Logs all Request / Response Cycles. Log message contains HTTP-Method, Request Headers, Response Status and Response body.

LoggingFilter Playframework 2.1

import play.api.GlobalSettings
import play.api.Play.current
import play.api.mvc._


object Global extends WithFilters(LoggingFilter) {}

object LoggingFilter extends Filter {
  import play.api.Logger
  import play.api.libs.concurrent.Execution.Implicits._
  import play.api.libs.iteratee.Iteratee

  def apply(next: (RequestHeader) => Result)(rh: RequestHeader) = {
    def logStatus(result: PlainResult): Result = {
      result match {
        case s: SimpleResult[_] => {
          val bodyFuture = s.body run Iteratee.getChunks
          bodyFuture map (bodyChunks => writeLog(rh, result, bodyChunks.mkString))
        }
        case _ => Logger.warn("LogginFilter missed response. Unhandled response type!")
      }
      result
    }

    def writeLog(rh: RequestHeader, result: PlainResult, resultBody: String) = {
      val message = rh.method + " " + rh.path + rh.rawQueryString +
        " returned with Status: " + result.header.status +
        " Response Body: " + resultBody +
        " Request-Headers: " + rh.headers.toSimpleMap.mkString

      if (result.header.status >= 399) Logger.warn(message)
      else Logger.debug(message)
    }

    next(rh) match {
      case plain: PlainResult => logStatus(plain)
      case async: AsyncResult => async.transform(logStatus)
    }
  }
}