def start(self):
"""Starts the daemon. Does initialization then calls run()."""
if self.status != Status.CREATED:
print "Can't start a %s that's already been run." \
% type(self).__name__
return
if not hasattr(self, 'id'):
self.save()
if not hasattr(self, 'log'):
self.log = make_log(self.log_path)
if settings.DEBUG:
self.log.info("WARNING, DEBUG is True, which means Django " +
"will gobble memory as it stores all database queries.")
# This try block is needed because the unit tests run daemons
# in threads, which breaks signals.
try:
for signum in (signal.SIGINT, signal.SIGTERM):
signal.signal(signum, self.signal_handler)
except ValueError:
pass
self.log.start_redirect()
self.log.info("%s initialized; starting..." % self)
self.status = Status.RUNNING
self.heartbeat = self.started = datetime.utcnow()
self.save()
self.heart.start()
try:
self.run()
except Exception:
self.set_status(Status.ERROR)
self.log.error("An internal error occured!", trace=True)
else:
if not Status.is_final(self.status):
self.set_status(Status.ENDED)
finally:
self.log.info("Shutting down...")
try:
self.clean_up()
except:
self.log.error("Clean up function failed.", trace=True)
if not Status.is_final(self.status):
self.set_status(Status.ERROR)
self.heart.flag.set()
self.heart.join()
self.ended = datetime.utcnow()
self.save()
if settings.BACKUP_SYSTEM:
self.log.info('Backing up log file...')
try:
if backup_log(self.log_path):
self.log.info('Completed log backup.')
else:
self.log.error('Failed to backup log.')
except:
self.log.error('Failed to backup log.', trace=True)
self.log.info('%s has been shut down successfully.' % self)
self.log.stop_redirect()
self.log.close()
def start(self):
"""Starts the daemon. Does initialization then calls run()."""
if self.status != Status.CREATED:
print "Can't start a %s that's already been run." \
% type(self).__name__
return
if not hasattr(self, 'id'):
self.save()
if not hasattr(self, 'log'):
self.log = make_log(self.log_path)
if settings.DEBUG:
self.log.info(
"WARNING, DEBUG is True, which means Django " +
"will gobble memory as it stores all database queries.")
# This try block is needed because the unit tests run daemons
# in threads, which breaks signals.
try:
for signum in (signal.SIGINT, signal.SIGTERM):
signal.signal(signum, self.signal_handler)
except ValueError:
pass
self.log.start_redirect()
self.log.info("%s initialized; starting..." % self)
self.status = Status.RUNNING
self.heartbeat = self.started = datetime.utcnow()
self.save()
self.heart.start()
try:
self.run()
except Exception:
self.set_status(Status.ERROR)
self.log.error("An internal error occured!", trace=True)
else:
if not Status.is_final(self.status):
self.set_status(Status.ENDED)
finally:
self.log.info("Shutting down...")
try:
self.clean_up()
except:
self.log.error("Clean up function failed.", trace=True)
if not Status.is_final(self.status):
self.set_status(Status.ERROR)
self.heart.flag.set()
self.heart.join()
self.ended = datetime.utcnow()
self.save()
if settings.BACKUP_SYSTEM:
self.log.info('Backing up log file...')
try:
if backup_log(self.log_path):
self.log.info('Completed log backup.')
else:
self.log.error('Failed to backup log.')
except:
self.log.error('Failed to backup log.', trace=True)
self.log.info('%s has been shut down successfully.' % self)
self.log.stop_redirect()
self.log.close()
def backup_instance_log(self, instance):
self.log.info("Attempting upload of log for %s..." % instance)
if backup_log(instance.log_path):
self.log.info("Completed upload of log for %s." % instance)
else:
self.log.info("Failed to upload log for %s." % instance)
def backup_instance_log(self, instance):
self.log.info("Attempting upload of log for %s..." % instance)
if backup_log(instance.log_path):
self.log.info("Completed upload of log for %s." % instance)
else:
self.log.info("Failed to upload log for %s." % instance)
