Mercurial > templog
annotate py/params.py @ 228:d9e81a563923
porting to asyncio
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Fri, 20 Mar 2015 20:12:25 +0800 |
| parents | 16a83e2c97a0 |
| children | 185621f47040 |
| rev | line source |
|---|---|
| 145 | 1 # -*- coding: utf-8 -*- |
| 2 import collections | |
| 3 import json | |
| 157 | 4 import signal |
| 160 | 5 import StringIO |
| 157 | 6 |
| 145 | 7 import config |
| 148 | 8 from utils import W,L,E,EX |
| 145 | 9 |
| 10 _FIELD_DEFAULTS = { | |
| 11 'fridge_setpoint': 16, | |
| 12 'fridge_difference': 0.2, | |
| 13 'overshoot_delay': 720, # 12 minutes | |
| 14 'overshoot_factor': 1, # ºC | |
|
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Add daemon mode with locking, add "disabled" parameter
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15 'disabled': False, |
| 168 | 16 'nowort': False, |
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make fridge air range a parameter
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17 'fridge_range_lower': 3, |
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make fridge air range a parameter
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18 'fridge_range_upper': 3, |
| 145 | 19 } |
| 20 | |
| 21 class Params(dict): | |
| 22 class Error(Exception): | |
| 23 pass | |
| 24 | |
| 25 def __init__(self): | |
| 26 self.update(_FIELD_DEFAULTS) | |
| 27 | |
| 28 def __getattr__(self, k): | |
| 29 return self[k] | |
| 30 | |
| 31 def __setattr__(self, k, v): | |
| 32 # fail if we set a bad value | |
| 33 self[k] | |
| 34 self[k] = v | |
| 35 | |
| 36 def load(self, f = None): | |
| 37 if not f: | |
| 148 | 38 try: |
| 39 f = file(config.PARAMS_FILE, 'r') | |
| 40 except IOError, e: | |
| 41 W("Missing parameter file, using defaults. %s", e) | |
| 42 return | |
| 157 | 43 try: |
| 44 u = json.load(f) | |
| 45 except Exception, e: | |
| 46 raise self.Error(e) | |
| 47 | |
| 145 | 48 for k in u: |
|
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- use the fridge temperature for control too, keep it in a 6deg band
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49 if k.startswith('_'): |
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- use the fridge temperature for control too, keep it in a 6deg band
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parents:
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diff
changeset
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50 continue |
| 145 | 51 if k not in self: |
| 52 raise self.Error("Unknown parameter %s=%s in file '%s'" % (str(k), str(u[k]), getattr(f, 'name', '???'))) | |
| 53 self.update(u) | |
| 54 | |
| 160 | 55 L("Loaded parameters") |
| 56 L(self.save_string()) | |
| 57 | |
| 58 | |
| 145 | 59 def save(self, f = None): |
| 60 if not f: | |
| 61 f = file(config.PARAMS_FILE, 'w') | |
| 62 json.dump(self, f, sort_keys=True, indent=4) | |
| 155 | 63 f.write('\n') |
| 145 | 64 f.flush() |
| 157 | 65 |
| 160 | 66 def save_string(self): |
| 67 s = StringIO.StringIO() | |
| 68 self.save(s) | |
| 69 return s.getvalue() |