Mercurial > templog
annotate py/tempserver.py @ 157:6d799bee3508
reload config on SIGHUP
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Thu, 03 Jan 2013 20:12:07 +0800 |
| parents | d03157c7ad60 |
| children | 256505f98c4d |
| rev | line source |
|---|---|
| 148 | 1 #!/home/matt/templog/venv/bin/python |
| 141 | 2 |
| 3 import sys | |
| 4 import os | |
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5 import logging |
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6 |
| 141 | 7 import gevent |
| 145 | 8 import gevent.monkey |
| 141 | 9 |
| 10 import utils | |
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11 from utils import L,D,EX,W |
| 145 | 12 import fridge |
| 13 import config | |
| 14 import sensor_ds18b20 | |
| 15 import params | |
| 16 | |
| 141 | 17 |
| 18 class Tempserver(object): | |
| 19 def __init__(self): | |
| 20 self.readings = [] | |
| 145 | 21 self.current = (None, None) |
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22 self.fridge = None |
| 145 | 23 |
| 24 # don't patch os, fork() is used by daemonize | |
| 25 gevent.monkey.patch_all(os=False, thread=False) | |
| 141 | 26 |
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27 def __enter__(self): |
| 145 | 28 self.params = params.Params() |
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29 self.fridge = fridge.Fridge(self) |
| 145 | 30 self.params.load() |
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31 self.set_sensors(sensor_ds18b20.DS18B20s(self)) |
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32 return self |
| 141 | 33 |
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34 def __exit__(self, exc_type, exc_value, traceback): |
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35 L("Exiting, cleanup handler"); |
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36 self.fridge.off() |
| 141 | 37 |
| 145 | 38 def run(self): |
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39 |
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40 if self.fridge is None: |
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41 raise Exception("Tempserver.run() must be within 'with Tempserver() as server'") |
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42 |
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43 # XXX do these go here or in __enter_() ? |
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44 self.start_time = self.now() |
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45 self.fridge.start() |
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46 self.sensors.start() |
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47 |
| 145 | 48 # won't return. |
| 49 while True: | |
| 157 | 50 try: |
| 51 gevent.sleep(60) | |
| 52 except KeyboardInterrupt: | |
| 53 break | |
| 145 | 54 |
| 55 def now(self): | |
| 56 return utils.monotonic_time() | |
| 57 | |
| 144 | 58 def set_sensors(self, sensors): |
| 148 | 59 if hasattr(self, 'sensors'): |
| 144 | 60 self.sensors.kill() |
| 61 self.sensors = sensors | |
| 62 self.wort_name = sensors.wort_name() | |
| 63 self.fridge_name = sensors.fridge_name() | |
| 141 | 64 |
| 65 def take_readings(self): | |
| 66 ret = self.readings | |
| 67 self.readings = [] | |
| 68 return ret | |
| 69 | |
| 70 def pushfront(self, readings): | |
| 71 """ used if a caller of take_readings() fails """ | |
| 72 self.readings = pushback + self.readings | |
| 73 | |
| 144 | 74 # a reading is a map of {sensorname: value}. temperatures |
| 75 # are float degrees | |
| 141 | 76 def add_reading(self, reading): |
| 77 """ adds a reading at the current time """ | |
| 155 | 78 D("add_reading(%s)" % str(reading)) |
| 145 | 79 self.readings.append( (reading, self.now())) |
| 144 | 80 self.current = (reading.get(self.wort_name, None), |
| 81 reading.get(self.fridge_name, None)) | |
| 141 | 82 |
| 83 def current_temps(self): | |
| 144 | 84 """ returns (wort_temp, fridge_temp) tuple """ |
| 148 | 85 return self.current |
| 145 | 86 |
| 87 def setup_logging(): | |
| 88 logging.basicConfig(format='%(asctime)s %(message)s', | |
| 89 datefmt='%m/%d/%Y %I:%M:%S %p', | |
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90 level=logging.DEBUG) |
| 145 | 91 |
| 92 def main(): | |
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93 setup_logging() |
| 145 | 94 |
| 95 if '--daemon' in sys.argv: | |
| 96 utils.cheap_daemon() | |
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97 with Tempserver() as server: |
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working better. logging works properly, cleanup fridge.off() happens.
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parents:
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98 server.run() |
| 145 | 99 |
| 100 if __name__ == '__main__': | |
| 101 main() |