scala - 在 http4s 中记录 InternalServerError 请求的 url

Question

如果发生未处理的错误，http4s 返回 InternalServerError。发生 InternalServerError 时是否可以记录请求的 url？如果是，最好的方法是什么？

Answer 1

它不是开箱即用吗？

这是来自快速入门指南https://http4s.org/v0.21/的 g8 模板项目的日志， 其中添加了引发运行时异常的路由：

[ioapp-compute-1] INFO  o.h.s.m.Logger - HTTP/1.1 GET /bad_joke Headers(Accept: */*, Cache-Control: no-cache, Host: localhost:8089, Connection: Keep-Alive, User-Agent: Apache-HttpClient/4.5.12 (Java/11.0.8), Accept-Encoding: gzip,deflate) body="" 
[ioapp-compute-1] INFO  o.h.s.m.Logger - service raised an error: class java.lang.RuntimeException 
[ioapp-compute-1] ERROR o.h.s.service-errors - Error servicing request: GET /bad_joke from 127.0.0.1 
java.lang.RuntimeException: haha
        at pack.H4sRoutes$$anonfun$jokeRoutes$1.applyOrElse(H4sRoutes.scala:19)
        at pack.H4sRoutes$$anonfun$jokeRoutes$1.applyOrElse(H4sRoutes.scala:13)
        at $anonfun$combineK$1 @ org.http4s.syntax.KleisliResponseOps.$anonfun$orNotFound$1(KleisliSyntax.scala:38)
        at getOrElse @ org.http4s.syntax.KleisliResponseOps.$anonfun$orNotFound$1(KleisliSyntax.scala:38)
        at guaranteeCase$extension @ org.http4s.server.middleware.RequestLogger$.$anonfun$impl$9(RequestLogger.scala:97)
        at map @ org.http4s.server.middleware.RequestLogger$.$anonfun$impl$9(RequestLogger.scala:101)
        at flatMap @ org.http4s.server.middleware.RequestLogger$.$anonfun$impl$7(RequestLogger.scala:82)
        at flatMap @ org.http4s.server.middleware.ResponseLogger$.$anonfun$impl$7(ResponseLogger.scala:65)
        at guaranteeCase$extension @ org.http4s.server.middleware.ResponseLogger$.$anonfun$impl$7(ResponseLogger.scala:88)
        at main$ @ pack.Main$.main(Main.scala:5)