Mercurial > code > home > repos > homeauto
annotate service/reasoning/inputgraph.py @ 1411:21d0cd98ef7a
mock output mode
Ignore-this: a7b9dd184a2f3c811cd7c1d3ca4a002c
darcs-hash:af6eb3949372201ed9b414ce038849c4ce8423cf
| author | drewp <drewp@bigasterisk.com> |
|---|---|
| date | Wed, 24 Jul 2019 00:34:41 -0700 |
| parents | ac127fdace62 |
| children | b87b6e9cedb2 |
| rev | line source |
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1 import logging, time, sys |
| 1080 | 2 |
| 3 from rdflib import Graph, ConjunctiveGraph | |
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4 from rdflib import Namespace, URIRef, Literal, RDF, RDFS |
| 1086 | 5 from rdflib.parser import StringInputSource |
| 1080 | 6 |
| 7 from twisted.python.filepath import FilePath | |
| 8 from twisted.internet.defer import inlineCallbacks, gatherResults | |
| 9 | |
| 10 from rdflibtrig import addTrig | |
| 11 from graphop import graphEqual | |
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12 from greplin import scales |
| 1080 | 13 |
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14 from patchablegraph.patchsource import ReconnectingPatchSource |
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15 |
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16 from rdfdb.rdflibpatch import patchQuads |
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17 |
| 1080 | 18 log = logging.getLogger('fetch') |
| 19 | |
| 20 ROOM = Namespace("http://projects.bigasterisk.com/room/") | |
| 21 DEV = Namespace("http://projects.bigasterisk.com/device/") | |
| 22 | |
| 23 | |
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24 STATS = scales.collection('/web', |
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25 scales.PmfStat('combineGraph'), |
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26 ) |
| 1086 | 27 def parseRdf(text, contentType): |
| 28 g = Graph() | |
| 29 g.parse(StringInputSource(text), format={ | |
| 30 'text/n3': 'n3', | |
| 31 }[contentType]) | |
| 32 return g | |
| 33 | |
| 34 | |
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35 class RemoteData(object): |
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36 def __init__(self, onChange): |
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37 self.onChange = onChange |
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38 self.graph = ConjunctiveGraph() |
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39 self.patchSource = ReconnectingPatchSource( |
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40 URIRef('http://bang:9072/graph/home'), |
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41 #URIRef('http://frontdoor:10012/graph/events'), |
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42 self.onPatch, reconnectSecs=10, agent='reasoning') |
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43 |
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44 def onPatch(self, p, fullGraph): |
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45 if fullGraph: |
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46 self.graph = ConjunctiveGraph() |
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47 patchQuads(self.graph, |
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48 deleteQuads=p.delQuads, |
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49 addQuads=p.addQuads, |
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50 perfect=True) |
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51 |
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52 ignorePredicates = [ |
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53 ROOM['signalStrength'], |
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54 # perhaps anything with a number-datatype for its |
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55 # object should be filtered out, and you have to make |
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56 # an upstream quantization (e.g. 'temp high'/'temp |
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57 # low') if you want to do reasoning on the difference |
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58 URIRef("http://bigasterisk.com/map#lastSeenAgoSec"), |
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59 URIRef("http://bigasterisk.com/map#lastSeenAgo"), |
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60 ROOM['usingPower'], |
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61 ROOM['idleTimeMinutes'], |
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62 ROOM['idleTimeMs'], |
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63 ROOM['graphLoadMs'], |
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64 ROOM['localTimeToSecond'], |
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65 ROOM['history'], |
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66 ROOM['connectedAgo'], |
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67 RDFS['comment'], |
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68 ] |
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69 ignoreContexts = [ |
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70 URIRef('http://bigasterisk.com/sse_collector/'), |
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71 ] |
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72 for affected in p.addQuads + p.delQuads: |
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73 if (affected[1] not in ignorePredicates and |
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74 affected[3] not in ignoreContexts): |
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75 log.debug(" remote graph changed") |
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76 self.onChange() |
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77 break |
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78 else: |
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79 log.debug(" remote graph has no changes to trigger rules") |
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80 |
| 1080 | 81 class InputGraph(object): |
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82 def __init__(self, inputDirs, onChange): |
| 1080 | 83 """ |
| 84 this has one Graph that's made of: | |
| 85 - all .n3 files from inputDirs (read at startup) | |
| 86 - all the remote graphs, specified in the file graphs | |
| 87 | |
| 88 call updateFileData or updateRemoteData to reread those | |
| 89 graphs. getGraph to access the combined graph. | |
| 90 | |
| 91 onChange(self) is called if the contents of the full graph | |
| 92 change (in an interesting way) during updateFileData or | |
| 93 updateRemoteData. Interesting means statements other than the | |
| 94 ones with the predicates on the boring list. onChange(self, | |
| 95 oneShot=True) means: don't store the result of this change | |
| 96 anywhere; it needs to be processed only once | |
| 97 """ | |
| 98 self.inputDirs = inputDirs | |
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99 self._onChange = onChange |
| 1080 | 100 self._fileGraph = Graph() |
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101 self._remoteData = RemoteData(lambda: self.onChangeLocal()) |
| 1080 | 102 self._combinedGraph = None |
| 103 self._oneShotAdditionGraph = None | |
| 104 | |
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105 def onChangeLocal(self, oneShot=False, oneShotGraph=None): |
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106 self._combinedGraph = None |
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107 self._onChange(self, oneShot=oneShot, oneShotGraph=oneShotGraph) |
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108 |
| 1080 | 109 def updateFileData(self): |
| 110 """ | |
| 111 make sure we contain the correct data from the files in inputDirs | |
| 112 """ | |
| 113 # this sample one is actually only needed for the output, but I don't | |
| 114 # think I want to have a separate graph for the output | |
| 115 # handling | |
| 116 log.debug("read file graphs") | |
| 117 for fp in FilePath("input").walk(): | |
| 118 if fp.isdir(): | |
| 119 continue | |
| 120 if fp.splitext()[1] != '.n3': | |
| 121 continue | |
| 122 log.debug("read %s", fp) | |
| 123 # todo: if this fails, leave the report in the graph | |
| 124 self._fileGraph.parse(fp.open(), format="n3") | |
| 125 self._combinedGraph = None | |
| 126 | |
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127 self.onChangeLocal() |
| 1080 | 128 |
| 129 def addOneShot(self, g): | |
| 130 """ | |
| 131 add this graph to the total, call onChange, and then revert | |
| 132 the addition of this graph | |
| 133 """ | |
| 134 self._oneShotAdditionGraph = g | |
| 135 self._combinedGraph = None | |
| 136 try: | |
| 1119 | 137 self.onChangeLocal(oneShot=True, oneShotGraph=g) |
| 1080 | 138 finally: |
| 139 self._oneShotAdditionGraph = None | |
| 140 self._combinedGraph = None | |
| 141 | |
| 1086 | 142 def addOneShotFromString(self, body, contentType): |
| 143 g = parseRdf(body, contentType) | |
| 144 if not len(g): | |
| 145 log.warn("incoming oneshot graph had no statements: %r", body) | |
| 146 return 0 | |
| 147 t1 = time.time() | |
| 148 self.addOneShot(g) | |
| 149 return time.time() - t1 | |
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150 |
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151 @STATS.combineGraph.time() |
| 1080 | 152 def getGraph(self): |
| 153 """rdflib Graph with the file+remote contents of the input graph""" | |
| 154 # this could be much faster with the combined readonly graph | |
| 155 # view from rdflib | |
| 156 if self._combinedGraph is None: | |
| 157 self._combinedGraph = Graph() | |
| 158 if self._fileGraph: | |
| 159 for s in self._fileGraph: | |
| 160 self._combinedGraph.add(s) | |
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161 for s in self._remoteData.graph: |
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162 self._combinedGraph.add(s) |
| 1080 | 163 if self._oneShotAdditionGraph: |
| 164 for s in self._oneShotAdditionGraph: | |
| 165 self._combinedGraph.add(s) | |
| 166 | |
| 167 return self._combinedGraph |