Mercurial > templog
annotate py/params.py @ 518:0b5ff341d124
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 | de4abcbe8f46 |
| children | d9e81a563923 |
| rev | line source |
|---|---|
| 444 | 1 # -*- coding: utf-8 -*- |
| 2 import collections | |
| 3 import json | |
| 456 | 4 import signal |
| 459 | 5 import StringIO |
| 456 | 6 |
| 7 import gevent | |
| 8 | |
| 444 | 9 import config |
| 447 | 10 from utils import W,L,E,EX |
| 444 | 11 |
| 12 _FIELD_DEFAULTS = { | |
| 13 'fridge_setpoint': 16, | |
| 14 'fridge_difference': 0.2, | |
| 15 'overshoot_delay': 720, # 12 minutes | |
| 16 'overshoot_factor': 1, # ºC | |
|
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1eb68df9f8ab
Add daemon mode with locking, add "disabled" parameter
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
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17 'disabled': False, |
| 467 | 18 'nowort': False, |
|
469
de4abcbe8f46
make fridge air range a parameter
Matt Johnston <matt@ucc.asn.au>
parents:
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diff
changeset
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19 'fridge_range_lower': 3, |
|
de4abcbe8f46
make fridge air range a parameter
Matt Johnston <matt@ucc.asn.au>
parents:
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diff
changeset
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20 'fridge_range_upper': 3, |
| 444 | 21 } |
| 22 | |
| 23 class Params(dict): | |
| 24 class Error(Exception): | |
| 25 pass | |
| 26 | |
| 27 def __init__(self): | |
| 28 self.update(_FIELD_DEFAULTS) | |
| 29 | |
| 30 def __getattr__(self, k): | |
| 31 return self[k] | |
| 32 | |
| 33 def __setattr__(self, k, v): | |
| 34 # fail if we set a bad value | |
| 35 self[k] | |
| 36 self[k] = v | |
| 37 | |
| 38 def load(self, f = None): | |
| 39 if not f: | |
| 447 | 40 try: |
| 41 f = file(config.PARAMS_FILE, 'r') | |
| 42 except IOError, e: | |
| 43 W("Missing parameter file, using defaults. %s", e) | |
| 44 return | |
| 456 | 45 try: |
| 46 u = json.load(f) | |
| 47 except Exception, e: | |
| 48 raise self.Error(e) | |
| 49 | |
| 444 | 50 for k in u: |
|
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f2cca8062128
- use the fridge temperature for control too, keep it in a 6deg band
Matt Johnston <matt@ucc.asn.au>
parents:
461
diff
changeset
|
51 if k.startswith('_'): |
|
f2cca8062128
- use the fridge temperature for control too, keep it in a 6deg band
Matt Johnston <matt@ucc.asn.au>
parents:
461
diff
changeset
|
52 continue |
| 444 | 53 if k not in self: |
| 54 raise self.Error("Unknown parameter %s=%s in file '%s'" % (str(k), str(u[k]), getattr(f, 'name', '???'))) | |
| 55 self.update(u) | |
| 56 | |
| 459 | 57 L("Loaded parameters") |
| 58 L(self.save_string()) | |
| 59 | |
| 60 | |
| 444 | 61 def save(self, f = None): |
| 62 if not f: | |
| 63 f = file(config.PARAMS_FILE, 'w') | |
| 64 json.dump(self, f, sort_keys=True, indent=4) | |
| 454 | 65 f.write('\n') |
| 444 | 66 f.flush() |
| 456 | 67 |
| 459 | 68 def save_string(self): |
| 69 s = StringIO.StringIO() | |
| 70 self.save(s) | |
| 71 return s.getvalue() |