void World::RelayOperation(const Operation & op, OpVector & res)
{
//A Relay operation with refno sent to ourselves signals that we should prune
//our registered relays in m_relays. This is a feature to allow for a timeout; if
//no Relay has been received from the destination Entity after a certain period
//we'll shut down the relay link.
if (op->getTo() == getId() && op->getFrom() == getId() && !op->isDefaultRefno()) {
auto I = m_relays.find(op->getRefno());
if (I != m_relays.end()) {
//Send an empty operation to signal that the relay has expired.
I->second.callback(Operation(), I->second.entityId);
m_relays.erase(I);
}
} else {
if (op->getArgs().empty()) {
log(ERROR, "World::RelayOperation no args.");
return;
}
Operation relayedOp = Atlas::Objects::smart_dynamic_cast<Operation>(
op->getArgs().front());
if (!relayedOp.isValid()) {
log(ERROR,
"World::RelayOperation first arg is not an operation.");
return;
}
//If a relay op has a refno, it's a response to a Relay op previously sent out to another
//entity, and we should signal that we have an incoming relayed op.
if (!op->isDefaultRefno()) {
//Note that the relayed op should be considered untrusted in this case, as it has originated
//from a random entity or its mind.
auto I = m_relays.find(op->getRefno());
if (I == m_relays.end()) {
log(WARNING,
"World::RelayOperation could not find registrered Relay with refno.");
return;
}
//Make sure that this op really comes from the entity the original Relay op was sent to.
if (op->getFrom() != I->second.entityId) {
log(WARNING,
"World::RelayOperation got relay op with mismatching 'from'.");
return;
}
//Get the relayed operation and call the callback.
I->second.callback(relayedOp, I->second.entityId);
m_relays.erase(I);
} else {
//Send it on to the basic Entity relay mechanism
Entity::RelayOperation(op, res);
}
}
}
void RuleTraversalTask::operation(const Operation & op, OpVector & res)
{
if (!op->isDefaultRefno() && op->getRefno() == mSerial) {
if (op->getClassNo() == Atlas::Objects::Operation::INFO_NO) {
if (!op->getArgs().empty()) {
const auto& arg = op->getArgs().front();
if (arg.isValid()) {
bool result = mVisitor(arg);
if (result) {
Element childrenElement;
if (arg->copyAttr("children", childrenElement) == 0 && childrenElement.isList() && !childrenElement.List().empty()) {
const ListType& childrenList = childrenElement.asList();
mStack.emplace_back();
for (auto& childElement : childrenList) {
if (childElement.isString()) {
mStack.back().children.push_back(childElement.String());
}
}
mStack.back().currentChildIterator = mStack.back().children.begin();
getRule(*mStack.back().currentChildIterator, res);
return;
} else {
while (!mStack.empty()) {
StackEntry& stackEntry = mStack.back();
stackEntry.currentChildIterator++;
if (stackEntry.currentChildIterator == stackEntry.children.end()) {
mStack.pop_back();
} else {
getRule(*stackEntry.currentChildIterator, res);
return;
}
}
m_complete = true;
}
} else {
m_complete = true;
}
}
}
}
}
}
void EntityImporterBase::infoArrived(const Operation & op, OpVector & res)
{
if (op->isDefaultRefno()) {
return;
}
if (op->isDefaultArgs() || op->getArgs().empty()) {
S_LOG_FAILURE("Info with no arg.");
return;
}
const Root & arg = op->getArgs().front();
if (m_state == RULE_WALKING) {
auto& current = mRuleStack.back();
if (arg->getId() != current.definition->getId()) {
S_LOG_WARNING("Got info on rule " << arg->getId() << " when expecting " << current.definition->getId() << ".");
return;
}
updateRule(arg, current.definition, res);
} else if (m_state == RULE_CREATING) {
mStats.rulesProcessedCount++;
mStats.rulesCreateCount++;
EventProgress.emit();
walkRules(res);
} else if (m_state == RULE_UPDATING) {
mStats.rulesProcessedCount++;
mStats.rulesUpdateCount++;
EventProgress.emit();
walkRules(res);
} else if (m_state == ENTITY_CREATING) {
if (!op.isValid()) {
return;
}
mNewIds.insert(arg->getId());
StackEntry & current = mTreeStack.back();
current.restored_id = arg->getId();
S_LOG_VERBOSE("Created: " << arg->getParent() << "(" << arg->getId() << ")");
auto I = mCreateEntityMapping.find(op->getRefno());
if (I != mCreateEntityMapping.end()) {
//Check if there's a mind that we should send further on
auto mindI = mPersistedMinds.find(I->second);
if (mindI != mPersistedMinds.end()) {
mResolvedMindMapping.emplace_back(arg->getId(), mindI->second);
}
mEntityIdMap.insert(std::make_pair(I->second, arg->getId()));
mCreateEntityMapping.erase(op->getRefno());
} else {
S_LOG_WARNING("Got info about create for an entity which we didn't seem to have sent.");
}
walkEntities(res);
} else if (m_state == ENTITY_WALKING) {
const RootEntity& ent = smart_dynamic_cast<RootEntity>(arg);
if (!ent.isValid()) {
S_LOG_FAILURE("Info response is not entity.");
return;
}
if (arg->isDefaultId()) {
S_LOG_FAILURE("Corrupted info response: no id.");
}
const std::string & id = arg->getId();
StackEntry & current = mTreeStack.back();
const RootEntity& obj = current.obj;
assert(id == obj->getId());
if (mNewIds.find(id) != mNewIds.end() || (mTreeStack.size() != 1 && ent->isDefaultLoc()) || ent->getParent() != obj->getParent()) {
createEntity(obj, res);
} else {
Root update = obj.copy();
current.restored_id = id;
S_LOG_VERBOSE("Updating: " << obj->getId() << " ," << obj->getParent());
update->removeAttrFlag(Atlas::Objects::Entity::CONTAINS_FLAG);
update->removeAttrFlag(Atlas::Objects::STAMP_FLAG);
Set set;
set->setArgs1(update);
set->setFrom(mAvatarId);
set->setTo(id);
set->setSerialno(newSerialNumber());
res.push_back(set);
//Check if there's a mind, and if so put it in our map of resolved entity-to-mind mappings (since we know the entity id)
auto mindI = mPersistedMinds.find(obj->getId());
if (mindI != mPersistedMinds.end()) {
mResolvedMindMapping.emplace_back(obj->getId(), mindI->second);
}
++mStats.entitiesProcessedCount;
++mStats.entitiesUpdateCount;
EventProgress.emit();
m_state = ENTITY_UPDATING;
}
}
}
void EntityImporterBase::errorArrived(const Operation & op, OpVector & res)
{
std::string errorMessage;
if (!op->getArgs().empty()) {
auto arg = op->getArgs().front();
if (arg->hasAttr("message")) {
const Atlas::Message::Element messageElem = arg->getAttr("message");
if (messageElem.isString()) {
errorMessage = messageElem.asString();
}
}
}
switch (m_state) {
case RULE_WALKING:
{
//An error here just means that the rule we asked for didn't exist on the server, and we need
//to create it. This is an expected result.
auto& current = mRuleStack.back();
auto definition = current.definition;
assert(definition.isValid());
createRule(definition, res);
}
break;
case RULE_CREATING:
{
mStats.rulesProcessedCount++;
mStats.rulesCreateErrorCount++;
//An error here means that something went wrong when trying to create a rule. This is wrong.
//It probably means that there's something wrong with the data we're sending.
auto& current = mRuleStack.back();
std::string ruleId = current.definition->getId();
S_LOG_FAILURE("Could not create rule with id '" << ruleId << "', continuing with next. Server message: " << errorMessage);
EventProgress.emit();
walkRules(res);
}
break;
case RULE_UPDATING:
{
mStats.rulesProcessedCount++;
//An error here means that something went wrong when trying to update a rule. This is wrong.
//It probably means that there's something wrong with the data we're sending.
auto& current = mRuleStack.back();
std::string ruleId = current.definition->getId();
S_LOG_FAILURE("Could not update rule with id '" << ruleId << "', continuing with next. Server message: " << errorMessage);
mStats.rulesCreateErrorCount++;
EventProgress.emit();
walkRules(res);
}
break;
case ENTITY_WALKING:
{
//An error here just means that the entity we asked for didn't exist on the server, and we need
//to create it. This is an expected result.
assert(!mTreeStack.empty());
StackEntry & current = mTreeStack.back();
const RootEntity& obj = current.obj;
assert(obj.isValid());
createEntity(obj, res);
}
break;
case ENTITY_CREATING:
{
//An error here means that something went wrong when trying to create an entity. This is wrong.
//It probably means that there's something wrong with the data we're sending. Either the
//persisted data is corrupt, or there have been changes on the server (for example entity types
//renamed or removed).
std::string entityType = "unknown";
auto I = mCreateEntityMapping.find(op->getRefno());
if (I != mCreateEntityMapping.end()) {
auto J = mPersistedEntities.find(I->second);
if (J != mPersistedEntities.end()) {
auto& entity = J->second;
entityType = entity->getParent();
}
}
S_LOG_FAILURE("Could not create entity of type '" << entityType << "', continuing with next. Server message: " << errorMessage);
mStats.entitiesCreateErrorCount++;
EventProgress.emit();
walkEntities(res);
}
break;
default:
S_LOG_FAILURE("Unexpected state in state machine: " << m_state << ". Server message: " << errorMessage);
break;
};
}
/// \brief Handle an Info op response sent as reply to a teleport request
///
/// @param op The Info op sent back as reply to a teleport request
/// @param res The result set of replies
void Peer::peerTeleportResponse(const Operation &op, OpVector &res)
{
log(INFO, "Got a peer teleport response");
// Response to a Create op
const std::vector<Root> & args = op->getArgs();
if (args.size() < 1) {
log(ERROR, "Malformed args in Info op");
return;
}
const Root & arg = args.front();
if (op->isDefaultRefno()) {
log(ERROR, "Response to teleport has no refno");
return;
}
long iid = op->getRefno();
CommPeer *peer = dynamic_cast<CommPeer*>(&m_commClient);
if(peer == 0) {
log(ERROR, "Unable to get CommPeer object");
return;
}
TeleportMap::iterator I = m_teleports.find(iid);
if (I == m_teleports.end()) {
log(ERROR, "Info op for unknown create");
return;
}
TeleportState *s = I->second;
assert (s != NULL);
s->setCreated();
log(INFO, String::compose("Entity with ID %1 replicated on peer", iid));
// This is the sender entity. This is retreived again rather than
// relying on a pointer (in the TeleportState object perhaps) as the
// entity might have been deleted in the time between sending and response
Entity * entity = BaseWorld::instance().getEntity(iid);
if (entity == 0) {
log(ERROR, String::compose("No entity found with ID: %1", iid));
// Clean up the teleport state object
m_teleports.erase(I);
return;
}
// If entity has a mind, add extra information in the Logout op
if (s->isMind()) {
Character * chr = dynamic_cast<Character *>(entity);
if (!chr) {
log(ERROR, "Entity is not a character");
return;
}
if (chr->m_externalMind == 0) {
log(ERROR, "No external mind (though teleport state claims it)");
return;
}
ExternalMind * mind = dynamic_cast<ExternalMind*>(chr->m_externalMind);
if (mind == 0 || !mind->isConnected()) {
log(ERROR, "Mind is NULL or not connected");
return;
}
std::vector<Root> logout_args;
Anonymous op_arg;
op_arg->setId(entity->getId());
logout_args.push_back(op_arg);
Anonymous ip_arg;
ip_arg->setAttr("teleport_host", peer->getHost());
ip_arg->setAttr("teleport_port", peer->getPort());
ip_arg->setAttr("possess_key", s->getPossessKey());
ip_arg->setAttr("possess_entity_id", arg->getId());
logout_args.push_back(ip_arg);
Logout logoutOp;
logoutOp->setArgs(logout_args);
logoutOp->setTo(entity->getId());
OpVector temp;
mind->operation(logoutOp, temp);
log(INFO, "Sent random key to connected mind");
}
// FIXME Remove from the world cleanly, not delete.
// Delete the entity from the current world
Delete delOp;
Anonymous del_arg;
del_arg->setId(entity->getId());
delOp->setArgs1(del_arg);
delOp->setTo(entity->getId());
entity->sendWorld(delOp);
log(INFO, "Deleted entity from current server");
logEvent(EXPORT_ENT, String::compose("%1 - %2 Exported entity",
getId(), entity->getId()));
// Clean up the teleport state object
m_teleports.erase(I);
}