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