libtransport.git Changeset - cc954f60d118

Changeset - cc954f60d118

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Jan Kaluza - 14 years ago 2011-06-21 08:18:40
hanzz.k@gmail.com

Check if backend can be executed and write error message if not

1 file changed with 21 insertions and 10 deletions:

src/networkpluginserver.cpp

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src/networkpluginserver.cpp

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@@ @@ -68,135 +68,146 @@ class NetworkFactory : public Factory { @@
 			nc->onMessageToSend.connect(boost::bind(&NetworkPluginServer::handleMessageReceived, m_nps, _1, _2));
 			return nc;
+		}
 		Buddy *createBuddy(RosterManager *rosterManager, const BuddyInfo &buddyInfo) {
 			LocalBuddy *buddy = new LocalBuddy(rosterManager, buddyInfo.id);
 			buddy->setAlias(buddyInfo.alias);
 			buddy->setName(buddyInfo.legacyName);
 			buddy->setSubscription(buddyInfo.subscription);
 			buddy->setGroups(buddyInfo.groups);
 			buddy->setFlags((BuddyFlag) buddyInfo.flags);
 			if (buddyInfo.settings.find("icon_hash") != buddyInfo.settings.end())
 				buddy->setIconHash(buddyInfo.settings.find("icon_hash")->second.s);
 			return buddy;
+		}
 	private:
 		NetworkPluginServer *m_nps;
 };
 #define WRAP(MESSAGE, TYPE) 	pbnetwork::WrapperMessage wrap; \
 	wrap.set_type(TYPE); \
 	wrap.set_payload(MESSAGE); \
 	wrap.SerializeToString(&MESSAGE);
-static int exec_(const char *path, const char *host, const char *port, const char *config) {
+static pid_t exec_(const char *path, const char *host, const char *port, const char *config) {
 	LOG4CXX_INFO(logger, "Starting new backend " << path);
 // 	char *argv[] = {(char*)script_name, '\0'};
 	int status = 0;
 	pid_t pid = fork();
 	if ( pid == 0 ) {
 		// child process
 		execlp(path, path, "--host", host, "--port", port, config, NULL);
 		abort();
 		exit(execlp(path, path, "--host", host, "--port", port, config, NULL));
 	} else if ( pid < 0 ) {
 		// fork failed
 		status = -1;
+	}
 	return status;
 	return pid;
+}
 static void SigCatcher(int n) {
 	wait3(NULL,WNOHANG,NULL);
 	pid_t result;
 	int status;
 	while ((result = waitpid(0, &status, WNOHANG)) > 0) {
 		if (result != 0) {
 			if (WIFEXITED(status)) {
 				if (WEXITSTATUS(status) != 0) {
 					LOG4CXX_ERROR(logger, "Backend can not be started, exit_code=" << WEXITSTATUS(status));
+				}
+			}
 			else {
 				LOG4CXX_ERROR(logger, "Backend can not be started");
+			}
+		}
+	}
+}
 static void handleBuddyPayload(LocalBuddy *buddy, const pbnetwork::Buddy &payload) {
 	buddy->setName(payload.buddyname());
 	buddy->setAlias(payload.alias());
 	std::vector<std::string> groups;
 	groups.push_back(payload.groups());
 	buddy->setGroups(groups);
 	buddy->setStatus(Swift::StatusShow((Swift::StatusShow::Type) payload.status()), payload.statusmessage());
 	buddy->setIconHash(payload.iconhash());
+}
 NetworkPluginServer::NetworkPluginServer(Component *component, Config *config, UserManager *userManager) {
 	m_userManager = userManager;
 	m_config = config;
 	m_component = component;
 	m_component->m_factory = new NetworkFactory(this);
 	m_userManager->onUserCreated.connect(boost::bind(&NetworkPluginServer::handleUserCreated, this, _1));
 	m_userManager->onUserDestroyed.connect(boost::bind(&NetworkPluginServer::handleUserDestroyed, this, _1));
 	m_pingTimer = component->getNetworkFactories()->getTimerFactory()->createTimer(10000);
 	m_pingTimer->onTick.connect(boost::bind(&NetworkPluginServer::pingTimeout, this));
 	m_pingTimer->onTick.connect(boost::bind(&NetworkPluginServer::pingTimeout, this));
 	m_pingTimer->start();
 	m_vcardResponder = new VCardResponder(component->getIQRouter(), userManager);
 	m_vcardResponder->onVCardRequired.connect(boost::bind(&NetworkPluginServer::handleVCardRequired, this, _1, _2, _3));
 	m_vcardResponder->onVCardUpdated.connect(boost::bind(&NetworkPluginServer::handleVCardUpdated, this, _1, _2));
 	m_vcardResponder->start();
 	m_rosterResponder = new RosterResponder(component->getIQRouter(), userManager);
 	m_rosterResponder->onBuddyAdded.connect(boost::bind(&NetworkPluginServer::handleBuddyAdded, this, _1, _2));
 	m_rosterResponder->onBuddyRemoved.connect(boost::bind(&NetworkPluginServer::handleBuddyRemoved, this, _1));
 	m_rosterResponder->onBuddyUpdated.connect(boost::bind(&NetworkPluginServer::handleBuddyUpdated, this, _1, _2));
 	m_rosterResponder->start();
 	m_server = Swift::BoostConnectionServer::create(Swift::HostAddress(CONFIG_STRING(m_config, "service.backend_host")), boost::lexical_cast<int>(CONFIG_STRING(m_config, "service.backend_port")), component->getNetworkFactories()->getIOServiceThread()->getIOService(), component->m_loop);
 	m_server->onNewConnection.connect(boost::bind(&NetworkPluginServer::handleNewClientConnection, this, _1));
 	m_server->start();
 	LOG4CXX_INFO(logger, "Listening on host " << CONFIG_STRING(m_config, "service.backend_host") << " port " << CONFIG_STRING(m_config, "service.backend_port"));
 	signal(SIGCHLD, SigCatcher);
 	exec_(CONFIG_STRING(m_config, "service.backend").c_str(), CONFIG_STRING(m_config, "service.backend_host").c_str(), CONFIG_STRING(m_config, "service.backend_port").c_str(), m_config->getConfigFile().c_str());
+}
 NetworkPluginServer::~NetworkPluginServer() {
 	m_pingTimer->stop();
 	delete m_vcardResponder;
 	delete m_rosterResponder;
+}
 void NetworkPluginServer::handleNewClientConnection(boost::shared_ptr<Swift::Connection> c) {
 	Client *client = new Client;
 	client->pongReceived = true;
 	client->connection = c;
 	LOG4CXX_INFO(logger, "New backend " << client << " connected. Current backend count=" << (m_clients.size() + 1));
 	if (m_clients.size() == 0) {
 		// first backend connected, start the server, we're ready.
 		m_component->start();
+	}
 	m_clients.push_back(client);
 	c->onDisconnected.connect(boost::bind(&NetworkPluginServer::handleSessionFinished, this, client));
 	c->onDataRead.connect(boost::bind(&NetworkPluginServer::handleDataRead, this, client, _1));
 	sendPing(client);
 	m_pingTimer->start();
+}
 void NetworkPluginServer::handleSessionFinished(Client *c) {
 	LOG4CXX_INFO(logger, "Backend " << c << " disconnected. Current backend count=" << (m_clients.size() - 1));
 	for (std::list<User *>::const_iterator it = c->users.begin(); it != c->users.end(); it++) {
 		LOG4CXX_ERROR(logger, "Backend " << c << " disconnected (probably crashed) with active user " << (*it)->getJID().toString());
 		(*it)->setData(NULL);
 		(*it)->handleDisconnected("Internal Server Error, please reconnect.");
+	}
 	m_clients.remove(c);
 	delete c;
 	// Execute new session only if there's no free one after this crash/disconnection
 	for (std::list<Client *>::const_iterator it = m_clients.begin(); it != m_clients.end(); it++) {
 		if ((*it)->users.size() < CONFIG_INT(m_config, "service.users_per_backend")) {
 			return;
+		}
+	}
 	exec_(CONFIG_STRING(m_config, "service.backend").c_str(), CONFIG_STRING(m_config, "service.backend_host").c_str(), CONFIG_STRING(m_config, "service.backend_port").c_str(), m_config->getConfigFile().c_str());
+}
 void NetworkPluginServer::handleConnectedPayload(const std::string &data) {
 	pbnetwork::Connected payload;
 				handleChatStatePayload(wrapper.payload(), Swift::ChatState::Composing);
 				break;
 			case pbnetwork::WrapperMessage_Type_TYPE_BUDDY_TYPED:
 				handleChatStatePayload(wrapper.payload(), Swift::ChatState::Paused);
 				break;
 			case pbnetwork::WrapperMessage_Type_TYPE_BUDDY_STOPPED_TYPING:
 				handleChatStatePayload(wrapper.payload(), Swift::ChatState::Active);
 				break;
 			case pbnetwork::WrapperMessage_Type_TYPE_AUTH_REQUEST:
 				handleAuthorizationPayload(wrapper.payload());
 				break;
 			default:
 				return;
+		}
+	}
+}
 void NetworkPluginServer::send(boost::shared_ptr<Swift::Connection> &c, const std::string &data) {
 	char header[4];
 	*((int*)(header)) = htonl(data.size());
 	c->write(Swift::createSafeByteArray(std::string(header, 4) + data));
+}
 void NetworkPluginServer::pingTimeout() {
 	// check ping responses
 	for (std::list<Client *>::const_iterator it = m_clients.begin(); it != m_clients.end(); it++) {
 		if ((*it)->pongReceived) {
 			sendPing((*it));
 			m_pingTimer->start();
+		}
 		else {
 			exec_(CONFIG_STRING(m_config, "service.backend").c_str(), CONFIG_STRING(m_config, "service.backend_host").c_str(), CONFIG_STRING(m_config, "service.backend_port").c_str(), m_config->getConfigFile().c_str());
+		}
+	}
+}
 void NetworkPluginServer::handleUserCreated(User *user) {
 	Client *c = getFreeClient();
 	if (!c) {
 		LOG4CXX_ERROR(logger, "There is no backend to handle user " << user->getJID().toString());
 		user->handleDisconnected("Internal Server Error, please reconnect.");
 		return;
+	}
 	user->setData(c);
 	c->users.push_back(user);
 // 	UserInfo userInfo = user->getUserInfo();
 	user->onReadyToConnect.connect(boost::bind(&NetworkPluginServer::handleUserReadyToConnect, this, user));
 	user->onPresenceChanged.connect(boost::bind(&NetworkPluginServer::handleUserPresenceChanged, this, user, _1));
 	user->onRoomJoined.connect(boost::bind(&NetworkPluginServer::handleRoomJoined, this, user, _1, _2, _3));
 	user->onRoomLeft.connect(boost::bind(&NetworkPluginServer::handleRoomLeft, this, user, _1));
+}

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