Spring-cloud-gateway: Logging Filter support

[hoswey]

support of the access log like nginx/tomcat

[spencergibb]

Can you be more specific? Logging is a facility of spring boot. Have you looked at https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-logging?

[hoswey]

Like the nginx access log http://nginx.org/en/docs/http/ngx_http_log_module.html.
We can specify the log format like below, then it will be log down. The log is useful for the request analysis.

 ''$remote_addr - $remote_user [$time_local] '
 '"$request" $status $bytes_sent '
  '"$http_referer" "$http_user_agent" "$gzip_ratio"';'

[spencergibb]

Spring Boot already does this https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#howto-configure-accesslogs

[hoswey]

@spencergibb As I understand, this config is specific for tomcat while gateway build on Netty.

[spencergibb]

You may be right, but the feature request should still go upstream. Access logs in reactor Netty are not specific to the gateway

[spencergibb]

See https://github.com/reactor/reactor-netty/issues/301

[tillmannheigel]

Hi @spencergibb , are there any news regarding the access logs?

[bruno-roussel]

+1

[merusso]

Now that reactor-netty added support in 0.7.9.RELEASE, this is available for use in spring-cloud-gateway.

The property to enable this is -Dreactor.netty.http.server.accessLogEnabled=true, as described in the documentation here: https://cloud.spring.io/spring-cloud-gateway/single/spring-cloud-gateway.html#_reactor_netty_access_logs