Mercurial > code > home > repos > homeauto
annotate service/piNode/piNode.py @ 640:23ab244aa649
move bnode id optimization to its own file. more logging cleanups
Ignore-this: 1787f7268eafa52e7c094e327333021c
author | drewp@bigasterisk.com |
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date | Mon, 12 Aug 2019 16:46:52 -0700 |
parents | ad1756af9d99 |
children | 0a39cb133ce5 |
rev | line source |
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636 | 1 import logging, socket, json, time, pkg_resources |
182 | 2 import cyclone.web |
226 | 3 from rdflib import Namespace, URIRef, Literal, Graph, RDF, ConjunctiveGraph |
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4 from rdflib.parser import StringInputSource |
636 | 5 from twisted.internet import reactor |
6 from twisted.internet.defer import inlineCallbacks, maybeDeferred, returnValue | |
347 | 7 from twisted.internet.threads import deferToThread |
182 | 8 from docopt import docopt |
636 | 9 import etcd3 |
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10 from greplin import scales |
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11 from greplin.scales.cyclonehandler import StatsHandler |
636 | 12 import pigpio |
13 import treq | |
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14 |
226 | 15 from patchablegraph import PatchableGraph, CycloneGraphHandler, CycloneGraphEventsHandler |
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16 from cycloneerr import PrettyErrorHandler |
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17 from standardservice.logsetup import log, verboseLogging |
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18 from rdfdb.rdflibpatch import inContext |
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19 from rdfdb.patch import Patch |
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20 from rdflib_pi_opt import patchRandid |
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21 from export_to_influxdb import InfluxExporter |
182 | 22 |
23 import devices | |
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24 |
182 | 25 ROOM = Namespace('http://projects.bigasterisk.com/room/') |
26 HOST = Namespace('http://bigasterisk.com/ruler/host/') | |
27 | |
28 hostname = socket.gethostname() | |
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29 CTX = ROOM['pi/%s' % hostname] |
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30 |
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31 STATS = scales.collection('/root', |
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32 scales.PmfStat('configReread'), |
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33 scales.IntStat('pollException'), |
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34 scales.PmfStat('pollAll'), |
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35 scales.PmfStat('boardPoll'), |
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36 scales.PmfStat('sendOneshot'), |
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37 scales.PmfStat('outputStatements'), |
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38 |
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39 ) |
258 | 40 |
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41 class Config(object): |
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42 def __init__(self, masterGraph, hubHost): |
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43 self.etcd = etcd3.client(host=hubHost, port=9022) |
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44 |
347 | 45 self.masterGraph = masterGraph |
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46 self.hubHost = hubHost |
347 | 47 self.configGraph = ConjunctiveGraph() |
48 self.boards = [] | |
49 self.etcPrefix = 'pi/' | |
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50 self.rereadLater = None |
347 | 51 |
52 self.reread() | |
53 | |
54 deferToThread(self.watchEtcd) | |
55 | |
56 def watchEtcd(self): | |
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57 events, cancel = self.etcd.watch_prefix(self.etcPrefix) |
347 | 58 reactor.addSystemEventTrigger('before', 'shutdown', cancel) |
59 for ev in events: | |
60 log.info('%s changed', ev.key) | |
61 reactor.callFromThread(self.configChanged) | |
62 | |
63 def configChanged(self): | |
64 self.cancelRead() | |
65 self.rereadLater = reactor.callLater(.1, self.reread) | |
66 | |
67 def cancelRead(self): | |
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68 if self.rereadLater: |
347 | 69 self.rereadLater.cancel() |
70 self.rereadLater = None | |
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71 |
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72 @STATS.configReread.time() |
347 | 73 def reread(self): |
74 self.rereadLater = None | |
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75 log.info('read config') |
347 | 76 self.configGraph = ConjunctiveGraph() |
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77 for v, md in self.etcd.get_prefix(self.etcPrefix): |
347 | 78 log.info(' read file %r', md.key) |
79 self.configGraph.parse(StringInputSource(v), format='n3') | |
80 self.configGraph.bind('', ROOM) | |
81 self.configGraph.bind('rdf', RDF) | |
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82 # config graph is too noisy; maybe make it a separate resource |
347 | 83 #masterGraph.patch(Patch(addGraph=self.configGraph)) |
84 self.setupBoards() | |
624 | 85 |
86 def setupBoards(self): | |
347 | 87 thisHost = Literal(hostname) |
88 for row in self.configGraph.query( | |
89 'SELECT ?board WHERE { ?board a :PiBoard; :hostname ?h }', | |
90 initBindings=dict(h=thisHost)): | |
91 thisBoard = row.board | |
92 break | |
93 else: | |
94 log.warn("config had no board for :hostname %s. Waiting for config update." % | |
95 thisHost) | |
96 self.boards = [] | |
97 return | |
98 | |
99 log.info("found config for board %r" % thisBoard) | |
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100 self.boards = [Board(self.configGraph, self.masterGraph, thisBoard, self.hubHost)] |
347 | 101 |
182 | 102 |
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103 class DeviceRunner(object): |
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104 def __init__(self, dev): |
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105 self.dev = dev |
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106 self.period = getattr(self.dev, 'pollPeriod', .05) |
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107 #self._lastPollTime.get(i.uri, 0) + self.pollPeriod > now): |
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108 |
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109 reactor.callLater(0, self.poll) |
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110 |
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111 @inlineCallbacks |
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112 def poll(self): |
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113 now = time.time() |
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114 try: |
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115 with self.dev.stats.poll.time(): |
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116 new = yield maybeDeferred(self.dev.poll) |
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117 finally: |
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118 reactor.callLater(max(0, time.time() - (now + self.period)), self.poll) |
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119 returnValue(new) |
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120 |
182 | 121 class Board(object): |
122 """similar to arduinoNode.Board but without the communications stuff""" | |
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123 def __init__(self, graph, masterGraph, uri, hubHost): |
182 | 124 self.graph, self.uri = graph, uri |
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125 self.hubHost = hubHost |
226 | 126 self.masterGraph = masterGraph |
636 | 127 |
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128 self.masterGraph.setToGraph(self.staticStmts()) |
182 | 129 self.pi = pigpio.pi() |
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130 self._devs = [DeviceRunner(d) for d in devices.makeDevices(graph, self.uri, self.pi)] |
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131 log.debug('found %s devices', len(self._devs)) |
182 | 132 self._statementsFromInputs = {} # input device uri: latest statements |
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133 self._lastPollTime = {} # input device uri: time() |
293 | 134 self._influx = InfluxExporter(self.graph) |
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135 for d in self._devs: |
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136 self.syncMasterGraphToHostStatements(d.dev) |
624 | 137 |
182 | 138 def startPolling(self): |
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139 task.LoopingCall(self._poll).start(.05) |
182 | 140 |
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141 @STATS.boardPoll.time() # not differentiating multiple boards here |
182 | 142 def _poll(self): |
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143 try: |
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144 self._pollMaybeError() |
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145 except Exception: |
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146 STATS.pollException += 1 |
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147 log.exception("During poll:") |
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148 |
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149 |
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150 @inlineCallbacks |
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151 def _pollOneDev(self, i): |
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152 now = time.time() |
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153 |
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154 new = i.poll() |
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155 if isinstance(new, dict): # new style |
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156 oneshot = new['oneshot'] |
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157 new = new['latest'] |
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158 else: |
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159 oneshot = None |
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160 |
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161 self._updateMasterWithNewPollStatements(i.uri, new) |
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162 |
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163 if oneshot: |
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164 self._sendOneshot(oneshot) |
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165 self._lastPollTime[i.uri] = now |
624 | 166 |
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167 @inlineCallbacks |
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168 def _pollMaybeError(self): |
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169 pollTime = {} # uri: sec |
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170 yield gatherResults([self._pollOneDev(i.dev, pollTime) |
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171 for i in self._devs], consumeErrors=True) |
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172 |
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173 pollResults = map(set, self._statementsFromInputs.values()) |
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174 if pollResults: |
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175 self._influx.exportToInflux(set.union(*pollResults)) |
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176 |
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177 def _updateMasterWithNewPollStatements(self, dev, new): |
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178 prev = self._statementsFromInputs.get(dev, set()) |
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179 |
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180 # it's important that quads from different devices |
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181 # don't clash, since that can lead to inconsistent |
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182 # patches (e.g. |
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183 # dev1 changes value from 1 to 2; |
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184 # dev2 changes value from 2 to 3; |
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185 # dev1 changes from 2 to 4 but this patch will |
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186 # fail since the '2' statement is gone) |
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187 self.masterGraph.patch(Patch.fromDiff(inContext(prev, dev), |
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188 inContext(new, dev))) |
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189 self._statementsFromInputs[dev] = new |
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190 |
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191 @STATS.sendOneshot.time() |
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192 def _sendOneshot(self, oneshot): |
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193 body = (' '.join('%s %s %s .' % (s.n3(), p.n3(), o.n3()) |
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194 for s,p,o in oneshot)).encode('utf8') |
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195 url = 'http://%s:9071/oneShot' % self.hubHost |
271
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196 d = fetch(method='POST', |
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197 url=url, |
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198 headers={'Content-Type': ['text/n3']}, |
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199 postdata=body, |
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200 timeout=5) |
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201 def err(e): |
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202 log.info('oneshot post to %r failed: %s', |
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203 url, e.getErrorMessage()) |
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204 d.addErrback(err) |
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205 |
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206 @STATS.outputStatements.time() |
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207 def outputStatements(self, stmts): |
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208 unused = set(stmts) |
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209 for devRunner in self._devs: |
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210 dev = devRunner.dev |
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211 stmtsForDev = [] |
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212 for pat in dev.outputPatterns(): |
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213 if [term is None for term in pat] != [False, False, True]: |
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214 raise NotImplementedError |
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215 for stmt in stmts: |
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216 if stmt[:2] == pat[:2]: |
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217 stmtsForDev.append(stmt) |
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218 unused.discard(stmt) |
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219 if stmtsForDev: |
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220 log.info("output goes to action handler for %s" % dev.uri) |
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221 with dev.stats.output.time(): |
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222 dev.sendOutput(stmtsForDev) |
233
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223 |
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224 # Dev *could* change hostStatements at any time, and |
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225 # we're not currently tracking that, but the usual is |
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226 # to change them in response to sendOutput so this |
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227 # should be good enough. The right answer is to give |
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228 # each dev the masterGraph for it to write to. |
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229 self.syncMasterGraphToHostStatements(dev) |
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230 log.info("output and masterGraph sync complete") |
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231 if unused: |
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232 log.info("Board %s doesn't care about these statements:", self.uri) |
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233 for s in unused: |
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234 log.warn("%r", s) |
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235 |
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236 def syncMasterGraphToHostStatements(self, dev): |
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237 hostStmtCtx = URIRef(dev.uri + '/host') |
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238 newQuads = inContext(dev.hostStatements(), hostStmtCtx) |
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239 p = self.masterGraph.patchSubgraph(hostStmtCtx, newQuads) |
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240 log.debug("patch master with these host stmts %s", p) |
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241 |
226 | 242 def staticStmts(self): |
233
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243 return [(HOST[hostname], ROOM['connectedTo'], self.uri, CTX)] |
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244 |
183
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245 def description(self): |
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246 """for web page""" |
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247 return { |
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248 'uri': self.uri, |
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249 'devices': [d.dev.description() for d in self._devs], |
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250 'graph': 'http://sticker:9059/graph', #todo |
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251 } |
624 | 252 |
184
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253 def rdfGraphBody(body, headers): |
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254 g = Graph() |
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255 g.parse(StringInputSource(body), format='nt') |
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256 return g |
183
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257 |
591 | 258 class OutputPage(PrettyErrorHandler, cyclone.web.RequestHandler): |
182 | 259 def put(self): |
184
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260 arg = self.request.arguments |
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261 if arg.get('s') and arg.get('p'): |
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262 subj = URIRef(arg['s'][-1]) |
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263 pred = URIRef(arg['p'][-1]) |
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264 turtleLiteral = self.request.body |
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265 try: |
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266 obj = Literal(float(turtleLiteral)) |
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267 except ValueError: |
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268 obj = Literal(turtleLiteral) |
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269 stmt = (subj, pred, obj) |
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270 else: |
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271 g = rdfGraphBody(self.request.body, self.request.headers) |
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272 assert len(g) == 1, len(g) |
636 | 273 stmt = next(g.triples((None, None, None))) |
182 | 274 |
347 | 275 for b in self.settings.config.boards: |
636 | 276 b.outputStatements({stmt}) |
182 | 277 |
591 | 278 class Boards(PrettyErrorHandler, cyclone.web.RequestHandler): |
183
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279 def get(self): |
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280 self.set_header('Content-type', 'application/json') |
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281 self.write(json.dumps({ |
233
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282 'host': hostname, |
347 | 283 'boards': [b.description() for b in self.settings.config.boards] |
183
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284 }, indent=2)) |
624 | 285 |
182 | 286 def main(): |
287 arg = docopt(""" | |
288 Usage: piNode.py [options] | |
289 | |
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290 -v Verbose |
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291 --ow Just report onewire device URIs and readings, then exit. |
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292 --hub=HOST Hostname for etc3 and oneshot posts. [default: bang.vpn-home.bigasterisk.com] |
182 | 293 """) |
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294 verboseLogging(arg['-v']) |
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295 |
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296 if arg['--ow']: |
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297 log.setLevel(logging.INFO) |
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298 for stmt in devices.OneWire().poll(): |
636 | 299 print(stmt) |
408
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300 return |
624 | 301 |
640
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302 patchRandid() |
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303 |
226 | 304 masterGraph = PatchableGraph() |
408
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305 config = Config(masterGraph, arg['--hub']) |
624 | 306 |
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307 static = pkg_resources.resource_filename('homeauto_anynode', 'static/') |
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308 |
182 | 309 reactor.listenTCP(9059, cyclone.web.Application([ |
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310 (r"/(|output-widgets.html)", cyclone.web.StaticFileHandler, { |
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311 "path": static, "default_filename": "index.html"}), |
553 | 312 (r'/static/(.*)', cyclone.web.StaticFileHandler, {"path": static}), |
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313 (r'/stats/(.*)', StatsHandler, {'serverName': 'piNode'}), |
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314 (r'/boards', Boards), |
226 | 315 (r"/graph", CycloneGraphHandler, {'masterGraph': masterGraph}), |
316 (r"/graph/events", CycloneGraphEventsHandler, {'masterGraph': masterGraph}), | |
182 | 317 (r'/output', OutputPage), |
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318 ], config=config, debug=arg['-v']), interface='::') |
258 | 319 log.warn('serving on 9059') |
182 | 320 reactor.run() |
321 | |
322 main() |