Mercurial > code > home > repos > homeauto

annotate service/piNode/piNode.py @ 1031:9328df09f679

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piNode uses new graph SSE code Ignore-this: beb50f3b03ff9a02b66f81c9946455b3 darcs-hash:ad393b0d8704551cf7cb5a78097196bc902983ed
author drewp <drewp@bigasterisk.com>
date Tue, 26 Jan 2016 03:34:05 -0800
parents 01e443398336
children 0aa54404df19
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 from __future__ import division
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2 import sys, logging, socket, json, time
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3 import cyclone.web
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4 from rdflib import Namespace, URIRef, Literal, Graph, RDF, ConjunctiveGraph
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5 from rdflib.parser import StringInputSource
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6 from twisted.internet import reactor, task
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7 from docopt import docopt
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8 logging.basicConfig(level=logging.DEBUG)
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9 sys.path.append("/opt/homeauto_lib")
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10 from patchablegraph import PatchableGraph, CycloneGraphHandler, CycloneGraphEventsHandler
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11 from light9.rdfdb.rdflibpatch import inContext
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12 from light9.rdfdb.patch import Patch
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13 sys.path.append('/opt/pigpio')
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14 try:
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15 import pigpio
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16 except ImportError:
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17 class pigpio(object):
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18 @staticmethod
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19 def pi():
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20 return None
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21
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22 import devices
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23
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24 # from /my/proj/room
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25 from carbondata import CarbonClient
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26
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27 log = logging.getLogger()
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28 logging.getLogger('serial').setLevel(logging.WARN)
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29 ROOM = Namespace('http://projects.bigasterisk.com/room/')
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30 HOST = Namespace('http://bigasterisk.com/ruler/host/')
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31
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32 hostname = socket.gethostname()
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33
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34 class Config(object):
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35 def __init__(self, masterGraph):
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36 self.graph = ConjunctiveGraph()
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37 log.info('read config')
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38 self.graph.parse('config.n3', format='n3')
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39 self.graph.bind('', ROOM) # maybe working
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40 self.graph.bind('rdf', RDF)
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41 masterGraph.patch(Patch(addGraph=self.graph))
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42
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43 class Board(object):
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44 """similar to arduinoNode.Board but without the communications stuff"""
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45 def __init__(self, graph, masterGraph, uri):
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46 self.graph, self.uri = graph, uri
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47 self.ctx = ROOM['pi/%s' % hostname]
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48 self.masterGraph = masterGraph
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49 self.masterGraph.patch(Patch(addQuads=self.staticStmts()))
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50 self.pi = pigpio.pi()
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51 self._devs = devices.makeDevices(graph, self.uri, self.pi)
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52 log.debug('found %s devices', len(self._devs))
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53 self._statementsFromInputs = {} # input device uri: latest statements
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54 self._carbon = CarbonClient(serverHost='bang')
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55
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56 def startPolling(self):
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57 task.LoopingCall(self._poll).start(.5)
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58
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59 def _poll(self):
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60 for i in self._devs:
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61 prev = inContext(self._statementsFromInputs.get(i.uri, []), self.ctx)
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62 new = self._statementsFromInputs[i.uri] = i.poll()
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63 new = inContext(new, self.ctx)
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64 self.masterGraph.patch(Patch.fromDiff(prev, new))
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65 self._exportToGraphite()
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66
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67 def outputStatements(self, stmts):
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68 unused = set(stmts)
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69 for dev in self._devs:
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70 stmtsForDev = []
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71 for pat in dev.outputPatterns():
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72 if [term is None for term in pat] != [False, False, True]:
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73 raise NotImplementedError
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74 for stmt in stmts:
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75 if stmt[:2] == pat[:2]:
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76 stmtsForDev.append(stmt)
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77 unused.discard(stmt)
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78 if stmtsForDev:
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79 log.info("output goes to action handler for %s" % dev.uri)
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80 dev.sendOutput(stmtsForDev)
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81 log.info("success")
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82 if unused:
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83 log.warn("No devices cared about these statements:")
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84 for s in unused:
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85 log.warn(repr(s))
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86
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87 # needs merge with arduinoNode.py
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88 def _exportToGraphite(self):
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89 # note this is writing way too often- graphite is storing at a lower res
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90 now = time.time()
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91 # 20 sec is not precise; just trying to reduce wifi traffic
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92 if getattr(self, 'lastGraphiteExport', 0) + 20 > now:
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93 return
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94 self.lastGraphiteExport = now
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95 log.debug('graphite export:')
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96 # objects of these statements are suitable as graphite values.
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97 graphitePredicates = {ROOM['temperatureF']}
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98 # bug: one sensor can have temp and humid- this will be ambiguous
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99 for s, graphiteName in self.graph.subject_objects(ROOM['graphiteName']):
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100 for group in self._statementsFromInputs.values():
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101 for stmt in group:
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102 if stmt[0] == s and stmt[1] in graphitePredicates:
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103 log.debug(' sending %s -> %s', stmt[0], graphiteName)
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104 self._carbon.send(graphiteName, stmt[2].toPython(), now)
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105
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106 def staticStmts(self):
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107 return [(HOST[socket.gethostname()], ROOM['connectedTo'], self.uri, self.ctx)]
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108
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109 def currentGraph(self):
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110 g = Graph()
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111
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112 for s in self.staticStmts():
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113 g.add(s[:3])
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114
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115 for si in self._statementsFromInputs.values():
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116 for s in si:
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117 g.add(s)
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118 return g
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119
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120 def description(self):
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121 """for web page"""
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122 return {
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123 'uri': self.uri,
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124 'devices': [d.description() for d in self._devs],
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125 'graph': 'http://sticker:9059/graph', #todo
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126 }
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127
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128 def rdfGraphBody(body, headers):
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129 g = Graph()
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130 g.parse(StringInputSource(body), format='nt')
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131 return g
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132
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133 class OutputPage(cyclone.web.RequestHandler):
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134 def put(self):
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135 arg = self.request.arguments
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136 if arg.get('s') and arg.get('p'):
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137 subj = URIRef(arg['s'][-1])
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138 pred = URIRef(arg['p'][-1])
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139 turtleLiteral = self.request.body
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140 try:
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141 obj = Literal(float(turtleLiteral))
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142 except ValueError:
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143 obj = Literal(turtleLiteral)
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144 stmt = (subj, pred, obj)
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145 else:
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146 g = rdfGraphBody(self.request.body, self.request.headers)
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147 assert len(g) == 1, len(g)
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148 stmt = g.triples((None, None, None)).next()
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149
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150 self.settings.board.outputStatements([stmt])
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151
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152 class Boards(cyclone.web.RequestHandler):
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153 def get(self):
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154 self.set_header('Content-type', 'application/json')
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155 self.write(json.dumps({
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156 'host': socket.gethostname(),
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157 'boards': [self.settings.board.description()]
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158 }, indent=2))
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159
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160 def main():
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161 arg = docopt("""
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162 Usage: piNode.py [options]
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163
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164 -v Verbose
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165 """)
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166 log.setLevel(logging.WARN)
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167 if arg['-v']:
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168 from twisted.python import log as twlog
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169 twlog.startLogging(sys.stdout)
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170
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171 log.setLevel(logging.DEBUG)
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172
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173 masterGraph = PatchableGraph()
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174 config = Config(masterGraph)
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175
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176 thisHost = Literal(socket.gethostname())
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177 for row in config.graph.query(
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178 'SELECT ?board WHERE { ?board a :PiBoard; :hostname ?h }',
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179 initBindings=dict(h=thisHost)):
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180 thisBoard = row.board
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181 break
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182 else:
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183 raise ValueError("config had no board for :hostname %r" % thisHost)
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184
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185 log.info("found config for board %r" % thisBoard)
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186 board = Board(config.graph, masterGraph, thisBoard)
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187 board.startPolling()
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188
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189 reactor.listenTCP(9059, cyclone.web.Application([
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190 (r"/()", cyclone.web.StaticFileHandler, {
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191 "path": "../arduinoNode/static", "default_filename": "index.html"}),
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192 (r'/static/(.*)', cyclone.web.StaticFileHandler, {"path": "../arduinoNode/static"}),
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193 (r"/graph", CycloneGraphHandler, {'masterGraph': masterGraph}),
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194 (r"/graph/events", CycloneGraphEventsHandler, {'masterGraph': masterGraph}),
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195 (r'/output', OutputPage),
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196 (r'/boards', Boards),
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197 #(r'/dot', Dot),
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198 ], config=config, board=board, debug=arg['-v']), interface='::')
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199 reactor.run()
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200
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201 main()