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361 lines (334 loc) · 12.5 KB
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#include "scripting/PythonScripting.hpp"
namespace fs = std::filesystem;
PythonScripting& PythonScripting::GetInstance() {
static PythonScripting instance;
return instance;
}
PythonScripting::PythonScripting()
: initialized_(false) {
}
PythonScripting::~PythonScripting() {
Shutdown();
}
std::string PythonScripting::GetCurrentDirectory() {
return std::filesystem::current_path().string();
}
bool PythonScripting::CheckStatus(PyStatus status)
{
if (PyStatus_IsError(status))
{
Logger::Error("status.exitcode = {} ({})", status.exitcode, status.err_msg ? status.err_msg : "unknown error");
return false;
}
else if (PyStatus_Exception(status))
{
Logger::Critical("status.exitcode = {} ({})", status.exitcode, status.err_msg ? status.err_msg : "unknown error");
//Py_ExitStatusException(status);
return false;
}
else if (PyStatus_IsExit(status))
{
Logger::Error("status.exitcode = {} ({})", status.exitcode, status.err_msg ? status.err_msg : "unknown error");
return false;
}
return true;
}
void PythonScripting::CheckStatusConf(PyStatus status, PyConfig pyconf)
{
if (!CheckStatus(status)) {
PyConfig_Clear(&pyconf);
initialized_ = false;
}
}
bool PythonScripting::Initialize() {
std::string curdir = GetCurrentDirectory();
auto& config = ConfigManager::GetInstance();
std::string home = config.GetString("scripting.python.home", "scripts/python", true);
std::string platlibdir = config.GetString("scripting.python.platlibdir", "lib", true);
std::string module_search_paths = config.GetString("scripting.python.module_search_paths", "/usr/lib/python;/usr/local/lib/python");
WArray module_search_paths_array(module_search_paths, ";", curdir+"/");
PyStatus status;
PyConfig pyconf;
pyconf.isolated = config.GetInt("scripting.python.isolated", 1, true);
if (pyconf.isolated == 1) {
PyConfig_InitIsolatedConfig(&pyconf);
}
else
{
PyConfig_InitPythonConfig(&pyconf);
}
pyconf.site_import = config.GetInt("scripting.python.site_import", 1);
pyconf.user_site_directory = config.GetInt("scripting.python.user_site_directory", 1);
initialized_ = true;//set before first CheckStatusConf call
status = PyConfig_SetBytesString(&pyconf, &pyconf.program_name, config.GetString("scripting.python.program_name", "gameserver").c_str());
CheckStatusConf(status, pyconf);
if (!home.empty()) {
status = PyConfig_SetBytesString(&pyconf, &pyconf.home, (curdir+"/"+home).c_str());
CheckStatusConf(status, pyconf);
}
if (!module_search_paths.empty()) {
pyconf.module_search_paths_set = 1;
for (size_t i = 0; i < module_search_paths_array.size(); ++i) {
wchar_t** paths = module_search_paths_array.get();
//Logger::Trace("PYTHON.MODULE_SEARCH_PATHS: {} ({})", i, wstring_to_string(std::wstring(paths[i])));
status = PyWideStringList_Append(&pyconf.module_search_paths, paths[i]);
if (!CheckStatus(status)) {
PyConfig_Clear(&pyconf);
initialized_ = false;
break;
}
}
}
status = PyConfig_SetBytesString(&pyconf, &pyconf.platlibdir, (curdir+"/"+home+"/"+platlibdir).c_str());
CheckStatusConf(status, pyconf);
status = PyConfig_SetBytesString(&pyconf, &pyconf.prefix, curdir.c_str());
CheckStatusConf(status, pyconf);
status = Py_InitializeFromConfig(&pyconf);
CheckStatusConf(status, pyconf);
if (!initialized_)
{
ShutdownPython();
}
else
Logger::Info("Python interpreter ready (version: {})", Py_GetVersion());
return initialized_;
}
bool PythonScripting::IsInitialized() const { return initialized_; }
void PythonScripting::Shutdown() {
if (!initialized_) {
return;
}
Logger::Info("Shutting down Python scripting engine...");
{
std::unique_lock<std::shared_mutex> lock(modulesMutex_);
modules_.clear();
}
{
std::unique_lock<std::shared_mutex> lock(eventHandlersMutex_);
eventHandlers_.clear();
}
{
std::unique_lock<std::shared_mutex> lock(callbacksMutex_);
callbacks_.clear();
}
ShutdownPython();
initialized_ = false;
Logger::Info("Python scripting engine shutdown complete");
}
void PythonScripting::ShutdownPython() {
try {
Py_FinalizeEx();
Logger::Debug("Python interpreter finalized");
} catch (const std::exception& err) {
Logger::Error("Exception finalizing Python: {}", err.what());
}
}
bool PythonScripting::LoadModule(const std::string& name, const std::string& path) {
if (!initialized_) {
Logger::Error("Python not initialized");
return false;
}
{
std::unique_lock<std::shared_mutex> lock(modulesMutex_);
if (modules_.find(name) != modules_.end()) {
Logger::Warn("Module already loaded: {}", name);
return true;
}
auto module = std::make_unique<PythonModule>(name, path);
if (!module->Load()) {
Logger::Error("Failed to load Python module {}: {}", name, module->GetLastError());
return false;
}
modules_[name] = std::move(module);
}
Logger::Info("Python module loaded: {}", name);
return true;
}
bool PythonScripting::UnloadModule(const std::string& name) {
std::unique_lock<std::shared_mutex> lock(modulesMutex_);
auto it = modules_.find(name);
if (it == modules_.end()) {
Logger::Warn("Module not found: {}", name);
return false;
}
{
std::unique_lock<std::shared_mutex> eventLock(eventHandlersMutex_);
for (auto& [eventName, handlers] : eventHandlers_) {
handlers.erase(
std::remove_if(handlers.begin(), handlers.end(),
[&name](const auto& handler) {
return handler.first == name;
}),
handlers.end()
);
}
}
it->second->Unload();
modules_.erase(it);
Logger::Info("Python module unloaded: {}", name);
return true;
}
bool PythonScripting::ReloadModule(const std::string& name) {
std::unique_lock<std::shared_mutex> lock(modulesMutex_);
auto it = modules_.find(name);
if (it == modules_.end()) {
Logger::Warn("Module not found: {}", name);
return false;
}
if (!it->second->Reload()) {
Logger::Error("Failed to reload Python module {}: {}", name, it->second->GetLastError());
return false;
}
Logger::Info("Python module reloaded: {}", name);
return true;
}
void PythonScripting::RegisterEventHandler(const std::string& eventName,
const std::string& moduleName,
const std::string& functionName) {
std::unique_lock<std::shared_mutex> lock(eventHandlersMutex_);
{
std::shared_lock<std::shared_mutex> modulesLock(modulesMutex_);
auto it = modules_.find(moduleName);
if (it == modules_.end()) {
Logger::Error("PythonScripting::RegisterEventHandler: module not found: {}", moduleName);
return;
}
if (!it->second->HasFunction(functionName)) {
Logger::Error("PythonScripting::RegisterEventHandler: function not found: {}.{}",
moduleName, functionName);
return;
}
}
eventHandlers_[eventName].emplace_back(moduleName, functionName);
Logger::Trace("PythonScripting::RegisterEventHandler: {} -> {}.{}",
eventName, moduleName, functionName);
}
void PythonScripting::UnregisterEventHandler(const std::string& eventName,
const std::string& moduleName) {
std::unique_lock<std::shared_mutex> lock(eventHandlersMutex_);
auto it = eventHandlers_.find(eventName);
if (it == eventHandlers_.end()) {
return;
}
auto& handlers = it->second;
handlers.erase(
std::remove_if(handlers.begin(), handlers.end(),
[&moduleName](const auto& handler) {
return handler.first == moduleName;
}),
handlers.end()
);
if (handlers.empty()) {
eventHandlers_.erase(it);
}
Logger::Debug("Unregistered event handlers for {} from module {}",
eventName, moduleName);
}
bool PythonScripting::FireEvent(const GameEvent& event) {
return FireEvent(event.name, event.ToJson());
}
bool PythonScripting::FireEvent(const std::string& eventName, const nlohmann::json& data) {
if (!initialized_) {
return false;
}
std::vector<std::pair<std::string, std::string>> handlers;
{
std::shared_lock<std::shared_mutex> lock(eventHandlersMutex_);
auto it = eventHandlers_.find(eventName);
if (it == eventHandlers_.end()) {
return false;
}
handlers = it->second;
}
if (handlers.empty()) {
return false;
}
bool anySuccess = false;
for (const auto& [moduleName, functionName] : handlers) {
std::shared_lock<std::shared_mutex> modulesLock(modulesMutex_);
auto moduleIt = modules_.find(moduleName);
if (moduleIt == modules_.end()) {
Logger::Warn("Module not found for event handler: {}", moduleName);
continue;
}
nlohmann::json eventData = {
{"event", eventName},
{"data", data},
{"timestamp", std::chrono::duration_cast<std::chrono::milliseconds>(
std::chrono::system_clock::now().time_since_epoch()).count()}
};
if (moduleIt->second->CallFunction(functionName, eventData)) {
anySuccess = true;
} else {
Logger::Warn("Event handler failed: {}.{} for event {}",
moduleName, functionName, eventName);
}
}
return anySuccess;
}
bool PythonScripting::CallFunction(const std::string& moduleName,
const std::string& functionName,
const nlohmann::json& args) {
if (!initialized_) {
return false;
}
std::shared_lock<std::shared_mutex> lock(modulesMutex_);
auto it = modules_.find(moduleName);
if (it == modules_.end()) {
Logger::Error("Module not found: {}", moduleName);
return false;
}
return it->second->CallFunction(functionName, args);
}
nlohmann::json PythonScripting::CallFunctionWithResult(const std::string& moduleName,
const std::string& functionName,
const nlohmann::json& args) {
if (!initialized_) {
return nlohmann::json();
}
std::shared_lock<std::shared_mutex> lock(modulesMutex_);
auto it = modules_.find(moduleName);
if (it == modules_.end()) {
Logger::Error("Module not found: {}", moduleName);
return nlohmann::json();
}
return it->second->CallFunctionWithResult(functionName, args);
}
void PythonScripting::RegisterCallback(const std::string& callbackName, PyCallback callback) {
std::unique_lock<std::shared_mutex> lock(callbacksMutex_);
callbacks_[callbackName] = std::move(callback);
Logger::Debug("Registered Python callback: {}", callbackName);
}
void PythonScripting::UnregisterCallback(const std::string& callbackName) {
std::unique_lock<std::shared_mutex> lock(callbacksMutex_);
callbacks_.erase(callbackName);
Logger::Debug("Unregistered Python callback: {}", callbackName);
}
bool PythonScripting::HasCallback(const std::string& callbackName) const {
std::shared_lock<std::shared_mutex> lock(callbacksMutex_);
return callbacks_.find(callbackName) != callbacks_.end();
}
std::vector<std::string> PythonScripting::GetLoadedModules() const {
std::vector<std::string> result;
std::shared_lock<std::shared_mutex> lock(modulesMutex_);
for (const auto& [name, module] : modules_) {
result.push_back(name);
}
return result;
}
std::vector<std::string> PythonScripting::GetRegisteredEvents() const {
std::vector<std::string> result;
std::shared_lock<std::shared_mutex> lock(eventHandlersMutex_);
for (const auto& [eventName, handlers] : eventHandlers_) {
result.push_back(eventName);
}
return result;
}
std::vector<std::string> PythonScripting::GetRegisteredCallbacks() const {
std::vector<std::string> result;
std::shared_lock<std::shared_mutex> lock(callbacksMutex_);
for (const auto& [callbackName, callback] : callbacks_) {
result.push_back(callbackName);
}
return result;
}
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