An example of SignatureCalculator for Gatling 2.3.1

HawkAuth.scala

package test.utils

import java.net.URI

import test.Test
import org.asynchttpclient.{Request, RequestBuilderBase, SignatureCalculator}

class HawkAuth extends SignatureCalculator {

  override def calculateAndAddSignature(request: Request, requestBuilder: RequestBuilderBase[_]): Unit = {
    val creds = Test.hawk.hawk_creds(Test.sessionToken)
    val url = request.getUrl
    val method = request.getMethod
    val authHeader = Test.hawk.generate_hawk(creds.getId, creds.getKey, new URI(url), method)
    requestBuilder.setHeader("Authorization", authHeader)
  }

}