我正在使用kafka python客户端将消息推送到Message Hub，但是注意到在运行我的应用程序一段时间后它将停止向Message Hub发送消息。
然后我在日志文件中注意到以下内容：
ConnectionError: socket disconnected
我更新了我的代码以添加retries=5：
from kafka import KafkaProducer
from kafka.errors import KafkaError
import ssl
sasl_mechanism = 'PLAIN'
security_protocol = 'SASL_SSL'
# Create a new context using system defaults, disable all but TLS1.2
context = ssl.create_default_context()
context.options &= ssl.OP_NO_TLSv1
context.options &= ssl.OP_NO_TLSv1_1
producer = KafkaProducer(bootstrap_servers = app.config['KAFKA_BROKERS_SASL'],
sasl_plain_username = app.config['KAFKA_USERNAME'],
sasl_plain_password = app.config['KAFKA_PASSWORD'],
security_protocol = security_protocol,
ssl_context = context,
sasl_mechanism = sasl_mechanism,
api_version = (0,10),
retries=5)
def send_message(message):
try:
producer.send(app.config['KAFKA_TOPIC'], message.encode('utf-8'))
# FIXME sending seems to be unreliable unless we flush
producer.flush()
except:
print("Unexpected error:", sys.exc_info()[0])
raise
我的代码来自python flask app。每个进入的特定类型的请求都会调用send_message()方法。
以下是Bluemix的相关日志行。我可能错过了一两行复制和粘贴，但希望它足以弄清楚发生了什么：
APP/1 <BrokerConnection host=kafka01-prod01.messagehub.services.us-south.bluemix.net/23.246.202.51 port=9093>: Authenticated as xxxxx May 15, 2017 8:50:54 PM
APP/1 <BrokerConnection host=kafka01-prod01.messagehub.services.us-south.bluemix.net/23.246.202.51 port=9093>: socket disconnected May 15, 2017 8:50:54 PM
APP/1 Got error produce response on topic-partition TopicPartition(topic='movie_ratings', partition=0), retrying (4 attempts left). Error: ConnectionError: socket disconnectedMay 15, 2017 8:50:54 PM
APP/1 Node 0 connection failed -- refreshing metadata May 15, 2017 8:50:54 PM
APP/1 <BrokerConnection host=kafka01-prod01.messagehub.services.us-south.bluemix.net/23.246.202.51 port=9093>: Authenticated as xxxxxMay 15, 2017 8:50:54 PM
APP/1 <BrokerConnection host=kafka01-prod01.messagehub.services.us-south.bluemix.net/23.246.202.51 port=9093>: socket disconnected May 15, 2017 8:50:54 PM
APP/1 Node 0 connection failed -- refreshing metadata May 15, 2017 8:50:54 PM
APP/1 <BrokerConnection host=kafka01-prod01.messagehub.services.us-south.bluemix.net/23.246.202.51 port=9093>: Authenticated as xxxxx May 15, 2017 8:50:54 PM
APP/1 <BrokerConnection host=kafka01-prod01.messagehub.services.us-south.bluemix.net/23.246.202.51 port=9093>: socket disconnected May 15, 2017 8:50:55 PM
APP/1 Node 0 connection failed -- refreshing metadata May 15, 2017 8:50:55 PM
APP/1 Got error produce response on topic-partition TopicPartition(topic='movie_ratings', partition=0), retrying (2 attempts left). Error: ConnectionError: socket disconnected May 15, 2017 8:50:55 PM
APP/1 <BrokerConnection host=kafka01-prod01.messagehub.services.us-south.bluemix.net/23.246.202.51 port=9093>: Authenticated as xxxxx May 15, 2017 8:50:55 PM
APP/1 <BrokerConnection host=kafka01-prod01.messagehub.services.us-south.bluemix.net/23.246.202.51 port=9093>: socket disconnected May 15, 2017 8:50:55 PM
APP/1 Node 0 connection failed -- refreshing metadata May 15, 2017 8:50:55 PM
APP/1 Got error produce response on topic-partition TopicPartition(topic='movie_ratings', partition=0), retrying (1 attempts left). Error: ConnectionError: socket disconnected May 15, 2017 8:50:55 PM
APP/1 <BrokerConnection host=kafka01-prod01.messagehub.services.us-south.bluemix.net/23.246.202.51 port=9093>: Authenticated as xxxxx May 15, 2017 8:50:55 PM
APP/1 <BrokerConnection host=kafka01-prod01.messagehub.services.us-south.bluemix.net/23.246.202.51 port=9093>: socket disconnected May 15, 2017 8:50:55 PM
APP/1 Got error produce response on topic-partition TopicPartition(topic='movie_ratings', partition=0), retrying (0 attempts left). Error: ConnectionError: socket disconnected May 15, 2017 8:50:55 PM
APP/1 Node 0 connection failed -- refreshing metadata May 15, 2017 8:50:55 PM
APP/1 <BrokerConnection host=kafka01-prod01.messagehub.services.us-south.bluemix.net/23.246.202.51 port=9093>: Authenticated as xxxxx May 15, 2017 8:50:55 PM
APP/1 Node 0 connection failed -- refreshing metadata May 15, 2017 8:50:56 PM
APP/1 ConnectionError: socket disconnected May 15, 2017 8:50:56 PM
APP/1 Unable to import 'sasl'. Fallback to 'puresasl'. May 15, 2017 8:51:00 PM
APP/1 Closing active operation May 15, 2017 8:51:01 PM
我的主题存在。我的完整客户端代码位于：https://github.com/snowch/movie-recommender-demo/blob/effc981cc9f799c41952719619f693172eebcd6a/web_app/app/messagehub_client.py
任何指点最受赞赏......