def patch(self, p):
"""send this patch to the server and apply it to our local
graph and run handlers"""
if p.isNoop():
log.info("skipping no-op patch")
return
# these could fail if we're out of sync. One approach:
# Rerequest the full state from the server, try the patch
# again after that, then give up.
debugKey = '[id=%s]' % (id(p) % 1000)
log.debug("\napply local patch %s %s", debugKey, p)
try:
patchQuads(self._graph,
deleteQuads=p.delQuads,
addQuads=p.addQuads,
perfect=True)
except ValueError as e:
log.error(e)
self.sendFailed(None)
return
log.debug('runDepsOnNewPatch')
self.runDepsOnNewPatch(p)
log.debug('sendPatch')
self._sender.sendPatch(p).addErrback(self.sendFailed)
log.debug('patch is done %s', debugKey)
def patch(self, p):
if p.isNoop():
return
patchQuads(self._graph,
deleteQuads=p.delQuads,
addQuads=p.addQuads,
perfect=False) # true?
for ob in self._observers:
ob(patchAsJson(p))
def _onPatch(self, p):
"""
central server has sent us a patch
"""
log.debug('_onPatch server has sent us %s', p)
patchQuads(self._graph, p.delQuads, p.addQuads, perfect=True)
log.debug("graph now has %s statements" % len(self._graph))
try:
self.runDepsOnNewPatch(p)
except Exception:
# don't reflect this error back to the server; we did
# receive its patch correctly. However, we're in a bad
# state since some dependencies may not have rerun
traceback.print_exc()
log.warn("some graph dependencies may not have completely run")
if self.initiallySynced:
self.initiallySynced.callback(None)
self.initiallySynced = None
def onPatch(self, p, fullGraph):
if fullGraph:
self.graph = ConjunctiveGraph()
patchQuads(self.graph,
deleteQuads=p.delQuads,
addQuads=p.addQuads,
perfect=True)
ignorePredicates = [
ROOM['signalStrength'],
# perhaps anything with a number-datatype for its
# object should be filtered out, and you have to make
# an upstream quantization (e.g. 'temp high'/'temp
# low') if you want to do reasoning on the difference
URIRef("http://bigasterisk.com/map#lastSeenAgoSec"),
URIRef("http://bigasterisk.com/map#lastSeenAgo"),
ROOM['usingPower'],
ROOM['idleTimeMinutes'],
ROOM['idleTimeMs'],
ROOM['graphLoadMs'],
ROOM['localTimeToSecond'],
ROOM['history'],
ROOM['temperatureF'],
ROOM['connectedAgo'],
RDFS['comment'],
]
ignoreContexts = [
URIRef('http://bigasterisk.com/sse_collector/'),
]
for affected in p.addQuads + p.delQuads:
if (affected[1] not in ignorePredicates and
affected[3] not in ignoreContexts):
log.debug(" remote graph changed")
self.onChange()
break
else:
log.debug(" remote graph has no changes to trigger rules")
