Java Code Examples for org.apache.curator.framework.api.CuratorEventType#CHILDREN

The following examples show how to use org.apache.curator.framework.api.CuratorEventType#CHILDREN . 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

@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

@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

@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: FindAndDeleteProtectedNodeInBackground.java From curator with Apache License 2.0

4 votes

@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);
}