TopicConfigHandler¶

TopicConfigHandler is a ConfigHandler.

Creating Instance¶

TopicConfigHandler takes the following to be created:

• LogManager
• KafkaConfig
• QuotaManagers
• Optional KafkaController

TopicConfigHandler is created when:

• BrokerServer is requested to startup (and create dynamicConfigHandlers)
• KafkaServer is requested to startup (and create dynamicConfigHandlers)

processConfigChanges¶

processConfigChanges(
  topic: String,
  topicConfig: Properties): Unit

processConfigChanges is part of the ConfigHandler abstraction.

processConfigChanges...FIXME

Logging¶

Enable ALL logging level for kafka.server.TopicConfigHandler logger to see what happens inside.

Add the following line to config/log4j.properties:

log4j.logger.kafka.server.TopicConfigHandler=ALL

Refer to Logging.