void
IceInternal::LocatorInfo::clearCache(const ReferencePtr& ref)
{
assert(ref->isIndirect());
if(!ref->isWellKnown())
{
vector<EndpointIPtr> endpoints = _table->removeAdapterEndpoints(ref->getAdapterId());
if(!endpoints.empty() && ref->getInstance()->traceLevels()->location >= 2)
{
trace("removed endpoints from locator table", ref, endpoints);
}
}
else
{
ReferencePtr r = _table->removeObjectReference(ref->getIdentity());
if(r)
{
if(!r->isIndirect())
{
if(ref->getInstance()->traceLevels()->location >= 2)
{
trace("removed endpoints from locator table", ref, r->getEndpoints());
}
}
else if(!r->isWellKnown())
{
clearCache(r);
}
}
}
}
void
IceInternal::LocatorInfo::getEndpoints(const ReferencePtr& ref,
const ReferencePtr& wellKnownRef,
int ttl,
const GetEndpointsCallbackPtr& callback)
{
assert(ref->isIndirect());
vector<EndpointIPtr> endpoints;
if(!ref->isWellKnown())
{
if(!_table->getAdapterEndpoints(ref->getAdapterId(), ttl, endpoints))
{
if(_background && !endpoints.empty())
{
getAdapterRequest(ref)->addCallback(ref, wellKnownRef, ttl, 0);
}
else
{
getAdapterRequest(ref)->addCallback(ref, wellKnownRef, ttl, callback);
return;
}
}
}
else
{
ReferencePtr r;
if(!_table->getObjectReference(ref->getIdentity(), ttl, r))
{
if(_background && r)
{
getObjectRequest(ref)->addCallback(ref, 0, ttl, 0);
}
else
{
getObjectRequest(ref)->addCallback(ref, 0, ttl, callback);
return;
}
}
if(!r->isIndirect())
{
endpoints = r->getEndpoints();
}
else if(!r->isWellKnown())
{
getEndpoints(r, ref, ttl, callback);
return;
}
}
assert(!endpoints.empty());
if(ref->getInstance()->traceLevels()->location >= 1)
{
getEndpointsTrace(ref, endpoints, true);
}
if(callback)
{
callback->setEndpoints(endpoints, true);
}
}
vector<EndpointIPtr>
IceInternal::LocatorInfo::Request::getEndpoints(const ReferencePtr& ref,
const ReferencePtr& wellKnownRef,
int ttl,
bool& cached)
{
IceUtil::Monitor<IceUtil::Mutex>::Lock sync(_monitor);
if(!_response || _exception.get())
{
if(wellKnownRef) // This request is to resolve the endpoints of a cached well-known object reference
{
_wellKnownRefs.push_back(wellKnownRef);
}
if(!_sent)
{
_sent = true;
sync.release();
send(); // send() might call exception() from this thread so we need to release the mutex.
sync.acquire();
}
while(!_response && !_exception.get())
{
_monitor.wait();
}
}
if(_exception.get())
{
_locatorInfo->getEndpointsException(ref, *_exception.get()); // This throws.
}
assert(_response);
vector<EndpointIPtr> endpoints;
if(_proxy)
{
ReferencePtr r = _proxy->__reference();
if(!r->isIndirect())
{
endpoints = r->getEndpoints();
}
else if(ref->isWellKnown() && !r->isWellKnown())
{
//
// We're resolving the endpoints of a well-known object and the proxy returned
// by the locator is an indirect proxy. We now need to resolve the endpoints
// of this indirect proxy.
//
return _locatorInfo->getEndpoints(r, ref, ttl, cached);
}
}
cached = false;
if(_ref->getInstance()->traceLevels()->location >= 1)
{
_locatorInfo->getEndpointsTrace(ref, endpoints, false);
}
return endpoints;
}
void
IceInternal::LocatorInfo::finishRequest(const ReferencePtr& ref,
const vector<ReferencePtr>& wellKnownRefs,
const Ice::ObjectPrx& proxy,
bool notRegistered)
{
if(!proxy || proxy->__reference()->isIndirect())
{
//
// Remove the cached references of well-known objects for which we tried
// to resolved the endpoints if these endpoints are empty.
//
for(vector<ReferencePtr>::const_iterator q = wellKnownRefs.begin(); q != wellKnownRefs.end(); ++q)
{
_table->removeObjectReference((*q)->getIdentity());
}
}
if(!ref->isWellKnown())
{
if(proxy && !proxy->__reference()->isIndirect()) // Cache the adapter endpoints.
{
_table->addAdapterEndpoints(ref->getAdapterId(), proxy->__reference()->getEndpoints());
}
else if(notRegistered) // If the adapter isn't registered anymore, remove it from the cache.
{
_table->removeAdapterEndpoints(ref->getAdapterId());
}
IceUtil::Mutex::Lock sync(*this);
assert(_adapterRequests.find(ref->getAdapterId()) != _adapterRequests.end());
_adapterRequests.erase(ref->getAdapterId());
}
else
{
if(proxy && !proxy->__reference()->isWellKnown()) // Cache the well-known object reference.
{
_table->addObjectReference(ref->getIdentity(), proxy->__reference());
}
else if(notRegistered) // If the well-known object isn't registered anymore, remove it from the cache.
{
_table->removeObjectReference(ref->getIdentity());
}
IceUtil::Mutex::Lock sync(*this);
assert(_objectRequests.find(ref->getIdentity()) != _objectRequests.end());
_objectRequests.erase(ref->getIdentity());
}
}
void
IceInternal::LocatorInfo::RequestCallback::response(const LocatorInfoPtr& locatorInfo, const Ice::ObjectPrx& proxy)
{
vector<EndpointIPtr> endpoints;
if(proxy)
{
ReferencePtr r = proxy->__reference();
if(_ref->isWellKnown() && !isSupported(_ref->getEncoding(), r->getEncoding()))
{
//
// If a well-known proxy and the returned proxy encoding
// isn't supported, we're done: there's no compatible
// endpoint we can use.
//
}
else if(!r->isIndirect())
{
endpoints = r->getEndpoints();
}
else if(_ref->isWellKnown() && !r->isWellKnown())
{
//
// We're resolving the endpoints of a well-known object and the proxy returned
// by the locator is an indirect proxy. We now need to resolve the endpoints
// of this indirect proxy.
//
locatorInfo->getEndpoints(r, _ref, _ttl, _callback);
return;
}
}
if(_ref->getInstance()->traceLevels()->location >= 1)
{
locatorInfo->getEndpointsTrace(_ref, endpoints, false);
}
if(_callback)
{
_callback->setEndpoints(endpoints, false);
}
}
void
IceInternal::LocatorInfo::trace(const string& msg, const ReferencePtr& ref, const vector<EndpointIPtr>& endpoints)
{
assert(ref->isIndirect());
Trace out(ref->getInstance()->initializationData().logger, ref->getInstance()->traceLevels()->locationCat);
out << msg << '\n';
if(!ref->isWellKnown())
{
out << "adapter = " << ref->getAdapterId() << '\n';
}
else
{
out << "object = " << ref->getInstance()->identityToString(ref->getIdentity()) << '\n';
}
const char* sep = endpoints.size() > 1 ? ":" : "";
ostringstream o;
transform(endpoints.begin(), endpoints.end(), ostream_iterator<string>(o, sep),
Ice::constMemFun(&Endpoint::toString));
out << "endpoints = " << o.str();
}
bool
Ice::ObjectAdapterI::isLocal(const ObjectPrx& proxy) const
{
//
// NOTE: it's important that isLocal() doesn't perform any blocking operations as
// it can be called for AMI invocations if the proxy has no delegate set yet.
//
ReferencePtr ref = proxy->__reference();
if(ref->isWellKnown())
{
//
// Check the active servant map to see if the well-known
// proxy is for a local object.
//
return _servantManager->hasServant(ref->getIdentity());
}
else if(ref->isIndirect())
{
//
// Proxy is local if the reference adapter id matches this
// adapter id or replica group id.
//
return ref->getAdapterId() == _id || ref->getAdapterId() == _replicaGroupId;
}
else
{
vector<EndpointIPtr> endpoints = ref->getEndpoints();
IceUtil::Monitor<IceUtil::RecMutex>::Lock sync(*this);
checkForDeactivation();
//
// Proxies which have at least one endpoint in common with the
// endpoints used by this object adapter are considered local.
//
for(vector<EndpointIPtr>::const_iterator p = endpoints.begin(); p != endpoints.end(); ++p)
{
for(vector<IncomingConnectionFactoryPtr>::const_iterator q = _incomingConnectionFactories.begin();
q != _incomingConnectionFactories.end(); ++q)
{
if((*p)->equivalent((*q)->endpoint()))
{
return true;
}
}
for(vector<EndpointIPtr>::const_iterator r = _publishedEndpoints.begin();
r != _publishedEndpoints.end(); ++r)
{
if((*p)->equivalent(*r))
{
return true;
}
}
}
//
// Proxies which have at least one endpoint in common with the
// router's server proxy endpoints (if any), are also considered
// local.
//
if(_routerInfo && _routerInfo->getRouter() == proxy->ice_getRouter())
{
for(vector<EndpointIPtr>::const_iterator p = endpoints.begin(); p != endpoints.end(); ++p)
{
for(vector<EndpointIPtr>::const_iterator r = _routerEndpoints.begin(); r != _routerEndpoints.end(); ++r)
{
if((*p)->equivalent(*r))
{
return true;
}
}
}
}
}
return false;
}
int
IceInternal::ProxyFactory::checkRetryAfterException(const LocalException& ex,
const ReferencePtr& ref,
bool sleep,
int& cnt) const
{
TraceLevelsPtr traceLevels = _instance->traceLevels();
LoggerPtr logger = _instance->initializationData().logger;
//
// We don't retry batch requests because the exception might have caused
// the all the requests batched with the connection to be aborted and we
// want the application to be notified.
//
if(ref->getMode() == Reference::ModeBatchOneway || ref->getMode() == Reference::ModeBatchDatagram)
{
ex.ice_throw();
}
const ObjectNotExistException* one = dynamic_cast<const ObjectNotExistException*>(&ex);
if(one)
{
if(ref->getRouterInfo() && one->operation == "ice_add_proxy")
{
//
// If we have a router, an ObjectNotExistException with an
// operation name "ice_add_proxy" indicates to the client
// that the router isn't aware of the proxy (for example,
// because it was evicted by the router). In this case, we
// must *always* retry, so that the missing proxy is added
// to the router.
//
ref->getRouterInfo()->clearCache(ref);
if(traceLevels->retry >= 1)
{
Trace out(logger, traceLevels->retryCat);
out << "retrying operation call to add proxy to router\n" << ex;
}
return 0; // We must always retry, so we don't look at the retry count.
}
else if(ref->isIndirect())
{
//
// We retry ObjectNotExistException if the reference is
// indirect.
//
if(ref->isWellKnown())
{
LocatorInfoPtr li = ref->getLocatorInfo();
if(li)
{
li->clearCache(ref);
}
}
}
else
{
//
// For all other cases, we don't retry
// ObjectNotExistException.
//
ex.ice_throw();
}
}
else if(dynamic_cast<const RequestFailedException*>(&ex))
{
//
// We don't retry other *NotExistException, which are all
// derived from RequestFailedException.
//
ex.ice_throw();
}
//
// There is no point in retrying an operation that resulted in a
// MarshalException. This must have been raised locally (because
// if it happened in a server it would result in an
// UnknownLocalException instead), which means there was a problem
// in this process that will not change if we try again.
//
// The most likely cause for a MarshalException is exceeding the
// maximum message size, which is represented by the subclass
// MemoryLimitException. For example, a client can attempt to send
// a message that exceeds the maximum memory size, or accumulate
// enough batch requests without flushing that the maximum size is
// reached.
//
// This latter case is especially problematic, because if we were
// to retry a batch request after a MarshalException, we would in
// fact silently discard the accumulated requests and allow new
// batch requests to accumulate. If the subsequent batched
// requests do not exceed the maximum message size, it appears to
// the client that all of the batched requests were accepted, when
// in reality only the last few are actually sent.
//
if(dynamic_cast<const MarshalException*>(&ex))
{
ex.ice_throw();
}
++cnt;
assert(cnt > 0);
int interval = -1;
if(cnt == static_cast<int>(_retryIntervals.size() + 1) &&
dynamic_cast<const CloseConnectionException*>(&ex))
{
//
// A close connection exception is always retried at least once, even if the retry
// limit is reached.
//
interval = 0;
}
else if(cnt > static_cast<int>(_retryIntervals.size()))
{
if(traceLevels->retry >= 1)
{
Trace out(logger, traceLevels->retryCat);
out << "cannot retry operation call because retry limit has been exceeded\n" << ex;
}
ex.ice_throw();
}
else
{
interval = _retryIntervals[cnt - 1];
}
if(traceLevels->retry >= 1)
{
Trace out(logger, traceLevels->retryCat);
out << "retrying operation call";
if(interval > 0)
{
out << " in " << interval << "ms";
}
out << " because of exception\n" << ex;
}
if(sleep && interval > 0)
{
//
// Sleep before retrying.
//
IceUtil::ThreadControl::sleep(IceUtil::Time::milliSeconds(interval));
}
return interval;
}