List of usage examples for org.apache.zookeeper KeeperException create
public static KeeperException create(Code code)
From source file:com.linkedin.d2.discovery.stores.zk.ZooKeeperEphemeralStore.java
License:Apache License
@Override public void put(final String prop, final T value, final Callback<None> callback) { _putStats.inc();//from www . j ava 2s. c om trace(_log, "put ", prop, ": ", value); final String path = getPath(prop); _zkConn.ensurePersistentNodeExists(path, new Callback<None>() { @Override public void onSuccess(None none) { final String ephemeralPath = path + "/ephemoral-"; AsyncCallback.StringCallback stringCallback = new AsyncCallback.StringCallback() { @Override public void processResult(int rc, String path, Object ctx, String name) { KeeperException.Code code = KeeperException.Code.get(rc); switch (code) { case OK: callback.onSuccess(None.none()); break; default: callback.onError(KeeperException.create(code)); break; } } }; if (_zk instanceof RetryZooKeeper) { ((RetryZooKeeper) _zk).createUniqueSequential(ephemeralPath, _serializer.toBytes(value), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL_SEQUENTIAL, stringCallback, null); } else { _zk.create(ephemeralPath, _serializer.toBytes(value), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL_SEQUENTIAL, stringCallback, null); } } @Override public void onError(Throwable e) { callback.onError(e); } }); }
From source file:com.linkedin.d2.discovery.stores.zk.ZooKeeperEphemeralStore.java
License:Apache License
public void removePartial(final String prop, final T value, final Callback<None> callback) { final String path = getPath(prop); trace(_log, "remove partial ", prop, ": ", value); final Callback<Map<String, T>> childrenCallback = new Callback<Map<String, T>>() { @Override//w w w .ja va 2 s . co m public void onSuccess(Map<String, T> children) { String delete = _merger.unmerge(prop, value, children); _zkConn.removeNodeUnsafe(path + "/" + delete.toString(), callback); } @Override public void onError(Throwable e) { callback.onError(e); } }; _zk.getChildren(path, false, new AsyncCallback.ChildrenCallback() { @Override public void processResult(int rc, String path, Object ctx, List<String> children) { KeeperException.Code code = KeeperException.Code.get(rc); switch (code) { case OK: if (children.size() > 0) { ChildCollector collector = new ChildCollector(children.size(), childrenCallback); for (String child : children) { _zk.getData(path + "/" + child, false, collector, null); } } else { _log.warn("Ignoring request to removePartial with no children: {}", path); callback.onSuccess(None.none()); } break; default: callback.onError(KeeperException.create(code)); break; } } }, null); }
From source file:com.linkedin.d2.discovery.stores.zk.ZooKeeperEphemeralStore.java
License:Apache License
@Override public void get(final String listenTo, final Callback<T> callback) { String path = getPath(listenTo); // Note ChildrenCallback is compatible with a ZK 3.2 server; Children2Callback is // compatible only with ZK 3.3+ server. AsyncCallback.ChildrenCallback zkCallback = new AsyncCallback.ChildrenCallback() { @Override//from w ww . j a va 2 s .c o m public void processResult(int rc, String path, Object context, List<String> children) { KeeperException.Code result = KeeperException.Code.get(rc); switch (result) { case NONODE: callback.onSuccess(null); break; case OK: getMergedChildren(path, children, null, callback); break; default: callback.onError(KeeperException.create(result)); break; } } }; _zk.getChildren(path, null, zkCallback, null); }
From source file:com.linkedin.parseq.zk.client.TestReaper.java
License:Apache License
@Test public void testReaperRetry() throws InterruptedException { final int MAX_RETRY = 3; final CountDownLatch failure = new CountDownLatch(MAX_RETRY); final CountDownLatch success = new CountDownLatch(1); Reaper.Zombie zombie = new Reaper.Zombie() { private int count = 0; @Override/*from w ww . j av a 2s . c o m*/ public Task<Void> reap() { if (count++ < MAX_RETRY) { return Task.action(() -> failure.countDown()) .andThen(Task.failure(KeeperException.create(KeeperException.Code.CONNECTIONLOSS))); } else { return Task.action(() -> success.countDown()); } } }; _reaper.submit(zombie); Assert.assertTrue(failure.await(10, TimeUnit.SECONDS)); Assert.assertTrue(success.await(10, TimeUnit.SECONDS)); }
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;//from w ww .j a va 2 s . c o m
}
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);
}
}
From source file:com.netflix.curator.framework.imps.CuratorTransactionImpl.java
License:Apache License
private List<OpResult> doOperation(AtomicBoolean firstTime) throws Exception { boolean localFirstTime = firstTime.getAndSet(false); if (!localFirstTime) { }/* w ww. j a v a 2 s. c o m*/ List<OpResult> opResults = client.getZooKeeper().multi(transaction); if (opResults.size() > 0) { OpResult firstResult = opResults.get(0); if (firstResult.getType() == ZooDefs.OpCode.error) { OpResult.ErrorResult error = (OpResult.ErrorResult) firstResult; KeeperException.Code code = KeeperException.Code.get(error.getErr()); if (code == null) { code = KeeperException.Code.UNIMPLEMENTED; } throw KeeperException.create(code); } } return opResults; }
From source file:com.proofpoint.zookeeper.RetryHandler.java
License:Apache License
private boolean shouldRetry(KeeperException.Code code) { if ((code == KeeperException.Code.CONNECTIONLOSS) || (code == KeeperException.Code.OPERATIONTIMEOUT)) { try {/*www . j a va 2 s . c om*/ //noinspection ThrowableResultOfMethodCallIgnored if (policy.shouldRetry(KeeperException.create(code), retries++)) { client.getState().close(); return true; } else { log.info("Connection lost on retries for call %s", proc.getClass().getName()); client.errorConnectionLost(); client.getState().close(); } } catch (Exception e) { log.error(e, "for call %s", proc.getClass().getName()); } } return false; }
From source file:com.splicemachine.ddl.ZooKeeperDDLWatchChecker.java
License:Apache License
@Override public void notifyProcessed(Collection<Pair<DDLMessage.DDLChange, String>> processedChanges) throws IOException { /*//from w ww .java2s. co m * Notify the relevant controllers that their change has been processed */ List<Op> ops = Lists.newArrayListWithExpectedSize(processedChanges.size()); List<DDLMessage.DDLChange> changeList = Lists.newArrayList(); for (Pair<DDLMessage.DDLChange, String> pair : processedChanges) { DDLMessage.DDLChange change = pair.getFirst(); String errorMessage = pair.getSecond(); // Tag Errors for handling on the client, will allow us to understand what node failed and why... String path = zkClient.changePath + "/" + change.getChangeId() + "/" + (errorMessage == null ? "" : DDLConfiguration.ERROR_TAG) + id; Op op = Op.create(path, (errorMessage == null ? new byte[] {} : (String.format("server [%s] failed with error [%s]", id, errorMessage).getBytes())), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL); ops.add(op); changeList.add(change); } try { List<OpResult> multi = ZkUtils.getRecoverableZooKeeper().getZooKeeper().multi(ops); for (int i = 0; i < multi.size(); i++) { OpResult result = multi.get(i); if (!(result instanceof OpResult.ErrorResult)) processedChanges.remove(changeList.get(i)); else { OpResult.ErrorResult err = (OpResult.ErrorResult) result; KeeperException.Code code = KeeperException.Code.get(err.getErr()); switch (code) { case NODEEXISTS: //we may have already set the value, so ignore node exists issues case NONODE: // someone already removed the notification, it's obsolete // ignore break; default: throw Exceptions.getIOException(KeeperException.create(code)); } } } } catch (InterruptedException e) { throw Exceptions.getIOException(e); } catch (KeeperException e) { switch (e.code()) { case NODEEXISTS: //we may have already set the value, so ignore node exists issues case NONODE: // someone already removed the notification, it's obsolete // ignore break; default: throw Exceptions.getIOException(e); } } }
From source file:com.twitter.distributedlog.acl.ZKAccessControl.java
License:Apache License
public Future<ZKAccessControl> create(ZooKeeperClient zkc) { final Promise<ZKAccessControl> promise = new Promise<ZKAccessControl>(); try {/*from w w w . ja va 2 s.co m*/ zkc.get().create(zkPath, serialize(accessControlEntry), zkc.getDefaultACL(), CreateMode.PERSISTENT, new AsyncCallback.StringCallback() { @Override public void processResult(int rc, String path, Object ctx, String name) { if (KeeperException.Code.OK.intValue() == rc) { ZKAccessControl.this.zkVersion = 0; promise.setValue(ZKAccessControl.this); } else { promise.setException(KeeperException.create(KeeperException.Code.get(rc))); } } }, null); } catch (ZooKeeperClient.ZooKeeperConnectionException e) { promise.setException(e); } catch (InterruptedException e) { promise.setException(e); } catch (IOException e) { promise.setException(e); } return promise; }
From source file:com.twitter.distributedlog.acl.ZKAccessControl.java
License:Apache License
public Future<ZKAccessControl> update(ZooKeeperClient zkc) { final Promise<ZKAccessControl> promise = new Promise<ZKAccessControl>(); try {// w w w .ja va 2 s.c o m zkc.get().setData(zkPath, serialize(accessControlEntry), zkVersion, new AsyncCallback.StatCallback() { @Override public void processResult(int rc, String path, Object ctx, Stat stat) { if (KeeperException.Code.OK.intValue() == rc) { ZKAccessControl.this.zkVersion = stat.getVersion(); promise.setValue(ZKAccessControl.this); } else { promise.setException(KeeperException.create(KeeperException.Code.get(rc))); } } }, null); } catch (ZooKeeperClient.ZooKeeperConnectionException e) { promise.setException(e); } catch (InterruptedException e) { promise.setException(e); } catch (IOException e) { promise.setException(e); } return promise; }