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construct/include/ircd/db/database/txn.h
2018-10-15 22:31:29 -07:00

48 lines
1.8 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
#pragma once
#define HAVE_IRCD_DB_DATABASE_TXN_H
// This file is not part of the standard include stack because it requires
// RocksDB symbols which we cannot forward declare. It is used internally
// and does not need to be included by general users of IRCd.
struct ircd::db::txn::handler
:rocksdb::WriteBatch::Handler
{
using Status = rocksdb::Status;
using Slice = rocksdb::Slice;
const database &d;
const std::function<bool (const delta &)> &cb;
bool _continue {true};
Status callback(const delta &) noexcept;
Status callback(const uint32_t &, const op &, const Slice &a, const Slice &b) noexcept;
bool Continue() noexcept override;
Status MarkRollback(const Slice &xid) noexcept override;
Status MarkCommit(const Slice &xid) noexcept override;
Status MarkEndPrepare(const Slice &xid) noexcept override;
Status MarkBeginPrepare(bool = false) noexcept override;
Status MergeCF(const uint32_t cfid, const Slice &, const Slice &) noexcept override;
Status SingleDeleteCF(const uint32_t cfid, const Slice &) noexcept override;
Status DeleteRangeCF(const uint32_t cfid, const Slice &, const Slice &) noexcept override;
Status DeleteCF(const uint32_t cfid, const Slice &) noexcept override;
Status PutCF(const uint32_t cfid, const Slice &, const Slice &) noexcept override;
handler(const database &d,
const std::function<bool (const delta &)> &cb)
:d{d}
,cb{cb}
{}
};