Package zmq.util

Class Utils

  • public class Utils
extends java.lang.Object

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static java.lang.ThreadLocal<java.security.SecureRandom> random  

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private Utils()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static byte[] bytes​(java.nio.ByteBuffer buf)  
      static void checkArgument​(boolean expression, java.lang.String errorMessage)  
      static void checkArgument​(boolean expression, Supplier<java.lang.String> errorMessage)  
      static boolean delete​(java.io.File path)  
      static java.lang.String dump​(java.nio.ByteBuffer buffer, int pos, int limit)  
      static int findOpenPort()  
      static Address getPeerIpAddress​(java.nio.channels.SocketChannel fd)  
      static byte[] randomBytes​(int length)  
      static int randomInt()  
      static int randomInt​(int bound)  
      static byte[] realloc​(byte[] src, int size)  
      static <T> T[] realloc​(java.lang.Class<T> klass, T[] src, int size, boolean ended)  
      static void unblockSocket​(java.nio.channels.SelectableChannel... channels)  
      static java.lang.String unhash​(int port)
      Finds a string whose hashcode is the number in input.
      private static java.lang.StringBuilder unhash​(java.lang.StringBuilder builder, int port, char boundary)  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • random

        private static final java.lang.ThreadLocal<java.security.SecureRandom> random

    • Constructor Detail

      • Utils

        private Utils()

    • Method Detail

      • randomInt

        public static int randomInt()

      • randomInt

        public static int randomInt​(int bound)

      • randomBytes

        public static byte[] randomBytes​(int length)

      • unhash

        public static java.lang.String unhash​(int port)
        Finds a string whose hashcode is the number in input.
        Parameters:
        port - the port to find String hashcode-equivalent of. Has to be positive or 0.
        Returns:
        a String whose hashcode is the number in input.

      • unhash

        private static java.lang.StringBuilder unhash​(java.lang.StringBuilder builder,
                                              int port,
                                              char boundary)

      • findOpenPort

        public static int findOpenPort()
                        throws java.io.IOException
        Throws:
        java.io.IOException

      • unblockSocket

        public static void unblockSocket​(java.nio.channels.SelectableChannel... channels)
                          throws java.io.IOException
        Throws:
        java.io.IOException

      • realloc

        public static <T> T[] realloc​(java.lang.Class<T> klass,
                              T[] src,
                              int size,
                              boolean ended)

      • bytes

        public static byte[] bytes​(java.nio.ByteBuffer buf)

      • realloc

        public static byte[] realloc​(byte[] src,
                             int size)

      • delete

        public static boolean delete​(java.io.File path)

      • getPeerIpAddress

        public static Address getPeerIpAddress​(java.nio.channels.SocketChannel fd)

      • dump

        public static java.lang.String dump​(java.nio.ByteBuffer buffer,
                                    int pos,
                                    int limit)

      • checkArgument

        public static void checkArgument​(boolean expression,
                                 java.lang.String errorMessage)

      • checkArgument

        public static void checkArgument​(boolean expression,
                                 Supplier<java.lang.String> errorMessage)