class SentimentDetector(Bolt):
def initialize(self, storm_conf, context):
self.text_analyzer = TextAnalyzer()
def process(self, tup):
try:
message = Message(tup.values[0])
rank = self.text_analyzer.calc_sentiment(message.text)
message.rank = rank
if rank > 0:
stream = "pro"
else:
stream = "con"
self.emit([rank , message.serialize()], stream = stream)
except:
import sys, traceback
msg = "Unexpected SentimentBolt (action: %d) error:%s" % (action_num, "\n".join(traceback.format_exception(*sys.exc_info())))
self.logger.error(msg)
def initialize(self, storm_conf, context):
self.text_analyzer = TextAnalyzer()