log4j-kafka/src/test/resources/KafkaAppenderTest.xml

<?xml version="1.0" encoding="UTF-8"?>
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<Configuration name="KafkaAppenderTest" status="OFF">
  <Appenders>
    <Kafka name="KafkaAppenderWithLayout" topic="kafka-topic">
      <PatternLayout pattern="[%m]"/>
      <Property name="bootstrap.servers">localhost:9092</Property>
      <Property name="timeout.ms">1000</Property>
    </Kafka>
    <Kafka name="AsyncKafkaAppender" topic="kafka-topic">
      <PatternLayout pattern="%m"/>
      <Property name="bootstrap.servers">localhost:9092</Property>
      <Property name="syncSend">false</Property>
    </Kafka>
    <Kafka name="KafkaAppenderWithKey" topic="kafka-topic" key="key">
      <PatternLayout pattern="%m"/>
      <Property name="timeout.ms">1000</Property>
      <Property name="bootstrap.servers">localhost:9092</Property>
    </Kafka>
    <Kafka name="KafkaAppenderWithKeyLookup" topic="kafka-topic" key="$${date:dd-MM-yyyy}">
      <PatternLayout pattern="%m"/>
      <Property name="timeout.ms">1000</Property>
      <Property name="bootstrap.servers">localhost:9092</Property>
    </Kafka>
    <Kafka name="KafkaAppenderNoEventTimestamp" topic="kafka-topic" key="key" eventTimestamp="false">
      <PatternLayout pattern="%m"/>
      <Property name="timeout.ms">1000</Property>
      <Property name="bootstrap.servers">localhost:9092</Property>
    </Kafka>
  </Appenders>
  <Loggers>
    <Root level="info">
      <AppenderRef ref="KafkaAppenderWithLayout"/>
      <AppenderRef ref="AsyncKafkaAppender"/>
      <AppenderRef ref="KafkaAppenderWithKey"/>
      <AppenderRef ref="KafkaAppenderNoEventTimestamp"/>
    </Root>
  </Loggers>
</Configuration>