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• twitter-server_2.11
• 1.20.0
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• NotFoundView.scala

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com.twitter.server.view.NotFoundView.scala Maven / Gradle / Ivy

package com.twitter.server.view

import com.twitter.finagle.http.{Request, Response, Status}
import com.twitter.finagle.{Service, SimpleFilter}
import com.twitter.io.Buf
import com.twitter.server.util.HttpUtils.{expectsHtml, newResponse}
import com.twitter.util.Future

object NotFoundView {
  private val NotFoundHtml: String =
    s"""
          
            
            
          
          
          
            
404 The page you requested could not be found.
            

            

              
              Some endpoints are only available when the correct dependencies are added
              to your class path.
              

              For more information, please see
              
                the twitter-server docs
               or return to /admin.
              
            
          
        """
}

class NotFoundView extends SimpleFilter[Request, Response] {
  import NotFoundView._

  def apply(req: Request, svc: Service[Request, Response]) =
    if (!expectsHtml(req)) svc(req)
    else svc(req) flatMap { res =>
      if (res.status != Status.NotFound) Future.value(res) else {
        newResponse(
          contentType = "text/html;charset=UTF-8",
          status = Status.NotFound,
          content = Buf.Utf8(NotFoundHtml)
        )
      }
    }
}