Java Code Examples for org.apache.zookeeper.AsyncCallback#Children2Callback

The following examples show how to use org.apache.zookeeper.AsyncCallback#Children2Callback . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: GetChildrenBuilderImpl.java    From xian with Apache License 2.0 5 votes vote down vote up 
@Override
public void performBackgroundOperation(final OperationAndData<String> operationAndData) throws Exception
{
    try
    {
        final OperationTrace       trace = client.getZookeeperClient().startAdvancedTracer("GetChildrenBuilderImpl-Background");
        AsyncCallback.Children2Callback callback = new AsyncCallback.Children2Callback()
        {
            @Override
            public void processResult(int rc, String path, Object o, List<String> strings, Stat stat)
            {
                trace.setReturnCode(rc).setPath(path).setWithWatcher(watching.getWatcher() != null).setStat(stat).commit();
                if ( strings == null )
                {
                    strings = Lists.newArrayList();
                }
                CuratorEventImpl event = new CuratorEventImpl(client, CuratorEventType.CHILDREN, rc, path, null, o, stat, null, strings, null, null);
                client.processBackgroundOperation(operationAndData, event);
            }
        };
        if ( watching.isWatched() )
        {
            client.getZooKeeper().getChildren(operationAndData.getData(), true, callback, backgrounding.getContext());
        }
        else
        {
            client.getZooKeeper().getChildren(operationAndData.getData(), watching.getWatcher(), callback, backgrounding.getContext());
        }
    }
    catch ( Throwable e )
    {
        backgrounding.checkError(e);
    }
}
Example 2
Source File: GetChildrenBuilderImpl.java    From curator with Apache License 2.0 5 votes vote down vote up 
@Override
public void performBackgroundOperation(final OperationAndData<String> operationAndData) throws Exception
{
    try
    {
        final OperationTrace       trace = client.getZookeeperClient().startAdvancedTracer("GetChildrenBuilderImpl-Background");
        AsyncCallback.Children2Callback callback = new AsyncCallback.Children2Callback()
        {
            @Override
            public void processResult(int rc, String path, Object o, List<String> strings, Stat stat)
            {
                watching.commitWatcher(rc, false);
                trace.setReturnCode(rc).setPath(path).setWithWatcher(watching.hasWatcher()).setStat(stat).commit();
                if ( strings == null )
                {
                    strings = Lists.newArrayList();
                }
                CuratorEventImpl event = new CuratorEventImpl(client, CuratorEventType.CHILDREN, rc, path, null, o, stat, null, strings, null, null, null);
                client.processBackgroundOperation(operationAndData, event);
            }
        };
        if ( watching.isWatched() )
        {
            client.getZooKeeper().getChildren(operationAndData.getData(), true, callback, backgrounding.getContext());
        }
        else
        {
            client.getZooKeeper().getChildren(operationAndData.getData(), watching.getWatcher(operationAndData.getData()), callback, backgrounding.getContext());
        }
    }
    catch ( Throwable e )
    {
        backgrounding.checkError(e, watching);
    }
}
Example 3
Source File: FindAndDeleteProtectedNodeInBackground.java    From xian with Apache License 2.0 4 votes vote down vote up 
@Override
public void performBackgroundOperation(final OperationAndData<Void> operationAndData) throws Exception
{
    final OperationTrace trace = client.getZookeeperClient().startAdvancedTracer("FindAndDeleteProtectedNodeInBackground");
    AsyncCallback.Children2Callback callback = new AsyncCallback.Children2Callback()
    {
        @Override
        public void processResult(int rc, String path, Object o, List<String> strings, Stat stat)
        {
            trace.setReturnCode(rc).setPath(path).setStat(stat).commit();

            if ( debugInsertError.compareAndSet(true, false) )
            {
                rc = KeeperException.Code.CONNECTIONLOSS.intValue();
            }

            if ( rc == KeeperException.Code.OK.intValue() )
            {
                final String node = CreateBuilderImpl.findNode(strings, "/", protectedId);  // due to namespacing, don't let CreateBuilderImpl.findNode adjust the path
                if ( node != null )
                {
                    try
                    {
                        String deletePath = client.unfixForNamespace(ZKPaths.makePath(namespaceAdjustedParentPath, node));
                        client.delete().guaranteed().inBackground().forPath(deletePath);
                    }
                    catch ( Exception e )
                    {
                        ThreadUtils.checkInterrupted(e);
                        log.error("Could not start guaranteed delete for node: " + node);
                        rc = KeeperException.Code.CONNECTIONLOSS.intValue();
                    }
                }
            }

            if ( rc != KeeperException.Code.OK.intValue() )
            {
                CuratorEventImpl event = new CuratorEventImpl(client, CuratorEventType.CHILDREN, rc, path, null, o, stat, null, strings, null, null);
                client.processBackgroundOperation(operationAndData, event);
            }
        }
    };
    client.getZooKeeper().getChildren(namespaceAdjustedParentPath, false, callback, null);
}
Example 4
Source File: ZookeeperClient.java    From ignite with Apache License 2.0 4 votes vote down vote up 
/**
 * @param path Path.
 * @param watcher Watcher.
 * @param cb Callback.
 */
void getChildrenAsync(String path, Watcher watcher, AsyncCallback.Children2Callback cb) {
    GetChildrenOperation op = new GetChildrenOperation(path, watcher, cb);

    zk.getChildren(path, watcher, new ChildrenCallbackWrapper(op), null);
}
Example 5
Source File: ZookeeperClient.java    From ignite with Apache License 2.0 4 votes vote down vote up 
/**
 * @param path Path.
 * @param watcher Watcher.
 * @param cb Callback.
 */
GetChildrenOperation(String path, Watcher watcher, AsyncCallback.Children2Callback cb) {
    this.path = path;
    this.watcher = watcher;
    this.cb = cb;
}
Example 6
Source File: FindAndDeleteProtectedNodeInBackground.java    From curator with Apache License 2.0 4 votes vote down vote up 
@Override
public void performBackgroundOperation(final OperationAndData<Void> operationAndData) throws Exception
{
    final OperationTrace trace = client.getZookeeperClient().startAdvancedTracer("FindAndDeleteProtectedNodeInBackground");
    AsyncCallback.Children2Callback callback = new AsyncCallback.Children2Callback()
    {
        @Override
        public void processResult(int rc, String path, Object o, List<String> strings, Stat stat)
        {
            trace.setReturnCode(rc).setPath(path).setStat(stat).commit();

            if ( debugInsertError.compareAndSet(true, false) )
            {
                rc = KeeperException.Code.CONNECTIONLOSS.intValue();
            }

            if ( rc == KeeperException.Code.OK.intValue() )
            {
                final String node = CreateBuilderImpl.findNode(strings, "/", protectedId);  // due to namespacing, don't let CreateBuilderImpl.findNode adjust the path
                if ( node != null )
                {
                    try
                    {
                        String deletePath = client.unfixForNamespace(ZKPaths.makePath(namespaceAdjustedParentPath, node));
                        client.delete().guaranteed().inBackground().forPath(deletePath);
                    }
                    catch ( Exception e )
                    {
                        ThreadUtils.checkInterrupted(e);
                        log.error("Could not start guaranteed delete for node: " + node);
                        rc = KeeperException.Code.CONNECTIONLOSS.intValue();
                    }
                }
            }

            if ( rc != KeeperException.Code.OK.intValue() )
            {
                CuratorEventImpl event = new CuratorEventImpl(client, CuratorEventType.CHILDREN, rc, path, null, o, stat, null, strings, null, null, null);
                client.processBackgroundOperation(operationAndData, event);
            }
        }
    };
    client.getZooKeeper().getChildren(namespaceAdjustedParentPath, false, callback, null);
}
Example 7
Source File: ZooKeeperConnection.java    From util with Apache License 2.0 4 votes vote down vote up 
public void getChildren(final String path, final Watcher watcher, final AsyncCallback.Children2Callback cb, final Object ctx) {
    zooKeeper.getChildren(path, watcher, cb, ctx);
}
Example 8
Source File: ZooKeeperConnection.java    From util with Apache License 2.0 4 votes vote down vote up 
public void getChildren(final String path, final boolean watch, final AsyncCallback.Children2Callback cb, final Object ctx) {
    zooKeeper.getChildren(path, watch, cb, ctx);
}
Example 9
Source File: ZooKeeperImpl.java    From hbase-indexer with Apache License 2.0 4 votes vote down vote up 
@Override
public void getChildren(String path, Watcher watcher, AsyncCallback.Children2Callback cb, Object ctx) {
    delegate.getChildren(path, watcher, cb, ctx);
}
Example 10
Source File: ZooKeeperImpl.java    From hbase-indexer with Apache License 2.0 4 votes vote down vote up 
@Override
public void getChildren(String path, boolean watch, AsyncCallback.Children2Callback cb, Object ctx) {
    delegate.getChildren(path, watch, cb, ctx);
}
Example 11
Source File: ZooKeeperItf.java    From hbase-indexer with Apache License 2.0 votes vote down vote up 
void getChildren(String path, Watcher watcher, AsyncCallback.Children2Callback cb, Object ctx);
Example 12
Source File: ZooKeeperItf.java    From hbase-indexer with Apache License 2.0 votes vote down vote up 
void getChildren(String path, boolean watch, AsyncCallback.Children2Callback cb, Object ctx);