Example usage for org.apache.zookeeper KeeperException code

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Usage

From source file:com.navercorp.pinpoint.collector.cluster.zookeeper.ZookeeperClient.java

License:Apache License

public List<String> getChildrenNode(String path, boolean watch)
        throws PinpointZookeeperException, InterruptedException {
    checkState();//  w  w  w  .  j  a  va  2 s.  co m

    try {
        List<String> childNodeList = zookeeper.getChildren(path, watch, null);

        logger.info("ChildNode List = {}", childNodeList);
        return childNodeList;
    } catch (KeeperException exception) {
        if (exception.code() != Code.NONODE) {
            handleException(exception);
        }
    }

    return Collections.emptyList();
}

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From source file:com.navercorp.pinpoint.common.server.cluster.zookeeper.ZookeeperExceptionResolver.java

License:Apache License

static PinpointZookeeperException resolve(Exception exception) {
    if (exception instanceof KeeperException) {
        KeeperException keeperException = (KeeperException) exception;
        switch (keeperException.code()) {
        case CONNECTIONLOSS:
        case SESSIONEXPIRED:
            return new ConnectionException(keeperException.getMessage(), keeperException);
        case AUTHFAILED:
        case INVALIDACL:
        case NOAUTH:
            return new AuthException(keeperException.getMessage(), keeperException);
        case BADARGUMENTS:
        case BADVERSION:
        case NOCHILDRENFOREPHEMERALS:
        case NOTEMPTY:
        case NODEEXISTS:
            return new BadOperationException(keeperException.getMessage(), keeperException);
        case NONODE:
            return new NoNodeException(keeperException.getMessage(), keeperException);
        case OPERATIONTIMEOUT:
            return new TimeoutException(keeperException.getMessage(), keeperException);
        default://from   ww  w  .java 2 s .c o m
            return new UnknownException(keeperException.getMessage(), keeperException);
        }
    } else {
        return new UnknownException(exception.getMessage(), exception);
    }
}

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From source file:com.navercorp.pinpoint.web.cluster.ClusterTest.java

License:Apache License

@Test
public void clusterTest2() throws Exception {
    ZooKeeper zookeeper = new ZooKeeper(zookeeperAddress, 5000, null);
    awaitZookeeperConnected(zookeeper);/*w w  w.j  a  v  a  2 s  .  c  om*/

    ts.stop();

    awaitZookeeperDisconnected(zookeeper);
    try {
        zookeeper.getData(CLUSTER_NODE_PATH, null, null);
        Assert.fail();
    } catch (KeeperException e) {
        Assert.assertEquals(KeeperException.Code.CONNECTIONLOSS, e.code());
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    ts.restart();
    getNodeAndCompareContents(zookeeper);

    if (zookeeper != null) {
        zookeeper.close();
    }
}

---

From source file:com.nearinfinity.blur.utils.BlurUtil.java

License:Apache License

public static void createIfMissing(ZooKeeper zookeeper, String path)
        throws KeeperException, InterruptedException {
    if (zookeeper.exists(path, false) == null) {
        try {/*from  w w w.  j  ava  2  s.  c o m*/
            zookeeper.create(path, null, Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
        } catch (KeeperException e) {
            if (e.code() == Code.NODEEXISTS) {
                return;
            }
            throw e;
        }
    }
}

---

From source file:com.nearinfinity.blur.zookeeper.ZkUtils.java

License:Apache License

public static void deleteAnyVersion(ZooKeeper zk, String path) {
    try {//from w w  w .j  a v  a2s .  c  om
        List<String> children = zk.getChildren(path, false);
        for (String c : children) {
            deleteAnyVersion(zk, path + "/" + c);
        }
        zk.delete(path, ANY_VERSION);
    } catch (KeeperException e) {
        if (e.code() == KeeperException.Code.NONODE) {
            return;
        }
        throw new RuntimeException(e);
    } catch (InterruptedException e) {
        throw new RuntimeException(e);
    }
}

---

From source file:com.nearinfinity.mele.util.ZkUtils.java

License:Apache License

public static void deleteAnyVersion(ZooKeeper zk, String path) {
    try {//  w w  w . j  a  va 2 s. c o  m
        List<String> children = zk.getChildren(path, false);
        for (String c : children) {
            deleteAnyVersion(zk, path + "/" + c);
        }
        zk.delete(path, -1);
    } catch (KeeperException e) {
        if (e.code() == KeeperException.Code.NONODE) {
            return;
        }
        throw new RuntimeException(e);
    } catch (InterruptedException e) {
        throw new RuntimeException(e);
    }
}

---

From source file:com.nesscomputing.service.discovery.client.internal.ServiceDiscoveryAnnouncer.java

License:Apache License

@Override
void visit(final List<String> childNodes, final ZooKeeper zookeeper, final long currentGeneration)
        throws InterruptedException, KeeperException {
    // Loop through everything that we *should* announce, add them with the current generation to the
    // generation map.
    for (final ServiceInformation si : localAnnouncements) {
        // This announcement is safe, so increment its generation.
        localAnnouncementGenerations.put(si.getAnnouncementName(), currentGeneration);

        // If announcement is not present, announce it.
        if (!childNodes.contains(si.getAnnouncementName())) {
            LOG.debug("Need to announce %s", si.getAnnouncementName());
            final String childPath = getNodePath(si.getAnnouncementName());

            try {
                final byte[] serialized = objectMapper.writeValueAsBytes(si);
                zookeeper.create(childPath, serialized, Ids.OPEN_ACL_UNSAFE,
                        si.isStaticAnnouncement() ? CreateMode.PERSISTENT : CreateMode.EPHEMERAL);
                LOG.debug("Created %sannouncement for %s", si.isStaticAnnouncement() ? "static " : "",
                        si.getAnnouncementName());
            } catch (final IOException ioe) {
                LOG.warn(ioe, "While generating announcement:");
            }//from  w w w  . j  a  v a  2 s . co  m
        }
    }

    // Now loop through everything that is currently present in the generation map. Remove everything that
    // is not marked with the current generation.
    for (final Iterator<Map.Entry<String, Long>> it = localAnnouncementGenerations.entrySet().iterator(); it
            .hasNext();) {
        final Map.Entry<String, Long> entry = it.next();

        if (entry.getValue() == currentGeneration) {
            LOG.trace("Announcement %s survives in generation %d", entry.getKey(), entry.getValue());
            continue;
        } else {
            LOG.trace("Announcement %s no longer present in generation %d", entry.getKey(), entry.getValue());
            final String childPath = getNodePath(entry.getKey());

            try {
                zookeeper.delete(childPath, -1);
                LOG.debug("Removed announcement for %s", entry.getKey());
                it.remove();
            } catch (final KeeperException ke) {
                // The node disappeared under us. That should not happen, but
                // test for it anyway.
                if (ke.code() == Code.NONODE) {
                    LOG.trace("Node was already removed, ignoring");
                    it.remove();
                } else {
                    throw ke;
                }
            }
        }
    }

    // Now remove static announcements which have been unannounced
    for (final ServiceInformation si : staticAnnouncementsToRemove) {
        final String announcementName = si.getAnnouncementName();

        LOG.info("Removing static announcement %s", announcementName);
        final String childPath = getNodePath(announcementName);

        try {
            zookeeper.delete(childPath, -1);
            LOG.debug("Removed announcement for %s", announcementName);
            staticAnnouncementsToRemove.remove(si);
        } catch (final KeeperException ke) {
            // The node disappeared under us. That should not happen, but
            // test for it anyway.
            if (ke.code() == Code.NONODE) {
                LOG.trace("Node was already removed, ignoring");
                staticAnnouncementsToRemove.remove(si);
            } else {
                throw ke;
            }
        }
    }
}

---

From source file:com.nesscomputing.service.discovery.job.ZookeeperProcessingTask.java

License:Apache License

private void processKeeperException(final KeeperException ke) throws InterruptedException {
    switch (ke.code()) {
    case CONNECTIONLOSS:
        LOG.trace("Connection lost, waiting for reconnect");
        connected = false;/*from ww w.  j a v  a 2 s.c om*/
        break;

    case SESSIONEXPIRED:
        LOG.trace("Session expired, closing zookeeper.");
        connected = false;
        closeZookeeper();
        break;

    default:
        LOG.warn("Zookeeper Problem: %s", ke.code());
        break;
    }
}

---

From source file:com.nesscomputing.service.discovery.server.job.BuildPathJob.java

License:Apache License

@Override
protected boolean execute(final ZooKeeper zookeeper) throws KeeperException, IOException {
    if (elements.length > 0) {
        final StringBuilder sb = new StringBuilder("");

        for (String element : elements) {
            if (StringUtils.isBlank(element)) {
                continue;
            }/* ww  w.j av  a 2 s  .c o m*/

            sb.append('/').append(element);

            final String zPath = sb.toString();
            try {
                if (zookeeper.exists(zPath, false) == null) {
                    LOG.info("Node %s does not exist, creating", zPath);
                    zookeeper.create(zPath, new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
                }
            } catch (InterruptedException ie) {
                Thread.currentThread().interrupt();
                return true;
            } catch (KeeperException ke) {
                if (ke.code() == Code.NODEEXISTS) {
                    LOG.trace("Node exists, ignoring");
                } else {
                    throw ke;
                }
            }
        }
    }
    return true;
}

---

From source file:com.netflix.curator.framework.imps.CuratorFrameworkImpl.java

License:Apache License

@SuppressWarnings({ "ThrowableResultOfMethodCallIgnored" })
<DATA_TYPE> void processBackgroundOperation(OperationAndData<DATA_TYPE> operationAndData, CuratorEvent event) {
    boolean isInitialExecution = (event == null);
    if (isInitialExecution) {
        performBackgroundOperation(operationAndData);
        return;/*w ww  .  java2 s.c om*/
    }

    boolean queueOperation = false;
    do {
        if (RetryLoop.shouldRetry(event.getResultCode())) {
            if (client.getRetryPolicy().allowRetry(operationAndData.getThenIncrementRetryCount(),
                    operationAndData.getElapsedTimeMs(), operationAndData)) {
                queueOperation = true;
            } else {
                if (operationAndData.getErrorCallback() != null) {
                    operationAndData.getErrorCallback().retriesExhausted(operationAndData);
                }

                KeeperException.Code code = KeeperException.Code.get(event.getResultCode());
                Exception e = null;
                try {
                    e = (code != null) ? KeeperException.create(code) : null;
                } catch (Throwable ignore) {
                }
                if (e == null) {
                    e = new Exception("Unknown result code: " + event.getResultCode());
                }
                logError("Background operation retry gave up", e);
            }
            break;
        }

        if (operationAndData.getCallback() != null) {
            sendToBackgroundCallback(operationAndData, event);
            break;
        }

        processEvent(event);
    } while (false);

    if (queueOperation) {
        backgroundOperations.offer(operationAndData);
    }
}

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