mirror of https://gitee.com/bigwinds/arangodb
56 lines
2.0 KiB
C++
56 lines
2.0 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 Jan Steemann
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////////////////////////////////////////////////////////////////////////////////
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#ifndef APPLICATION_FEATURES_CLUSTER_UPGRADE_FEATURE_H
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#define APPLICATION_FEATURES_CLUSTER_UPGRADE_FEATURE_H 1
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#include "ApplicationFeatures/ApplicationFeature.h"
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namespace arangodb {
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// this feature is responsible for performing a cluster upgrade.
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// it is only doing something in a coordinator, and only if the server was started
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// with the option `--database.auto-upgrade true`. The feature is late in the
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// startup sequence, so it can use the full cluster functionality when run.
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// after the feature has executed the upgrade, it will shut down the server.
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class ClusterUpgradeFeature final : public application_features::ApplicationFeature {
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public:
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explicit ClusterUpgradeFeature(application_features::ApplicationServer& server);
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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 start() override final;
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void setBootstrapVersion();
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private:
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void tryClusterUpgrade();
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bool upgradeCoordinator();
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private:
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std::string _upgradeMode;
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};
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} // namespace arangodb
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#endif
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