icinga2/lib/base/process.hpp

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/******************************************************************************
* Icinga 2 *
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* Copyright (C) 2012-2016 Icinga Development Team (https://www.icinga.org/) *
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* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#ifndef PROCESS_H
#define PROCESS_H
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#include "base/i2-base.hpp"
#include "base/dictionary.hpp"
#include <boost/function.hpp>
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#include <sstream>
#include <deque>
#include <vector>
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namespace icinga
{
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/**
* The result of a Process task.
*
* @ingroup base
*/
struct ProcessResult
{
pid_t PID;
double ExecutionStart;
double ExecutionEnd;
long ExitStatus;
String Output;
};
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/**
* A process task. Executes an external application and returns the exit
* code and console output.
*
* @ingroup base
*/
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class I2_BASE_API Process : public Object
{
public:
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DECLARE_PTR_TYPEDEFS(Process);
#ifdef _WIN32
typedef String Arguments;
typedef HANDLE ProcessHandle;
typedef HANDLE ConsoleHandle;
#else /* _WIN32 */
typedef std::vector<String> Arguments;
typedef pid_t ProcessHandle;
typedef int ConsoleHandle;
#endif /* _WIN32 */
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static const std::deque<Process::Ptr>::size_type MaxTasksPerThread = 512;
Process(const Arguments& arguments, const Dictionary::Ptr& extraEnvironment = Dictionary::Ptr());
~Process(void);
void SetTimeout(double timeout);
double GetTimeout(void) const;
void Run(const boost::function<void (const ProcessResult&)>& callback = boost::function<void (const ProcessResult&)>());
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pid_t GetPID(void) const;
static Arguments PrepareCommand(const Value& command);
static void StaticInitialize(void);
static void ThreadInitialize(void);
static String PrettyPrintArguments(const Arguments& arguments);
private:
Arguments m_Arguments;
Dictionary::Ptr m_ExtraEnvironment;
double m_Timeout;
ProcessHandle m_Process;
pid_t m_PID;
ConsoleHandle m_FD;
#ifdef _WIN32
bool m_ReadPending;
bool m_ReadFailed;
OVERLAPPED m_Overlapped;
char m_ReadBuffer[1024];
#endif /* _WIN32 */
std::ostringstream m_OutputStream;
boost::function<void (const ProcessResult&)> m_Callback;
ProcessResult m_Result;
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static void IOThreadProc(int tid);
bool DoEvents(void);
int GetTID(void) const;
};
}
#endif /* PROCESS_H */