org.apache.camel.processor.interceptor
Class DefaultTraceEventHandler

java.lang.Object
  org.apache.camel.processor.interceptor.DefaultTraceEventHandler

All Implemented Interfaces:

TraceEventHandler, Service

public class DefaultTraceEventHandler
extends Object
implements TraceEventHandler, Service

Constructor Summary

DefaultTraceEventHandler(Tracer tracer)

Method Summary

void	start() Starts the service
void	stop() Stops the service
void	traceExchange(ProcessorDefinition<?> node, Processor target, TraceInterceptor traceInterceptor, Exchange exchange) Event called when an Exchange is about to be processed This event is only called if trace out has been disabled (which it is by default).
Object	traceExchangeIn(ProcessorDefinition<?> node, Processor target, TraceInterceptor traceInterceptor, Exchange exchange) Event called when an Exchange is about to be processed (in) This event is only called if trace out has been enabled.
void	traceExchangeOut(ProcessorDefinition<?> node, Processor target, TraceInterceptor traceInterceptor, Exchange exchange, Object traceState) Event called when an Exchange has been processed (out) This event is only called if trace out has been enabled.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultTraceEventHandler

public DefaultTraceEventHandler(Tracer tracer)

Method Detail

traceExchange

public void traceExchange(ProcessorDefinition<?> node,
                          Processor target,
                          TraceInterceptor traceInterceptor,
                          Exchange exchange)
                   throws Exception

Description copied from interface: TraceEventHandler

Event called when an Exchange is about to be processed

This event is only called if trace out has been disabled (which it is by default).

This method is for coarse grained tracing, where as the the other two methods is for fine grained with in and event events.

Specified by:

traceExchange in interface TraceEventHandler

Parameters:

node - the current node

target - the current processor being invoked

traceInterceptor - the trace interceptor

exchange - the current exchange

Throws:

Exception - is thrown if an error occurred during tracing

traceExchangeIn

public Object traceExchangeIn(ProcessorDefinition<?> node,
                              Processor target,
                              TraceInterceptor traceInterceptor,
                              Exchange exchange)
                       throws Exception

Description copied from interface: TraceEventHandler

Event called when an Exchange is about to be processed (in)

This event is only called if trace out has been enabled.

Specified by:

traceExchangeIn in interface TraceEventHandler

Parameters:

node - the current node

target - the current processor being invoked

traceInterceptor - the trace interceptor

exchange - the current exchange

Returns:

an optional return object to pass in the traceEventOut method.

Throws:

Exception - is thrown if an error occurred during tracing

traceExchangeOut

public void traceExchangeOut(ProcessorDefinition<?> node,
                             Processor target,
                             TraceInterceptor traceInterceptor,
                             Exchange exchange,
                             Object traceState)
                      throws Exception

Description copied from interface: TraceEventHandler

Event called when an Exchange has been processed (out)

This event is only called if trace out has been enabled.

Specified by:

traceExchangeOut in interface TraceEventHandler

Parameters:

node - the current node

target - the current processor being invoked

traceInterceptor - the trace interceptor

exchange - the current exchange (contains exception if the processing failed with an exception)

traceState - the optional object which was returned from the traceEventIn method.

Throws:

Exception - is thrown if an error occurred during tracing

start

public void start()
           throws Exception

Description copied from interface: Service

Starts the service

Specified by:

start in interface Service

Throws:

Exception - is thrown if starting failed

stop

public void stop()
          throws Exception

Description copied from interface: Service

Stops the service

Specified by:

stop in interface Service

Throws:

Exception - is thrown if stopping failed