com.hazelcast.internal.networking.nio

Interface SelectionHandler

All Known Implementing Classes:

AbstractHandler, NioChannelReader, NioChannelWriter

public interface SelectionHandler

The SelectionHandler is a callback interface that gets called by an IO-thread when there data available to read, or space available to write.

Method Summary

Modifier and Type	Method and Description
void	handle() Called when there are bytes available for reading, or space available to write.
void	onFailure(Throwable throwable) Is called when the handle() throws an exception.

Method Detail

handle

void handle()
     throws Exception

Called when there are bytes available for reading, or space available to write. Any exception that leads to a termination of the connection like an IOException should not be handled in the handle method but should be propagated. The reason behind this is that the handle logic already is complicated enough and by pulling it out the flow will be easier to understand.

Throws:

Exception

onFailure

void onFailure(Throwable throwable)

Is called when the handle() throws an exception. The idiom to use a handler is: try{ handler.handle(); } catch(Throwable t) { handler.onFailure(t); }

Parameters:

throwable -