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Remove magic numbers

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Replace magic numbers with constexpr calculated times.

Tested that trying to create a new instance while shutting down doesn't allow a new instance to be created.
This commit is contained in:
EmosewaMC 2022-12-15 20:39:29 -08:00
parent 4775dbf27f
commit 3c581fffbb
3 changed files with 73 additions and 34 deletions
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20
dMasterServer/InstanceManager.cpp
View File

@ -31,6 +31,15 @@ Instance* InstanceManager::GetInstance(LWOMAPID mapID, bool isFriendTransfer, LW
Instance* instance = FindInstance(mapID, isFriendTransfer, cloneID);
if (instance) return instance;
// If we are shutting down, return a nullptr so a new instance is not created.
if (m_IsShuttingDown) {
Game::logger->Log("InstanceManager",
"Tried to create a new instance map/instance/clone %i/%i/%i, but Master is shutting down.",
mapID,
m_LastInstanceID + 1,
cloneID);
return nullptr;
}
//TODO: Update this so that the IP is read from a configuration file instead
int softCap = 8;
@ -238,7 +247,7 @@ void InstanceManager::RedirectPendingRequests(Instance* instance) {
for (const auto& request : instance->GetPendingAffirmations()) {
auto* in = Game::im->GetInstance(zoneId.GetMapID(), false, zoneId.GetCloneID());
if (!in->GetIsReady()) // Instance not ready, make a pending request
if (in && !in->GetIsReady()) // Instance not ready, make a pending request
{
in->GetPendingRequests().push_back(request);
@ -295,6 +304,15 @@ Instance* InstanceManager::CreatePrivateInstance(LWOMAPID mapID, LWOCLONEID clon
return instance;
}
if (m_IsShuttingDown) {
Game::logger->Log("InstanceManager",
"Tried to create a new private instance map/instance/clone %i/%i/%i, but Master is shutting down.",
mapID,
m_LastInstanceID + 1,
cloneID);
return nullptr;
}
int maxPlayers = 999;
uint32_t port = GetFreePort();

6
dMasterServer/InstanceManager.h
View File

@ -128,6 +128,7 @@ public:
Instance* CreatePrivateInstance(LWOMAPID mapID, LWOCLONEID cloneID, const std::string& password);
Instance* FindPrivateInstance(const std::string& password);
void SetIsShuttingDown(bool value) { this->m_IsShuttingDown = value; };
private:
dLogger* mLogger;
@ -136,6 +137,11 @@ private:
unsigned short m_LastPort;
LWOINSTANCEID m_LastInstanceID;
/**
* Whether or not the master server is currently shutting down.
*/
bool m_IsShuttingDown = false;
//Private functions:
bool IsInstanceFull(Instance* instance, bool isFriendTransfer);
int GetSoftCap(LWOMAPID mapID);

75
dMasterServer/MasterServer.cpp
View File

@ -63,6 +63,8 @@ SystemAddress authServerMasterPeerSysAddr;
SystemAddress chatServerMasterPeerSysAddr;
int main(int argc, char** argv) {
constexpr uint32_t masterFramerate = mediumFramerate;
constexpr uint32_t masterFrameDelta = mediumFrameDelta;
Diagnostics::SetProcessName("Master");
Diagnostics::SetProcessFileName(argv[0]);
Diagnostics::Initialize();
@ -287,6 +289,10 @@ int main(int argc, char** argv) {
auto t = std::chrono::high_resolution_clock::now();
Packet* packet = nullptr;
constexpr uint32_t logFlushTime = 15 * masterFramerate;
constexpr uint32_t sqlPingTime = 10 * 60 * masterFramerate;
constexpr uint32_t shutdownUniverseTime = 10 * 60 * masterFramerate;
constexpr uint32_t instanceReadyTimeout = 30 * masterFramerate;
int framesSinceLastFlush = 0;
int framesSinceLastSQLPing = 0;
int framesSinceKillUniverseCommand = 0;
@ -303,14 +309,14 @@ int main(int argc, char** argv) {
}
//Push our log every 15s:
if (framesSinceLastFlush >= 900) {
if (framesSinceLastFlush >= logFlushTime) {
Game::logger->Flush();
framesSinceLastFlush = 0;
} else
framesSinceLastFlush++;
//Every 10 min we ping our sql server to keep it alive hopefully:
if (framesSinceLastSQLPing >= 40000) {
if (framesSinceLastSQLPing >= sqlPingTime) {
//Find out the master's IP for absolutely no reason:
std::string masterIP;
int masterPort;
@ -330,7 +336,7 @@ int main(int argc, char** argv) {
//10m shutdown for universe kill command
if (Game::shouldShutdown) {
if (framesSinceKillUniverseCommand >= 40000) {
if (framesSinceKillUniverseCommand >= shutdownUniverseTime) {
//Break main loop and exit
break;
} else
@ -354,7 +360,7 @@ int main(int argc, char** argv) {
instance->SetAffirmationTimeout(affirmTimeout);
if (affirmTimeout == 1000) {
if (affirmTimeout == instanceReadyTimeout) {
instance->Shutdown();
instance->SetIsShuttingDown(true);
@ -373,7 +379,7 @@ int main(int argc, char** argv) {
}
}
t += std::chrono::milliseconds(highFrameDelta);
t += std::chrono::milliseconds(masterFrameDelta);
std::this_thread::sleep_until(t);
}
return FinalizeShutdown(EXIT_SUCCESS);
@ -424,7 +430,6 @@ void HandlePacket(Packet* packet) {
if (instance) {
LWOZONEID zoneID = instance->GetZoneID(); //Get the zoneID so we can recreate a server
Game::im->RemoveInstance(instance); //Delete the old
//Game::im->GetInstance(zoneID.GetMapID(), false, 0); //Create the new
}
if (packet->systemAddress == chatServerMasterPeerSysAddr) {
@ -465,14 +470,17 @@ void HandlePacket(Packet* packet) {
inStream.Read(mythranShift);
inStream.Read(zoneID);
inStream.Read(zoneClone);
if (shutdownSequenceStarted) {
Game::logger->Log("MasterServer", "Shutdown sequence has been started. Not creating a new zone.");
break;
}
Instance* in = Game::im->GetInstance(zoneID, false, zoneClone);
for (auto* instance : Game::im->GetInstances()) {
Game::logger->Log("MasterServer", "Instance: %i/%i/%i -> %i", instance->GetMapID(), instance->GetCloneID(), instance->GetInstanceID(), instance == in);
}
if (!in->GetIsReady()) //Instance not ready, make a pending request
if (in && !in->GetIsReady()) //Instance not ready, make a pending request
{
in->GetPendingRequests().push_back({ requestID, static_cast<bool>(mythranShift), packet->systemAddress });
Game::logger->Log("MasterServer", "Server not ready, adding pending request %llu %i %i", requestID, zoneID, zoneClone);
@ -720,9 +728,13 @@ void HandlePacket(Packet* packet) {
int zoneID;
inStream.Read(zoneID);
if (shutdownSequenceStarted) {
Game::logger->Log("MasterServer", "Shutdown sequence has been started. Not prepping a new zone.");
break;
} else {
Game::logger->Log("MasterServer", "Prepping zone %i", zoneID);
Game::im->GetInstance(zoneID, false, 0);
}
break;
}
@ -771,7 +783,7 @@ void HandlePacket(Packet* packet) {
Game::logger->Log("MasterServer", "Unknown master packet ID from server: %i", packet->data[3]);
}
}
}
}
void StartChatServer() {
if (Game::shouldShutdown) {
@ -788,9 +800,9 @@ void StartChatServer() {
auto result = system(("sudo " + (BinaryPathFinder::GetBinaryDir() / "ChatServer").string() + "&").c_str());
} else {
auto result = system(((BinaryPathFinder::GetBinaryDir() / "ChatServer").string() + "&").c_str());
}
}
#endif
}
}
void StartAuthServer() {
if (Game::shouldShutdown) {
@ -806,7 +818,7 @@ void StartAuthServer() {
auto result = system(("sudo " + (BinaryPathFinder::GetBinaryDir() / "AuthServer").string() + "&").c_str());
} else {
auto result = system(((BinaryPathFinder::GetBinaryDir() / "AuthServer").string() + "&").c_str());
}
}
#endif
}
@ -815,6 +827,11 @@ void ShutdownSequence(int signal) {
return;
}
if (!Game::im) {
FinalizeShutdown(EXIT_FAILURE);
}
Game::im->SetIsShuttingDown(true);
shutdownSequenceStarted = true;
Game::shouldShutdown = true;
@ -826,40 +843,38 @@ void ShutdownSequence(int signal) {
}
auto* objIdManager = ObjectIDManager::TryInstance();
if (objIdManager != nullptr) {
if (objIdManager) {
objIdManager->SaveToDatabase();
Game::logger->Log("MasterServer", "Saved ObjectIDTracker to DB");
}
auto t = std::chrono::high_resolution_clock::now();
auto ticks = 0;
if (!Game::im) {
FinalizeShutdown(EXIT_FAILURE);
}
// A server might not be finished spinning up yet, remove all of those here.
for (auto instance : Game::im->GetInstances()) {
for (auto* instance : Game::im->GetInstances()) {
if (!instance->GetIsReady()) {
Game::im->RemoveInstance(instance);
}
}
for (auto instance : Game::im->GetInstances()) {
for (auto* instance : Game::im->GetInstances()) {
instance->SetIsShuttingDown(true);
}
Game::logger->Log("MasterServer", "Attempting to shutdown instances, max 60 seconds...");
auto t = std::chrono::high_resolution_clock::now();
uint32_t framesSinceShutdownStart = 0;
constexpr uint32_t maxShutdownTime = 60 * mediumFramerate;
bool allInstancesShutdown = false;
Packet* packet = nullptr;
while (true) {
auto packet = Game::server->Receive();
packet = Game::server->Receive();
if (packet) {
HandlePacket(packet);
Game::server->DeallocatePacket(packet);
packet = nullptr;
}
auto done = true;
allInstancesShutdown = true;
for (auto* instance : Game::im->GetInstances()) {
if (instance == nullptr) {
@ -867,21 +882,21 @@ void ShutdownSequence(int signal) {
}
if (!instance->GetShutdownComplete()) {
done = false;
allInstancesShutdown = false;
}
}
if (done && authServerMasterPeerSysAddr == UNASSIGNED_SYSTEM_ADDRESS && chatServerMasterPeerSysAddr == UNASSIGNED_SYSTEM_ADDRESS) {
if (allInstancesShutdown && authServerMasterPeerSysAddr == UNASSIGNED_SYSTEM_ADDRESS && chatServerMasterPeerSysAddr == UNASSIGNED_SYSTEM_ADDRESS) {
Game::logger->Log("MasterServer", "Finished shutting down MasterServer!");
break;
}
t += std::chrono::milliseconds(highFrameDelta);
t += std::chrono::milliseconds(mediumFrameDelta);
std::this_thread::sleep_until(t);
ticks++;
framesSinceShutdownStart++;
if (ticks == 600 * 6) {
if (framesSinceShutdownStart == maxShutdownTime) {
Game::logger->Log("MasterServer", "Finished shutting down by timeout!");
break;
}