mirror of https://gitee.com/bigwinds/arangodb
113 lines
3.5 KiB
C++
113 lines
3.5 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 Dr. Frank Celler
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/// @author Jan Steemann
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/// @author Dan Larkin-York
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGOD_VOCBASE_METHODS_TASKS_H
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#define ARANGOD_VOCBASE_METHODS_TASKS_H 1
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#include <chrono>
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#include <v8.h>
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#include <velocypack/Builder.h>
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#include "Basics/Mutex.h"
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#include "Basics/Result.h"
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#include "Basics/VelocyPackHelper.h"
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#include "Scheduler/Scheduler.h"
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struct TRI_vocbase_t;
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namespace arangodb {
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class DatabaseGuard;
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class ExecContext;
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class Task : public std::enable_shared_from_this<Task> {
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public:
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static std::shared_ptr<Task> createTask(std::string const& id, std::string const& name,
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TRI_vocbase_t*, std::string const& command,
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bool allowUseDatabase, int& ec);
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static int unregisterTask(std::string const& id, bool cancel);
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static std::shared_ptr<velocypack::Builder> registeredTask(std::string const& id);
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static std::shared_ptr<velocypack::Builder> registeredTasks();
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static void shutdownTasks();
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static void removeTasksForDatabase(std::string const&);
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static bool tryCompile(v8::Isolate* isolate, std::string const& command);
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private:
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static Mutex _tasksLock;
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static std::unordered_map<std::string, std::pair<std::string, std::shared_ptr<Task>>> _tasks;
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public:
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Task(std::string const& id, std::string const& name, TRI_vocbase_t& vocbase,
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std::string const& command, bool allowUseDatabase);
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~Task();
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public:
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void setOffset(double offset);
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void setPeriod(double offset, double period);
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void setParameter(std::shared_ptr<velocypack::Builder> const& parameters);
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void setUser(std::string const& user);
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void start();
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void cancel();
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std::shared_ptr<velocypack::Builder> toVelocyPack() const;
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bool databaseMatches(std::string const&) const;
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private:
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void toVelocyPack(velocypack::Builder&) const;
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void work(ExecContext const*);
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bool queue(std::chrono::microseconds offset) ADB_WARN_UNUSED_RESULT;
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std::function<void(bool cancelled)> callbackFunction();
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std::string const& name() const { return _name; }
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private:
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std::string const _id;
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std::string const _name;
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double const _created;
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std::string _user;
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Scheduler::WorkHandle _taskHandle;
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Mutex _taskHandleMutex;
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// guard to make sure the database is not dropped while used by us
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std::unique_ptr<DatabaseGuard> _dbGuard;
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std::string const _command;
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std::shared_ptr<velocypack::Builder> _parameters;
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bool const _allowUseDatabase;
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std::chrono::microseconds _offset;
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std::chrono::microseconds _interval;
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std::atomic<bool> _periodic{false};
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};
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} // namespace arangodb
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#endif
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