mirror of https://github.com/Icinga/icinga2.git
171 lines
4.3 KiB
C++
171 lines
4.3 KiB
C++
/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
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#ifndef APPLICATION_H
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#define APPLICATION_H
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#include "base/i2-base.hpp"
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#include "base/atomic.hpp"
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#include "base/application-ti.hpp"
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#include "base/logger.hpp"
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#include "base/configuration.hpp"
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#include "base/shared-memory.hpp"
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#include <cstdint>
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#include <iosfwd>
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#include <type_traits>
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namespace icinga
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{
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class ThreadPool;
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/**
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* Abstract base class for applications.
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*
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* @ingroup base
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*/
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class Application : public ObjectImpl<Application> {
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public:
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DECLARE_OBJECT(Application);
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static boost::signals2::signal<void ()> OnReopenLogs;
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~Application() override;
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static void InitializeBase();
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static void UninitializeBase();
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static Application::Ptr GetInstance();
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static void Exit(int rc);
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int Run();
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/**
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* Starts the application.
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*
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* @returns The exit code of the application.
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*/
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virtual int Main() = 0;
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static void SetResourceLimits();
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static int GetArgC();
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static void SetArgC(int argc);
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static char **GetArgV();
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static void SetArgV(char **argv);
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static void InstallExceptionHandlers();
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static void RequestShutdown();
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static void RequestRestart();
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static void RequestReopenLogs();
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#ifndef _WIN32
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static void SetUmbrellaProcess(pid_t pid);
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#endif /* _WIN32 */
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static bool IsShuttingDown();
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static bool IsRestarting();
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static void SetDebuggingSeverity(LogSeverity severity);
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static LogSeverity GetDebuggingSeverity();
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void UpdatePidFile(const String& filename);
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void UpdatePidFile(const String& filename, pid_t pid);
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void ClosePidFile(bool unlink);
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static pid_t ReadPidFile(const String& filename);
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static String GetExePath(const String& argv0);
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#ifdef _WIN32
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static bool IsProcessElevated();
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#endif /* _WIN32 */
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static int GetDefaultRLimitFiles();
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static int GetDefaultRLimitProcesses();
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static int GetDefaultRLimitStack();
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static double GetReloadTimeout();
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static ThreadPool& GetTP();
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static String GetAppVersion();
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static String GetAppSpecVersion();
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static String GetAppEnvironment();
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static void SetAppEnvironment(const String& name);
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static double GetStartTime();
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static void SetStartTime(double ts);
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static double GetUptime();
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static bool GetScriptDebuggerEnabled();
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static void SetScriptDebuggerEnabled(bool enabled);
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static double GetLastReloadFailed();
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static void SetLastReloadFailed(double ts);
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static void DisplayInfoMessage(std::ostream& os, bool skipVersion = false);
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protected:
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void OnConfigLoaded() override;
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void Stop(bool runtimeRemoved) override;
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void RunEventLoop();
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pid_t StartReloadProcess();
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virtual void OnShutdown();
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void ValidateName(const Lazy<String>& lvalue, const ValidationUtils& utils) final;
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private:
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static Application::Ptr m_Instance; /**< The application instance. */
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static bool m_ShuttingDown; /**< Whether the application is in the process of shutting down. */
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static bool m_RequestRestart; /**< A restart was requested through SIGHUP */
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static pid_t m_ReloadProcess; /**< The PID of a subprocess doing a reload, only valid when l_Restarting==true */
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static bool m_RequestReopenLogs; /**< Whether we should re-open log files. */
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#ifndef _WIN32
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static pid_t m_UmbrellaProcess; /**< The PID of the Icinga umbrella process */
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#endif /* _WIN32 */
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static int m_ArgC; /**< The number of command-line arguments. */
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static char **m_ArgV; /**< Command-line arguments. */
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FILE *m_PidFile = nullptr; /**< The PID file */
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static bool m_Debugging; /**< Whether debugging is enabled. */
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static LogSeverity m_DebuggingSeverity; /**< Whether debugging severity is set. */
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static double m_StartTime;
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static double m_MainTime;
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static bool m_ScriptDebuggerEnabled;
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#ifdef _WIN32
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static double m_LastReloadFailed;
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#else /* _WIN32 */
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typedef Atomic<std::conditional_t<Atomic<double>::is_always_lock_free, double, uint32_t>> AtomicTs;
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static_assert(AtomicTs::is_always_lock_free);
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static SharedMemory<AtomicTs> m_LastReloadFailed;
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#endif /* _WIN32 */
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#ifdef _WIN32
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static BOOL WINAPI CtrlHandler(DWORD type);
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static LONG WINAPI SEHUnhandledExceptionFilter(PEXCEPTION_POINTERS exi);
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#endif /* _WIN32 */
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static void DisplayBugMessage(std::ostream& os);
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static void SigAbrtHandler(int signum);
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static void SigUsr1Handler(int signum);
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static void ExceptionHandler();
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static String GetCrashReportFilename();
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static void AttachDebugger(const String& filename, bool interactive);
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};
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}
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#endif /* APPLICATION_H */
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