log request body using scala http filter

Question

i am using this filter to save log about request and response time:

import play.api.Logger
import play.api.mvc._
import scala.concurrent.Future
import play.api.libs.concurrent.Execution.Implicits.defaultContext

object LoggingFilter extends Filter {
  def apply(nextFilter: (RequestHeader) => Future[SimpleResult])
           (requestHeader: RequestHeader): Future[SimpleResult] = {
    val startTime = System.currentTimeMillis
    nextFilter(requestHeader).map { result =>
      val endTime = System.currentTimeMillis
      val requestTime = endTime - startTime
      Logger.info(s"${requestHeader.method} ${requestHeader.uri} " +
        s"took ${requestTime}ms and returned ${result.header.status}")
      result.withHeaders("Request-Time" -> requestTime.toString)
    }
  }
}

however i need to save the request body in the log. i know that this can be done using Scala action composition but i cant figure out how to get this done. any help??

Answer 1

If you want to access to the request body, you need to override the method apply(EssentialAction) of an EssentialFilter object.

For reference :

• Play documentation, "More powerful filters" paragraph
• Understanding the Play Filter API, by James Roper