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/*
 * Copyright 2011-2024 GatlingCorp (https://gatling.io)
 *
 * 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.graphite

import scala.collection.mutable

private[graphite] object GraphitePath {
  private val sanitizeStringMemo = mutable.Map.empty[String, String]
  def sanitizeString(s: String): String = sanitizeStringMemo.getOrElseUpdate(s, s.replace(' ', '_').replace('.', '-').replace('\\', '-'))

  def graphitePath(root: String) = new GraphitePath(root :: Nil)
  def graphitePath(path: List[String]) = new GraphitePath(path.map(sanitizeString))
}

private[graphite] final case class GraphitePath private (path: List[String]) {
  import GraphitePath.sanitizeString
  def /(subPath: String) = new GraphitePath(sanitizeString(subPath) :: path)
  def /(subPath: GraphitePath) = new GraphitePath(subPath.path.map(sanitizeString) ::: path)
  def pathKey: String = path.reverse.mkString(".")
}