ttl_reply.hpp

#pragma once
 
#include <cstdint>
#include <string>
 
#include <userver/storages/redis/impl/exception.hpp>
#include <userver/storages/redis/impl/types.hpp>
 
USERVER_NAMESPACE_BEGIN
 
namespace redis {
 
class TtlReply final {
 public:
  enum class TtlReplyValue { kKeyDoesNotExist = -2, kKeyHasNoExpiration = -1 };
 
  static constexpr TtlReplyValue kKeyDoesNotExist =
      TtlReplyValue::kKeyDoesNotExist;
  static constexpr TtlReplyValue kKeyHasNoExpiration =
      TtlReplyValue::kKeyHasNoExpiration;
 
  explicit TtlReply(int64_t value);
  TtlReply(TtlReplyValue value);
 
  static TtlReply Parse(ReplyData&& reply_data,
                        const std::string& request_description = {});
 
  bool KeyExists() const;
  bool KeyHasExpiration() const;
  size_t GetExpireSeconds() const;
 
 private:
  int64_t value_;
};
 
/// Trying to get expiration from a nonexistent or a persistent key
class KeyHasNoExpirationException : public Exception {
 public:
  using Exception::Exception;
};
 
}  // namespace redis
 
USERVER_NAMESPACE_END