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/*
* Copyright (c) 2010,
* Gavriloaie Eugen-Andrei (shiretu@gmail.com)
*
* This file is part of crtmpserver.
* crtmpserver is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* crtmpserver is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with crtmpserver. If not, see <http://www.gnu.org/licenses/>.
*/
#include "protocols/protocolfactorymanager.h"
#include "protocols/baseprotocolfactory.h"
#include "protocols/baseprotocol.h"
map<uint32_t, BaseProtocolFactory *> ProtocolFactoryManager::_factoriesById;
map<uint64_t, BaseProtocolFactory *> ProtocolFactoryManager::_factoriesByProtocolId;
map<string, BaseProtocolFactory *> ProtocolFactoryManager::_factoriesByChainName;
bool ProtocolFactoryManager::RegisterProtocolFactory(BaseProtocolFactory *pFactory) {
//1. Test to see if this factory is already registered
if (MAP_HAS1(_factoriesById, pFactory->GetId())) {
FATAL("Factory id %u already registered", pFactory->GetId());
return false;
}
//2. Test to see if the protocol chains exported by this factory are already in use
vector<string> protocolChains = pFactory->HandledProtocolChains();
FOR_VECTOR(protocolChains, i) {
if (MAP_HAS1(_factoriesByChainName, protocolChains[i])) {
FATAL("protocol chain %s already handled by factory %u",
STR(protocolChains[i]),
_factoriesByChainName[protocolChains[i]]->GetId());
return false;
}
}
//3. Test to see if the protocols exported by this factory are already in use
vector<uint64_t> protocols = pFactory->HandledProtocols();
FOR_VECTOR(protocols, i) {
if (MAP_HAS1(_factoriesByProtocolId, protocols[i])) {
FATAL("protocol %" PRIx64" already handled by factory %u", protocols[i],
_factoriesByProtocolId[protocols[i]]->GetId());
return false;
}
}
//4. Register everything
FOR_VECTOR(protocolChains, i) {
_factoriesByChainName[protocolChains[i]] = pFactory;
}
FOR_VECTOR(protocols, i) {
_factoriesByProtocolId[protocols[i]] = pFactory;
}
_factoriesById[pFactory->GetId()] = pFactory;
return true;
}
bool ProtocolFactoryManager::UnRegisterProtocolFactory(uint32_t factoryId) {
if (!MAP_HAS1(_factoriesById, factoryId)) {
WARN("Factory id not found: %u", factoryId);
return true;
}
return UnRegisterProtocolFactory(_factoriesById[factoryId]);
}
bool ProtocolFactoryManager::UnRegisterProtocolFactory(BaseProtocolFactory *pFactory) {
if (pFactory == NULL) {
WARN("pFactory is NULL");
return true;
}
if (!MAP_HAS1(_factoriesById, pFactory->GetId())) {
WARN("Factory id not found: %u", pFactory->GetId());
return true;
}
vector<string> protocolChains = pFactory->HandledProtocolChains();
vector<uint64_t> protocols = pFactory->HandledProtocols();
FOR_VECTOR(protocolChains, i) {
_factoriesByChainName.erase(protocolChains[i]);
}
FOR_VECTOR(protocols, i) {
_factoriesByProtocolId.erase(protocols[i]);
}
_factoriesById.erase(pFactory->GetId());
return true;
}
vector<uint64_t> ProtocolFactoryManager::ResolveProtocolChain(string name) {
if (!MAP_HAS1(_factoriesByChainName, name)) {
FATAL("chain %s not registered by any protocol factory", STR(name));
return vector<uint64_t > ();
}
return _factoriesByChainName[name]->ResolveProtocolChain(name);
}
BaseProtocol *ProtocolFactoryManager::CreateProtocolChain(string name,
Variant ¶meters) {
vector<uint64_t> chain = ResolveProtocolChain(name);
if (chain.size() == 0) {
FATAL("Unable to create protocol chain");
return NULL;
}
return CreateProtocolChain(chain, parameters);
}
BaseProtocol *ProtocolFactoryManager::CreateProtocolChain(vector<uint64_t> &chain,
Variant ¶meters) {
BaseProtocol *pResult = NULL;
//1. Check and see if all the protocols are handled by a factory
FOR_VECTOR(chain, i) {
if (!MAP_HAS1(_factoriesByProtocolId, chain[i])) {
FATAL("protocol %" PRIx64" not handled by anyone", chain[i]);
return NULL;
}
}
//2. Spawn the protocols
bool failed = false;
FOR_VECTOR(chain, i) {
BaseProtocol *pProtocol = _factoriesByProtocolId[chain[i]]->SpawnProtocol(
chain[i], parameters);
if (pProtocol == NULL) {
FATAL("Unable to spawn protocol %s handled by factory %u",
STR(tagToString(chain[i])),
_factoriesByProtocolId[chain[i]]->GetId());
failed = true;
break;
}
if (pResult != NULL)
pResult->SetNearProtocol(pProtocol);
pResult = pProtocol;
}
if (failed) {
if (pResult != NULL)
delete pResult->GetFarEndpoint();
pResult = NULL;
} else {
pResult = pResult->GetNearEndpoint();
}
return pResult;
}
string ProtocolFactoryManager::Dump() {
string result = "Factories by id\n";
FOR_MAP(_factoriesById, uint32_t, BaseProtocolFactory *, i) {
result += format("\t%u\t%p\n", MAP_KEY(i), MAP_VAL(i));
}
result += "Factories by protocol id\n";
FOR_MAP(_factoriesByProtocolId, uint64_t, BaseProtocolFactory *, i) {
result += format("\t%s\t%p\n",
STR(tagToString(MAP_KEY(i))),
MAP_VAL(i));
}
result += "Factories by chain name\n";
FOR_MAP(_factoriesByChainName, string, BaseProtocolFactory *, i) {
result += format("\t%s\t%p\n",
STR(MAP_KEY(i)),
MAP_VAL(i));
}
return result;
}
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