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本文整理了Java中org.apache.twill.zookeeper.ZKClient.create()
方法的一些代码示例,展示了ZKClient.create()
的具体用法。这些代码示例主要来源于Github
/Stackoverflow
/Maven
等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。ZKClient.create()
方法的具体详情如下:
包路径:org.apache.twill.zookeeper.ZKClient
类名称:ZKClient
方法名:create
[英]Creates a path in zookeeper. Same as calling #create(String,byte[],org.apache.zookeeper.CreateMode,boolean).
[中]在zookeeper中创建路径。与调用#create(字符串,字节[],org.apache.zookeeper.CreateMode,布尔值)相同。
代码示例来源:origin: apache/twill
@Override
public OperationFuture<String> create(String path, @Nullable byte[] data,
CreateMode createMode, boolean createParent, Iterable<ACL> acl) {
return delegate.create(path, data, createMode, createParent, acl);
}
代码示例来源:origin: org.apache.twill/twill-zookeeper
@Override
public OperationFuture<String> create(String path, @Nullable byte[] data,
CreateMode createMode, boolean createParent, Iterable<ACL> acl) {
return delegate.create(path, data, createMode, createParent, acl);
}
代码示例来源:origin: org.apache.twill/twill-zookeeper
public OperationFuture<String> create(String path, @Nullable byte[] data,
CreateMode createMode, boolean createParent, Iterable<ACL> acl) {
return client.create(path, data, createMode, createParent, acl);
}
代码示例来源:origin: apache/twill
public OperationFuture<String> create(String path, @Nullable byte[] data,
CreateMode createMode, boolean createParent, Iterable<ACL> acl) {
return client.create(path, data, createMode, createParent, acl);
}
代码示例来源:origin: org.apache.twill/twill-zookeeper
/**
* Private helper method to create a ZK node based on the parameter. The result of the creation is always
* communicate via the provided {@link FutureCallback}.
*/
private static void createNode(ZKClient zkClient, String path, @Nullable byte[] data,
CreateMode createMode, boolean createParent,
Iterable<ACL> acls, FutureCallback<String> callback) {
Futures.addCallback(zkClient.create(path, data, createMode, createParent, acls),
callback, Threads.SAME_THREAD_EXECUTOR);
}
代码示例来源:origin: apache/twill
/**
* Private helper method to create a ZK node based on the parameter. The result of the creation is always
* communicate via the provided {@link FutureCallback}.
*/
private static void createNode(ZKClient zkClient, String path, @Nullable byte[] data,
CreateMode createMode, boolean createParent,
Iterable<ACL> acls, FutureCallback<String> callback) {
Futures.addCallback(zkClient.create(path, data, createMode, createParent, acls),
callback, Threads.SAME_THREAD_EXECUTOR);
}
代码示例来源:origin: caskdata/coopr
/**
* Acts as {@link ZKClient#create(String, byte[], org.apache.zookeeper.CreateMode, boolean)
* create(path, null, CreateMode.PERSISTENT, true)} if node doesn't exist. Otherwise has no affect.
* In latter case sets {@code null} in returned future.
*/
public static ListenableFuture<String> ensureExists(final ZKClient zkClient,
final String path) {
final SettableFuture<String> resultFuture = SettableFuture.create();
OperationFuture<String> createFuture = zkClient.create(path, null, CreateMode.PERSISTENT, true);
Futures.addCallback(createFuture, new FutureCallback<String>() {
@Override
public void onSuccess(String result) {
resultFuture.set(result);
}
@Override
public void onFailure(Throwable t) {
if (causedBy(t, KeeperException.NodeExistsException.class)) {
resultFuture.set(path);
} else {
resultFuture.setException(t);
}
}
});
return resultFuture;
}
代码示例来源:origin: org.apache.twill/twill-zookeeper
private void register() {
state = State.IN_PROGRESS;
zkNodePath = null;
// Register for election
final String path = String.format("%s/%s-", zkFolderPath, guid);
LOG.debug("Registering for election {} with path {}", zkFolderPath, path);
OperationFuture<String> createFuture = zkClient.create(path, getNodeData(), CreateMode.EPHEMERAL_SEQUENTIAL, true);
Futures.addCallback(createFuture, new FutureCallback<String>() {
@Override
public void onSuccess(String result) {
LOG.debug("Created zk node {}", result);
zkNodePath = result;
if (state == State.CANCELLED) {
// If cancel was called after create(), but before callback trigger, delete the node created.
deleteNode();
} else {
runElection();
}
}
@Override
public void onFailure(Throwable t) {
LOG.error("Got exception during node creation for folder {}", path, t);
// The node may created successfully on server and then server crash,
// which client might receive failure instead.
// Not checking for cancel here, as we don't know the zkNodePath.
// Needs to rely on runElection to handle cancel.
runElection();
}
}, executor);
}
代码示例来源:origin: caskdata/coopr
public T put(String key, T value) {
Map<String, T> current = Maps.newHashMap(currentView.get());
T result = current.put(key, value);
currentView.set(ImmutableMap.<String, T>builder().putAll(current).build());
// Note: we do delete and add new node with new data VS createOrSet() to avoid attaching watchers to every node
String itemNodePath = getItemNodePath(key);
Futures.getUnchecked(ZKClientExt.delete(zkClient, itemNodePath, true));
Futures.getUnchecked(zkClient.create(itemNodePath, serializer.serialize(value), CreateMode.PERSISTENT));
return result;
}
代码示例来源:origin: apache/twill
private OperationFuture<String> doRegister(Discoverable discoverable) {
byte[] discoverableBytes = DiscoverableAdapter.encode(discoverable);
return zkClient.create(getNodePath(discoverable), discoverableBytes, CreateMode.EPHEMERAL, true);
}
代码示例来源:origin: org.apache.twill/twill-discovery-core
private OperationFuture<String> doRegister(Discoverable discoverable) {
byte[] discoverableBytes = DiscoverableAdapter.encode(discoverable);
return zkClient.create(getNodePath(discoverable), discoverableBytes, CreateMode.EPHEMERAL, true);
}
代码示例来源:origin: org.apache.twill/twill-zookeeper
@Override
public OperationFuture<String> create(String path, @Nullable byte[] data,
CreateMode createMode, boolean createParent, Iterable<ACL> acl) {
return relayPath(delegate.create(getNamespacedPath(path), data, createMode, createParent, acl),
this.<String>createFuture(path));
}
代码示例来源:origin: caskdata/coopr
private T putInternal(String key, T value) {
Map<String, T> current = Maps.newHashMap(currentView);
T result = current.put(key, value);
currentView = ImmutableMap.<String, T>builder().putAll(current).build();
String itemNodePath = getItemNodePath(key);
// Note: we do delete and add new node with new data VS createOrSet() so that cversion of children change (we depend
// on it when checking if the current in-memory view is stale)
Futures.getUnchecked(ZKClientExt.delete(zkClient, itemNodePath, true));
Futures.getUnchecked(zkClient.create(itemNodePath, serializer.serialize(value), CreateMode.PERSISTENT, true));
return result;
}
代码示例来源:origin: apache/twill
@Override
public OperationFuture<String> create(String path, @Nullable byte[] data,
CreateMode createMode, boolean createParent, Iterable<ACL> acl) {
return relayPath(delegate.create(getNamespacedPath(path), data, createMode, createParent, acl),
this.<String>createFuture(path));
}
代码示例来源:origin: org.apache.twill/twill-yarn
@Override
protected void startUp() throws Exception {
LOG.info("Creating container ZK path: {}{}", zkClient.getConnectString(), path);
ZKOperations.ignoreError(zkClient.create(path, null, CreateMode.PERSISTENT),
KeeperException.NodeExistsException.class, null).get(TIMEOUT_SECONDS, TimeUnit.SECONDS);
}
代码示例来源:origin: apache/twill
@Override
protected void startUp() throws Exception {
LOG.info("Creating container ZK path: {}{}", zkClient.getConnectString(), path);
ZKOperations.ignoreError(zkClient.create(path, null, CreateMode.PERSISTENT),
KeeperException.NodeExistsException.class, null).get(TIMEOUT_SECONDS, TimeUnit.SECONDS);
}
代码示例来源:origin: cdapio/cdap
public void init() throws InterruptedException {
this.watcher = new ZKWatcher();
try {
LOG.info("Initializing SharedResourceCache. Checking for parent znode {}", parentZnode);
if (zookeeper.exists(parentZnode).get() == null) {
// may be created in parallel by another instance
// Also the child nodes are secure even without adding any ACLs to parent node.
ZKOperations.ignoreError(zookeeper.create(parentZnode, null, CreateMode.PERSISTENT),
KeeperException.NodeExistsException.class, null).get();
}
} catch (ExecutionException ee) {
// recheck if already created
throw Throwables.propagate(ee.getCause());
}
this.resources = reloadAll();
listeners.notifyUpdate();
}
代码示例来源:origin: caskdata/coopr
private void initializeCounter(Type type) {
Stat stat = Futures.getUnchecked(zkClient.exists(type.path));
if (stat == null) {
Futures.getUnchecked(zkClient.create(type.path, Longs.toByteArray(startId), CreateMode.PERSISTENT, true));
}
}
}
代码示例来源:origin: apache/twill
@Override
protected void doStart() throws Exception {
LOG.info("Start application master with spec: {}",
TwillRuntimeSpecificationAdapter.create().toJson(twillRuntimeSpec));
// initialize the event handler, if it fails, it will fail the application.
eventHandler.initialize(new BasicEventHandlerContext(twillRuntimeSpec));
// call event handler started.
eventHandler.started();
instanceChangeExecutor = Executors.newSingleThreadExecutor(Threads.createDaemonThreadFactory("instanceChanger"));
// Creates ZK path for runnable. It's ok if the path already exists.
// That's for the case when the AM get killed and restarted
ZKOperations.ignoreError(
zkClient.create("/" + runId.getId() + "/runnables", null, CreateMode.PERSISTENT),
KeeperException.NodeExistsException.class, null)
.get();
runningContainers.addWatcher(Constants.DISCOVERY_PATH_PREFIX);
runnableContainerRequests = initContainerRequests();
}
代码示例来源:origin: org.apache.twill/twill-yarn
@Override
protected void doStart() throws Exception {
LOG.info("Start application master with spec: {}",
TwillRuntimeSpecificationAdapter.create().toJson(twillRuntimeSpec));
// initialize the event handler, if it fails, it will fail the application.
eventHandler.initialize(new BasicEventHandlerContext(twillRuntimeSpec));
// call event handler started.
eventHandler.started();
instanceChangeExecutor = Executors.newSingleThreadExecutor(Threads.createDaemonThreadFactory("instanceChanger"));
// Creates ZK path for runnable. It's ok if the path already exists.
// That's for the case when the AM get killed and restarted
ZKOperations.ignoreError(
zkClient.create("/" + runId.getId() + "/runnables", null, CreateMode.PERSISTENT),
KeeperException.NodeExistsException.class, null)
.get();
runningContainers.addWatcher(Constants.DISCOVERY_PATH_PREFIX);
runnableContainerRequests = initContainerRequests();
}
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