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|
// **********************************************************************
//
// Copyright (c) 2003
// ZeroC, Inc.
// Billerica, MA, USA
//
// All Rights Reserved.
//
// Ice is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License version 2 as published by
// the Free Software Foundation.
//
// **********************************************************************
#include <Ice/RoutingTable.h>
#include <Glacier/Blobject.h>
using namespace std;
using namespace Ice;
using namespace Glacier;
Glacier::TwowayThrottle::TwowayThrottle(const CommunicatorPtr& communicator, bool reverse) :
_communicator(communicator),
_reverse(reverse),
_properties(_communicator->getProperties()),
_logger(_communicator->getLogger()),
_traceLevel(_properties->getPropertyAsInt("Glacier.Router.Trace.Throttle")),
_max(_reverse ?
_properties->getPropertyAsInt("Glacier.Router.Server.Throttle.Twoways") :
_properties->getPropertyAsInt("Glacier.Router.Client.Throttle.Twoways")),
_count(0)
{
}
Glacier::TwowayThrottle::~TwowayThrottle()
{
assert(_count == 0);
}
void
Glacier::TwowayThrottle::twowayStarted(const Ice::ObjectPrx& proxy, const Ice::Current& current)
{
if(_max <= 0)
{
return;
}
{
IceUtil::Monitor<IceUtil::Mutex>::Lock sync(*this);
assert(_count <= _max);
while(_count == _max)
{
if(_traceLevel >= 1)
{
Trace out(_logger, "Glacier");
out << "throttling ";
if(_reverse)
{
out << "reverse ";
}
out << "twoway call:";
out << "\nnumber of calls = " << _count;
out << "\nproxy = " << _communicator->proxyToString(proxy);
out << "\noperation = " << current.operation;
}
wait();
}
++_count;
}
}
void
Glacier::TwowayThrottle::twowayFinished()
{
if(_max <= 0)
{
return;
}
{
IceUtil::Monitor<IceUtil::Mutex>::Lock sync(*this);
assert(_count <= _max);
if(_count == _max)
{
notifyAll();
}
--_count;
}
}
#ifdef __HP_aCC
//
// Compiler bug!
// The conditional in Glacier::Blobject::Blobject below result in a
// std::exception "thread synchronization error" at runtime
// when using string litterals (looks like a RogueWave bug)
// The work around is to use static strings:
//
static const string traceServer = "Glacier.Router.Trace.Server";
static const string traceClient = "Glacier.Router.Trace.Client";
static const string serverForwardContext = "Glacier.Router.Server.ForwardContext";
static const string clientForwardContext = "Glacier.Router.Client.ForwardContext";
static const string serverSleepTime = "Glacier.Router.Server.SleepTime";
static const string clientSleepTime = "Glacier.Router.Client.SleepTime";
#endif
Glacier::Blobject::Blobject(const CommunicatorPtr& communicator, bool reverse) :
_communicator(communicator),
_reverse(reverse),
_properties(_communicator->getProperties()),
_logger(_communicator->getLogger()),
#ifdef __HP_aCC
//
// Compiler bug, see above
//
_traceLevel(_reverse ?
_properties->getPropertyAsInt(traceServer) :
_properties->getPropertyAsInt(traceClient)),
_forwardContext(_reverse ?
_properties->getPropertyAsInt(serverForwardContext) > 0 :
_properties->getPropertyAsInt(clientForwardContext) > 0),
_sleepTime(_reverse ?
IceUtil::Time::milliSeconds(_properties->getPropertyAsInt(serverSleepTime)) :
IceUtil::Time::milliSeconds(_properties->getPropertyAsInt(clientSleepTime))),
#else
_traceLevel(_reverse ?
_properties->getPropertyAsInt("Glacier.Router.Trace.Server") :
_properties->getPropertyAsInt("Glacier.Router.Trace.Client")),
_forwardContext(_reverse ?
_properties->getPropertyAsInt("Glacier.Router.Server.ForwardContext") > 0 :
_properties->getPropertyAsInt("Glacier.Router.Client.ForwardContext") > 0),
_sleepTime(_reverse ?
IceUtil::Time::milliSeconds(_properties->getPropertyAsInt("Glacier.Router.Server.SleepTime")) :
IceUtil::Time::milliSeconds(_properties->getPropertyAsInt("Glacier.Router.Client.SleepTime"))),
#endif
_twowayThrottle(_communicator, _reverse)
{
_requestQueue = new RequestQueue(_communicator, _traceLevel, _reverse, _sleepTime);
_requestQueueControl = _requestQueue->start();
}
Glacier::Blobject::~Blobject()
{
assert(!_communicator);
assert(!_requestQueue);
}
void
Glacier::Blobject::destroy()
{
//
// No mutex protection necessary, destroy is only called after all
// object adapters have shut down.
//
_communicator = 0;
_requestQueue->destroy();
_requestQueueControl.join();
_requestQueue = 0;
}
class GlacierCB : public AMI_Object_ice_invoke
{
public:
GlacierCB(const AMD_Object_ice_invokePtr& cb, TwowayThrottle& twowayThrottle) :
_cb(cb),
_twowayThrottle(twowayThrottle)
{
}
virtual
~GlacierCB()
{
_twowayThrottle.twowayFinished();
}
virtual void
ice_response(bool ok, const ::std::vector< ::Ice::Byte>& outParams)
{
_cb->ice_response(ok, outParams);
}
virtual void
ice_exception(const ::IceUtil::Exception& ex)
{
_cb->ice_exception(ex);
}
private:
AMD_Object_ice_invokePtr _cb;
TwowayThrottle& _twowayThrottle;
};
void
Glacier::Blobject::invoke(ObjectPrx& proxy, const AMD_Object_ice_invokePtr& amdCB, const vector<Byte>& inParams,
const Current& current)
{
try
{
bool missive = modifyProxy(proxy, current);
if(missive) // Batch routing?
{
vector<Byte> dummy;
amdCB->ice_response(true, dummy);
_requestQueue->addMissive(new Request(proxy, inParams, current, _forwardContext));
}
else // Regular routing.
{
AMI_Object_ice_invokePtr amiCB;
if(proxy->ice_isTwoway())
{
amiCB = new GlacierCB(amdCB, _twowayThrottle);
_twowayThrottle.twowayStarted(proxy, current);
}
else
{
vector<Byte> dummy;
amdCB->ice_response(true, dummy);
}
_requestQueue->addRequest(new Request(proxy, inParams, current, _forwardContext, amiCB));
}
}
catch(const Exception& ex)
{
if(_traceLevel >= 1)
{
Trace out(_logger, "Glacier");
if(_reverse)
{
out << "reverse ";
}
out << "routing exception:\n" << ex;
}
ex.ice_throw();
}
return;
}
bool
Glacier::Blobject::modifyProxy(ObjectPrx& proxy, const Current& current)
{
if(!current.facet.empty())
{
proxy = proxy->ice_newFacet(current.facet);
}
bool missive = false;
Context::const_iterator p = current.ctx.find("_fwd");
if(p != current.ctx.end())
{
for(unsigned int i = 0; i < p->second.length(); ++i)
{
char option = p->second[i];
switch(option)
{
case 't':
{
proxy = proxy->ice_twoway();
missive = false;
break;
}
case 'o':
{
proxy = proxy->ice_oneway();
missive = false;
break;
}
case 'd':
{
proxy = proxy->ice_datagram();
missive = false;
break;
}
case 'O':
{
proxy = proxy->ice_batchOneway();
missive = true;
break;
}
case 'D':
{
proxy = proxy->ice_batchDatagram();
missive = true;
break;
}
case 's':
{
proxy = proxy->ice_secure(true);
break;
}
case 'z':
{
proxy = proxy->ice_compress(true);
break;
}
default:
{
Warning out(_logger);
out << "unknown forward option `" << option << "'";
break;
}
}
}
}
return missive;
}
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