springboot2自定义HttpTraceRepository

序

本文主要研究下springboot2自定义HttpTraceRepository

Configuration

@Configuration
@ConditionalOnWebApplication
@ConditionalOnProperty(prefix = "management.trace.http", name = "enabled", matchIfMissing = true)
@EnableConfigurationProperties(HttpTraceProperties.class)
@AutoConfigureBefore(HttpTraceAutoConfiguration.class)
public class TraceConfig {

    @Bean
    @ConditionalOnMissingBean(HttpTraceRepository.class)
    public RemoteHttpTraceRepository traceRepository() {
        return new RemoteHttpTraceRepository();
    }
}

这里新增了一个配置，在HttpTraceAutoConfiguration之前，自定义了traceRepository

RemoteHttpTraceRepository

public class RemoteHttpTraceRepository implements HttpTraceRepository {

    private static final Logger LOGGER = LoggerFactory.getLogger(RemoteHttpTraceRepository.class);

    @Override
    public List findAll() {
        return Collections.emptyList();
    }

    @Override
    public void add(HttpTrace trace) {
        //send log to remote server or log center
        LOGGER.info(JSON.toJSONString(trace));
    }
}

自定义RemoteHttpTraceRepository，可以自己在add方法将trace输出到日志服务器

小结

通过自定义HttpTraceRepository，对于webflux的工程来说可以自己实现类似tomcat的accesslog，非常方便。

doc

• Spring Boot Reference Guide