All Downloads are FREE. Search and download functionalities are using the official Maven repository.

com.github.tomakehurst.wiremock.extension.responsetemplating.helpers.PickRandomHelper Maven / Gradle / Ivy

There is a newer version: 3.0.1
Show newest version
/*
 * Copyright (C) 2020-2021 Thomas Akehurst
 *
 * 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 com.github.tomakehurst.wiremock.extension.responsetemplating.helpers;

import com.github.jknack.handlebars.Options;
import com.google.common.collect.ImmutableList;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.ThreadLocalRandom;

public class PickRandomHelper extends HandlebarsHelper {

  @SuppressWarnings("unchecked")
  @Override
  public Object apply(Object context, Options options) throws IOException {
    if (context == null) {
      return this.handleError(
          "Must specify either a single list argument or a set of single value arguments.");
    }

    List valueList =
        (Iterable.class.isAssignableFrom(context.getClass()))
            ? ImmutableList.copyOf((Iterable) context)
            : ImmutableList.builder().add(context).add(options.params).build();

    int index = ThreadLocalRandom.current().nextInt(valueList.size());
    return valueList.get(index).toString();
  }
}