81 lines
1.8 KiB
C++
81 lines
1.8 KiB
C++
#pragma once
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#include "kv_store.hpp"
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#include <random>
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#include <unordered_map>
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#include <mutex>
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class SessionStore {
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public:
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SessionStore() : rng_(std::random_device{}()) {
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store_.set_file("sessions.txt");
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}
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std::string create() {
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std::string id = generate_id();
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std::lock_guard<std::mutex> lock(mutex_);
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sessions_[id] = {};
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return id;
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}
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std::optional<std::string> get(const std::string& id, const std::string& key) {
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std::lock_guard<std::mutex> lock(mutex_);
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auto it = sessions_.find(id);
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if (it == sessions_.end()) return std::nullopt;
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auto data_it = it->second.find(key);
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return data_it != it->second.end() ? std::optional<std::string>{data_it->second} : std::nullopt;
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}
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void set(const std::string& id, const std::string& key, const std::string& value) {
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std::lock_guard<std::mutex> lock(mutex_);
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sessions_[id][key] = value;
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}
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bool del(const std::string& id) {
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std::lock_guard<std::mutex> lock(mutex_);
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return sessions_.erase(id) > 0;
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}
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size_t size() {
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std::lock_guard<std::mutex> lock(mutex_);
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return sessions_.size();
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}
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void set_file(const std::string& filename) {
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store_.set_file(filename);
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}
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void load() {
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store_.load();
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}
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void save() {
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std::lock_guard<std::mutex> lock(mutex_);
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for (const auto& [id, data] : sessions_) {
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for (const auto& [key, value] : data) {
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store_.set(id + ":" + key, value);
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}
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}
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store_.save();
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}
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private:
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std::unordered_map<std::string, std::unordered_map<std::string, std::string>> sessions_;
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mutable std::mutex mutex_;
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KeyValueStore store_;
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std::mt19937 rng_;
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std::string generate_id() {
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static const char chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
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std::string id;
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id.reserve(16);
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for (int i = 0; i < 16; ++i) {
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id += chars[rng_() % (sizeof(chars) - 1)];
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}
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return id;
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}
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};
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