Share "Last reload attempt failed" time across Icinga process tree on…

… *nix ... as only the umbrella process knows that time, but the icinga check running in the main process also needs to know it. refs #8428
Icinga · Apr 13, 2023 · b078222 · b078222
1 parent 2ee776b
commit b078222
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Showing 3 changed files with 23 additions and 1 deletion.
diff --git a/lib/base/application.cpp b/lib/base/application.cpp
@@ -62,7 +62,12 @@ int Application::m_ArgC;
 char **Application::m_ArgV;
 double Application::m_StartTime;
 bool Application::m_ScriptDebuggerEnabled = false;
-double Application::m_LastReloadFailed;
+
+#ifdef _WIN32
+double Application::m_LastReloadFailed = 0;
+#else /* _WIN32 */
+SharedMemory<Atomic<double>> Application::m_LastReloadFailed (0);
+#endif /* _WIN32 */
 
 #ifdef _WIN32
 static LPTOP_LEVEL_EXCEPTION_FILTER l_DefaultUnhandledExceptionFilter = nullptr;
@@ -1208,12 +1213,20 @@ void Application::SetScriptDebuggerEnabled(bool enabled)
 
 double Application::GetLastReloadFailed()
 {
+#ifdef _WIN32
 	return m_LastReloadFailed;
+#else /* _WIN32 */
+	return m_LastReloadFailed.Get().load();
+#endif /* _WIN32 */
 }
 
 void Application::SetLastReloadFailed(double ts)
 {
+#ifdef _WIN32
 	m_LastReloadFailed = ts;
+#else /* _WIN32 */
+	m_LastReloadFailed.Get().store(ts);
+#endif /* _WIN32 */
 }
 
 void Application::ValidateName(const Lazy<String>& lvalue, const ValidationUtils& utils)

diff --git a/lib/base/application.hpp b/lib/base/application.hpp
@@ -4,9 +4,11 @@
 #define APPLICATION_H
 
 #include "base/i2-base.hpp"
+#include "base/atomic.hpp"
 #include "base/application-ti.hpp"
 #include "base/logger.hpp"
 #include "base/configuration.hpp"
+#include "base/shared-memory.hpp"
 #include <iosfwd>
 
 namespace icinga
@@ -137,7 +139,12 @@ class Application : public ObjectImpl<Application> {
 	static double m_StartTime;
 	static double m_MainTime;
 	static bool m_ScriptDebuggerEnabled;
+#ifdef _WIN32
 	static double m_LastReloadFailed;
+#else /* _WIN32 */
+	static_assert(std::atomic<double>::is_always_lock_free);
+	static SharedMemory<Atomic<double>> m_LastReloadFailed;
+#endif /* _WIN32 */
 
 #ifdef _WIN32
 	static BOOL WINAPI CtrlHandler(DWORD type);

diff --git a/lib/cli/daemoncommand.cpp b/lib/cli/daemoncommand.cpp
@@ -813,13 +813,15 @@ int DaemonCommand::Run(const po::variables_map& vm, const std::vector<std::strin
 					break;
 				case -2:
 					Log(LogCritical, "Application", "Found error in config: reloading aborted");
+					Application::SetLastReloadFailed(Utility::GetTime());
 					break;
 				default:
 					Log(LogInformation, "Application")
 						<< "Reload done, old process shutting down. Child process with PID '" << nextWorker << "' is taking over.";
 
 					NotifyStatus("Shutting down old instance...");
 
+					Application::SetLastReloadFailed(0);
 					(void)kill(currentWorker, SIGTERM);
 
 					{