mirror of https://gitee.com/bigwinds/arangodb
95 lines
2.8 KiB
C++
95 lines
2.8 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 Kaveh Vahedipour
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGOD_CONSENSUS_INCEPTION_H
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#define ARANGOD_CONSENSUS_INCEPTION_H 1
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#include <memory>
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#include "Agency/AgencyCommon.h"
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#include "Basics/Common.h"
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#include "Basics/ConditionVariable.h"
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#include "Basics/Mutex.h"
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#include "Basics/Thread.h"
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#include <velocypack/Builder.h>
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#include <velocypack/velocypack-aliases.h>
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namespace arangodb {
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namespace consensus {
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class Agent;
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/// @brief This class organises the startup of the agency until the point
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/// where the RAFT implementation can commence function
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class Inception : public Thread {
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public:
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/// @brief Default ctor
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Inception();
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/// @brief Construct with agent
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explicit Inception(Agent*);
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/// @brief Defualt dtor
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virtual ~Inception();
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/// @brief Report in from callbacks
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void reportIn(std::string const&, uint64_t);
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/// @brief Report in from other agents measurements
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void reportIn(query_t const&);
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/// @brief Report acknowledged version for peer id
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void reportVersionForEp(std::string const&, size_t);
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void beginShutdown() override;
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void run() override;
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private:
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/// @brief We are a restarting active RAFT agent
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bool restartingActiveAgent();
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/// @brief Try to estimate good RAFT min/max timeouts
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bool estimateRAFTInterval();
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/// @brief Gossip your way into the agency
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void gossip();
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Agent* _agent; //< @brief The agent
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arangodb::basics::ConditionVariable _cv; //< @brief For proper shutdown
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std::vector<double> _pings; //< @brief pings
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std::map<std::string,size_t> _acked; //< @brief acknowledged config version
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mutable arangodb::Mutex _vLock; //< @brieg Guard _acked
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mutable arangodb::Mutex _pLock; //< @brief Guard _pings
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std::vector<std::vector<double>> _measurements; //< @brief measurements
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mutable arangodb::Mutex _mLock; //< @brief Guard _measurements
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};
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}}
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#endif
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