// Validate consumer config, maybe sarama can expose a public ConsumerConfig.Validate() one day
func validateConsumerConfig(config *sarama.ConsumerConfig) error {
if config.DefaultFetchSize < 0 {
return sarama.ConfigurationError("Invalid DefaultFetchSize")
} else if config.DefaultFetchSize == 0 {
config.DefaultFetchSize = 1024
}
if config.MinFetchSize < 0 {
return sarama.ConfigurationError("Invalid MinFetchSize")
} else if config.MinFetchSize == 0 {
config.MinFetchSize = 1
}
if config.MaxWaitTime <= 0 {
return sarama.ConfigurationError("Invalid MaxWaitTime")
} else if config.MaxWaitTime < 100 {
sarama.Logger.Println("ConsumerConfig.MaxWaitTime is very low, which can cause high CPU and network usage. See sarama documentation for details.")
}
if config.MaxMessageSize < 0 {
return sarama.ConfigurationError("Invalid MaxMessageSize")
} else if config.EventBufferSize < 0 {
return sarama.ConfigurationError("Invalid EventBufferSize")
}
return nil
}
