com.vordel.circuit

Class FilterPathTracker

java.lang.Object

com.vordel.circuit.MessageListenerAdapter

com.vordel.circuit.FilterPathTracker

All Implemented Interfaces:

MessageCreationListener, MessageListener

public class FilterPathTracker
extends MessageListenerAdapter
implements MessageCreationListener

Constructor Summary

Constructors

Constructor and Description
FilterPathTracker()

Method Summary

Modifier and Type	Method and Description
void	dispose()
CircuitTracker	getCircuitTracker(Message m)
void	messageCreated(Message m, java.lang.Object source) Called once the message is created, but before the source has populated any properties.
void	postCircuitInvocation(Circuit c, Message m, boolean result, java.lang.Object context) Called after a chain of Filters in the Circuit has been invoked.
void	postCircuitProcessing(Message message, int result) Called when all processing in the Circuit-space is completed.
void	postFilterInvocation(Circuit c, MessageProcessor mp, Message m, int resultType, MessageProcessor caller, java.lang.Object context) This method is called when a Filter's MessageProcessor has finished execution.
void	preCircuitInvocation(Circuit c, Message m, java.lang.Object context) Called before the first Filter in a given Circuit is invoked.
void	preCircuitProcessing(Circuit c, Message m, java.lang.Object context) Called when the message originator has completed initializing the Message, and we are about to start processing in the Circuit-space.
void	preFaultHandlerInvocation(Circuit c, MessageProcessor faultHandler, Message m, CircuitAbortException fault) Called before attempting to handle a previous CircuitAbortException with a specific fault-handling MessageProcessor.
void	preFilterInvocation(Circuit c, MessageProcessor mp, Message m, MessageProcessor caller, java.lang.Object context) This method is called immediately before a Filter's MessageProcessor is invoked.
static void	tracePath(CircuitCallRecord cip, int level)

Methods inherited from class com.vordel.circuit.MessageListenerAdapter

abortedCircuitInvocation, onMessageCompletion

Methods inherited from class java.lang.Object

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

Constructor Detail

FilterPathTracker

public FilterPathTracker()

Method Detail

dispose

public void dispose()

getCircuitTracker

public CircuitTracker getCircuitTracker(Message m)

preCircuitInvocation

public void preCircuitInvocation(Circuit c,
                                 Message m,
                                 java.lang.Object context)

Description copied from interface: MessageListener

Called before the first Filter in a given Circuit is invoked.

Specified by:

preCircuitInvocation in interface MessageListener

Overrides:

preCircuitInvocation in class MessageListenerAdapter

Parameters:

c - The Circuit about to be called.

m - The Message.

context - The context in which this circuit was called. In the case of the circuit being run via a reference from a filter, it may be null, an ESPK, or a String property which resolves to this circuit. In the case of the circuit being run from the Transport module, it will be that module itself (as per the 'source' parameter in Message.addCreationListener(com.vordel.circuit.MessageCreationListener)), or null if no source was specified to the creation callback.

postCircuitInvocation

public void postCircuitInvocation(Circuit c,
                                  Message m,
                                  boolean result,
                                  java.lang.Object context)

Description copied from interface: MessageListener

Called after a chain of Filters in the Circuit has been invoked.

Specified by:

postCircuitInvocation in interface MessageListener

Overrides:

postCircuitInvocation in class MessageListenerAdapter

Parameters:

c - The Circuit.

m - The Message.

result - The status which the Circuit returned - True if the Circuit passed, False if it failed. If it aborted, the MessageListener.abortedCircuitInvocation(com.vordel.config.Circuit, com.vordel.circuit.Message, com.vordel.circuit.CircuitAbortException) method is called instead.

context - Additional invocation context.

preFilterInvocation

public void preFilterInvocation(Circuit c,
                                MessageProcessor mp,
                                Message m,
                                MessageProcessor caller,
                                java.lang.Object context)

Description copied from interface: MessageListener

This method is called immediately before a Filter's MessageProcessor is invoked.

Specified by:

preFilterInvocation in interface MessageListener

Overrides:

preFilterInvocation in class MessageListenerAdapter

Parameters:

c - The Circuit context in which this processor was called.

mp - The MessageProcessor about to be invoked.

m - The Message before the processor works on it.

caller - The MessageProcessor which is calling this processor. Usually this is null, as the Circuit is the implicit caller of the processor. However, some processors are compound processors, i.e. they are themselves made up of other processors. In these cases, it's the caller processor which invokes the 'mp' in the context of the caller's Circuit. When this happens, the 'caller' parameter will be non-null.

context - Additional invocation context.

postFilterInvocation

public void postFilterInvocation(Circuit c,
                                 MessageProcessor mp,
                                 Message m,
                                 int resultType,
                                 MessageProcessor caller,
                                 java.lang.Object context)

Description copied from interface: MessageListener

This method is called when a Filter's MessageProcessor has finished execution.

Specified by:

postFilterInvocation in interface MessageListener

Overrides:

postFilterInvocation in class MessageListenerAdapter

Parameters:

c - The Circuit context in which this processor was called.

mp - The MessageProcessor which was invoked.

m - The Message as populated after invocation.

resultType - one of

• FilterInvocation.RESULT_SUCCESS The processor completed successfully
• FilterInvocation.RESULT_FAILURE The processor failed
• FilterInvocation.RESULT_EXCEPTION The processor threw an exception

caller - The MessageProcessor which called this processor. Usually this is null. See MessageListener.preFilterInvocation(com.vordel.config.Circuit, com.vordel.circuit.MessageProcessor, com.vordel.circuit.Message, com.vordel.circuit.MessageProcessor, java.lang.Object).

context - Additional invocation context.

preCircuitProcessing

public void preCircuitProcessing(Circuit c,
                                 Message m,
                                 java.lang.Object context)

Description copied from interface: MessageListener

Called when the message originator has completed initializing the Message, and we are about to start processing in the Circuit-space.

Specified by:

preCircuitProcessing in interface MessageListener

Overrides:

preCircuitProcessing in class MessageListenerAdapter

Parameters:

c - The Circuit which is about to be invoked.

m - The Message.

context - The Message originator, or null.

postCircuitProcessing

public void postCircuitProcessing(Message message,
                                  int result)

Description copied from interface: MessageListener

Called when all processing in the Circuit-space is completed.

Specified by:

postCircuitProcessing in interface MessageListener

Overrides:

postCircuitProcessing in class MessageListenerAdapter

Parameters:

message - The Message.

result - The result of Circuit processing. One of:

• ResponseStatusRecord.STATUS_ERROR The Circuit aborted
• ResponseStatusRecord.STATUS_PASS The Circuit passed
• ResponseStatusRecord.STATUS_FAIL The Circuit failed

preFaultHandlerInvocation

public void preFaultHandlerInvocation(Circuit c,
                                      MessageProcessor faultHandler,
                                      Message m,
                                      CircuitAbortException fault)

Description copied from interface: MessageListener

Called before attempting to handle a previous CircuitAbortException with a specific fault-handling MessageProcessor.

Specified by:

preFaultHandlerInvocation in interface MessageListener

Overrides:

preFaultHandlerInvocation in class MessageListenerAdapter

Parameters:

c - The Circuit in whose context the faultHander will execute.

faultHandler - The fault handler MessageProcessor we're about to invoke.

m - The Message.

fault - The CircuitAbortException which brought us here.

tracePath

public static void tracePath(CircuitCallRecord cip,
                             int level)

messageCreated

public void messageCreated(Message m,
                           java.lang.Object source)

Description copied from interface: MessageCreationListener

Called once the message is created, but before the source has populated any properties.

Specified by:

messageCreated in interface MessageCreationListener

Parameters:

m - The newly created Message.

source - The originator of the message. Usually a transport module, it may be null.