void
TransientTopicImpl::link(const TopicPrx& topic, Ice::Int cost, const Ice::Current&)
{
TopicInternalPrx internal = TopicInternalPrx::uncheckedCast(topic);
TopicLinkPrx link = internal->getLinkProxy();
TraceLevelsPtr traceLevels = _instance->traceLevels();
if(traceLevels->topic > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->topicCat);
out << _name << ": link " << _instance->communicator()->identityToString(topic->ice_getIdentity())
<< " cost " << cost;
}
Lock sync(*this);
Ice::Identity id = topic->ice_getIdentity();
SubscriberRecord record;
record.id = id;
record.obj = link;
record.theTopic = topic;
record.topicName = _name;
record.link = true;
record.cost = cost;
vector<SubscriberPtr>::iterator p = find(_subscribers.begin(), _subscribers.end(), record.id);
if(p != _subscribers.end())
{
throw LinkExists(IceStormInternal::identityToTopicName(id));
}
SubscriberPtr subscriber = Subscriber::create(_instance, record);
_subscribers.push_back(subscriber);
}
void
TransientTopicImpl::unlink(const TopicPrx& topic, const Ice::Current&)
{
Lock sync(*this);
if(_destroyed)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__);
}
Ice::Identity id = topic->ice_getIdentity();
vector<SubscriberPtr>::iterator p = find(_subscribers.begin(), _subscribers.end(), id);
if(p == _subscribers.end())
{
string name = IceStormInternal::identityToTopicName(id);
TraceLevelsPtr traceLevels = _instance->traceLevels();
if(traceLevels->topic > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->topicCat);
out << _name << ": unlink " << name << " failed - not linked";
}
throw NoSuchLink(name);
}
TraceLevelsPtr traceLevels = _instance->traceLevels();
if(traceLevels->topic > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->topicCat);
out << _name << " unlink " << _instance->communicator()->identityToString(id);
}
// Remove the subscriber from the subscribers list. Note
// that its possible that the subscriber isn't in the list, but is
// in the database if the subscriber was locally reaped.
p = find(_subscribers.begin(), _subscribers.end(), id);
if(p != _subscribers.end())
{
(*p)->destroy();
_subscribers.erase(p);
}
}
void
TopicImpl::unlink(const TopicPrx& topic)
{
IceUtil::Mutex::Lock sync(_subscribersMutex);
if(_destroyed)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__);
}
Ice::Identity id = topic->ice_getIdentity();
vector<SubscriberPtr>::const_iterator p = find(_subscribers.begin(), _subscribers.end(), id);
if(p == _subscribers.end())
{
string name = identityToTopicName(id);
TraceLevelsPtr traceLevels = _instance->traceLevels();
if(traceLevels->topic > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->topicCat);
out << _name << ": unlink " << name << " failed - not linked";
}
NoSuchLink ex;
ex.name = name;
throw ex;
}
TraceLevelsPtr traceLevels = _instance->traceLevels();
if(traceLevels->topic > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->topicCat);
out << _name << " unlink " << _instance->communicator()->identityToString(id);
}
Ice::IdentitySeq ids;
ids.push_back(id);
removeSubscribers(ids);
}
void
TopicImpl::link(const TopicPrx& topic, Ice::Int cost)
{
TopicInternalPrx internal = TopicInternalPrx::uncheckedCast(topic);
TopicLinkPrx link = internal->getLinkProxy();
TraceLevelsPtr traceLevels = _instance->traceLevels();
if(traceLevels->topic > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->topicCat);
out << _name << ": link " << _instance->communicator()->identityToString(topic->ice_getIdentity())
<< " cost " << cost;
}
IceUtil::Mutex::Lock sync(_subscribersMutex);
Ice::Identity id = topic->ice_getIdentity();
SubscriberRecord record;
record.id = id;
record.obj = link;
record.theTopic = topic;
record.topicName = _name;
record.link = true;
record.cost = cost;
vector<SubscriberPtr>::iterator p = find(_subscribers.begin(), _subscribers.end(), record.id);
if(p != _subscribers.end())
{
string name = identityToTopicName(id);
LinkExists ex;
ex.name = name;
throw ex;
}
LogUpdate llu;
SubscriberPtr subscriber = Subscriber::create(_instance, record);
for(;;)
{
try
{
DatabaseConnectionPtr connection = _connectionPool->newConnection();
TransactionHolder txn(connection);
SubscriberRecordKey key;
key.topic = _id;
key.id = id;
SubscribersWrapperPtr subscribersWrapper = _connectionPool->getSubscribers(connection);
subscribersWrapper->put(key, record);
LLUWrapperPtr lluWrapper = _connectionPool->getLLU(connection);
llu = lluWrapper->get();
llu.iteration++;
lluWrapper->put(llu);
txn.commit();
break;
}
catch(const DeadlockException&)
{
continue;
}
catch(const DatabaseException& ex)
{
halt(_instance->communicator(), ex);
}
}
_subscribers.push_back(subscriber);
_instance->observers()->addSubscriber(llu, _name, record);
}
void
TopicImpl::link(const TopicPrx& topic, Ice::Int cost)
{
TopicInternalPrx internal = TopicInternalPrx::uncheckedCast(topic);
TopicLinkPrx link = internal->getLinkProxy();
TraceLevelsPtr traceLevels = _instance->traceLevels();
if(traceLevels->topic > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->topicCat);
out << _name << ": link " << _instance->communicator()->identityToString(topic->ice_getIdentity())
<< " cost " << cost;
}
IceUtil::Mutex::Lock sync(_subscribersMutex);
Ice::Identity id = topic->ice_getIdentity();
SubscriberRecord record;
record.id = id;
record.obj = link;
record.theTopic = topic;
record.topicName = _name;
record.link = true;
record.cost = cost;
vector<SubscriberPtr>::iterator p = find(_subscribers.begin(), _subscribers.end(), record.id);
if(p != _subscribers.end())
{
string name = IceStormInternal::identityToTopicName(id);
LinkExists ex;
ex.name = name;
throw ex;
}
LogUpdate llu;
SubscriberPtr subscriber = Subscriber::create(_instance, record);
try
{
IceDB::ReadWriteTxn txn(_instance->dbEnv());
SubscriberRecordKey key;
key.topic = _id;
key.id = id;
_subscriberMap.put(txn, key, record);
llu = getIncrementedLLU(txn, _lluMap);
txn.commit();
}
catch(const IceDB::LMDBException& ex)
{
logError(_instance->communicator(), ex);
throw; // will become UnknownException in caller
}
_subscribers.push_back(subscriber);
_instance->observers()->addSubscriber(llu, _name, record);
}