mirror of https://gitee.com/bigwinds/arangodb
65 lines
2.3 KiB
C++
65 lines
2.3 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 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 Jan Steemann
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGOD_SHARDING_SHARDING_FEATURE_H
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#define ARANGOD_SHARDING_SHARDING_FEATURE_H 1
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#include "ApplicationFeatures/ApplicationFeature.h"
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#include "Basics/Common.h"
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#include "Sharding/ShardingStrategy.h"
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#include <velocypack/Slice.h>
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namespace arangodb {
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class ShardingInfo;
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class ShardingFeature : public application_features::ApplicationFeature {
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public:
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explicit ShardingFeature(application_features::ApplicationServer& server);
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void prepare() override final;
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void start() override final;
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void registerFactory(std::string const& name, ShardingStrategy::FactoryFunction const&);
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std::unique_ptr<ShardingStrategy> fromVelocyPack(arangodb::velocypack::Slice slice,
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ShardingInfo* sharding);
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std::unique_ptr<ShardingStrategy> create(std::string const& name, ShardingInfo* sharding);
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/// @brief returns the name of the default sharding strategy for new
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/// collections
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std::string getDefaultShardingStrategyForNewCollection(VPackSlice const& properties) const;
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private:
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/// @brief returns the name of the default sharding strategy for existing
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/// collections without a sharding strategy assigned
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std::string getDefaultShardingStrategy(ShardingInfo const* sharding) const;
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std::unordered_map<std::string, ShardingStrategy::FactoryFunction> _factories;
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};
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} // namespace arangodb
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#endif |