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arangodb/arangod/Agency/ApplicationAgency.h

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C++

////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Kaveh Vahedipour
////////////////////////////////////////////////////////////////////////////////
#ifndef ARANGOD_AGENCY_APPLICATION_AGENCY_H
#define ARANGOD_AGENCY_APPLICATION_AGENCY_H 1
#include "Basics/Common.h"
#include "HttpServer/ApplicationEndpointServer.h"
#include "ApplicationServer/ApplicationFeature.h"
#include "Agency/Agent.h"
struct TRI_server_t;
namespace arangodb {
class ApplicationV8;
namespace aql {
class QueryRegistry;
}
namespace rest {
class Task;
////////////////////////////////////////////////////////////////////////////////
/// @brief application server with agency
////////////////////////////////////////////////////////////////////////////////
using agent_t = consensus::Agent;
class ApplicationAgency : virtual public arangodb::rest::ApplicationFeature {
private:
ApplicationAgency(ApplicationAgency const&);
ApplicationAgency& operator=(ApplicationAgency const&);
public:
ApplicationAgency(TRI_server_t*, ApplicationEndpointServer*,
ApplicationV8* applicationV8,
aql::QueryRegistry* queryRegistry);
~ApplicationAgency();
public:
/// @brief builds the dispatcher queue
void buildStandardQueue(size_t nrThreads, size_t maxSize);
/// @brief builds the additional AQL dispatcher queue
void buildAQLQueue(size_t nrThreads, size_t maxSize);
/// @brief builds an additional dispatcher queue
void buildExtraQueue(size_t name, size_t nrThreads, size_t maxSize);
/// @brief returns the number of used threads
size_t size();
/// @brief sets the processor affinity
void setProcessorAffinity(std::vector<size_t> const& cores);
/// @brief stop feature
void stop () override;
public:
/// @brief setup options
void setupOptions(std::map<std::string,
arangodb::basics::ProgramOptionsDescription>&) override final;
bool prepare() override final;
bool start() override final;
bool open() override final;
void close() override final;
agent_t* agent() const;
private:
TRI_server_t* _server;
uint64_t _size; /**< @brief: agency size (default: 5)*/
double _min_election_timeout; /**< @brief: min election timeout */
double _max_election_timeout; /**< @brief: max election timeout */
double _election_call_rate_mul; /**< @brief: */
bool _notify;
bool _supervision;
/**< @brief interval between retry to slaves*/
std::vector<std::string> _agency_endpoints; /**< @brief agency adresses */
std::unique_ptr<agent_t> _agent;
uint32_t _agent_id;
ApplicationEndpointServer* _endpointServer;
ApplicationV8* _applicationV8;
aql::QueryRegistry* _queryRegistry;
bool _wait_for_sync;
double _supervision_frequency;
};
}
}
#endif