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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.activemq.artemis.utils;

import java.util.Random;

import org.apache.activemq.artemis.api.core.ActiveMQBuffer;
import org.apache.activemq.artemis.api.core.ActiveMQBuffers;
import org.apache.activemq.artemis.api.core.SimpleString;

public class RandomUtil {


   protected static final Random random = new Random();

   public static Random getRandom() {
      return random;
   }


   public static String randomString() {
      return java.util.UUID.randomUUID().toString();
   }

   public static SimpleString randomSimpleString() {
      return SimpleString.of(RandomUtil.randomString());
   }

   public static char randomChar() {
      return RandomUtil.randomString().charAt(0);
   }

   public static long randomLong() {
      return RandomUtil.random.nextLong();
   }

   public static long randomPositiveLong() {
      return Math.abs(RandomUtil.randomLong());
   }

   public static int randomInt() {
      return RandomUtil.random.nextInt();
   }

   public static int randomPositiveInt() {
      return Math.abs(RandomUtil.randomInt());
   }

   public static Integer randomPositiveIntOrNull() {
      Integer random = RandomUtil.randomInt();
      return random % 5 == 0 ? null : Math.abs(random);
   }

   public static ActiveMQBuffer randomBuffer(final int size, final long... data) {
      ActiveMQBuffer buffer = ActiveMQBuffers.fixedBuffer(size + 8 * data.length);

      for (long d : data) {
         buffer.writeLong(d);
      }

      for (int i = 0; i < size; i++) {
         buffer.writeByte(randomByte());
      }

      return buffer;
   }

   public static int randomInterval(final int min, final int max) {
      if (min == max) return max;
      return min + random.nextInt(max - min);
   }

   public static int randomMax(final int max) {
      assert max > 0;

      int value = randomPositiveInt() % max;

      if (value == 0) {
         value = max;
      }

      return value;
   }

   public static int randomPort() {
      return RandomUtil.random.nextInt(65536);
   }

   public static short randomShort() {
      return (short) RandomUtil.random.nextInt(Short.MAX_VALUE);
   }

   public static byte randomByte() {
      return Integer.valueOf(RandomUtil.random.nextInt()).byteValue();
   }

   public static boolean randomBoolean() {
      return RandomUtil.random.nextBoolean();
   }

   public static byte[] randomBytes() {
      return RandomUtil.randomString().getBytes();
   }

   public static byte[] randomBytes(final int length) {
      byte[] bytes = new byte[length];
      for (int i = 0; i < bytes.length; i++) {
         bytes[i] = RandomUtil.randomByte();
      }
      return bytes;
   }

   public static double randomDouble() {
      return RandomUtil.random.nextDouble();
   }

   public static float randomFloat() {
      return RandomUtil.random.nextFloat();
   }

}