Mercurial > code > home > repos > homeauto
annotate service/piNode/piNode.py @ 258:0c4ec87d4498
try a speedup for raspi
Ignore-this: 9cdbabb99c9888792c167866f06d65eb
| author | drewp@bigasterisk.com |
|---|---|
| date | Mon, 21 Mar 2016 04:23:59 -0700 |
| parents | 254df9f881a6 |
| children | dc0eb85f8650 |
| rev | line source |
|---|---|
| 182 | 1 from __future__ import division |
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2 import sys, logging, socket, json, time, os |
| 182 | 3 import cyclone.web |
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4 from cyclone.httpclient import fetch |
| 226 | 5 from rdflib import Namespace, URIRef, Literal, Graph, RDF, ConjunctiveGraph |
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6 from rdflib.parser import StringInputSource |
| 182 | 7 from twisted.internet import reactor, task |
| 8 from docopt import docopt | |
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9 |
| 182 | 10 logging.basicConfig(level=logging.DEBUG) |
| 226 | 11 sys.path.append("/opt/homeauto_lib") |
| 12 from patchablegraph import PatchableGraph, CycloneGraphHandler, CycloneGraphEventsHandler | |
| 13 from light9.rdfdb.rdflibpatch import inContext | |
| 14 from light9.rdfdb.patch import Patch | |
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15 sys.path.append('/opt/pigpio') |
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16 try: |
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17 import pigpio |
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18 except ImportError: |
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19 class pigpio(object): |
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20 @staticmethod |
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21 def pi(): |
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22 return None |
| 182 | 23 |
| 24 import devices | |
| 25 | |
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26 # from /my/proj/room |
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27 from carbondata import CarbonClient |
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28 |
| 182 | 29 log = logging.getLogger() |
| 30 logging.getLogger('serial').setLevel(logging.WARN) | |
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31 |
| 182 | 32 ROOM = Namespace('http://projects.bigasterisk.com/room/') |
| 33 HOST = Namespace('http://bigasterisk.com/ruler/host/') | |
| 34 | |
| 35 hostname = socket.gethostname() | |
| 36 | |
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37 CTX = ROOM['pi/%s' % hostname] |
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38 |
| 258 | 39 def patchRandid(): |
| 40 """ | |
| 41 I'm concerned urandom is slow on raspberry pi, and I'm adding to | |
| 42 graphs a lot. Unclear what the ordered return values might do to | |
| 43 the balancing of the graph. | |
| 44 """ | |
| 45 _id_serial = [1000] | |
| 46 def randid(): | |
| 47 _id_serial[0] += 1 | |
| 48 return _id_serial[0] | |
| 49 import rdflib.plugins.memory | |
| 50 rdflib.plugins.memory.randid = randid | |
| 51 patchRandid() | |
| 52 | |
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53 class Config(object): |
| 226 | 54 def __init__(self, masterGraph): |
| 55 self.graph = ConjunctiveGraph() | |
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56 log.info('read config') |
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57 for f in os.listdir('config'): |
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58 if f.startswith('.'): continue |
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59 self.graph.parse('config/%s' % f, format='n3') |
| 258 | 60 log.info(' parsed %s', f) |
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61 self.graph.bind('', ROOM) # not working |
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62 self.graph.bind('rdf', RDF) |
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63 # config graph is too noisy; maybe make it a separate resource |
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64 #masterGraph.patch(Patch(addGraph=self.graph)) |
| 182 | 65 |
| 66 class Board(object): | |
| 67 """similar to arduinoNode.Board but without the communications stuff""" | |
| 226 | 68 def __init__(self, graph, masterGraph, uri): |
| 182 | 69 self.graph, self.uri = graph, uri |
| 226 | 70 self.masterGraph = masterGraph |
| 71 self.masterGraph.patch(Patch(addQuads=self.staticStmts())) | |
| 182 | 72 self.pi = pigpio.pi() |
| 73 self._devs = devices.makeDevices(graph, self.uri, self.pi) | |
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74 log.debug('found %s devices', len(self._devs)) |
| 182 | 75 self._statementsFromInputs = {} # input device uri: latest statements |
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76 self._lastPollTime = {} # input device uri: time() |
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77 self._carbon = CarbonClient(serverHost='bang') |
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78 for d in self._devs: |
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79 self.syncMasterGraphToHostStatements(d) |
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80 |
| 182 | 81 def startPolling(self): |
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82 task.LoopingCall(self._poll).start(.05) |
| 182 | 83 |
| 84 def _poll(self): | |
| 85 for i in self._devs: | |
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86 now = time.time() |
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87 if (hasattr(i, 'pollPeriod') and |
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88 self._lastPollTime.get(i.uri, 0) + i.pollPeriod > now): |
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89 continue |
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90 new = i.poll() |
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91 if isinstance(new, dict): # new style |
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92 oneshot = new['oneshot'] |
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93 new = new['latest'] |
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94 else: |
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95 oneshot = None |
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96 prev = self._statementsFromInputs.get(i.uri, []) |
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97 |
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98 if new or prev: |
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99 self._statementsFromInputs[i.uri] = new |
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100 # it's important that quads from different devices |
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101 # don't clash, since that can lead to inconsistent |
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102 # patches (e.g. |
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103 # dev1 changes value from 1 to 2; |
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104 # dev2 changes value from 2 to 3; |
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105 # dev1 changes from 2 to 4 but this patch will |
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106 # fail since the '2' statement is gone) |
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107 self.masterGraph.patch(Patch.fromDiff(inContext(prev, i.uri), |
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108 inContext(new, i.uri))) |
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109 |
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110 if oneshot: |
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111 self._sendOneshot(oneshot) |
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112 self._lastPollTime[i.uri] = now |
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113 self._exportToGraphite() |
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114 |
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115 def _sendOneshot(self, oneshot): |
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116 body = (' '.join('%s %s %s .' % (s.n3(), p.n3(), o.n3()) |
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117 for s,p,o in oneshot)).encode('utf8') |
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118 bang6 = 'fcb8:4119:fb46:96f8:8b07:1260:0f50:fcfa' |
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119 fetch(method='POST', |
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120 url='http://[%s]:9071/oneShot' % bang6, |
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121 headers={'Content-Type': ['text/n3']}, postdata=body, |
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122 timeout=5) |
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123 |
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124 def _exportToGraphite(self): |
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125 # note this is writing way too often- graphite is storing at a lower res |
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126 now = time.time() |
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127 # 20 sec is not precise; just trying to reduce wifi traffic |
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128 if getattr(self, 'lastGraphiteExport', 0) + 20 > now: |
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129 return |
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130 self.lastGraphiteExport = now |
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131 log.debug('graphite export:') |
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132 # objects of these statements are suitable as graphite values. |
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133 graphitePredicates = {ROOM['temperatureF']} |
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134 # bug: one sensor can have temp and humid- this will be ambiguous |
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135 for s, graphiteName in self.graph.subject_objects(ROOM['graphiteName']): |
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136 for group in self._statementsFromInputs.values(): |
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137 for stmt in group: |
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138 if stmt[0] == s and stmt[1] in graphitePredicates: |
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139 log.debug(' sending %s -> %s', stmt[0], graphiteName) |
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140 self._carbon.send(graphiteName, stmt[2].toPython(), now) |
| 226 | 141 |
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142 def outputStatements(self, stmts): |
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143 unused = set(stmts) |
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144 for dev in self._devs: |
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145 stmtsForDev = [] |
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146 for pat in dev.outputPatterns(): |
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147 if [term is None for term in pat] != [False, False, True]: |
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148 raise NotImplementedError |
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149 for stmt in stmts: |
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150 if stmt[:2] == pat[:2]: |
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151 stmtsForDev.append(stmt) |
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152 unused.discard(stmt) |
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153 if stmtsForDev: |
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154 log.info("output goes to action handler for %s" % dev.uri) |
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155 dev.sendOutput(stmtsForDev) |
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156 |
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157 # Dev *could* change hostStatements at any time, and |
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158 # we're not currently tracking that, but the usual is |
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159 # to change them in response to sendOutput so this |
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160 # should be good enough. The right answer is to give |
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161 # each dev the masterGraph for it to write to. |
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162 self.syncMasterGraphToHostStatements(dev) |
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163 log.info("output and masterGraph sync complete") |
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164 if unused: |
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165 log.info("Board %s doesn't care about these statements:", self.uri) |
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166 for s in unused: |
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167 log.warn("%r", s) |
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168 |
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169 def syncMasterGraphToHostStatements(self, dev): |
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170 hostStmtCtx = URIRef(dev.uri + '/host') |
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171 newQuads = inContext(dev.hostStatements(), hostStmtCtx) |
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172 p = self.masterGraph.patchSubgraph(hostStmtCtx, newQuads) |
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173 log.debug("patch master with these host stmts %s", p) |
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174 |
| 226 | 175 def staticStmts(self): |
|
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176 return [(HOST[hostname], ROOM['connectedTo'], self.uri, CTX)] |
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177 |
|
183
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178 def description(self): |
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179 """for web page""" |
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180 return { |
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181 'uri': self.uri, |
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182 'devices': [d.description() for d in self._devs], |
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183 'graph': 'http://sticker:9059/graph', #todo |
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184 } |
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185 |
|
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186 class Dot(cyclone.web.RequestHandler): |
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187 def get(self): |
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188 configGraph = self.settings.config.graph |
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189 dot = dotrender.render(configGraph, self.settings.boards) |
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190 self.write(dot) |
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191 |
|
184
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192 def rdfGraphBody(body, headers): |
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193 g = Graph() |
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194 g.parse(StringInputSource(body), format='nt') |
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195 return g |
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183
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196 |
| 182 | 197 class OutputPage(cyclone.web.RequestHandler): |
| 198 def put(self): | |
|
184
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199 arg = self.request.arguments |
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200 if arg.get('s') and arg.get('p'): |
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201 subj = URIRef(arg['s'][-1]) |
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202 pred = URIRef(arg['p'][-1]) |
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203 turtleLiteral = self.request.body |
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204 try: |
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205 obj = Literal(float(turtleLiteral)) |
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206 except ValueError: |
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207 obj = Literal(turtleLiteral) |
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208 stmt = (subj, pred, obj) |
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209 else: |
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210 g = rdfGraphBody(self.request.body, self.request.headers) |
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211 assert len(g) == 1, len(g) |
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212 stmt = g.triples((None, None, None)).next() |
| 182 | 213 |
| 214 self.settings.board.outputStatements([stmt]) | |
| 215 | |
|
183
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216 class Boards(cyclone.web.RequestHandler): |
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217 def get(self): |
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218 self.set_header('Content-type', 'application/json') |
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219 self.write(json.dumps({ |
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220 'host': hostname, |
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221 'boards': [self.settings.board.description()] |
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222 }, indent=2)) |
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223 |
| 182 | 224 def main(): |
| 225 arg = docopt(""" | |
| 226 Usage: piNode.py [options] | |
| 227 | |
| 228 -v Verbose | |
| 229 """) | |
| 230 log.setLevel(logging.WARN) | |
| 231 if arg['-v']: | |
| 232 from twisted.python import log as twlog | |
| 233 twlog.startLogging(sys.stdout) | |
| 234 | |
| 235 log.setLevel(logging.DEBUG) | |
|
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236 |
| 226 | 237 masterGraph = PatchableGraph() |
| 238 config = Config(masterGraph) | |
| 182 | 239 |
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240 thisHost = Literal(hostname) |
|
221
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241 for row in config.graph.query( |
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242 'SELECT ?board WHERE { ?board a :PiBoard; :hostname ?h }', |
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243 initBindings=dict(h=thisHost)): |
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244 thisBoard = row.board |
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245 break |
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246 else: |
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247 raise ValueError("config had no board for :hostname %r" % thisHost) |
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248 |
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249 log.info("found config for board %r" % thisBoard) |
| 226 | 250 board = Board(config.graph, masterGraph, thisBoard) |
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251 board.startPolling() |
| 182 | 252 |
| 253 reactor.listenTCP(9059, cyclone.web.Application([ | |
| 254 (r"/()", cyclone.web.StaticFileHandler, { | |
|
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255 "path": "../arduinoNode/static", "default_filename": "index.html"}), |
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256 (r'/static/(.*)', cyclone.web.StaticFileHandler, {"path": "../arduinoNode/static"}), |
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257 (r'/boards', Boards), |
| 226 | 258 (r"/graph", CycloneGraphHandler, {'masterGraph': masterGraph}), |
| 259 (r"/graph/events", CycloneGraphEventsHandler, {'masterGraph': masterGraph}), | |
| 182 | 260 (r'/output', OutputPage), |
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261 (r'/dot', Dot), |
| 220 | 262 ], config=config, board=board, debug=arg['-v']), interface='::') |
| 258 | 263 log.warn('serving on 9059') |
| 182 | 264 reactor.run() |
| 265 | |
| 266 main() |