e9a7a3858a
This change implements custom check for Kafka Service. This creates test topic, several messages are sending. Change-Id: If6013ecc6a173b99ced68722775fbe30702943c5
49 lines
1.5 KiB
Python
49 lines
1.5 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
|
# implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
from __future__ import print_function
|
|
|
|
import sys
|
|
|
|
from pyspark import SparkContext
|
|
from pyspark.streaming.kafka import KafkaUtils
|
|
from pyspark.streaming import StreamingContext
|
|
|
|
|
|
def main():
|
|
if len(sys.argv) != 4:
|
|
print("Usage: kafka_wordcount.py <zk> <topic> <timeout>",
|
|
file=sys.stderr)
|
|
exit(-1)
|
|
|
|
sc = SparkContext(appName="PythonStreamingKafkaWordCount")
|
|
ssc = StreamingContext(sc, 1)
|
|
timeout = None
|
|
if len(sys.argv) == 4:
|
|
zk, topic, timeout = sys.argv[1:]
|
|
timeout = int(timeout)
|
|
else:
|
|
zk, topic = sys.argv[1:]
|
|
kvs = KafkaUtils.createStream(
|
|
ssc, zk, "spark-streaming-consumer", {topic: 1})
|
|
lines = kvs.map(lambda x: x[1])
|
|
counts = lines.flatMap(lambda line: (line.split(" "))
|
|
.map(lambda word: (word, 1))
|
|
.reduceByKey(lambda a, b: a+b))
|
|
counts.pprint()
|
|
kwargs = {}
|
|
if timeout:
|
|
kwargs['timeout'] = timeout
|
|
ssc.start()
|
|
ssc.awaitTermination(**kwargs)
|