74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
#pragma once
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#include <mutex>
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#include <string>
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#include <memory>
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#include <optional>
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#include <exception>
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wpragmas"
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#pragma GCC diagnostic ignored "-Wc99-extensions"
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#pragma GCC diagnostic ignored "-Wconversion"
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#pragma GCC diagnostic ignored "-Wpedantic"
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#include <hiredis.h>
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#pragma GCC diagnostic pop
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class RedisException : public std::exception {
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public:
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RedisException(const char* error_) : error(error_) {}
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RedisException(const char* error_, size_t length) : error(error_, length) {}
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const char* what() const noexcept {
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return this->error.c_str();
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}
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std::string error;
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};
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using RedisReply = std::unique_ptr<redisReply, decltype(&freeReplyObject)>;
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class Redis {
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public:
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Redis(const Redis&) = delete;
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Redis operator=(const Redis&) = delete;
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Redis(const std::string& address, int port);
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Redis(const std::string& unix);
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~Redis();
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template<typename... Args>
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RedisReply command(const char* format, Args... args) {
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std::lock_guard<std::mutex> guard(this->_mutex);
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redisReply* raw_reply = static_cast<redisReply*>(redisCommand(this->_context, format, args...));
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if (!raw_reply) {
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throw RedisException(this->_context->errstr);
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}
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RedisReply reply(raw_reply, freeReplyObject);
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if (reply->type == REDIS_REPLY_ERROR) {
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throw RedisException(reply->str, reply->len);
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}
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return reply;
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}
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void auth(const std::string& username, const std::string& password);
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void auth(const std::string& password);
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time_t ttl(const std::string& key);
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bool expire(const std::string& key, time_t expiry);
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bool expire_nx(const std::string& key, time_t expiry);
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std::optional<std::string> get(const std::string& key);
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void set(const std::string& key, const std::string& value, time_t expiry);
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std::optional<std::string> hget(const std::string& key, const std::string& field);
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void hset(const std::string& key, const std::string& field, const std::string& value);
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private:
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redisContext* _context;
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std::mutex _mutex;
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bool _fake_expire_nx = false;
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};
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