org.argeo.util/src/org/argeo/util/naming/dns/SrvRecord.java

   1 package org.argeo.util.naming.dns;
   2
   3 class SrvRecord implements Comparable<SrvRecord> {
   4         private final Integer priority;
   5         private final Integer weight;
   6         private final Integer port;
   7         private final String hostname;
   8
   9         public SrvRecord(Integer priority, Integer weight, Integer port, String hostname) {
  10                 this.priority = priority;
  11                 this.weight = weight;
  12                 this.port = port;
  13                 this.hostname = hostname;
  14         }
  15
  16         @Override
  17         public int compareTo(SrvRecord other) {
  18                 // https: // en.wikipedia.org/wiki/SRV_record
  19                 if (priority != other.priority)
  20                         return priority - other.priority;
  21                 if (weight != other.weight)
  22                         return other.weight - other.weight;
  23                 String host = toHost(false);
  24                 String otherHost = other.toHost(false);
  25                 if (host.length() == otherHost.length())
  26                         return host.compareTo(otherHost);
  27                 else
  28                         return host.length() - otherHost.length();
  29         }
  30
  31         @Override
  32         public boolean equals(Object obj) {
  33                 if (obj instanceof SrvRecord) {
  34                         SrvRecord other = (SrvRecord) obj;
  35                         return priority == other.priority && weight == other.weight && port == other.port
  36                                         && hostname.equals(other.hostname);
  37                 }
  38                 return false;
  39         }
  40
  41         @Override
  42         public String toString() {
  43                 return priority + " " + weight;
  44         }
  45
  46         public String toHost(boolean withPort) {
  47                 String hostStr = hostname;
  48                 if (hostname.charAt(hostname.length() - 1) == '.')
  49                         hostStr = hostname.substring(0, hostname.length() - 1);
  50                 return hostStr + (withPort ? ":" + port : "");
  51         }
  52 }