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timeline: add cache of floats between graph updates for smoother redraws Ignore-this: dbdc4782855087f4ec12f1d24d440484
author Drew Perttula <drewp@bigasterisk.com>
date Wed, 12 Apr 2017 06:04:18 +0000
parents 6fd81bd4b4a7
children a5a44077c54c
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1 #!bin/python
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2 """
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3 live web display of all existing subs with pictures, mainly for
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4 dragging them into CC
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5 """
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6 from run_local import log
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7 import sys, optparse, logging, json, subprocess, datetime
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8 from dateutil.tz import tzlocal
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9 from twisted.internet import reactor, defer
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10 import cyclone.web, cyclone.httpclient, cyclone.websocket
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11 from rdflib import RDF, URIRef, Literal
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12 import pyjade.utils
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13 from light9.rdfdb.syncedgraph import SyncedGraph
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14 from light9.rdfdb.patch import Patch
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15 from light9.namespaces import L9, DCTERMS
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16 from light9 import networking, showconfig
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17
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18 from lib.cycloneerr import PrettyErrorHandler
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19
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20 liveClients = set()
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21 def sendToLiveClients(d=None, asJson=None):
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22 j = asJson or json.dumps(d)
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23 for c in liveClients:
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24 c.sendMessage(j)
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25
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26 class Live(cyclone.websocket.WebSocketHandler):
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27 def connectionMade(self, *args, **kwargs):
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28 log.info("websocket opened")
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29 liveClients.add(self)
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30 self.settings.onNewClient()
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31
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32 def connectionLost(self, reason):
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33 log.info("websocket closed")
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34 liveClients.remove(self)
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35
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36 def messageReceived(self, message):
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37 log.info("got message %s" % message)
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38 self.sendMessage(message)
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39
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40 class EffectsUpdates(cyclone.websocket.WebSocketHandler):
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41 def connectionMade(self, *args, **kwargs):
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42 self.connected = True
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43 self.settings.graph.addHandler(self.onGraphChange)
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44
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45 def connectionLost(self, reason):
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46 self.connected = False
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47
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48 def onGraphChange(self):
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49 if not self.connected:
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50 return
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51 graph = self.settings.graph
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52 classes = []
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53 for e in graph.subjects(RDF.type, L9['Effect']):
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54 classes.append({'uri': e,
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55 'label': graph.label(e),
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56 'code': graph.value(e, L9['code'])})
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57 self.sendMessage({'classes': classes})
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58
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59 class Static(PrettyErrorHandler, cyclone.web.StaticFileHandler):
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60 def get(self, path, *args, **kw):
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61 if path in ['', 'effects']:
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62 return self.respondStaticJade("light9/subserver/%s.jade" %
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63 (path or 'index'))
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64
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65 if path.endswith(".js"):
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66 return self.responseStaticCoffee(
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67 'light9/subserver/%s' %
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68 path.replace(".js", ".coffee")) # potential security hole
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69
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70 cyclone.web.StaticFileHandler.get(self, path, *args, **kw)
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71
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72 def respondStaticJade(self, src):
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73 html = pyjade.utils.process(open(src).read())
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74 self.write(html)
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75
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76 def responseStaticCoffee(self, src):
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77 self.write(subprocess.check_output([
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78 '/usr/bin/coffee', '--compile', '--print', src]))
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79
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80 class Snapshot(PrettyErrorHandler, cyclone.web.RequestHandler):
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81 @defer.inlineCallbacks
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82 def post(self):
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83 about = URIRef(self.get_argument("about"))
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84 response = yield cyclone.httpclient.fetch(networking.vidref.path("snapshot"), method="POST", timeout=1)
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85
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86 snapUri = URIRef(json.loads(response.body)['snapshot'])
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87 # vidref could write about when it was taken, etc. would it be
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88 # better for us to tell vidref where to attach the result in
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89 # the graph, and then it doesn't even have to return anything?
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90
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91 ctx = showconfig.showUri() + "/snapshots"
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92
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93 self.settings.graph.patch(Patch(addQuads=[
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94 (about, L9['image'], snapUri, ctx),
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95 (snapUri, DCTERMS['created'],
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96 Literal(datetime.datetime.now(tzlocal())), ctx),
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97 ]))
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98
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99 self.write(json.dumps({'snapshot': snapUri}))
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100
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101 def newestImage(subject):
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102 newest = (None, None)
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103 for img in graph.objects(subject, L9['image']):
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104 created = graph.value(img, DCTERMS['created'])
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105 if created > newest[0]:
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106 newest = (created, img)
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107 return newest[1]
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108
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109 if __name__ == "__main__":
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110 parser = optparse.OptionParser()
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111 parser.add_option("-v", "--verbose", action="store_true",
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112 help="logging.DEBUG")
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113 (options, args) = parser.parse_args()
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114
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115 log.setLevel(logging.DEBUG if options.verbose else logging.INFO)
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116
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117 graph = SyncedGraph(networking.rdfdb.url, "subServer")
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118
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119 d = {}
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120 def updateSubs():
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121 subs = []
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122 for sub in sorted(graph.subjects(RDF.type, L9['Submaster'])):
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123 rec = {'uri' : sub}
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124 rec['isLocal'] = graph.contains((sub, RDF.type,
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125 L9['LocalSubmaster']))
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126 rec['label'] = graph.label(sub)
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127 rec['img'] = newestImage(sub)
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128 subs.append(rec)
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129
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130 d.clear()
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131 d.update({'subs': subs})
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132
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133 d['chases'] = []
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134 for chase in sorted(graph.subjects(RDF.type, L9['Chase'])):
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135 fakeLabel = chase.rsplit('/', 1)[-1]
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136 d['chases'].append({
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137 'uri': chase,
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138 'label': fakeLabel,
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139 })
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140
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141 sendToLiveClients(d=d)
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142 def onNewClient():
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143 sendToLiveClients(d=d)
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144
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145 graph.addHandler(updateSubs)
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146
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147
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148 port = networking.subServer.port
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149 reactor.listenTCP(port, cyclone.web.Application(handlers=[
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150 (r'/live', Live),
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151 (r'/effectsUpdates', EffectsUpdates),
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152 (r'/snapshot', Snapshot),
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153 (r'/(.*)', Static,
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154 {"path" : "light9/subserver",
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155 "default_filename" : "index.jade"}),
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156 ], debug=True, graph=graph, onNewClient=onNewClient))
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157 log.info("serving on %s" % port)
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158 reactor.run()