annotate service/reasoning/reasoning.py @ 1749:4b29ce991e59

cloudfree plug sends mqtt metrics, which we export to victoriametrics
author drewp@bigasterisk.com
date Sun, 28 Apr 2024 16:01:38 -0700
parents c8562ace4917
children
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1 """
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2 Graph consists of:
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3 input/* (read at startup)
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4 webinput/* (new files are noticed in here)
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5 any number of remote graphs, specified in the other graph as objects of (:reasoning, :source, *), reread constantly
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6
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7 gather subgraphs from various services, run them through a rules
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8 engine, and make http requests with the conclusions.
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9
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10 E.g. 'when drew's phone is near the house, and someone is awake,
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11 unlock the door when the door's motion sensor is activated'
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12
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13 When do we gather? The services should be able to trigger us, perhaps
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14 with PSHB, that their graph has changed.
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15 """
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16 import json
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17 import sys
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18 import time
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19 import traceback
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20 from logging import DEBUG, WARN, getLogger
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21 from typing import Dict, Optional, Set, Tuple
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22
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23 import cyclone.web
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24 import cyclone.websocket
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25 from colorlog import ColoredFormatter
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26 from docopt import docopt
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27 from patchablegraph import (CycloneGraphEventsHandler, CycloneGraphHandler, PatchableGraph)
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28 from prometheus_client import Counter, Gauge, Histogram, Summary
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29 from prometheus_client.exposition import generate_latest
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30 from prometheus_client.registry import REGISTRY
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31 from rdflib import RDF, Graph, Literal, Namespace, URIRef
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32 from rdflib.graph import ConjunctiveGraph
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33 from rdflib.term import Node
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34 from standardservice.logsetup import log, verboseLogging
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35 from twisted.internet import defer, reactor
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36
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37 from actions import Actions, PutOutputsTable
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38 from escapeoutputstatements import unquoteOutputStatements
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39 from inference import infer, readRules
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40 from inputgraph import InputGraph
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41
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42 ROOM = Namespace("http://projects.bigasterisk.com/room/")
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43 DEV = Namespace("http://projects.bigasterisk.com/device/")
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45 NS = {'': ROOM, 'dev': DEV}
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46
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47 GRAPH_CHANGED_CALLS = Summary('graph_changed_calls', 'calls')
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48 UPDATE_RULES_CALLS = Summary('update_rules_calls', 'calls')
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51 def ntStatement(stmt: Tuple[Node, Node, Node]):
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52
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53 def compact(u):
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54 if isinstance(u, URIRef) and u.startswith(ROOM):
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55 return 'room:' + u[len(ROOM):]
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56 return u.n3()
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57
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58 return '%s %s %s .' % (compact(stmt[0]), compact(stmt[1]), compact(stmt[2]))
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61 class Reasoning(object):
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62 ruleStore: ConjunctiveGraph
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63
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64 def __init__(self, mockOutput=False):
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65 self.prevGraph = None
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67 self.rulesN3 = "(not read yet)"
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68 self.inferred = Graph() # gets replaced in each graphChanged call
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69 self.outputGraph = PatchableGraph() # copy of inferred, for now
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71 self.inputGraph = InputGraph([], self.graphChanged)
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72 self.actions = Actions(self.inputGraph, sendToLiveClients, mockOutput=mockOutput)
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73 self.inputGraph.updateFileData()
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74
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75 @UPDATE_RULES_CALLS.time()
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76 def updateRules(self):
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77 rulesPath = 'rules.n3'
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78 try:
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79 t1 = time.time()
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80 self.rulesN3, self.ruleStore = readRules(
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81 rulesPath,
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82 outputPatterns=[
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83 # Incomplete. See escapeoutputstatements.py for
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84 # explanation.
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85 (None, ROOM['brightness'], None),
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86 (None, ROOM['playState'], None),
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87 (None, ROOM['powerState'], None),
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88 (None, ROOM['state'], None),
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89 ])
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90 ruleParseTime = time.time() - t1
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91 except ValueError:
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92 # this is so if you're just watching the inferred output,
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93 # you'll see the error too
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94 self.inferred = Graph()
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95 self.inferred.add((ROOM['reasoner'], ROOM['ruleParseError'], Literal(traceback.format_exc())))
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96 self.copyOutput()
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97 raise
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98 return [(ROOM['reasoner'], ROOM['ruleParseTime'], Literal(ruleParseTime))], ruleParseTime
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99
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100 @GRAPH_CHANGED_CALLS.time()
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101 def graphChanged(self, inputGraph: InputGraph, oneShot=False, oneShotGraph: Graph = None):
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102 """
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103 If we're getting called for a oneShot event, the oneShotGraph
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104 statements are already in inputGraph.getGraph().
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105 """
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106 log.info("----------------------")
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107 log.info("graphChanged (oneShot=%s %s stmts):", oneShot, len(oneShotGraph) if oneShotGraph is not None else 0)
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108 if oneShotGraph:
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109 for stmt in oneShotGraph:
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110 log.info(" oneshot -> %s", ntStatement(stmt))
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111 t1 = time.time()
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112 oldInferred = self.inferred
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113 try:
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114 ruleStatStmts, ruleParseSec = self.updateRules()
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115
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116 self.inferred, inferSec = self._makeInferred(inputGraph.getGraph())
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117
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118 self.inferred += unquoteOutputStatements(self.inferred)
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119
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120 self.inferred += ruleStatStmts
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121
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122 if oneShot:
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123 # It's possible a oneShotGraph statement didn't
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124 # trigger a rule to do something, but was itself the
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125 # output statement. Probably we could just mix in the
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126 # whole inputGraph here and not special-case the
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127 # oneShotGraph.
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128 self.inferred += oneShotGraph
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129
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130 t3 = time.time()
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131 self.actions.putResults(self.inferred)
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132 putResultsTime = time.time() - t3
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133 finally:
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134 if oneShot:
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135 self.inferred = oldInferred
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136 log.info("graphChanged took %.1f ms (rule parse %.1f ms, infer %.1f ms, putResults %.1f ms)" %
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137 ((time.time() - t1) * 1000, ruleParseSec * 1000, inferSec * 1000, putResultsTime * 1000))
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138 if not oneShot:
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139 self.copyOutput()
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140
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141 def copyOutput(self):
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142 self.outputGraph.setToGraph((s, p, o, ROOM['inferred']) for s, p, o in self.inferred)
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143
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144 def _makeInferred(self, inputGraph: ConjunctiveGraph):
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145 t1 = time.time()
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146
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147 out = infer(inputGraph, self.ruleStore)
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148 for p, n in NS.items():
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149 out.bind(p, n, override=True)
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150
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151 inferenceTime = time.time() - t1
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152 out.add((ROOM['reasoner'], ROOM['inferenceTime'], Literal(inferenceTime)))
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153 return out, inferenceTime
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154
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155
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156 class Index(cyclone.web.RequestHandler):
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157
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158 def get(self):
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159 self.set_header("Content-Type", "text/html")
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160 self.write(open('index.html').read())
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161
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162
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163 class ImmediateUpdate(cyclone.web.RequestHandler):
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164
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165 def put(self):
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166 """
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167 request an immediate load of the remote graphs; the thing we
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168 do in the background anyway. No payload.
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169
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170 Using PUT because this is idempotent and retryable and
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171 everything.
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172
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173 todo: this should do the right thing when many requests come
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174 in very quickly
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175 """
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176 log.warn("immediateUpdate from %s %s - ignored", self.request.headers.get('User-Agent', '?'),
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177 self.request.headers['Host'])
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178 self.set_status(202)
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179
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180
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181 class OneShot(cyclone.web.RequestHandler):
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182
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183 def post(self):
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184 """
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185 payload is an rdf graph. The statements are momentarily added
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186 to the input graph for exactly one update.
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187
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188 todo: how do we go from a transition like doorclosed-to-open
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189 to a oneshot event? the upstream shouldn't have to do it. Do
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190 we make those oneshot events here? for every object change?
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191 there are probably special cases regarding startup time when
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192 everything appears to be a 'change'.
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193 """
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194 try:
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195 log.info('POST to oneShot, headers=%s', self.request.headers)
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196 ct = self.request.headers.get('Content-Type', self.request.headers.get('content-type', ''))
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197 dt = self.settings.reasoning.inputGraph.addOneShotFromString(self.request.body, ct)
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198 self.set_header('x-graph-ms', str(1000 * dt))
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199 except Exception as e:
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200 traceback.print_exc()
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201 log.error(e)
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202 raise
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203
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204
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205 # for reuse
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206 class GraphResource(cyclone.web.RequestHandler):
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207
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208 def get(self, which: str):
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209 self.set_header("Content-Type", "application/json")
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210 r = self.settings.reasoning
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211 g = {
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212 'lastInput': r.inputGraph.getGraph(),
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213 'lastOutput': r.inferred,
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214 }[which]
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215 self.write(self.jsonRdf(g))
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216
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217 def jsonRdf(self, g):
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218 return json.dumps(sorted(list(g)))
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219
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220
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221 class NtGraphs(cyclone.web.RequestHandler):
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222 """same as what gets posted above"""
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223
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224 def get(self):
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225 r = self.settings.reasoning
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226 inputGraphNt = r.inputGraph.getGraph().serialize(format="nt")
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227 inferredNt = r.inferred.serialize(format="nt")
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228 self.set_header("Content-Type", "application/json")
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229 self.write(json.dumps({"input": inputGraphNt, "inferred": inferredNt}))
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230
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231
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232 class Rules(cyclone.web.RequestHandler):
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233
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234 def get(self):
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235 self.set_header("Content-Type", "text/plain")
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236 self.write(self.settings.reasoning.rulesN3)
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237
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238
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239 class Status(cyclone.web.RequestHandler):
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240
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241 def get(self):
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242 self.set_header("Content-Type", "text/plain")
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243 g = self.settings.reasoning.inputGraph.getGraph()
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244 msg = ""
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245 for badSource in g.subjects(RDF.type, ROOM['FailedGraphLoad']):
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246 msg += "GET %s failed (%s). " % (badSource, g.value(badSource, ROOM['graphLoadError']))
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247 if not msg:
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248 self.finish("all inputs ok")
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249 return
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250 self.set_status(500)
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251 self.finish(msg)
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252
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253
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254 class Static(cyclone.web.RequestHandler):
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255
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256 def get(self, p: str):
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257 self.write(open(p).read())
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258
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259
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260 liveClients: Set[cyclone.websocket.WebSocketHandler] = set()
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261
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262
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263 def sendToLiveClients(d: Dict[str, object] = None, asJson: Optional[str] = None):
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264 j = asJson or json.dumps(d)
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265 for c in liveClients:
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266 c.sendMessage(j)
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267
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268
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269 class Events(cyclone.websocket.WebSocketHandler):
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270
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271 def connectionMade(self, *args, **kwargs):
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272 log.info("websocket opened")
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273 liveClients.add(self)
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274
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275 def connectionLost(self, reason):
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276 log.info("websocket closed")
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277 liveClients.remove(self)
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278
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279 def messageReceived(self, message):
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280 log.info("got message %s" % message)
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281
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282
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283 class Metrics(cyclone.web.RequestHandler):
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284
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285 def get(self):
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286 self.add_header('content-type', 'text/plain')
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287 self.write(generate_latest(REGISTRY))
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288
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289
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290 class Application(cyclone.web.Application):
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291
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292 def __init__(self, reasoning):
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293 handlers = [
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294 (r"/", Index),
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295 (r"/immediateUpdate", ImmediateUpdate),
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296 (r"/oneShot", OneShot),
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297 (r'/putOutputs', PutOutputsTable),
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298 (r'/(jquery.min.js)', Static),
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299 (r'/(lastInput|lastOutput)Graph', GraphResource),
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300 (r"/graph/reasoning", CycloneGraphHandler, {
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301 'masterGraph': reasoning.outputGraph
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302 }),
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303 (r"/graph/reasoning/events", CycloneGraphEventsHandler, {
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304 'masterGraph': reasoning.outputGraph
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305 }),
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306 (r'/ntGraphs', NtGraphs),
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307 (r'/rules', Rules),
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308 (r'/status', Status),
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309 (r'/events', Events),
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310 (r'/metrics', Metrics),
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311 ]
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312 cyclone.web.Application.__init__(self, handlers, reasoning=reasoning)
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313
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314
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315 def configLogging(arg):
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316 log.setLevel(WARN)
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317
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318 if arg['-i'] or arg['-r'] or arg['-o'] or arg['-v']:
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319 log.handlers[0].setFormatter(
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320 ColoredFormatter(
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321 "%(log_color)s%(levelname)-8s %(name)-6s %(filename)-12s:%(lineno)-3s %(funcName)-20s%(reset)s %(white)s%(message)s",
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322 datefmt=None,
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323 reset=True,
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324 log_colors={
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325 'DEBUG': 'cyan',
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326 'INFO': 'green',
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327 'WARNING': 'yellow',
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328 'ERROR': 'red',
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329 'CRITICAL': 'red,bg_white',
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330 },
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331 secondary_log_colors={},
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332 style='%'))
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333 defer.setDebugging(True)
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334
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335 if arg['-i']:
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336 import twisted.python.log
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337 twisted.python.log.startLogging(sys.stdout)
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338
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339 getLogger('fetch').setLevel(DEBUG if arg['-i'] else WARN)
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340 log.setLevel(DEBUG if arg['-r'] else WARN)
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341 getLogger('output').setLevel(DEBUG if arg['-o'] else WARN)
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342
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343
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344 if __name__ == '__main__':
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345 arg = docopt("""
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346 Usage: reasoning.py [options]
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347
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348 -i Verbose log on the input phase
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349 -r Verbose log on the reasoning phase and web stuff
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350 -o Verbose log on the actions/output phase
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351 -v Everywhere verbose
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352 --mockoutput Don't make outgoing requests
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353 """)
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354
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355 r = Reasoning(arg['--mockoutput'])
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356 configLogging(arg)
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357 reactor.listenTCP(9071, Application(r), interface='::')
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358 reactor.run()