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sd_notify() systemd about what we're doing right now 

refs #7329
This commit is contained in:
Alexander A. Klimov 2020-02-28 15:19:51 +01:00
parent 8b516f0c08
commit f0c763465b
1 changed files with 28 additions and 0 deletions
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28
lib/cli/daemoncommand.cpp
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@ -45,6 +45,14 @@ static po::variables_map g_AppParams;
REGISTER_CLICOMMAND("daemon", DaemonCommand);
static inline
void NotifyStatus(const char* status)
{
#ifdef HAVE_SYSTEMD
(void)sd_notifyf(0, "STATUS=%s", status);
#endif /* HAVE_SYSTEMD */
}
/*
* Daemonize(). On error, this function logs by itself and exits (i.e. does not return).
*
@ -235,12 +243,14 @@ int RunWorker(const std::vector<std::string>& configs, bool closeConsoleLog = fa
#endif /* I2_DEBUG */
Log(LogInformation, "cli", "Loading configuration file(s).");
NotifyStatus("Loading configuration file(s)...");
{
std::vector<ConfigItem::Ptr> newItems;
if (!DaemonUtility::LoadConfigFiles(configs, newItems, Configuration::ObjectsPath, Configuration::VarsPath)) {
Log(LogCritical, "cli", "Config validation failed. Re-run with 'icinga2 daemon -C' after fixing the config.");
NotifyStatus("Config validation failed.");
return EXIT_FAILURE;
}
@ -253,6 +263,8 @@ int RunWorker(const std::vector<std::string>& configs, bool closeConsoleLog = fa
Log(LogNotice, "cli")
<< "Waiting for the umbrella process to let us doing the actual work";
NotifyStatus("Waiting for the umbrella process to let us doing the actual work...");
if (closeConsoleLog) {
CloseStdIO(stderrFile);
Logger::DisableConsoleLog();
@ -266,18 +278,28 @@ int RunWorker(const std::vector<std::string>& configs, bool closeConsoleLog = fa
<< "The umbrella process let us continuing";
#endif /* _WIN32 */
NotifyStatus("Restoring the previous program state...");
/* restore the previous program state */
try {
ConfigObject::RestoreObjects(Configuration::StatePath);
} catch (const std::exception& ex) {
Log(LogCritical, "cli")
<< "Failed to restore state file: " << DiagnosticInformation(ex);
NotifyStatus("Failed to restore state file.");
return EXIT_FAILURE;
}
NotifyStatus("Activating config objects...");
// activate config only after daemonization: it starts threads and that is not compatible with fork()
if (!ConfigItem::ActivateItems(newItems, false, false, true)) {
Log(LogCritical, "cli", "Error activating configuration.");
NotifyStatus("Error activating configuration.");
return EXIT_FAILURE;
}
}
@ -296,6 +318,8 @@ int RunWorker(const std::vector<std::string>& configs, bool closeConsoleLog = fa
ApiListener::UpdateObjectAuthority();
NotifyStatus("Startup finished.");
return Application::GetInstance()->Run();
}
@ -796,6 +820,8 @@ int DaemonCommand::Run(const po::variables_map& vm, const std::vector<std::strin
Log(LogInformation, "Application")
<< "Reload done, old process shutting down. Child process with PID '" << nextWorker << "' is taking over.";
NotifyStatus("Shutting down old instance...");
(void)kill(currentWorker, SIGTERM);
{
@ -814,6 +840,8 @@ int DaemonCommand::Run(const po::variables_map& vm, const std::vector<std::strin
// Old instance shut down, allow the new one to continue working beyond config validation
(void)kill(nextWorker, SIGUSR2);
NotifyStatus("Shut down old instance.");
currentWorker = nextWorker;
}