mirror of https://gitee.com/bigwinds/arangodb
116 lines
4.1 KiB
C++
116 lines
4.1 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2018 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_CLUSTER_CLUSTER_FEATURE_H
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#define ARANGOD_CLUSTER_CLUSTER_FEATURE_H 1
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#include "Basics/Common.h"
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#include "ApplicationFeatures/ApplicationFeature.h"
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#include "Cluster/ServerState.h"
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namespace arangodb {
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class AgencyCallbackRegistry;
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class HeartbeatThread;
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class ClusterFeature : public application_features::ApplicationFeature {
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public:
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explicit ClusterFeature(application_features::ApplicationServer& server);
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~ClusterFeature();
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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 beginShutdown() override final;
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void unprepare() override final;
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std::vector<std::string> agencyEndpoints() const { return _agencyEndpoints; }
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std::string agencyPrefix() const { return _agencyPrefix; }
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/// @return role argument as it was supplied by a user
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std::string const& myRole() const noexcept { return _myRole; }
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void syncDBServerStatusQuo();
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protected:
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void startHeartbeatThread(AgencyCallbackRegistry* agencyCallbackRegistry,
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uint64_t interval_ms, uint64_t maxFailsBeforeWarning,
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const std::string& endpoints);
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private:
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std::vector<std::string> _agencyEndpoints;
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std::string _agencyPrefix;
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std::string _myRole;
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std::string _myEndpoint;
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std::string _myAdvertisedEndpoint;
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std::uint32_t _defaultReplicationFactor = 0; // a value of 0 means it will use the min replication factor
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std::uint32_t _systemReplicationFactor = 2;
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std::uint32_t _minReplicationFactor = 1;
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std::uint32_t _maxReplicationFactor = 10; // maximum replication factor (0 = unrestricted)
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std::uint32_t _maxNumberOfShards = 1000; // maximum number of shards (0 = unrestricted)
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bool _createWaitsForSyncReplication = true;
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double _indexCreationTimeout = 3600.0;
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void reportRole(ServerState::RoleEnum);
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public:
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AgencyCallbackRegistry* agencyCallbackRegistry() const {
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return _agencyCallbackRegistry.get();
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}
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std::string const agencyCallbacksPath() const {
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return "/_api/agency/agency-callbacks";
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};
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std::string const clusterRestPath() const { return "/_api/cluster"; };
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void setUnregisterOnShutdown(bool);
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bool createWaitsForSyncReplication() const {
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return _createWaitsForSyncReplication;
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};
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double indexCreationTimeout() const { return _indexCreationTimeout; }
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uint32_t defaultReplicationFactor() { return _defaultReplicationFactor; }
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uint32_t systemReplicationFactor() { return _systemReplicationFactor; }
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std::uint32_t maxNumberOfShards() const { return _maxNumberOfShards; }
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std::uint32_t minReplicationFactor() const { return _minReplicationFactor; }
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std::uint32_t maxReplicationFactor() const { return _maxReplicationFactor; }
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void stop() override final;
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private:
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bool _unregisterOnShutdown;
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bool _enableCluster;
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bool _requirePersistedId;
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std::shared_ptr<HeartbeatThread> _heartbeatThread;
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uint64_t _heartbeatInterval;
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std::unique_ptr<AgencyCallbackRegistry> _agencyCallbackRegistry;
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ServerState::RoleEnum _requestedRole;
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};
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} // namespace arangodb
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#endif
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