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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#pragma once
#include "td/db/SeqKeyValue.h"
#include "td/utils/port/RwMutex.h"
#include "td/utils/Slice.h"
#include <unordered_map>
#include <utility>
namespace td {
class TsSeqKeyValue {
public:
using SeqNo = SeqKeyValue::SeqNo;
TsSeqKeyValue() = default;
explicit TsSeqKeyValue(SeqKeyValue kv) : kv_(std::move(kv)) {
}
TsSeqKeyValue(TsSeqKeyValue &&) = default;
TsSeqKeyValue &operator=(TsSeqKeyValue &&) = default;
TsSeqKeyValue(const TsSeqKeyValue &) = delete;
TsSeqKeyValue &operator=(const TsSeqKeyValue &) = delete;
~TsSeqKeyValue() = default;
SeqNo set(Slice key, Slice value) {
auto lock = rw_mutex_.lock_write().move_as_ok();
return kv_.set(key, value);
}
std::pair<SeqNo, RwMutex::WriteLock> set_and_lock(Slice key, Slice value) {
auto lock = rw_mutex_.lock_write().move_as_ok();
return std::make_pair(kv_.set(key, value), std::move(lock));
}
SeqNo erase(const string &key) {
auto lock = rw_mutex_.lock_write().move_as_ok();
return kv_.erase(key);
}
std::pair<SeqNo, RwMutex::WriteLock> erase_and_lock(const string &key) {
auto lock = rw_mutex_.lock_write().move_as_ok();
return std::make_pair(kv_.erase(key), std::move(lock));
}
string get(const string &key) {
auto lock = rw_mutex_.lock_read().move_as_ok();
return kv_.get(key);
}
size_t size() const {
return kv_.size();
}
std::unordered_map<string, string> get_all() {
auto lock = rw_mutex_.lock_write().move_as_ok();
return kv_.get_all();
}
// not thread safe method
SeqKeyValue &inner() {
return kv_;
}
auto lock() {
return rw_mutex_.lock_write().move_as_ok();
}
private:
RwMutex rw_mutex_;
SeqKeyValue kv_;
};
} // namespace td
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