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annotate bin/collector @ 1630:2adbc27f77d3

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theater config Ignore-this: bb91223d90437a7f1e496f1d542fe8bb
author drewp@bigasterisk.com
date Sat, 10 Jun 2017 02:07:02 +0000
parents 64c1bcff604e
children 6fa4288da8a6
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1 #!bin/python
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2 """
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3 Collector receives device attrs from multiple senders, combines
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4 them, and sends output attrs to hardware. The combining part has
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5 custom code for some attributes.
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6
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7 Input can be over http or zmq.
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8 """
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9
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10 from __future__ import division
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11 from rdflib import URIRef, Literal
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12 from twisted.internet import reactor, utils
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13 from txzmq import ZmqEndpoint, ZmqFactory, ZmqPullConnection
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14 import json
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15 import logging
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16 import optparse
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17 import time
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18 import traceback
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19 import cyclone.web, cyclone.websocket
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20 from greplin import scales
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21
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22 from run_local import log
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23 from lib.cycloneerr import PrettyErrorHandler
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24 from light9.collector.output import EnttecDmx, Udmx, DummyOutput
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25 from light9.collector.collector import Collector
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26 from light9.namespaces import L9
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27 from light9 import networking
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28 from light9.rdfdb.syncedgraph import SyncedGraph
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29 from light9.greplin_cyclone import StatsForCyclone
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30
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31 def parseJsonMessage(msg):
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32 body = json.loads(msg)
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33 settings = []
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34 for device, attr, value in body['settings']:
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35 if isinstance(value, basestring) and value.startswith('http'):
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36 value = URIRef(value)
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37 else:
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38 value = Literal(value)
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39 settings.append((URIRef(device), URIRef(attr), value))
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40 return body['client'], body['clientSession'], settings, body['sendTime']
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41
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42 def startZmq(port, collector):
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43 stats = scales.collection('/zmqServer',
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44 scales.PmfStat('setAttr'))
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45
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46 zf = ZmqFactory()
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47 addr = 'tcp://*:%s' % port
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48 log.info('creating zmq endpoint at %r', addr)
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49 e = ZmqEndpoint('bind', addr)
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50 s = ZmqPullConnection(zf, e)
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51 def onPull(message):
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52 with stats.setAttr.time():
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53 # todo: new compressed protocol where you send all URIs up
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54 # front and then use small ints to refer to devices and
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55 # attributes in subsequent requests.
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56 client, clientSession, settings, sendTime = parseJsonMessage(message[0])
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57 collector.setAttrs(client, clientSession, settings, sendTime)
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58 s.onPull = onPull
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59
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60 class WebListeners(object):
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61 def __init__(self):
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62 self.clients = []
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63 self.pendingMessageForDev = {} # dev: (attrs, outputmap)
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64 self.lastFlush = 0
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65
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66 def addClient(self, client):
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67 self.clients.append([client, {}]) # seen = {dev: attrs}
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68 log.info('added client %s', client)
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69
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70 def delClient(self, client):
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71 self.clients = [[c, t] for c, t in self.clients if c != client]
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72 log.info('delClient %s, %s left', client, len(self.clients))
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73
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74 def outputAttrsSet(self, dev, attrs, outputMap):
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75 """called often- don't be slow"""
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76
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77 self.pendingMessageForDev[dev] = (attrs, outputMap)
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78 self._flush()
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79
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80 def _flush(self):
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81 now = time.time()
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82 if now < self.lastFlush + .05 or not self.clients:
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83 return
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84 self.lastFlush = now
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85
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86 while self.pendingMessageForDev:
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87 dev, (attrs, outputMap) = self.pendingMessageForDev.popitem()
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88
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89 msg = None # lazy, since makeMsg is slow
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90
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91 # this omits repeats, but can still send many
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92 # messages/sec. Not sure if piling up messages for the browser
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93 # could lead to slowdowns in the real dmx output.
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94 for client, seen in self.clients:
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95 if seen.get(dev) == attrs:
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96 continue
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97 if msg is None:
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98 msg = self.makeMsg(dev, attrs, outputMap)
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99
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100 seen[dev] = attrs
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101 client.sendMessage(msg)
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102
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103 def makeMsg(self, dev, attrs, outputMap):
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104 attrRows = []
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105 for attr, val in attrs.items():
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106 output, index = outputMap[(dev, attr)]
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107 attrRows.append({'attr': attr.rsplit('/')[-1],
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108 'val': val,
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109 'chan': (output.shortId(), index + 1)})
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110 attrRows.sort(key=lambda r: r['chan'])
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111 for row in attrRows:
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112 row['chan'] = '%s %s' % (row['chan'][0], row['chan'][1])
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113
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114 msg = json.dumps({'outputAttrsSet': {'dev': dev, 'attrs': attrRows}}, sort_keys=True)
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115 return msg
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116
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117 class Updates(cyclone.websocket.WebSocketHandler):
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118
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119 def connectionMade(self, *args, **kwargs):
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120 log.info('socket connect %s', self)
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121 self.settings.listeners.addClient(self)
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122
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123 def connectionLost(self, reason):
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124 self.settings.listeners.delClient(self)
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125
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126 def messageReceived(self, message):
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127 json.loads(message)
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128
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129 stats = scales.collection('/webServer', scales.PmfStat('setAttr'))
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130
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131 class Attrs(PrettyErrorHandler, cyclone.web.RequestHandler):
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132 def put(self):
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133 with stats.setAttr.time():
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134 client, clientSession, settings, sendTime = parseJsonMessage(self.request.body)
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135 self.settings.collector.setAttrs(client, clientSession, settings, sendTime)
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136 self.set_status(202)
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137
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138
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139
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140 def launch(graph, doLoadTest=False):
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141 try:
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142 # todo: drive outputs with config files
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143 outputs = [
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144 EnttecDmx(L9['output/dmx0/'], '/dev/dmx3', 80),
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145 Udmx(L9['output/udmx/'], 510),
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146 ]
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147 except Exception as e:
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148 log.error("setting up outputs: %r", e)
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149 traceback.print_exc()
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150 raise
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151 listeners = WebListeners()
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152 c = Collector(graph, outputs, listeners)
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153
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154 startZmq(networking.collectorZmq.port, c)
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155
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156 reactor.listenTCP(networking.collector.port,
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157 cyclone.web.Application(handlers=[
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158 (r'/()', cyclone.web.StaticFileHandler,
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159 {"path" : "light9/collector/web", "default_filename" : "index.html"}),
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160 (r'/updates', Updates),
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161 (r'/attrs', Attrs),
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162 (r'/stats', StatsForCyclone),
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163 ], collector=c, listeners=listeners),
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164 interface='::')
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165 log.info('serving http on %s, zmq on %s', networking.collector.port,
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166 networking.collectorZmq.port)
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167 if doLoadTest:
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168 # in a subprocess since we don't want this client to be
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169 # cooperating with the main event loop and only sending
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170 # requests when there's free time
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171 def afterWarmup():
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172 log.info('running collector_loadtest')
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173 d = utils.getProcessValue('bin/python', ['bin/collector_loadtest.py'])
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174 def done(*a):
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175 log.info('loadtest done')
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176 reactor.stop()
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177 d.addCallback(done)
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178 reactor.callLater(2, afterWarmup)
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179
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180 def main():
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181 parser = optparse.OptionParser()
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182 parser.add_option("-v", "--verbose", action="store_true",
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183 help="logging.DEBUG")
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184 parser.add_option("--loadtest", action="store_true",
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185 help="call myself with some synthetic load then exit")
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186 (options, args) = parser.parse_args()
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187 log.setLevel(logging.DEBUG if options.verbose else logging.INFO)
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188
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189 logging.getLogger('colormath').setLevel(logging.INFO)
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190
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191 graph = SyncedGraph(networking.rdfdb.url, "collector")
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192
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193 graph.initiallySynced.addCallback(lambda _: launch(graph, options.loadtest)).addErrback(log.error)
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194 reactor.run()
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195
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196 if __name__ == '__main__':
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197 main()