def __init__(self, config):
self.config_ = config
self.logger_ = logging.getLogger("main")
self.stdout = sys.stdout
self.extractor = LdaFeatureExtractor(prefix=config['prefix'])
def test_get_feature_number(self):
feature_extractor = LdaFeatureExtractor(prefix=self.config['prefix'])
num_topics = feature_extractor.get_feature_number()
self.assertEqual(500, num_topics)
class StompListener(object):
def __init__(self, config):
self.config_ = config
self.logger_ = logging.getLogger("main")
self.stdout = sys.stdout
self.extractor = LdaFeatureExtractor(prefix=config['prefix'])
def __print_async(self, frame_type, headers, body):
"""
Utility function to print a message and setup the command prompt
for the next input
"""
self.__sysout("\r \r", end='')
self.__sysout(frame_type)
for header_key in headers.keys():
self.__sysout('%s: %s' % (header_key, headers[header_key]))
self.__sysout('')
self.__sysout(body)
self.__sysout('> ', end='')
self.stdout.flush()
def __extract_features(self, message):
"""
Extracts features from clean content and sends it on
"""
self.logger_.debug("Got article '%s'" % message['headline'])
features = self.extractor.get_features(message['clean_content'])
version = self.extractor.get_version()
#add features to json representation of article
message['features'] = {'version': version,
'data': features}
#send message on to Article Ranker
try:
self.conn_.send(json.dumps(message), destination="queue/features")
except Exception as inst:
self.logger_.error("Could not send message to feature queue. "
"Unknown Error %s: %s" % (type(inst), inst))
def on_error(self, hears, message):
self.logger_.error('received an error %s' % message)
def on_message(self, headers, message):
received_message = json.loads(message)
self.__extract_features(received_message)
def on_connected(self, headers, body):
self.__print_async("CONNECTED", headers, body)
def __sysout(self, msg, end="\n"):
self.stdout.write(str(msg) + end)
def __error(self, msg, end="\n"):
self.stdout.write(str(msg) + end)
def set_stomp_connection(self, connection):
self.conn_ = connection