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編寫高可用的C++鉤子(hook)以支持大規(guī)模系統(tǒng)是一個復(fù)雜的任務(wù),需要考慮多個方面,包括性能、可靠性、可擴(kuò)展性和安全性。以下是一個基本的框架,展示了如何設(shè)計(jì)一個高可用的C++鉤子系統(tǒng)。
#include <iostream>
#include <vector>
#include <memory>
#include <queue>
#include <mutex>
#include <condition_variable>
class HookManager {
public:
using HookFunction = std::function<void()>;
void registerHook(const std::string& name, HookFunction hook) {
std::lock_guard<std::mutex> lock(mutex_);
hooks_[name] = hook;
}
void unregisterHook(const std::string& name) {
std::lock_guard<std::mutex> lock(mutex_);
hooks_.erase(name);
}
void triggerHook(const std::string& name) {
std::lock_guard<std::mutex> lock(mutex_);
if (hooks_.find(name) != hooks_.end()) {
hooks_[name]();
}
}
private:
std::unordered_map<std::string, HookFunction> hooks_;
std::mutex mutex_;
};
#include <thread>
#include <future>
class HookExecutor {
public:
void start() {
worker_ = std::thread([this] {
while (true) {
std::function<void()> hook;
{
std::unique_lock<std::mutex> lock(queueMutex_);
condition_.wait(lock, [this] { return !hooksQueue_.empty(); });
hook = std::move(hooksQueue_.front());
hooksQueue_.pop();
}
hook();
}
});
}
void stop() {
{
std::lock_guard<std::mutex> lock(queueMutex_);
running_ = false;
}
condition_.notify_one();
if (worker_.joinable()) {
worker_.join();
}
}
void addHook(std::function<void()> hook) {
{
std::lock_guard<std::mutex> lock(queueMutex_);
if (!running_) {
throw std::runtime_error("Executor is stopped");
}
hooksQueue_.push(hook);
}
condition_.notify_one();
}
private:
std::thread worker_;
std::queue<std::function<void()>> hooksQueue_;
std::mutex queueMutex_;
std::condition_variable condition_;
bool running_ = true;
};
#include <iostream>
#include <chrono>
void exampleHook() {
std::cout << "Hook triggered!" << std::endl;
}
int main() {
HookManager hookManager;
HookExecutor hookExecutor;
hookManager.registerHook("example", exampleHook);
hookExecutor.start();
std::this_thread::sleep_for(std::chrono::seconds(5));
hookManager.triggerHook("example");
std::this_thread::sleep_for(std::chrono::seconds(5));
hookManager.unregisterHook("example");
hookExecutor.stop();
return 0;
}
通過以上設(shè)計(jì)和實(shí)現(xiàn),可以構(gòu)建一個高可用的C++鉤子系統(tǒng),以支持大規(guī)模系統(tǒng)的需求。
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