Mercurial > templog
annotate py/params.py @ 252:3e6f82347eab
uwsgi bits
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Sat, 06 Jun 2015 15:34:03 +0800 |
| parents | 19569cb5ed46 |
| children | 0a1b642e3086 |
| rev | line source |
|---|---|
| 145 | 1 # -*- coding: utf-8 -*- |
| 2 import collections | |
| 3 import json | |
| 157 | 4 import signal |
| 230 | 5 import io |
| 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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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 | |
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36 def _do_load(self, f): |
| 157 | 37 try: |
| 38 u = json.load(f) | |
| 230 | 39 except Exception as e: |
| 157 | 40 raise self.Error(e) |
| 41 | |
| 145 | 42 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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43 if k.startswith('_'): |
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44 continue |
| 145 | 45 if k not in self: |
| 46 raise self.Error("Unknown parameter %s=%s in file '%s'" % (str(k), str(u[k]), getattr(f, 'name', '???'))) | |
| 47 self.update(u) | |
| 48 | |
| 160 | 49 L("Loaded parameters") |
| 50 L(self.save_string()) | |
| 51 | |
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52 def load(self, f = None): |
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53 if f: |
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54 return self._do_load(f) |
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55 else: |
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56 with open(config.PARAMS_FILE, 'r') as f: |
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57 try: |
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58 return self._do_load(f) |
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59 except IOError as e: |
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60 W("Missing parameter file, using defaults. %s" % str(e)) |
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61 return |
| 160 | 62 |
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63 def _do_save(self, f): |
| 145 | 64 json.dump(self, f, sort_keys=True, indent=4) |
| 155 | 65 f.write('\n') |
| 145 | 66 f.flush() |
| 157 | 67 |
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68 def save(self, f = None): |
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69 if f: |
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parents:
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70 return self._do_save(f) |
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parents:
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71 else: |
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parents:
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72 with file(config.PARAMS_FILE, 'w') as f: |
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parents:
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73 return self._do_save(f) |
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parents:
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74 |
| 160 | 75 def save_string(self): |
| 230 | 76 s = io.StringIO() |
| 160 | 77 self.save(s) |
| 78 return s.getvalue() |