Mercurial > templog

annotate py/params.py @ 581:b4d6f1ae0b9e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
make overshoot_factor floating point add a proper error message for noparamsyet
author Matt Johnston <matt@ucc.asn.au>
date Sun, 29 Nov 2015 09:30:36 +0800
parents 54ef7f84487d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
444
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1 # -*- coding: utf-8 -*-
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
2 import collections
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
3 import json
456
3db3665af2e2 reload config on SIGHUP
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
4 import signal
551
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
5 import tempfile
556
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
6 import os
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
7 import binascii
456
3db3665af2e2 reload config on SIGHUP
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
8
444
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
9 import config
447
8fdf86ea41e7 few updates, seems to run
Matt Johnston <matt@ucc.asn.au>
parents: 444
diff changeset
10 from utils import W,L,E,EX
551
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
11 import utils
444
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
12
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
13 _FIELD_DEFAULTS = {
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
14 'fridge_setpoint': 16,
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
15 'fridge_difference': 0.2,
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
16 'overshoot_delay': 720, # 12 minutes
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
17 'overshoot_factor': 1, # ºC
461
1eb68df9f8ab Add daemon mode with locking, add "disabled" parameter
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
18 'disabled': False,
467
fa79666fb375 add nowort mode
Matt Johnston <matt@ucc.asn.au>
parents: 463
diff changeset
19 'nowort': False,
469
de4abcbe8f46 make fridge air range a parameter
Matt Johnston <matt@ucc.asn.au>
parents: 467
diff changeset
20 'fridge_range_lower': 3,
de4abcbe8f46 make fridge air range a parameter
Matt Johnston <matt@ucc.asn.au>
parents: 467
diff changeset
21 'fridge_range_upper': 3,
444
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
22 }
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
23
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
24 class Params(dict):
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
25 class Error(Exception):
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
26 pass
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
27
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
28 def __init__(self):
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
29 self.update(_FIELD_DEFAULTS)
556
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
30 self._set_epoch(None)
444
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
31
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
32 def __getattr__(self, k):
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
33 return self[k]
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
34
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
35 def __setattr__(self, k, v):
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
36 # fail if we set a bad value
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
37 self[k]
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
38 self[k] = v
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
39
556
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
40 def _set_epoch(self, epoch):
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
41 # since __setattr__ is overridden
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
42 object.__setattr__(self, '_epoch', epoch)
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
43
532
9b1d71310c83 better arg parser. seems close to ready
Matt Johnston <matt@ucc.asn.au>
parents: 530
diff changeset
44 def _do_load(self, f):
456
3db3665af2e2 reload config on SIGHUP
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
45 try:
556
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
46 u = utils.json_load_round_float(f.read())
529
5201f441bf4a run 2to3
Matt Johnston <matt@ucc.asn.au>
parents: 527
diff changeset
47 except Exception as e:
456
3db3665af2e2 reload config on SIGHUP
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
48 raise self.Error(e)
3db3665af2e2 reload config on SIGHUP
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
49
444
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
50 for k in u:
463
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
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
53 if k not in self:
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
54 raise self.Error("Unknown parameter %s=%s in file '%s'" % (str(k), str(u[k]), getattr(f, 'name', '???')))
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
55 self.update(u)
556
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
56 # new epoch, 120 random bits
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
57 self._set_epoch(binascii.hexlify(os.urandom(15)).decode())
444
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
58
459
c34083c078db uploader works
Matt Johnston <matt@ucc.asn.au>
parents: 456
diff changeset
59 L("Loaded parameters")
c34083c078db uploader works
Matt Johnston <matt@ucc.asn.au>
parents: 456
diff changeset
60 L(self.save_string())
c34083c078db uploader works
Matt Johnston <matt@ucc.asn.au>
parents: 456
diff changeset
61
532
9b1d71310c83 better arg parser. seems close to ready
Matt Johnston <matt@ucc.asn.au>
parents: 530
diff changeset
62 def load(self, f = None):
9b1d71310c83 better arg parser. seems close to ready
Matt Johnston <matt@ucc.asn.au>
parents: 530
diff changeset
63 if f:
9b1d71310c83 better arg parser. seems close to ready
Matt Johnston <matt@ucc.asn.au>
parents: 530
diff changeset
64 return self._do_load(f)
9b1d71310c83 better arg parser. seems close to ready
Matt Johnston <matt@ucc.asn.au>
parents: 530
diff changeset
65 else:
9b1d71310c83 better arg parser. seems close to ready
Matt Johnston <matt@ucc.asn.au>
parents: 530
diff changeset
66 with open(config.PARAMS_FILE, 'r') as f:
9b1d71310c83 better arg parser. seems close to ready
Matt Johnston <matt@ucc.asn.au>
parents: 530
diff changeset
67 try:
9b1d71310c83 better arg parser. seems close to ready
Matt Johnston <matt@ucc.asn.au>
parents: 530
diff changeset
68 return self._do_load(f)
9b1d71310c83 better arg parser. seems close to ready
Matt Johnston <matt@ucc.asn.au>
parents: 530
diff changeset
69 except IOError as e:
9b1d71310c83 better arg parser. seems close to ready
Matt Johnston <matt@ucc.asn.au>
parents: 530
diff changeset
70 W("Missing parameter file, using defaults. %s" % str(e))
9b1d71310c83 better arg parser. seems close to ready
Matt Johnston <matt@ucc.asn.au>
parents: 530
diff changeset
71 return
459
c34083c078db uploader works
Matt Johnston <matt@ucc.asn.au>
parents: 456
diff changeset
72
551
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
73 def get_epoch(self):
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
74 return self._epoch
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
75
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
76 def receive(self, params, epoch):
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
77 """ updates parameters from the server. does some validation,
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
78 writes config file to disk.
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
79 Returns True on success, False failure
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
80 """
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
81
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
82 if epoch != self._epoch:
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
83 return
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
84
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
85 def same_type(a, b):
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
86 ta = type(a)
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
87 tb = type(b)
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
88
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
89 if ta == int:
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
90 ta = float
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
91 if tb == int:
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
92 tb = float
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
93
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
94 return ta == tb
456
3db3665af2e2 reload config on SIGHUP
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
95
556
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
96 if self.keys() != params.keys():
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
97 diff = self.keys() ^ params.keys()
551
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
98 E("Mismatching params, %s" % str(diff))
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
99 return False
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
100
556
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
101 for k, v in params.items():
551
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
102 if not same_type(v, self[k]):
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
103 E("Bad type for %s" % k)
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
104 return False
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
105
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
106 dir = os.path.dirname(config.PARAMS_FILE)
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
107 try:
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
108 t = tempfile.NamedTemporaryFile(prefix='config',
561
54ef7f84487d actually update values
Matt Johnston <matt@ucc.asn.au>
parents: 556
diff changeset
109 mode='w+t', # NamedTemporaryFile is binary by default
551
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
110 dir = dir,
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
111 delete = False)
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
112
556
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
113 out = json.dumps(params, sort_keys=True, indent=4)+'\n'
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
114 t.write(out)
551
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
115 name = t.name
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
116 t.close()
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
117
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
118 os.rename(name, config.PARAMS_FILE)
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
119 except Exception as e:
556
c5f8375b12a2 long polling works
Matt Johnston <matt@ucc.asn.au>
parents: 551
diff changeset
120 EX("Problem: %s" % e)
551
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
121 return False
532
9b1d71310c83 better arg parser. seems close to ready
Matt Johnston <matt@ucc.asn.au>
parents: 530
diff changeset
122
561
54ef7f84487d actually update values
Matt Johnston <matt@ucc.asn.au>
parents: 556
diff changeset
123 self.update(params)
54ef7f84487d actually update values
Matt Johnston <matt@ucc.asn.au>
parents: 556
diff changeset
124 L("Received parameters")
54ef7f84487d actually update values
Matt Johnston <matt@ucc.asn.au>
parents: 556
diff changeset
125 L(self.save_string())
54ef7f84487d actually update values
Matt Johnston <matt@ucc.asn.au>
parents: 556
diff changeset
126 return True
54ef7f84487d actually update values
Matt Johnston <matt@ucc.asn.au>
parents: 556
diff changeset
127
459
c34083c078db uploader works
Matt Johnston <matt@ucc.asn.au>
parents: 456
diff changeset
128 def save_string(self):
551
9499bd2f344b long polling config updates
Matt Johnston <matt@ucc.asn.au>
parents: 532
diff changeset
129 return json.dumps(self, sort_keys=True, indent=4)