io.opencensus.contrib.http.servlet

Class WriteListenerWrapper

java.lang.Object

io.opencensus.contrib.http.servlet.WriteListenerWrapper

All Implemented Interfaces:

EventListener, javax.servlet.WriteListener

@ExperimentalApi
public class WriteListenerWrapper
extends Object
implements javax.servlet.WriteListener

This class is a wrapper class for WriteListener. It facilitates executing asynchronous onWritePossible method in the original context at the time of creating the listener.

Since:

0.25.0

Constructor Summary

Constructors

Constructor and Description
WriteListenerWrapper(javax.servlet.WriteListener writeListener) Creates an instance of WriteListenerWrapper.

Method Summary

Modifier and Type	Method and Description
void	onError(Throwable t)
void	onWritePossible() It executes onWritePossible() method of the object being wrapped in the saved context.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WriteListenerWrapper

public WriteListenerWrapper(javax.servlet.WriteListener writeListener)

Creates an instance of WriteListenerWrapper. It saves current Context at the time of creation.

Parameters:

writeListener - WriteListener object being wrapped.

Since:

0.25.0

Method Detail

onWritePossible

public void onWritePossible()
                     throws IOException

It executes onWritePossible() method of the object being wrapped in the saved context. It saves current context before executing the method and restores it after it is finished executing.

Specified by:

onWritePossible in interface javax.servlet.WriteListener

Throws:

IOException

Since:

0.25.0

onError

public void onError(Throwable t)

Specified by:

onError in interface javax.servlet.WriteListener