Mercurial > code > home > repos > homeauto
annotate service/piNode/piNode.py @ 1030:01e443398336
piNode sends hostname for page title
Ignore-this: d317f012a73a98d287ba7834a1aafeb6
darcs-hash:fe2fd418a9e8ff2d0e5c966d06f45edb5e57ba35
author | drewp <drewp@bigasterisk.com> |
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date | Mon, 25 Jan 2016 00:24:34 -0800 |
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987 | 1 from __future__ import division |
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2 import sys, logging, socket, json, time |
987 | 3 import cyclone.web |
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4 from rdflib import Namespace, URIRef, Literal, Graph, RDF |
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5 from rdflib.parser import StringInputSource |
987 | 6 from twisted.internet import reactor, task |
7 from docopt import docopt | |
8 logging.basicConfig(level=logging.DEBUG) | |
9 sys.path.append("/my/site/magma") | |
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10 sys.path.append("../../../../site/magma") |
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11 |
987 | 12 from stategraph import StateGraph |
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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 |
987 | 21 |
22 import devices | |
23 | |
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24 # from /my/proj/room |
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25 from carbondata import CarbonClient |
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26 |
987 | 27 log = logging.getLogger() |
28 logging.getLogger('serial').setLevel(logging.WARN) | |
29 ROOM = Namespace('http://projects.bigasterisk.com/room/') | |
30 HOST = Namespace('http://bigasterisk.com/ruler/host/') | |
31 | |
32 hostname = socket.gethostname() | |
33 | |
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34 class Config(object): |
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35 def __init__(self): |
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36 self.graph = Graph() |
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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 |
987 | 42 class GraphPage(cyclone.web.RequestHandler): |
43 def get(self): | |
44 g = StateGraph(ctx=ROOM['pi/%s' % hostname]) | |
45 | |
46 for stmt in self.settings.board.currentGraph(): | |
47 g.add(stmt) | |
48 | |
49 if self.get_argument('config', 'no') == 'yes': | |
50 for stmt in self.settings.config.graph: | |
51 g.add(stmt) | |
52 | |
53 self.set_header('Content-type', 'application/x-trig') | |
54 self.write(g.asTrig()) | |
55 | |
56 class Board(object): | |
57 """similar to arduinoNode.Board but without the communications stuff""" | |
58 def __init__(self, graph, uri, onChange): | |
59 self.graph, self.uri = graph, uri | |
60 self.pi = pigpio.pi() | |
61 self._devs = devices.makeDevices(graph, self.uri, self.pi) | |
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62 log.debug('found %s devices', len(self._devs)) |
987 | 63 self._statementsFromInputs = {} # input device uri: latest statements |
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64 self._carbon = CarbonClient(serverHost='bang') |
987 | 65 |
66 def startPolling(self): | |
67 task.LoopingCall(self._poll).start(.5) | |
68 | |
69 def _poll(self): | |
70 for i in self._devs: | |
71 self._statementsFromInputs[i.uri] = i.poll() | |
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72 self._exportToGraphite() |
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73 |
987 | 74 def outputStatements(self, stmts): |
75 unused = set(stmts) | |
76 for dev in self._devs: | |
77 stmtsForDev = [] | |
78 for pat in dev.outputPatterns(): | |
79 if [term is None for term in pat] != [False, False, True]: | |
80 raise NotImplementedError | |
81 for stmt in stmts: | |
82 if stmt[:2] == pat[:2]: | |
83 stmtsForDev.append(stmt) | |
84 unused.discard(stmt) | |
85 if stmtsForDev: | |
86 log.info("output goes to action handler for %s" % dev.uri) | |
87 dev.sendOutput(stmtsForDev) | |
88 log.info("success") | |
89 if unused: | |
90 log.warn("No devices cared about these statements:") | |
91 for s in unused: | |
92 log.warn(repr(s)) | |
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93 |
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94 # needs merge with arduinoNode.py |
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95 def _exportToGraphite(self): |
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96 # note this is writing way too often- graphite is storing at a lower res |
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97 now = time.time() |
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98 # 20 sec is not precise; just trying to reduce wifi traffic |
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99 if getattr(self, 'lastGraphiteExport', 0) + 20 > now: |
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100 return |
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101 self.lastGraphiteExport = now |
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102 log.debug('graphite export:') |
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103 # objects of these statements are suitable as graphite values. |
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104 graphitePredicates = {ROOM['temperatureF']} |
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105 # bug: one sensor can have temp and humid- this will be ambiguous |
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106 for s, graphiteName in self.graph.subject_objects(ROOM['graphiteName']): |
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107 for group in self._statementsFromInputs.values(): |
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108 for stmt in group: |
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109 if stmt[0] == s and stmt[1] in graphitePredicates: |
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110 log.debug(' sending %s -> %s', stmt[0], graphiteName) |
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111 self._carbon.send(graphiteName, stmt[2].toPython(), now) |
987 | 112 |
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113 def currentGraph(self): |
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114 g = Graph() |
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115 |
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116 g.add((HOST[socket.gethostname()], ROOM['connectedTo'], self.uri)) |
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117 |
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118 for si in self._statementsFromInputs.values(): |
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119 for s in si: |
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120 g.add(s) |
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121 return g |
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122 |
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123 def description(self): |
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124 """for web page""" |
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125 return { |
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126 'uri': self.uri, |
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127 'devices': [d.description() for d in self._devs], |
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128 'graph': 'http://sticker:9059/graph', #todo |
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129 } |
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130 |
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131 def rdfGraphBody(body, headers): |
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132 g = Graph() |
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133 g.parse(StringInputSource(body), format='nt') |
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134 return g |
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135 |
987 | 136 class OutputPage(cyclone.web.RequestHandler): |
137 def put(self): | |
989
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138 arg = self.request.arguments |
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139 if arg.get('s') and arg.get('p'): |
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140 subj = URIRef(arg['s'][-1]) |
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141 pred = URIRef(arg['p'][-1]) |
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142 turtleLiteral = self.request.body |
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143 try: |
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144 obj = Literal(float(turtleLiteral)) |
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145 except ValueError: |
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146 obj = Literal(turtleLiteral) |
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147 stmt = (subj, pred, obj) |
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148 else: |
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149 g = rdfGraphBody(self.request.body, self.request.headers) |
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150 assert len(g) == 1, len(g) |
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151 stmt = g.triples((None, None, None)).next() |
987 | 152 |
153 self.settings.board.outputStatements([stmt]) | |
154 | |
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155 class Boards(cyclone.web.RequestHandler): |
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156 def get(self): |
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157 self.set_header('Content-type', 'application/json') |
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158 self.write(json.dumps({ |
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159 'host': socket.gethostname(), |
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160 'boards': [self.settings.board.description()] |
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161 }, indent=2)) |
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162 |
987 | 163 def main(): |
164 arg = docopt(""" | |
165 Usage: piNode.py [options] | |
166 | |
167 -v Verbose | |
168 """) | |
169 log.setLevel(logging.WARN) | |
170 if arg['-v']: | |
171 from twisted.python import log as twlog | |
172 twlog.startLogging(sys.stdout) | |
173 | |
174 log.setLevel(logging.DEBUG) | |
175 | |
176 config = Config() | |
177 | |
178 def onChange(): | |
179 # notify reasoning | |
180 pass | |
181 | |
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182 thisHost = Literal(socket.gethostname()) |
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183 for row in config.graph.query( |
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184 'SELECT ?board WHERE { ?board a :PiBoard; :hostname ?h }', |
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185 initBindings=dict(h=thisHost)): |
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186 thisBoard = row.board |
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187 break |
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188 else: |
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189 raise ValueError("config had no board for :hostname %r" % thisHost) |
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190 |
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191 log.info("found config for board %r" % thisBoard) |
987 | 192 board = Board(config.graph, thisBoard, onChange) |
988
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193 board.startPolling() |
987 | 194 |
195 reactor.listenTCP(9059, cyclone.web.Application([ | |
196 (r"/()", cyclone.web.StaticFileHandler, { | |
988
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197 "path": "../arduinoNode/static", "default_filename": "index.html"}), |
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198 (r'/static/(.*)', cyclone.web.StaticFileHandler, {"path": "../arduinoNode/static"}), |
987 | 199 (r"/graph", GraphPage), |
200 (r'/output', OutputPage), | |
988
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201 (r'/boards', Boards), |
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202 #(r'/dot', Dot), |
1025 | 203 ], config=config, board=board, debug=arg['-v']), interface='::') |
987 | 204 reactor.run() |
205 | |
206 main() |