io.gatling.http.request.ELFileBodies.scala Maven / Gradle / Ivy

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/**
 * Copyright 2011-2014 eBusiness Information, Groupe Excilys (www.ebusinessinformation.fr)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 		http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.gatling.http.request

import io.gatling.core.util.CacheHelper

import io.gatling.core.config.GatlingConfiguration.configuration
import io.gatling.core.config.Resource
import io.gatling.core.session.Expression
import io.gatling.core.session.el.EL
import io.gatling.core.util.IO._
import io.gatling.core.validation.Validation

object ELFileBodies {

  lazy val Cache = CacheHelper.newCache[String, Validation[Expression[String]]](configuration.http.elFileBodiesCacheMaxCapacity)

  def cached(path: String) =
    if (configuration.http.elFileBodiesCacheMaxCapacity > 0)
      Cache.getOrElseUpdate(path, compileFile(path))
    else
      compileFile(path)

  def compileFile(path: String): Validation[Expression[String]] =
    Resource.requestBody(path)
      .map(resource => withCloseable(resource.inputStream) {
        _.toString(configuration.core.charset)
      }).map(_.el[String])

  def asString(filePath: Expression[String]): Expression[String] = session =>
    for {
      path <- filePath(session)
      expression <- cached(path)
      body <- expression(session)
    } yield body
}