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annotate service/frontDoorLock/front_door_lock.py @ 425:d495d4382a07

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comments and console layout Ignore-this: b45fcf8177a1200c126b80bf9f43aafa
author drewp@bigasterisk.com
date Thu, 04 Apr 2019 02:14:48 -0700
parents 67cebf7a14de
children bfe555dd0c91
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425
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1 """
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2 :frontDoorLock :state :locked/:unlocked
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3 is the true state of the lock, maintained in this process.
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4
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5 put :frontDoorLock :state ?s to this /output to request a change.
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6
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7 reasoning can infer :frontDoorLock :putState ?s to do that put request.
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8 """
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9 from docopt import docopt
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10 from patchablegraph import PatchableGraph, CycloneGraphHandler, CycloneGraphEventsHandler
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11 from rdflib import Namespace, URIRef, Literal, Graph
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12 from rdflib.parser import StringInputSource
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13 from twisted.internet import reactor, task
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14 import cyclone.web
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15 import sys, logging, time
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16 from mqtt_client import MqttClient
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17 from logsetup import log, enableTwistedLog
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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 ctx = ROOM['frontDoorControl']
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22
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23 def rdfGraphBody(body, headers):
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24 g = Graph()
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25 g.parse(StringInputSource(body), format='nt')
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26 return g
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27
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28 def mqttMessageFromState(state):
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29 return {
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30 ROOM['locked']: b'OFF',
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31 ROOM['unlocked']: b'ON',
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32 }[state]
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33
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34 def stateFromMqtt(msg):
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35 return {
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36 'OFF': ROOM['locked'],
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37 'ON': ROOM['unlocked'],
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38 }[msg.decode('ascii')]
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39
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40 class OutputPage(cyclone.web.RequestHandler):
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41 def put(self):
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42 arg = self.request.arguments
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43 if arg.get('s') and arg.get('p'):
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44 subj = URIRef(arg['s'][-1])
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45 pred = URIRef(arg['p'][-1])
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46 obj = URIRef(self.request.body)
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47 stmt = (subj, pred, obj)
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48 else:
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49 g = rdfGraphBody(self.request.body, self.request.headers)
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50 assert len(g) == 1, len(g)
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51 stmt = g.triples((None, None, None)).next()
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52 self._onStatement(stmt)
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53 post = put
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54
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55 def _onStatement(self, stmt):
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56 if stmt[0:2] == (ROOM['frontDoorLock'], ROOM['state']):
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57 self.settings.mqtt.publish("frontdoor/switch/strike/command",
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58 mqttMessageFromState(stmt[2]))
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59 return
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60 log.warn("ignoring %s", stmt)
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61
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62
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63 class AutoLock(object):
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64 def __init__(self, masterGraph, mqtt):
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65 self.masterGraph = masterGraph
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66 self.mqtt = mqtt
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67 self.timeUnlocked = None
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68 self.autoLockSec = 5
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69 self.subj = ROOM['frontDoorLock']
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70 task.LoopingCall(self.check).start(1)
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71
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72 def check(self):
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73 now = time.time()
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74 state = self.masterGraph._graph.value(self.subj, ROOM['state'])
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75 if state == ROOM['unlocked']:
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76 if self.timeUnlocked is None:
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77 self.timeUnlocked = now
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78 unlockedFor = now - self.timeUnlocked
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79 self.masterGraph.patchObject(ctx, self.subj, ROOM['unlockedForSec'],
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80 Literal(int(unlockedFor)))
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81 self.masterGraph.patchObject(ctx, self.subj, ROOM['autoLockInSec'],
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82 Literal(self.autoLockSec - int(unlockedFor)))
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83 if unlockedFor > self.autoLockSec:
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84 self.mqtt.publish("frontdoor/switch/strike/command",
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85 mqttMessageFromState(ROOM['locked']))
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86 else:
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87 self.timeUnlocked = None
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88 self.masterGraph.patchObject(ctx, self.subj, ROOM['unlockedForSec'], None)
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89 self.masterGraph.patchObject(ctx, self.subj, ROOM['autoLockInSec'], None)
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90
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91
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92 if __name__ == '__main__':
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93 arg = docopt("""
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94 Usage: front_door_lock.py [options]
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95
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96 -v Verbose
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97 """)
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98 log.setLevel(logging.INFO)
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99 if arg['-v']:
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100 enableTwistedLog()
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101 log.setLevel(logging.DEBUG)
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102
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103 masterGraph = PatchableGraph()
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104 mqtt = MqttClient(brokerPort=10010)
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105 autoclose = AutoLock(masterGraph, mqtt)
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106
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107 def toGraph(payload):
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108 log.info('mqtt->graph %r', payload)
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109 masterGraph.patchObject(ctx, ROOM['frontDoorLock'], ROOM['state'],
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110 stateFromMqtt(payload))
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111
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112 mqtt.subscribe("frontdoor/switch/strike/state").subscribe(on_next=toGraph)
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113 port = 10011
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114 reactor.listenTCP(port, cyclone.web.Application([
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115 (r"/()", cyclone.web.StaticFileHandler,
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116 {"path": ".", "default_filename": "index.html"}),
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117 (r"/graph", CycloneGraphHandler, {'masterGraph': masterGraph}),
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118 (r"/graph/events", CycloneGraphEventsHandler,
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119 {'masterGraph': masterGraph}),
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120 (r'/output', OutputPage),
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121 ], mqtt=mqtt, masterGraph=masterGraph, debug=arg['-v']), interface='::')
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122 log.warn('serving on %s', port)
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123
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124 reactor.run()