mirror of https://gitee.com/bigwinds/arangodb
70 lines
2.6 KiB
C++
70 lines
2.6 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2016 ArangoDB 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 Dr. Frank Celler
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////////////////////////////////////////////////////////////////////////////////
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#ifndef APPLICATION_FEATURES_UPGRADE_FEATURE_H
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#define APPLICATION_FEATURES_UPGRADE_FEATURE_H 1
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#include "ApplicationFeatures/ApplicationFeature.h"
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#include "VocBase/Methods/Upgrade.h"
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namespace arangodb {
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// this feature is responsible for performing a database upgrade.
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// it is only doing something if the server was started with the option
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// `--database.auto-upgrade true` or `--database.check-version true`.
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// On a coordinator this feature will *not* perform the actual upgrade,
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// because it is too early in the sequence. Coordinator upgrades are
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// performed by the ClusterUpgradeFeature, which is way later in the
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// startup sequence, so it can use the full cluster functionality when run.
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// after this feature has executed the upgrade, it will shut down the server.
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// in the coordinator case, this feature will not shut down the server.
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// instead, the shutdown is performed by the ClusterUpgradeFeature.
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class UpgradeFeature final : public application_features::ApplicationFeature {
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public:
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UpgradeFeature(application_features::ApplicationServer& server, int* result,
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std::vector<std::type_index> const& nonServerFeatures);
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void collectOptions(std::shared_ptr<options::ProgramOptions>) override final;
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void validateOptions(std::shared_ptr<options::ProgramOptions>) override final;
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void prepare() override final;
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void start() override final;
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void addTask(methods::Upgrade::Task&& task);
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private:
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void upgradeLocalDatabase();
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private:
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friend struct methods::Upgrade; // to allow access to '_tasks'
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bool _upgrade;
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bool _upgradeCheck;
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int* _result;
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std::vector<std::type_index> _nonServerFeatures;
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std::vector<methods::Upgrade::Task> _tasks;
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};
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} // namespace arangodb
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#endif
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