Mercurial > templog
diff py/tempserver.py @ 219:16a83e2c97a0
sleep on a semaphore so it can start/stop immediately when there's a SIGHUP
from the web UI. makes it seem more magical.
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Fri, 19 Dec 2014 21:52:50 +0800 |
| parents | 5eb7e2400c18 |
| children | d9e81a563923 |
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--- a/py/tempserver.py Fri Dec 19 21:39:18 2014 +0800 +++ b/py/tempserver.py Fri Dec 19 21:52:50 2014 +0800 @@ -25,6 +25,7 @@ self.readings = [] self.current = (None, None) self.fridge = None + self._wakeup = gevent.event.Event() # don't patch os, fork() is used by daemonize gevent.monkey.patch_all(os=False, thread=False) @@ -35,6 +36,7 @@ self.uploader = uploader.Uploader(self) self.params.load() self.set_sensors(sensor_ds18b20.DS18B20s(self)) + gevent.signal(signal.SIGHUP, self._reload_signal) return self def __exit__(self, exc_type, exc_value, traceback): @@ -93,6 +95,19 @@ """ returns (wort_temp, fridge_temp) tuple """ return self.current + def sleep(self, timeout): + """ sleeps for timeout seconds, though wakes if the server's config is updated """ + self._wakeup.wait(timeout) + + def _reload_signal(self): + try: + self.params.load() + L("Reloaded.") + self._wakeup.set() + self._wakeup.clear() + except self.Error, e: + W("Problem reloading: %s" % str(e)) + def setup_logging(): logging.basicConfig(format='%(asctime)s %(message)s', datefmt='%m/%d/%Y %I:%M:%S %p',