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annotate service/mqtt_graph_bridge/mqtt_graph_bridge.py @ 1400:31aed1a0af9c

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adjust kitchen PWM freqs. add comments and proposed contents of n3 configs Ignore-this: 8fc4659c1d8830e1ed66b0702b1e69fd darcs-hash:026328acb60195c0d4410ce1cc583ac120d1c6a3
author drewp <drewp@bigasterisk.com>
date Sat, 13 Jul 2019 19:58:50 -0700
parents 928b1833de0f
children 925bc4137c93
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1 """
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2 We get output statements that are like light9's deviceAttrs (:dev1 :color "#ff0000"),
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3 convert those to outputAttrs (:dev1 :red 255; :green 0; :blue 0) and post them to mqtt.
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4
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5 This is like light9/bin/collector.
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6 """
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7 import json
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8
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9 from docopt import docopt
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10 from rdflib import Namespace, URIRef, Literal, Graph
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11 from rdflib.parser import StringInputSource
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12 from twisted.internet import reactor
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13 import cyclone.web
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14
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15 from mqtt_client import MqttClient
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16 from patchablegraph import PatchableGraph, CycloneGraphHandler, CycloneGraphEventsHandler
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17 from standardservice.logsetup import log, verboseLogging
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18
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19 ROOM = Namespace('http://projects.bigasterisk.com/room/')
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20
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21 devs = {
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22 ROOM['kitchenLight']: {
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23 'root': 'h801_skylight',
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24 'ctx': ROOM['kitchenH801']
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25 },
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26 ROOM['kitchenCounterLight']: {
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27 'root': 'h801_counter',
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28 'ctx': ROOM['kitchenH801']
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29 },
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30 }
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31
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32 def rdfGraphBody(body, headers):
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33 g = Graph()
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34 g.parse(StringInputSource(body), format='nt')
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35 return g
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36
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37 class OutputPage(cyclone.web.RequestHandler):
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38 def put(self):
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39 arg = self.request.arguments
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40 if arg.get('s') and arg.get('p'):
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41 subj = URIRef(arg['s'][-1])
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42 pred = URIRef(arg['p'][-1])
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43 turtleLiteral = self.request.body
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44 try:
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45 obj = Literal(float(turtleLiteral))
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46 except ValueError:
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47 obj = Literal(turtleLiteral)
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48 stmt = (subj, pred, obj)
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49 else:
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50 g = rdfGraphBody(self.request.body, self.request.headers)
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51 assert len(g) == 1, len(g)
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52 stmt = g.triples((None, None, None)).next()
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53 self._onStatement(stmt)
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54
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55 def _onStatement(self, stmt):
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56 ignored = True
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57 for dev, attrs in devs.items():
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58 if stmt[0:2] == (dev, ROOM['brightness']):
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59 for chan, scale in [('w1', 1),
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60 ('r', 1),
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61 ('g', .8),
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62 ('b', .8)]:
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63 out = stmt[2].toPython() * scale
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64 topic = f"{attrs['root']}/light/kit_{chan}/command"
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65 self.settings.mqtt.publish(
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66 topic.encode('ascii'),
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67 json.dumps({
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68 'state': 'ON',
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69 'brightness': int(out * 255)}).encode('ascii'))
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70 self.settings.masterGraph.patchObject(
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71 attrs['ctx'],
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72 stmt[0], stmt[1], stmt[2])
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73 ignored = False
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74 if ignored:
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75 log.warn("ignoring %s", stmt)
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76
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77 if __name__ == '__main__':
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78 arg = docopt("""
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79 Usage: mqtt_graph_bridge.py [options]
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80
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81 -v Verbose
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82 """)
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83 verboseLogging(arg['-v'])
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84
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85 masterGraph = PatchableGraph()
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86
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87 mqtt = MqttClient(clientId='mqtt_graph_bridge', brokerPort=1883)
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88
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89 port = 10008
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90 reactor.listenTCP(port, cyclone.web.Application([
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91 (r"/()", cyclone.web.StaticFileHandler,
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92 {"path": ".", "default_filename": "index.html"}),
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93 (r"/graph", CycloneGraphHandler, {'masterGraph': masterGraph}),
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94 (r"/graph/events", CycloneGraphEventsHandler,
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95 {'masterGraph': masterGraph}),
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96 (r'/output', OutputPage),
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97 ], mqtt=mqtt, masterGraph=masterGraph, debug=arg['-v']), interface='::')
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98 log.warn('serving on %s', port)
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99
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100 for dev, attrs in devs.items():
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101 masterGraph.patchObject(attrs['ctx'],
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102 dev, ROOM['brightness'], Literal(0.0))
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103
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104 reactor.run()