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/*
* configuration.c
*
* See the README file for copyright information and how to reach the author.
*
*/
#include "configuration.h"
time_t cSystemNotification::lastWatchdogAt = time(0);
const char* cSystemNotification::pidfile = "";
//***************************************************************************
// Class cSystemNotification
//***************************************************************************
cSystemNotification::cSystemNotification()
: cThread("SystemNotification", yes)
{
interval = 0;
stop = no;
}
//***************************************************************************
// System Watchdog Check / notify
//***************************************************************************
void cSystemNotification::check(int force)
{
if (interval && (force || lastWatchdogAt <= time(0) - interval))
{
// notify all 'n' seconds
notify(evKeepalive);
lastWatchdogAt = time(0);
}
}
//***************************************************************************
// Start / Stop notification thread
//***************************************************************************
int cSystemNotification::startNotifyThread(int timeout)
{
threadTimeout = timeout;
Start(yes);
return success;
}
int cSystemNotification::stopNotifyThread()
{
stop = yes;
waitCondition.Broadcast();
Cancel(3);
return success;
}
//***************************************************************************
// action
//***************************************************************************
void cSystemNotification::action()
{
cMyMutex mutex;
time_t timeoutAt = time(0) + threadTimeout;
stop = no;
mutex.Lock();
while (time(0) < timeoutAt && Running() && !stop)
{
// tell(0, "loop ...");
waitCondition.TimedWait(mutex, interval*1000);
if (!stop)
check();
}
if (time(0) >= timeoutAt)
tell(0, "Warning: Ending notification thread, timeout reached!");
}
//***************************************************************************
// Notify System Deamon :o :(
//***************************************************************************
int cSystemNotification::notify(int event, const char* format, ...)
{
#ifdef USESYSD
char* message;
char* tmp;
va_list ap;
if (isEmpty(format))
format = "";
va_start(ap, format);
vasprintf(&tmp, format, ap);
switch (event)
{
case evStatus: asprintf(&message, "%s", tmp); break;
case evStopping: asprintf(&message, "STOPPING=1\n%s", tmp); break;
case evReady: asprintf(&message, "READY=1\nSTATUS=Ready\nMAINPID=%d\n%s", getpid(), tmp); break;
case evKeepalive: asprintf(&message, "WATCHDOG=1\n%s", tmp); break;
}
tell(event == evKeepalive ? 2 : 1, "Calling sd_notify(%s)", message);
sd_notify(0, message);
free(tmp);
free(message);
#endif
// handle pidfile at evReady / evStopping
if (!isEmpty(pidfile))
{
if (event == evReady)
{
FILE* f = fopen(pidfile, "w");
if (f)
{
pid_t pid = getpid();
tell(1, "Creating pidfile '%s'; pid %d", pidfile, pid);
fprintf(f, "%d\n", pid);
fclose(f);
}
else
tell(0, "Error: Can't create pid file '%s' error was (%d) '%s'",
pidfile, errno, strerror(errno));
}
else if (event == evStopping)
{
if (fileExists(pidfile))
{
tell(1, "Removing pidfile '%s'", pidfile);
removeFile(pidfile);
}
}
}
return done;
}
//***************************************************************************
//
//***************************************************************************
int cSystemNotification::getWatchdogState(int minInterval)
{
interval = 0;
#ifdef USESYSD
# ifdef SYSDWDIFO
uint64_t us = 0;
int sec;
if (sd_watchdog_enabled(0, &us) > 0 && us > 0)
{
sec = us / tmeUsecondsPerSecond;
if (sec < minInterval*2)
{
tell(0, "Warning: Systemd watchdog configured to (%ds) but min %ds are required,"
" ignoring watchdog", sec, minInterval * 2);
return no;
}
interval = sec / 2;
tell(0, "Info: Systemd watchdog request interval"
" of at least(%ds), using (%ds) now!", sec, interval);
return yes;
}
tell(0, "Info: Systemd watchdog not configured, epgd won't be sending keep-alive messages!");
# else
interval = defaultInterval;
return yes;
# endif
#else
tell(0, "Info: Systemd support not enabled, epgd won't be sending notifications!");
#endif
return no;
}
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