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#ifndef _PRAGMA_COPYRIGHT_
#define _PRAGMA_COPYRIGHT_
#pragma comment(copyright, "%Z% %I% %W% %D% %T%\0")
#endif /* _PRAGMA_COPYRIGHT_ */
/****************************************************************************
* Copyright (c) 2008, 2010 IBM Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0s
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
Classes: FilterProcessor
Description: Properties of class 'FilterProcessor':
input: a. a message queue
output: a. a stream
b. a message queue
action: use user-defined filter handlers to process the messages
Author: Nicole Nie
History:
Date Who ID Description
-------- --- --- -----------
02/10/09 nieyy Initial code (D153875)
****************************************************************************/
#include "filterproc.hpp"
#include <assert.h>
#include "log.hpp"
#include "exception.hpp"
#include "socket.hpp"
#include "statemachine.hpp"
#include "ctrlblock.hpp"
#include "message.hpp"
#include "stream.hpp"
#include "filter.hpp"
#include "filterlist.hpp"
#include "queue.hpp"
#include "eventntf.hpp"
#include "observer.hpp"
FilterProcessor::FilterProcessor(int hndl)
: Processor(hndl), filtered(false), curFilterID(SCI_FILTER_NULL)
{
name = "UpstreamFilter";
inQueue = NULL;
outQueue = NULL;
observer = NULL;
}
Message * FilterProcessor::read()
{
assert(inQueue);
Message *msg = NULL;
filtered = false;
msg = inQueue->consume();
return msg;
}
void FilterProcessor::process(Message * msg)
{
assert(msg);
int id = msg->getFilterID();
if (id != SCI_FILTER_NULL) {
Filter *filter = gFilterList->getFilter(id);
// call user's filter handler
if (filter != NULL) {
curFilterID = id;
filtered = true;
filter->input(msg->getGroup(), msg->getContentBuf(), msg->getContentLen());
}
}
}
void FilterProcessor::write(Message * msg)
{
assert(outQueue);
if (filtered) {
inQueue->remove();
return;
}
if ((msg->getType() == Message::INIT_ACK) &&
(gCtrlBlock->getMyRole() == CtrlBlock::FRONT_END)) {
struct eventRC {
int num;
int count;
} *frc;
frc = (eventRC *)gNotifier->getRetVal(msg->getID());
frc->count++;
if (frc->count == frc->num) {
gNotifier->notify(msg->getID());
}
inQueue->remove();
return;
}
if (observer) {
observer->notify();
}
msg->setRefCount(msg->getRefCount() + 1);
outQueue->produce(msg);
inQueue->remove();
}
void FilterProcessor::seize()
{
gStateMachine->parse(StateMachine::FATAL_EXCEPTION);
}
void FilterProcessor::clean()
{
// no action
}
bool FilterProcessor::isActive()
{
return gCtrlBlock->isEnabled() || (inQueue->getSize() > 0);
}
void FilterProcessor::deliever(Message * msg)
{
if (observer) {
observer->notify();
}
outQueue->produce(msg);
}
int FilterProcessor::getCurFilterID()
{
return curFilterID;
}
void FilterProcessor::setInQueue(MessageQueue * queue)
{
inQueue = queue;
}
void FilterProcessor::setOutQueue(MessageQueue * queue)
{
outQueue = queue;
}
void FilterProcessor::setObserver(Observer * ob)
{
observer = ob;
}
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