annotate web/log.py @ 211:59379b2bd056

key fingerprints are case- and whitespace-insensitive. add some comments
author Matt Johnston <matt@ucc.asn.au>
date Thu, 26 Jun 2014 23:02:23 +0800
parents 3f403e22c2e3
children efb5cad2e98b
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1 # -*- coding: utf-8 -*-
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2 #:vim:et:ts=4:sts=4:sw=4:
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3 import rrdtool
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4 import os
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5 import os.path
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6 import sys
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7 import glob
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8 import hashlib
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9 import tempfile
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10 import time
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11 import syslog
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12 import sqlite3
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13 import traceback
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14 import datetime
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15 import struct
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16 import binascii
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17 import json
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18 import subprocess
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19 from colorsys import hls_to_rgb
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20
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21 import config
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22 import atomicfile
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23
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24 def sensor_rrd_path(s):
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25 return '%s/sensor_%s.rrd' % (config.DATA_PATH, str(s))
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26
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27 # returns (path, sensor_name) tuples
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28 def all_sensors():
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29 return [(r, os.path.basename(r[:-4]))
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30 for r in glob.glob('%s/*.rrd' % config.DATA_PATH)]
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31
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32 def create_rrd(sensor_id):
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33 # start date of 10 seconds into 1970 is used so that we can
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34 # update with prior values straight away.
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35 if 'voltage' in sensor_id:
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36 args = [
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37 '--step', '3600',
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38 'DS:temp:GAUGE:7200:1:10',
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39 'RRA:AVERAGE:0.5:1:87600']
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40 elif 'fridge_on' in sensor_id:
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41 args = [
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42 '--step', '300',
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43 'DS:temp:GAUGE:600:-100:500',
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44 'RRA:LAST:0.5:1:1051200']
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45 else:
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46 args = [
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47 '--step', '300',
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48 'DS:temp:GAUGE:600:-100:500',
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49 'RRA:AVERAGE:0.5:1:1051200']
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50
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51 print>>sys.stderr, sensor_rrd_path(sensor_id)
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52
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53 rrdtool.create(sensor_rrd_path(sensor_id),
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54 '--start', 'now-60d',
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55 *args)
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56
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57 # stolen from viewmtn, stolen from monotone-viz
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58 def colour_from_string(str):
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59 def f(off):
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60 return ord(hashval[off]) / 256.0
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61 hashval = hashlib.sha1(str).digest()
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62 hue = f(5)
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63 li = f(1) * 0.15 + 0.55
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64 sat = f(2) * 0.5 + .5
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65 return ''.join(["%.2x" % int(x * 256) for x in hls_to_rgb(hue, li, sat)])
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66
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67 def graph_png(start, length):
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68 os.environ['MATT_PNG_BODGE_COMPRESS'] = '4'
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69 os.environ['MATT_PNG_BODGE_FILTER'] = 'paeth'
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70 rrds = all_sensors()
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71
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72 graph_args = []
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73 have_volts = False
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74
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75 ## volts = temp * volts_div + volts_shift
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76 #volts_div = 10
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77 #volts_shift = 2
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78 volts_div = 1
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79 volts_shift = 0
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80
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81 volts_mult = 1.0/volts_div
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82
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83 # (title, sensorline) pairs.
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84 sensor_lines = []
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85
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86 wort_sensor = None
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87 fridge_sensor = None
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88 for n, (rrdfile, sensor) in enumerate(rrds):
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89 unit = None
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90 if 'avrtemp' in sensor:
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91 continue
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92 if 'voltage' in sensor:
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93 have_volts = True
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94 vname = 'scalevolts'
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95 graph_args.append('DEF:%(vname)s=%(rrdfile)s:temp:AVERAGE:step=3600' % locals())
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96 unit = 'V'
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97 elif 'fridge_on' in sensor:
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98 vname = 'fridge_on'
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99 graph_args.append('DEF:raw%(vname)s=%(rrdfile)s:temp:LAST' % locals())
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100 graph_args.append('CDEF:%(vname)s=raw%(vname)s,-0.2,*,3,+' % locals())
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101 else:
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102 vname = 'temp%d' % n
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103 graph_args.append('DEF:raw%(vname)s=%(rrdfile)s:temp:AVERAGE' % locals())
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104 # limit max temp to 50
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105 graph_args.append('CDEF:%(vname)s=raw%(vname)s,38,GT,UNKN,raw%(vname)s,%(volts_mult)f,*,%(volts_shift)f,+,IF' % locals())
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106 unit = '<span face="Liberation Serif">ยบ</span>C'
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107
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108 format_last_value = None
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109 if unit:
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110 try:
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111 last_value = float(rrdtool.info(rrdfile)['ds[temp].last_ds'])
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112 format_last_value = ('%f' % last_value).rstrip('0').rstrip('.') + unit
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113 except ValueError:
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114 pass
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115 width = config.LINE_WIDTH
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116 legend = config.SENSOR_NAMES.get(sensor, sensor)
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117 colour = config.SENSOR_COLOURS.get(legend, colour_from_string(sensor))
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118 if format_last_value:
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119 print_legend = '%s (%s)' % (legend, format_last_value)
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120 else:
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121 print_legend = legend
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122 sensor_lines.append( (legend, 'LINE%(width)f:%(vname)s#%(colour)s:%(print_legend)s' % locals()) )
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123 if legend == 'Wort':
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124 wort_sensor = vname
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125 elif legend == 'Fridge':
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126 fridge_sensor = vname
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127
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128 # calculated bits
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129 colour = '000000'
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130 print_legend = 'Heat'
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131 graph_args.append('CDEF:wortdel=%(wort_sensor)s,PREV(%(wort_sensor)s),-' % locals())
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132 graph_args.append('CDEF:tempdel=%(wort_sensor)s,%(fridge_sensor)s,-' % locals())
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133 graph_args.append('CDEF:fermheat=wortdel,80,*,tempdel,0.9,*,+' % locals())
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134 graph_args.append('CDEF:trendfermheat=fermheat,7200,TRENDNAN' % locals())
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135 graph_args.append('CDEF:limitfermheat=trendfermheat,5,+,11,MIN,2,MAX' % locals())
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136 graph_args.append('LINE0.5:limitfermheat#%(colour)s:%(print_legend)s' % locals())
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137
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138 # lines are done afterwards so they can be layered
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139 sensor_lines.sort(key = lambda (legend, line): "Wort" in legend)
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140 graph_args += (line for (legend, line) in sensor_lines)
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141
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142 print>>sys.stderr, '\n'.join(graph_args)
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143
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144
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145 end = int(start+length)
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146 start = int(start)
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147
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148 tempf = tempfile.NamedTemporaryFile()
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diff changeset
149 dateformat = '%H:%M:%S %Y-%m-%d'
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parents: 63
diff changeset
150 watermark = ("Now %s\t"
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parents: 63
diff changeset
151 "Start %s\t"
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parents: 63
diff changeset
152 "End %s" % (
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parents: 63
diff changeset
153 datetime.datetime.now().strftime(dateformat),
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parents: 63
diff changeset
154 datetime.datetime.fromtimestamp(start).strftime(dateformat),
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parents: 63
diff changeset
155 datetime.datetime.fromtimestamp(end).strftime(dateformat) ))
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parents: 63
diff changeset
156
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diff changeset
157 args = [tempf.name, '-s', str(start),
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diff changeset
158 '-e', str(end),
31
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parents: 29
diff changeset
159 '-w', str(config.GRAPH_WIDTH),
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parents: 29
diff changeset
160 '-h', str(config.GRAPH_HEIGHT),
29
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parents: 28
diff changeset
161 '--slope-mode',
31
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parents: 29
diff changeset
162 '--border', '0',
73
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parents: 71
diff changeset
163 # '--vertical-label', 'Voltage',
164
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parents: 159
diff changeset
164 '--y-grid', '%(volts_mult)f:1' % locals(),
71
7d243ba2dd39 swap the left and right scales, kind of clunky
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parents: 69
diff changeset
165 '--dynamic-labels',
56
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parents: 49
diff changeset
166 '--grid-dash', '1:0',
77
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parents: 75
diff changeset
167 '--zoom', str(config.ZOOM),
56
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parents: 49
diff changeset
168 '--color', 'GRID#00000000',
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parents: 49
diff changeset
169 '--color', 'MGRID#aaaaaa',
31
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parents: 29
diff changeset
170 '--color', 'BACK#ffffff',
67
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parents: 63
diff changeset
171 '--disable-rrdtool-tag',
78
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parents: 77
diff changeset
172 '--pango-markup',
67
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parents: 63
diff changeset
173 '--watermark', watermark,
31
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parents: 29
diff changeset
174 '--imgformat', 'PNG'] \
29
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parents: 28
diff changeset
175 + graph_args
67
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parents: 63
diff changeset
176 args += ['--font', 'DEFAULT:12:%s' % config.GRAPH_FONT]
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diff changeset
177 args += ['--font', 'WATERMARK:10:%s' % config.GRAPH_FONT]
61
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parents: 56
diff changeset
178 if have_volts:
164
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parents: 159
diff changeset
179 volts_shift_div = volts_div * volts_shift
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parents: 159
diff changeset
180 args += ['--right-axis', '%(volts_div)f:-%(volts_shift_div)f' % locals(),
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parents: 159
diff changeset
181 # '--right-axis-format', '%.0lf',
73
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parents: 71
diff changeset
182 # '--right-axis-label', 'Temperature'
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diff changeset
183 ]
61
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diff changeset
184
191
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parents: 185
diff changeset
185 #print>>sys.stderr, ' '.join("'%s'" % s for s in args)
29
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parents: 28
diff changeset
186 rrdtool.graph(*args)
104
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diff changeset
187 #return tempf
29
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diff changeset
188 return tempf.read()
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parents: 28
diff changeset
189
146
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diff changeset
190 def validate_value(m):
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parents: 137
diff changeset
191 if m == 85:
159
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parents: 146
diff changeset
192 return 'U'
146
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diff changeset
193 else:
159
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parents: 146
diff changeset
194 return '%f' % m
125
397ac5c079bf avoid bad values
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parents: 104
diff changeset
195
146
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diff changeset
196 def sensor_update(sensor_id, measurements):
27
dbbd503119ba Add some web server handling
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parents:
diff changeset
197 try:
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parents:
diff changeset
198 open(sensor_rrd_path(sensor_id))
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parents:
diff changeset
199 except IOError, e:
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parents:
diff changeset
200 create_rrd(sensor_id)
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parents:
diff changeset
201
37
8da0fdadc8d7 - Getting there, update has problems
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parents: 33
diff changeset
202 if measurements:
146
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parents: 137
diff changeset
203 values = ['%d:%s' % (t, validate_value(m)) for (t, m) in measurements]
27
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parents:
diff changeset
204
37
8da0fdadc8d7 - Getting there, update has problems
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parents: 33
diff changeset
205 rrdfile = sensor_rrd_path(sensor_id)
40
9b5b202129c3 main.c:
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parents: 37
diff changeset
206 # XXX what to do here when it fails...
49
206294a354a7 update values one at a time, ignore failure
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parents: 45
diff changeset
207 for v in values:
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parents: 45
diff changeset
208 try:
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parents: 45
diff changeset
209 rrdtool.update(rrdfile, v)
63
43ec670f1b75 UI tweaks
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parents: 61
diff changeset
210 except rrdtool.error, e:
104
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parents: 103
diff changeset
211 print>>sys.stderr, "Bad rrdtool update '%s': %s" % (v, str(e))
49
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parents: 45
diff changeset
212 traceback.print_exc(file=sys.stderr)
33
024f5571df8c - Debug log file for server
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parents: 32
diff changeset
213
37
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parents: 33
diff changeset
214 # be paranoid
104
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parents: 103
diff changeset
215 #f = file(rrdfile)
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parents: 103
diff changeset
216 #os.fsync(f.fileno())
27
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parents:
diff changeset
217
103
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parents: 101
diff changeset
218 def debug_file(mode='r'):
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parents: 101
diff changeset
219 return open('%s/debug.log' % config.DATA_PATH, mode)
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parents: 101
diff changeset
220
146
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diff changeset
221 def record_debug(params):
103
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parents: 101
diff changeset
222 f = debug_file('a+')
37
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parents: 33
diff changeset
223 f.write('===== %s =====\n' % time.strftime('%a, %d %b %Y %H:%M:%S'))
159
683cfd134f6a Fix the updated json web code to work
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parents: 146
diff changeset
224 json.dump(params, f, sort_keys=True, indent=4)
33
024f5571df8c - Debug log file for server
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parents: 32
diff changeset
225 f.flush()
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parents: 32
diff changeset
226 return f
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parents: 32
diff changeset
227
103
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parents: 101
diff changeset
228 def tail_debug_log():
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parents: 101
diff changeset
229 f = debug_file()
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parents: 101
diff changeset
230 f.seek(0, 2)
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parents: 101
diff changeset
231 size = f.tell()
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parents: 101
diff changeset
232 f.seek(max(0, size-30000))
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parents: 101
diff changeset
233 return '\n'.join(l.strip() for l in f.readlines()[-400:])
ef59da811986 add debug url
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parents: 101
diff changeset
234
75
ca08442635ca report raw ds18b20 values instead
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parents: 73
diff changeset
235 def convert_ds18b20_12bit(reading):
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parents: 73
diff changeset
236 value = struct.unpack('>h', binascii.unhexlify(reading))[0]
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parents: 73
diff changeset
237 return value * 0.0625
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parents: 73
diff changeset
238
94
229b740a607f use the remainder of times
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parents: 88
diff changeset
239 def time_rem(name, entries):
229b740a607f use the remainder of times
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parents: 88
diff changeset
240 val_ticks = int(entries[name])
95
fd9cfa6829fd fix rem calculation
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parents: 94
diff changeset
241 val_rem = int(entries['%s_rem' % name])
99
1a88bb989afb fix off-by-one in remainder code
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parents: 95
diff changeset
242 tick_wake = int(entries['tick_wake']) + 1
94
229b740a607f use the remainder of times
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parents: 88
diff changeset
243 tick_secs = int(entries['tick_secs'])
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parents: 88
diff changeset
244 return val_ticks + float(val_rem) * tick_secs / tick_wake
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parents: 88
diff changeset
245
191
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parents: 185
diff changeset
246 def write_current_params(current_params):
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parents: 185
diff changeset
247 out = {}
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parents: 185
diff changeset
248 out['params'] = current_params
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parents: 185
diff changeset
249 out['time'] = time.time()
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parents: 185
diff changeset
250 atomicfile.AtomicFile("%s/current_params.txt" % config.DATA_PATH).write(
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parents: 185
diff changeset
251 json.dumps(out, sort_keys=True, indent=4)+'\n')
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parents: 185
diff changeset
252
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parents: 185
diff changeset
253 def read_current_params():
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parents: 185
diff changeset
254 p = atomicfile.AtomicFile("%s/current_params.txt" % config.DATA_PATH).read()
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parents: 185
diff changeset
255 dat = json.loads(p)
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parents: 185
diff changeset
256 return dat['params']
8318d50d766d gets current params
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parents: 185
diff changeset
257
146
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diff changeset
258 def parse(params):
104
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parents: 103
diff changeset
259
7f3fc0980df1 - few more web tweaks. don't fsync, it's slow.
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parents: 103
diff changeset
260 start_time = time.time()
33
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parents: 32
diff changeset
261
146
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parents: 137
diff changeset
262 debugf = record_debug(params)
27
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parents:
diff changeset
263
146
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parents: 137
diff changeset
264 remote_now = params['now']
27
dbbd503119ba Add some web server handling
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parents:
diff changeset
265
146
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parents: 137
diff changeset
266 time_diff = start_time - remote_now
27
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parents:
diff changeset
267
146
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parents: 137
diff changeset
268 # readings is [ ({sensorname: value, ...}, time), ... ]
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parents: 137
diff changeset
269 readings = params['readings']
27
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parents:
diff changeset
270
146
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parents: 137
diff changeset
271 # measurements is {sensorname: [(time, value), ...], ...}
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parents: 137
diff changeset
272 measurements = {}
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parents: 137
diff changeset
273 for rs, t in readings:
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parents: 137
diff changeset
274 real_t = t + time_diff
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parents: 137
diff changeset
275 for s, v in rs.iteritems():
159
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parents: 146
diff changeset
276 measurements.setdefault(s, []).append((real_t, v))
61
62112fc2af21 sort out voltage logging
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parents: 56
diff changeset
277
146
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parents: 137
diff changeset
278 # one-off measurements here
191
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parents: 185
diff changeset
279 current_params = params['current_params']
146
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parents: 137
diff changeset
280 measurements['fridge_on'] = [ (time.time(), params['fridge_on']) ]
191
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parents: 185
diff changeset
281 measurements['fridge_setpoint'] = [ (time.time(), current_params['fridge_setpoint']) ]
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parents: 185
diff changeset
282
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parents: 185
diff changeset
283 write_current_params(current_params)
126
6a9419ac8f77 ui tweaks, add fridge values
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parents: 125
diff changeset
284
146
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parents: 137
diff changeset
285 for s, vs in measurements.iteritems():
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parents: 137
diff changeset
286 sensor_update(s, vs)
33
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parents: 32
diff changeset
287
104
7f3fc0980df1 - few more web tweaks. don't fsync, it's slow.
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parents: 103
diff changeset
288 timedelta = time.time() - start_time
159
683cfd134f6a Fix the updated json web code to work
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parents: 146
diff changeset
289 debugf.write("Updated sensors in %.2f secs\n" % timedelta)
33
024f5571df8c - Debug log file for server
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parents: 32
diff changeset
290 debugf.flush()
182
e731c0d30b09 set nearly working
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
291
194
4fa8cbf31065 working kinda
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parents: 191
diff changeset
292 _FIELD_DEFAULTS = {
200
1d8a8bd2ea78 Fridge setpoint as a float value
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parents: 194
diff changeset
293 'fridge_setpoint': 16.0,
194
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parents: 191
diff changeset
294 'fridge_difference': 0.2,
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parents: 191
diff changeset
295 'overshoot_delay': 720, # 12 minutes
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parents: 191
diff changeset
296 'overshoot_factor': 1, # ยบC
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parents: 191
diff changeset
297 'disabled': False,
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parents: 191
diff changeset
298 'nowort': True,
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parents: 191
diff changeset
299 'fridge_range_lower': 3,
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parents: 191
diff changeset
300 'fridge_range_upper': 3,
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301 }
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302
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303 def get_params():
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304
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305 r = []
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306
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307 vals = read_current_params()
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308
182
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309 for k, v in _FIELD_DEFAULTS.iteritems():
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310 n = {'name': k, 'value': type(v)(vals[k])}
182
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311 if type(v) is bool:
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312 kind = 'yesno'
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313 else:
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314 kind = 'number'
183
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315 if k == 'overshoot_delay':
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316 n['unit'] = ' sec'
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317 n['amount'] = 60
184
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318 n['digits'] = 0;
183
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319 else:
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320 n['unit'] = 'ยบ'
184
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321 n['amount'] = 0.1;
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322 n['digits'] = 1;
182
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323 n['kind'] = kind
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324 n['title'] = k
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325 r.append(n)
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326
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327 return json.dumps(r, sort_keys=True, indent=4)
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328
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329 def send_params(params):
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330 # 'templog_receive' is ignored due to authorized_keys
211
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331 # restrictions. the rpi has authorized_keys with
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332 # command="/home/matt/templog/venv/bin/python /home/matt/templog/py/receive.py",no-pty,no-port-forwarding,no-x11-forwarding,no-agent-forwarding ssh-rsa AAAAB3NzaC....
194
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333 args = [config.SSH_PROG, '-i', config.SSH_KEYFILE,
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334 config.SSH_HOST, 'templog_receive']
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335 try:
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336 p = subprocess.Popen(args, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
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337 (out, err) = p.communicate(json.dumps(params))
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338 except OSError, e:
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339 print>>sys.stderr, e
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340 return "Failed update"
185
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341
194
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342 if 'Good Update' in out:
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343 return True
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344
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345 print>>sys.stderr, "Strange return from update:"
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346 print>>sys.stderr, out
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347 return "Unexpected update result"
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348
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349 def same_type(a, b):
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350 ta = type(a)
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351 tb = type(b)
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352
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353 if ta == int:
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354 ta = float
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355 if tb == int:
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356 tb = float
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357
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358 return (ta == tb)
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359
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360 def update_params(p):
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361 params = {}
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362 for i in p:
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363 params[i['name']] = i['value']
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364
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365 if params.viewkeys() != _FIELD_DEFAULTS.viewkeys():
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366 diff = params.viewkeys() ^ _FIELD_DEFAULTS.viewkeys()
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367 return "Key mismatch, difference %s" % str(diff)
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368
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369 for k, v in params.items():
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370 if not same_type(v, _FIELD_DEFAULTS[k]):
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371 return "Bad type for %s, %s vs %s" % (k , type(v), type(_FIELD_DEFAULTS[k]))
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372
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373 ret = send_params(params)
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374 if ret is not True:
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375 return "Failed sending params: %s" % ret
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376
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377 return True
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378
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379
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380