Massive Argeo APIs refactoring

[lgpl/argeo-commons.git] / org.argeo.util / src / org / argeo / util / naming / SrvRecord.java

diff --git a/org.argeo.util/src/org/argeo/util/naming/SrvRecord.java b/org.argeo.util/src/org/argeo/util/naming/SrvRecord.java
new file mode 100644 (file)
index 0000000..f2476a9
--- /dev/null
+++ b/org.argeo.util/src/org/argeo/util/naming/SrvRecord.java
@@ -0,0 +1,52 @@
+package org.argeo.util.naming;
+
+class SrvRecord implements Comparable<SrvRecord> {
+       private final Integer priority;
+       private final Integer weight;
+       private final Integer port;
+       private final String hostname;
+
+       public SrvRecord(Integer priority, Integer weight, Integer port, String hostname) {
+               this.priority = priority;
+               this.weight = weight;
+               this.port = port;
+               this.hostname = hostname;
+       }
+
+       @Override
+       public int compareTo(SrvRecord other) {
+               // https: // en.wikipedia.org/wiki/SRV_record
+               if (priority != other.priority)
+                       return priority - other.priority;
+               if (weight != other.weight)
+                       return other.weight - other.weight;
+               String host = toHost(false);
+               String otherHost = other.toHost(false);
+               if (host.length() == otherHost.length())
+                       return host.compareTo(otherHost);
+               else
+                       return host.length() - otherHost.length();
+       }
+
+       @Override
+       public boolean equals(Object obj) {
+               if (obj instanceof SrvRecord) {
+                       SrvRecord other = (SrvRecord) obj;
+                       return priority == other.priority && weight == other.weight && port == other.port
+                                       && hostname.equals(other.hostname);
+               }
+               return false;
+       }
+
+       @Override
+       public String toString() {
+               return priority + " " + weight;
+       }
+
+       public String toHost(boolean withPort) {
+               String hostStr = hostname;
+               if (hostname.charAt(hostname.length() - 1) == '.')
+                       hostStr = hostname.substring(0, hostname.length() - 1);
+               return hostStr + (withPort ? ":" + port : "");
+       }
+}