74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2020
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#pragma once
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#include "td/db/SeqKeyValue.h"
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#include "td/utils/port/RwMutex.h"
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#include "td/utils/Slice.h"
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#include <unordered_map>
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#include <utility>
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namespace td {
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class TsSeqKeyValue {
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public:
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using SeqNo = SeqKeyValue::SeqNo;
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TsSeqKeyValue() = default;
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explicit TsSeqKeyValue(SeqKeyValue kv) : kv_(std::move(kv)) {
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}
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TsSeqKeyValue(TsSeqKeyValue &&) = default;
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TsSeqKeyValue &operator=(TsSeqKeyValue &&) = default;
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TsSeqKeyValue(const TsSeqKeyValue &) = delete;
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TsSeqKeyValue &operator=(const TsSeqKeyValue &) = delete;
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~TsSeqKeyValue() = default;
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SeqNo set(Slice key, Slice value) {
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auto lock = rw_mutex_.lock_write().move_as_ok();
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return kv_.set(key, value);
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}
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std::pair<SeqNo, RwMutex::WriteLock> set_and_lock(Slice key, Slice value) {
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auto lock = rw_mutex_.lock_write().move_as_ok();
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return std::make_pair(kv_.set(key, value), std::move(lock));
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}
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SeqNo erase(const string &key) {
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auto lock = rw_mutex_.lock_write().move_as_ok();
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return kv_.erase(key);
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}
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std::pair<SeqNo, RwMutex::WriteLock> erase_and_lock(const string &key) {
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auto lock = rw_mutex_.lock_write().move_as_ok();
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return std::make_pair(kv_.erase(key), std::move(lock));
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}
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string get(const string &key) {
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auto lock = rw_mutex_.lock_read().move_as_ok();
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return kv_.get(key);
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}
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size_t size() const {
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return kv_.size();
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}
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std::unordered_map<string, string> get_all() {
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auto lock = rw_mutex_.lock_write().move_as_ok();
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return kv_.get_all();
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}
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// not thread safe method
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SeqKeyValue &inner() {
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return kv_;
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}
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auto lock() {
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return rw_mutex_.lock_write().move_as_ok();
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}
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private:
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RwMutex rw_mutex_;
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SeqKeyValue kv_;
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};
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} // namespace td
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