com.linecorp.armeria.server.logging.structured.kafka

Interface KafkaStructuredLoggingService.KeySelector<E>

Enclosing class:

KafkaStructuredLoggingService<I extends com.linecorp.armeria.common.Request,O extends com.linecorp.armeria.common.Response,L>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface KafkaStructuredLoggingService.KeySelector<E>

Implements "key" selector of Kafka based service log writer. Kafka as a notion of the "key" which is used as a criteria to guarantee message ordering and to achieve fine-distributed message partitioning. Users need to implement this interface in order to select arbitrary key from the request context or from the content included in a request.

Method Summary

Modifier and Type	Method and Description
byte[]	selectKey(com.linecorp.armeria.common.logging.RequestLog log, E structuredLog) Selects a key which should be associated toe the record given as structuredLog.

Method Detail

selectKey

@Nullable
byte[] selectKey(com.linecorp.armeria.common.logging.RequestLog log,
                           E structuredLog)

Selects a key which should be associated toe the record given as structuredLog.

Returns:

A byte-array represented key or null