mirror of https://gitee.com/bigwinds/arangodb
62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
////////////////////////////////////////////////////////////////////////////////
|
|
/// DISCLAIMER
|
|
///
|
|
/// Copyright 2014-2017 ArangoDB GmbH, Cologne, Germany
|
|
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
|
|
///
|
|
/// Licensed under the Apache License, Version 2.0 (the "License");
|
|
/// you may not use this file except in compliance with the License.
|
|
/// You may obtain a copy of the License at
|
|
///
|
|
/// http://www.apache.org/licenses/LICENSE-2.0
|
|
///
|
|
/// Unless required by applicable law or agreed to in writing, software
|
|
/// distributed under the License is distributed on an "AS IS" BASIS,
|
|
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
/// See the License for the specific language governing permissions and
|
|
/// limitations under the License.
|
|
///
|
|
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
|
|
///
|
|
/// @author Simon Grätzer
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef ARANGOD_MMFILES_MMFILES_WAL_ACCESS_H
|
|
#define ARANGOD_MMFILES_MMFILES_WAL_ACCESS_H 1
|
|
|
|
#include "StorageEngine/WalAccess.h"
|
|
|
|
namespace arangodb {
|
|
|
|
/// @brief StorageEngine agnostic wal access interface.
|
|
/// TODO: add methods for _admin/wal/ and get rid of engine specific handlers
|
|
class MMFilesWalAccess final : public WalAccess {
|
|
public:
|
|
MMFilesWalAccess() {}
|
|
|
|
/// {"tickMin":"123", "tickMax":"456", "version":"3.2", "serverId":"abc"}
|
|
Result tickRange(std::pair<TRI_voc_tick_t, TRI_voc_tick_t>& minMax) const override;
|
|
|
|
/// {"lastTick":"123",
|
|
/// "version":"3.2",
|
|
/// "serverId":"abc",
|
|
/// "clients": {
|
|
/// "serverId": "ass", "lastTick":"123", ...
|
|
/// }}
|
|
///
|
|
TRI_voc_tick_t lastTick() const override;
|
|
|
|
/// should return the list of transactions started, but not committed in that
|
|
/// range (range can be adjusted)
|
|
WalAccessResult openTransactions(WalAccess::Filter const& filter,
|
|
TransactionCallback const&) const override;
|
|
|
|
/// Tails the wall, this will already sanitize the
|
|
WalAccessResult tail(WalAccess::Filter const& filter, size_t chunkSize,
|
|
TRI_voc_tid_t barrierId,
|
|
MarkerCallback const&) const override;
|
|
};
|
|
} // namespace arangodb
|
|
|
|
#endif
|