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Copy pathPythonEvent.cpp
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363 lines (288 loc) · 10 KB
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#include <chrono>
#include <thread>
#include <queue>
#include <algorithm>
#include "scripting/PythonEvent.hpp"
// =============== PythonEventHandler Implementation ===============
PythonEventHandler::PythonEventHandler(const std::string& name,
const std::string& moduleName,
const std::string& functionName,
int priority)
: name_(name), moduleName_(moduleName), functionName_(functionName), priority_(priority) {
}
bool PythonEventHandler::HandleEvent(const nlohmann::json& eventData) {
// This would call Python via the scripting engine
// For now, it's a stub
auto& scripting = PythonScripting::GetInstance();
return scripting.CallFunction(moduleName_, functionName_, eventData);
}
bool PythonEventHandler::IsValid() const {
auto& scripting = PythonScripting::GetInstance();
std::vector<std::string> modules = scripting.GetLoadedModules();
return std::find(modules.begin(), modules.end(), moduleName_) != modules.end();
}
// =============== EventDispatcher Implementation ===============
EventDispatcher& EventDispatcher::GetInstance() {
static EventDispatcher instance;
return instance;
}
void EventDispatcher::RegisterHandler(const std::string& eventName,
std::shared_ptr<IEventHandler> handler) {
std::unique_lock<std::shared_mutex> lock(handlersMutex_);
// Insert handler in priority order
auto& handlers = handlers_[eventName];
auto it = std::lower_bound(handlers.begin(), handlers.end(), handler,
[](const std::shared_ptr<IEventHandler>& a,
const std::shared_ptr<IEventHandler>& b) {
return a->GetPriority() > b->GetPriority();
});
handlers.insert(it, handler);
}
void EventDispatcher::UnregisterHandler(const std::string& eventName,
const std::string& handlerName) {
std::unique_lock<std::shared_mutex> lock(handlersMutex_);
auto it = handlers_.find(eventName);
if (it != handlers_.end()) {
auto& handlers = it->second;
handlers.erase(
std::remove_if(handlers.begin(), handlers.end(),
[&handlerName](const std::shared_ptr<IEventHandler>& handler) {
return handler->GetName() == handlerName;
}),
handlers.end()
);
if (handlers.empty()) {
handlers_.erase(it);
}
}
}
bool EventDispatcher::DispatchEvent(const std::string& eventName,
const nlohmann::json& eventData) {
std::shared_lock<std::shared_mutex> lock(handlersMutex_);
auto it = handlers_.find(eventName);
if (it == handlers_.end()) {
return false;
}
bool anySuccess = false;
for (const auto& handler : it->second) {
if (handler->HandleEvent(eventData)) {
anySuccess = true;
}
}
return anySuccess;
}
std::vector<std::string> EventDispatcher::GetRegisteredEvents() const {
std::shared_lock<std::shared_mutex> lock(handlersMutex_);
std::vector<std::string> events;
for (const auto& [eventName, handlers] : handlers_) {
events.push_back(eventName);
}
return events;
}
std::vector<std::string> EventDispatcher::GetHandlersForEvent(const std::string& eventName) const {
std::shared_lock<std::shared_mutex> lock(handlersMutex_);
auto it = handlers_.find(eventName);
if (it == handlers_.end()) {
return {};
}
std::vector<std::string> handlerNames;
for (const auto& handler : it->second) {
handlerNames.push_back(handler->GetName());
}
return handlerNames;
}
// =============== EventQueue Implementation ===============
EventQueue::EventQueue(size_t maxSize)
: maxSize_(maxSize), running_(false) {
}
EventQueue::~EventQueue() {
StopProcessing();
}
bool EventQueue::PushEvent(const std::string& eventName,
const nlohmann::json& eventData,
int priority) {
std::lock_guard<std::mutex> lock(queueMutex_);
if (queue_.size() >= maxSize_) {
return false;
}
QueuedEvent event{
eventName,
eventData,
std::chrono::duration_cast<std::chrono::milliseconds>(
std::chrono::system_clock::now().time_since_epoch()).count(),
priority
};
queue_.push(std::move(event));
queueCV_.notify_one();
return true;
}
bool EventQueue::PopEvent(QueuedEvent& event) {
std::lock_guard<std::mutex> lock(queueMutex_);
if (queue_.empty()) {
return false;
}
event = queue_.top();
queue_.pop();
return true;
}
size_t EventQueue::Size() const {
std::lock_guard<std::mutex> lock(queueMutex_);
return queue_.size();
}
size_t EventQueue::Capacity() const {
return maxSize_;
}
void EventQueue::Clear() {
std::lock_guard<std::mutex> lock(queueMutex_);
while (!queue_.empty()) {
queue_.pop();
}
}
void EventQueue::StartProcessing() {
if (running_) {
return;
}
running_ = true;
processThread_ = std::thread(&EventQueue::ProcessLoop, this);
}
void EventQueue::StopProcessing() {
if (!running_) {
return;
}
running_ = false;
queueCV_.notify_all();
if (processThread_.joinable()) {
processThread_.join();
}
}
void EventQueue::ProcessLoop() {
while (running_) {
QueuedEvent event;
{
std::unique_lock<std::mutex> lock(queueMutex_);
if (queue_.empty()) {
queueCV_.wait(lock, [this]() {
return !queue_.empty() || !running_;
});
}
if (!running_) {
break;
}
if (queue_.empty()) {
continue;
}
event = queue_.top();
queue_.pop();
}
// Dispatch the event
auto& dispatcher = EventDispatcher::GetInstance();
dispatcher.DispatchEvent(event.name, event.data);
}
}
// =============== ScheduledEvent Implementation ===============
ScheduledEvent::ScheduledEvent(const std::string& eventName,
const nlohmann::json& eventData,
int64_t executeAt,
bool repeat,
int64_t interval)
: eventName_(eventName),
eventData_(eventData),
executeAt_(executeAt),
repeat_(repeat),
interval_(interval) {
}
bool ScheduledEvent::ShouldExecute() const {
auto now = std::chrono::duration_cast<std::chrono::milliseconds>(
std::chrono::system_clock::now().time_since_epoch()).count();
return now >= executeAt_;
}
bool ScheduledEvent::Execute() {
auto& dispatcher = EventDispatcher::GetInstance();
return dispatcher.DispatchEvent(eventName_, eventData_);
}
void ScheduledEvent::Reschedule() {
if (repeat_) {
executeAt_ += interval_;
}
}
// =============== EventScheduler Implementation ===============
EventScheduler& EventScheduler::GetInstance() {
static EventScheduler instance;
return instance;
}
EventScheduler::EventScheduler() : running_(false) {
StartProcessing();
}
EventScheduler::~EventScheduler() {
StopProcessing();
}
void EventScheduler::ScheduleEvent(const std::string& eventName,
const nlohmann::json& eventData,
int64_t delayMs,
bool repeat,
int64_t intervalMs) {
int64_t executeAt = std::chrono::duration_cast<std::chrono::milliseconds>(
std::chrono::system_clock::now().time_since_epoch()).count() + delayMs;
std::lock_guard<std::mutex> lock(scheduledEventsMutex_);
scheduledEvents_.push_back(
std::make_unique<ScheduledEvent>(eventName, eventData, executeAt, repeat, intervalMs)
);
}
void EventScheduler::CancelEvent(const std::string& eventName) {
std::lock_guard<std::mutex> lock(scheduledEventsMutex_);
scheduledEvents_.erase(
std::remove_if(scheduledEvents_.begin(), scheduledEvents_.end(),
[&eventName](const std::unique_ptr<ScheduledEvent>& event) {
return event->GetName() == eventName;
}),
scheduledEvents_.end()
);
}
void EventScheduler::Update() {
ProcessScheduledEvents();
}
void EventScheduler::StartProcessing() {
if (running_) {
return;
}
running_ = true;
schedulerThread_ = std::thread(&EventScheduler::ProcessScheduledEvents, this);
}
void EventScheduler::StopProcessing() {
if (!running_) {
return;
}
running_ = false;
if (schedulerThread_.joinable()) {
schedulerThread_.join();
}
}
void EventScheduler::ProcessScheduledEvents() {
while (running_) {
{
std::lock_guard<std::mutex> lock(scheduledEventsMutex_);
auto now = std::chrono::duration_cast<std::chrono::milliseconds>(
std::chrono::system_clock::now().time_since_epoch()).count();
for (auto& event : scheduledEvents_) {
if (event->ShouldExecute()) {
event->Execute();
if (event->repeat_) {
event->Reschedule();
} else {
// Mark for removal
event.reset();
}
}
}
// Remove executed non-repeating events
scheduledEvents_.erase(
std::remove_if(scheduledEvents_.begin(), scheduledEvents_.end(),
[](const std::unique_ptr<ScheduledEvent>& event) {
return !event;
}),
scheduledEvents_.end()
);
}
std::this_thread::sleep_for(std::chrono::milliseconds(100));
}
}
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