.info("processId: {},event type {}, change data with same server name : {}", processId,
                    eventType, serverName);
        } else {/*from   w  w  w  . java 2  s  .co m*/
            ProcessContext processContext = Factory.getGfacContext().getProcess(processId);
            if (processContext != null) {
                processContext.setHandOver(true);
                log.info("processId : {}, event type {}, handing over to new server instance : {}", processId,
                        eventType, serverName);
            } else {
                log.info("Redelivery request came for processId {}, with event type {}, but couldn't find "
                        + "process context", processId, eventType.name());
            }
        }
        break;
    case NodeDeleted:
        //end of experiment execution, ignore this event
        log.info("Redelivery watcher trigger for process {} with event type {}", processId, eventType.name());
        break;
    case NodeCreated:
    case NodeChildrenChanged:
    case None:
        if (path != null) {
            curatorClient.getData().usingWatcher(this).forPath(path);
            log.info("Redelivery watcher trigger for process {} with event type {}", processId,
                    eventType.name());
        }
        break;
    // not yet implemented
    default:
        if (path != null) {
            curatorClient.getData().usingWatcher(this).forPath(path);
            log.info("Redelivery watcher trigger for process {} with event type {}", processId,
                    eventType.name());
        }
        break;
    }
}

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From source file:org.apache.airavata.gfac.monitor.handlers.GridPullMonitorHandler.java

License:Apache License

public void process(WatchedEvent watchedEvent) {
    if (Event.EventType.NodeDataChanged.equals(watchedEvent.getType())) {
        // node data is changed, this means node is cancelled.
        logger.info("Experiment is cancelled with this path:" + watchedEvent.getPath());

        String[] split = watchedEvent.getPath().split("/");
        for (String element : split) {
            if (element.contains("+")) {
                logger.info("Adding experimentID+TaskID to be removed from monitoring:" + element);
                hpcPullMonitor.getCancelJobList().add(element);
            }//w  ww . jav a  2  s. c o  m
        }
    }
}

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