Artyom Krikheli created LOG4J2-2656:
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Summary: Add possibility to ignore exception if kafka connection
error occurred
Key: LOG4J2-2656
URL: https://issues.apache.org/jira/browse/LOG4J2-2656
Project: Log4j 2
Issue Type: Improvement
Components: Appenders
Affects Versions: 2.12.0
Reporter: Artyom Krikheli
Nowadays if we use a log4j2-Kafka-appender with Spring Boot framework and Kafka
is unavailable for some reason, the application crashes. We may have several
appenders (File appender, SYSOUT, etc) and I think that Kafka's inaccessibility
is not a reason for the failure of an application.
{code:java}
Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka
producer at
org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:457)
at
org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:304)
at
org.apache.logging.log4j.core.appender.mom.kafka.DefaultKafkaProducerFactory.newKafkaProducer(DefaultKafkaProducerFactory.java:40)
at
org.apache.logging.log4j.core.appender.mom.kafka.KafkaManager.startup(KafkaManager.java:131)
at
org.apache.logging.log4j.core.appender.mom.kafka.KafkaAppender.start(KafkaAppender.java:175)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:266)
at
org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:547)
at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:263)
at
org.springframework.boot.logging.log4j2.Log4J2LoggingSystem.loadConfiguration(Log4J2LoggingSystem.java:175)
{code}
I can offer to add a special boolean property to logger config named
*ignoreKafkaConnectionError* and in depends on its value we can either catch
kafka exceptions occurred while producer creating or not.
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