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Don't let server mark client as offline until readings fail 3 times in a row

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previously we were only letting this fail once, if that
This commit is contained in:
Lance Edgar 2018-09-28 11:57:27 -05:00
parent ab38143039
commit 018a9dcb08
1 changed files with 20 additions and 4 deletions
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20
rattail_tempmon/server.py
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@ -80,10 +80,26 @@ class TempmonServerDaemon(Daemon):
online = True
for probe in client.enabled_probes():
online = online and bool(self.check_readings_for_probe(session, probe, cutoff))
if not online and client.online:
# if client was previously marked online, but we have no "new"
# readings, then let's look closer to see if it's been long enough to
# mark it offline
if client.online and not online:
# we consider client offline if it has failed to take readings for
# 3 times in a row. allow a one minute buffer for good measure.
cutoff = self.now - datetime.timedelta(seconds=(delay * 3) + 60)
reading = session.query(tempmon.Reading)\
.filter(tempmon.Reading.client == client)\
.filter(tempmon.Reading.taken >= cutoff)\
.first()
if not reading:
log.info("marking client as OFFLINE: {}".format(client))
client.online = False
send_email(self.config, 'tempmon_client_offline', {"client":client, "now":localtime(self.config,self.now,from_utc=True)})
send_email(self.config, 'tempmon_client_offline', {
'client': client,
'now': localtime(self.config, self.now, from_utc=True),
})
def check_readings_for_probe(self, session, probe, cutoff):