mirror of https://gitee.com/bigwinds/arangodb
71 lines
2.3 KiB
C++
71 lines
2.3 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 Andreas Streichardt
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////////////////////////////////////////////////////////////////////////////////
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//XXX #warning MOP nope, include guards
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#pragma once
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//XXX #warning MOP order, Common.h
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#include <functional>
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#include <memory>
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#include "Cluster/AgencyComm.h"
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#include <velocypack/Builder.h>
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#include <velocypack/velocypack-aliases.h>
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#include "Basics/Mutex.h"
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namespace arangodb {
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class AgencyCallback {
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public:
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//////////////////////////////////////////////////////////////////////////////
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/// @brief ctor
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//////////////////////////////////////////////////////////////////////////////
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AgencyCallback(AgencyComm&, std::string const&,
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std::function<bool(VPackSlice const&)> const&, bool needsValue);
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//////////////////////////////////////////////////////////////////////////////
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/// @brief wait a specified timeout. execute cb if watch didn't fire
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//////////////////////////////////////////////////////////////////////////////
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void waitWithFailover(double timeout);
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std::string const key;
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void refetchAndUpdate();
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private:
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arangodb::Mutex _lock;
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AgencyComm& _agency;
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std::function<bool(VPackSlice const&)> const _cb;
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std::shared_ptr<VPackBuilder> _lastData;
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bool const _needsValue;
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// execute callback with current value data
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bool execute(std::shared_ptr<VPackBuilder>);
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// execute callback without any data
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bool executeEmpty();
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void checkValue(std::shared_ptr<VPackBuilder>);
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};
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}
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