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annotate service/reasoning/inputgraph.py @ 1156:ee168d55524a
reasoning & collector move into docker images
Ignore-this: 67e97d307eba96791cbe77e57c57ad57
darcs-hash:47056d579a870b473e95f4eb7897aae0a97c03cc
| author | drewp <drewp@bigasterisk.com> |
|---|---|
| date | Mon, 03 Sep 2018 00:45:34 -0700 |
| parents | 98aad873874d |
| children | 79d041273e26 |
| 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 | |
| 12 | |
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13 from patchsource import ReconnectingPatchSource |
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14 |
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15 sys.path.append("/my/proj/rdfdb") |
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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 | |
| 1086 | 24 def parseRdf(text, contentType): |
| 25 g = Graph() | |
| 26 g.parse(StringInputSource(text), format={ | |
| 27 'text/n3': 'n3', | |
| 28 }[contentType]) | |
| 29 return g | |
| 30 | |
| 31 | |
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32 class RemoteData(object): |
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33 def __init__(self, onChange): |
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34 self.onChange = onChange |
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35 self.graph = ConjunctiveGraph() |
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36 self.patchSource = ReconnectingPatchSource(URIRef('http://bang:9072/graph/home'), self.onPatch) |
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37 |
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38 def onPatch(self, p, fullGraph): |
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39 if fullGraph: |
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40 self.graph = ConjunctiveGraph() |
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41 patchQuads(self.graph, |
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42 deleteQuads=p.delQuads, |
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43 addQuads=p.addQuads, |
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44 perfect=True) |
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45 |
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46 ignorePredicates = [ |
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47 ROOM['signalStrength'], |
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48 # perhaps anything with a number-datatype for its |
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49 # object should be filtered out, and you have to make |
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50 # an upstream quantization (e.g. 'temp high'/'temp |
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51 # low') if you want to do reasoning on the difference |
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52 URIRef("http://bigasterisk.com/map#lastSeenAgoSec"), |
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53 URIRef("http://bigasterisk.com/map#lastSeenAgo"), |
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54 ROOM['usingPower'], |
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55 ROOM['idleTimeMinutes'], |
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56 ROOM['idleTimeMs'], |
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57 ROOM['graphLoadMs'], |
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58 ROOM['localTimeToSecond'], |
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59 ROOM['history'], |
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60 ROOM['temperatureF'], |
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61 ROOM['connectedAgo'], |
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62 RDFS['comment'], |
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63 ] |
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64 ignoreContexts = [ |
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65 URIRef('http://bigasterisk.com/sse_collector/'), |
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66 ] |
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67 for affected in p.addQuads + p.delQuads: |
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68 if (affected[1] not in ignorePredicates and |
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69 affected[3] not in ignoreContexts): |
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70 log.debug(" remote graph changed") |
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71 self.onChange() |
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72 break |
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73 else: |
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74 log.debug(" remote graph has no changes to trigger rules") |
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75 |
| 1080 | 76 class InputGraph(object): |
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77 def __init__(self, inputDirs, onChange): |
| 1080 | 78 """ |
| 79 this has one Graph that's made of: | |
| 80 - all .n3 files from inputDirs (read at startup) | |
| 81 - all the remote graphs, specified in the file graphs | |
| 82 | |
| 83 call updateFileData or updateRemoteData to reread those | |
| 84 graphs. getGraph to access the combined graph. | |
| 85 | |
| 86 onChange(self) is called if the contents of the full graph | |
| 87 change (in an interesting way) during updateFileData or | |
| 88 updateRemoteData. Interesting means statements other than the | |
| 89 ones with the predicates on the boring list. onChange(self, | |
| 90 oneShot=True) means: don't store the result of this change | |
| 91 anywhere; it needs to be processed only once | |
| 92 """ | |
| 93 self.inputDirs = inputDirs | |
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94 self._onChange = onChange |
| 1080 | 95 self._fileGraph = Graph() |
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96 self._remoteData = RemoteData(lambda: self.onChangeLocal()) |
| 1080 | 97 self._combinedGraph = None |
| 98 self._oneShotAdditionGraph = None | |
| 99 | |
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100 def onChangeLocal(self, oneShot=False, oneShotGraph=None): |
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101 self._combinedGraph = None |
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102 self._onChange(self, oneShot=oneShot, oneShotGraph=oneShotGraph) |
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103 |
| 1080 | 104 def updateFileData(self): |
| 105 """ | |
| 106 make sure we contain the correct data from the files in inputDirs | |
| 107 """ | |
| 108 # this sample one is actually only needed for the output, but I don't | |
| 109 # think I want to have a separate graph for the output | |
| 110 # handling | |
| 111 log.debug("read file graphs") | |
| 112 for fp in FilePath("input").walk(): | |
| 113 if fp.isdir(): | |
| 114 continue | |
| 115 if fp.splitext()[1] != '.n3': | |
| 116 continue | |
| 117 log.debug("read %s", fp) | |
| 118 # todo: if this fails, leave the report in the graph | |
| 119 self._fileGraph.parse(fp.open(), format="n3") | |
| 120 self._combinedGraph = None | |
| 121 | |
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122 self.onChangeLocal() |
| 1080 | 123 |
| 124 def addOneShot(self, g): | |
| 125 """ | |
| 126 add this graph to the total, call onChange, and then revert | |
| 127 the addition of this graph | |
| 128 """ | |
| 129 self._oneShotAdditionGraph = g | |
| 130 self._combinedGraph = None | |
| 131 try: | |
| 1119 | 132 self.onChangeLocal(oneShot=True, oneShotGraph=g) |
| 1080 | 133 finally: |
| 134 self._oneShotAdditionGraph = None | |
| 135 self._combinedGraph = None | |
| 136 | |
| 1086 | 137 def addOneShotFromString(self, body, contentType): |
| 138 g = parseRdf(body, contentType) | |
| 139 if not len(g): | |
| 140 log.warn("incoming oneshot graph had no statements: %r", body) | |
| 141 return 0 | |
| 142 t1 = time.time() | |
| 143 self.addOneShot(g) | |
| 144 return time.time() - t1 | |
| 145 | |
| 1080 | 146 def getGraph(self): |
| 147 """rdflib Graph with the file+remote contents of the input graph""" | |
| 148 # this could be much faster with the combined readonly graph | |
| 149 # view from rdflib | |
| 150 if self._combinedGraph is None: | |
| 151 self._combinedGraph = Graph() | |
| 152 if self._fileGraph: | |
| 153 for s in self._fileGraph: | |
| 154 self._combinedGraph.add(s) | |
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155 for s in self._remoteData.graph: |
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156 self._combinedGraph.add(s) |
| 1080 | 157 if self._oneShotAdditionGraph: |
| 158 for s in self._oneShotAdditionGraph: | |
| 159 self._combinedGraph.add(s) | |
| 160 | |
| 161 return self._combinedGraph |