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Adds section on enabling reactor netty access logs.

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Spencer Gibb
2018-09-05 13:00:19 -04:00
parent 52ff905d8f
commit 411a9fbb77
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docs/src/main/asciidoc/spring-cloud-gateway.adoc
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@@ -1054,6 +1054,30 @@ The Gateway can be configured to create routes based on services registered with
To enable this, set `spring.cloud.gateway.discovery.locator.enabled=true` and make sure a `DiscoveryClient` implementation is on the classpath and enabled (such as Netflix Eureka, Consul or Zookeeper).
== Reactor Netty Access Logs
To enable Reactor Netty access logs, set `-Dreactor.netty.http.server.accessLogEnabled=true`. (It must be a Java System Property, not a Spring Boot property).
The logging system can be configured to have a separate access log file. Below is an example logback configuration:
.logback.xml
[source,xml]
----
<appender name="accessLog" class="ch.qos.logback.core.FileAppender">
<file>access_log.log</file>
<encoder>
<pattern>%msg%n</pattern>
</encoder>
</appender>
<appender name="async" class="ch.qos.logback.classic.AsyncAppender">
<appender-ref ref="accessLog" />
</appender>
<logger name="reactor.netty.http.server.AccessLog" level="INFO" additivity="false">
<appender-ref ref="async"/>
</logger>
----
== CORS Configuration
The gateway can be configured to control CORS behavior. The "global" CORS configuration is a map of URL patterns to https://docs.spring.io/spring/docs/5.0.x/javadoc-api/org/springframework/web/cors/CorsConfiguration.html[Spring Framework `CorsConfiguration`].