def metadata(self):
# istreams is an array that expects tuples of a type: (string, StreamGrouping).
# In this example there are multiple istreams, therefore this computation is performing
# a type of stream join.
# The GROUP_BY enum instructs the framework that an aggregation by key is to be performed.
# This ensures that records with the same key are always sent to the same instance of
# this operator.
# By aggregating two streams by key we can be assured that records from any stream emitted
# on a particular provider will always be sent to the same instance of CtrCalculator.
return Metadata(
name='ctr-calculator',
istreams=[ ('impressions', StreamGrouping.GROUP_BY),
('clicks', StreamGrouping.GROUP_BY) ]
ostreams=[ 'click_through_rate' ])
def metadata(self):
return Metadata(name=self.name, istreams=[], ostreams=self.ostreams)
def metadata(self):
return Metadata(name='coinbase-indx', istreams=[], ostreams=['btcusd'])
def metadata(self):
return Metadata(name='first', istreams=[], ostreams=["outstream"])
def metadata(self):
return Metadata(name='cyclical',
istreams=[("cycle", StreamGrouping.GROUP_BY)],
ostreams=["cycle"])
def metadata(self):
return Metadata(name='sentence-splitter',
istreams=['sentences'],
ostreams=['words'])
def metadata(self):
return Metadata(name="gatherer",
istreams=["nothing_going_here"],
ostreams=[])
def metadata(self):
return Metadata(
name='something',
istreams=[],
ostreams=["outputstream"])
def metadata(self):
return Metadata(name=self.name,
istreams=[],
ostreams=["nothing_going_here"])
def metadata(self):
return Metadata(name='sentence-generator',
istreams=[],
ostreams=['sentences'])
def metadata(self):
return Metadata(
name='BayesianChangepointDetection',
istreams=self.istream,
ostreams=self.ostream)
def metadata(self):
return Metadata(name='coinbase-price-printer',
istreams=['btcusd'],
ostreams=[])
def metadata(self):
return Metadata(name='word-counter',
istreams=[('words', StreamGrouping.GROUP_BY)],
ostreams=[])
def metadata(self):
return Metadata(name='final',
istreams=[("outstream", StreamGrouping.GROUP_BY)],
ostreams=[])