gatling Custom validations

[Sreelakshmi Ck]

Hi,

I am new to gatling and scala. 

I want to fail a request, if the json response didn't match the json schema.

This is my schema validator function. 

 def validateJsonAgainstSchema(jsonResponseExpr:Expression[String], schemaFile:String)(session: Session): Validation[Session] = {

    val jsonResponse=jsonResponseExpr(session)

    val jsonSchema = testUtilsObj.readFile(schemaFile)

    val schema: JsonNode = asJsonNode(parse(jsonSchema))

    val instance: JsonNode = asJsonNode(parse(jsonResponse.get))

    val validator = JsonSchemaFactory.byDefault().getValidator

    val processingReport = validator.validate(schema, instance)

    if (processingReport.isSuccess) {

           Success(session)

         } else {

        println("****validation Failed*******")

        println(processingReport.map(_.asJson()).mkString("\n"))

       Failure(processingReport.map(_.asJson()).mkString("\n"))

    }

  }

  I call this function in exec block as below, and the gatling test passes even if the function returns failure.

   .exec(

        valObj.validateJsonAgainstSchema("${jsonResponse}","Schemas/searchQueryResponse.json") _

      )

  How to make the call to 'validateJsonAgainstSchema' in the request check block. Can some one give me example of implementing custom validations?

  Thanks,

  Sreelakshmi