JAVA-336: pool/mongo description

Author: scotthernandez

src/main/com/mongodb/DBPortPool.java

@@ -101,7 +101,10 @@ void close(){
         }
 
         private ObjectName createObjectName( ServerAddress addr ) throws MalformedObjectNameException {
-            return new ObjectName( "com.mongodb:type=ConnectionPool,host=" + addr.toString().replace( ":" , ",port=" ) + ",instance=" + hashCode() );
+            String name =  "com.mongodb:type=ConnectionPool,host=" + addr.toString().replace( ":" , ",port=" ) + ",instance=" + hashCode();
+            if ( _options.description != null )
+                name += ",description=" + _options.description;
+            return new ObjectName( name );
         }
 
         final MongoOptions _options;

src/main/com/mongodb/MongoOptions.java

@@ -18,7 +18,6 @@
 
 package com.mongodb;
 
-import java.net.*;
 
 /**
  * Various settings for the driver
@@ -59,6 +58,11 @@ else if (safe)
             return WriteConcern.NORMAL;
     }
 
+    /**
+     * <p>The description for <code>Mongo</code> instances created with these options. This is used in various places like logging.</p>
+     */
+    public String description;
+
     /**
      * <p>The number of connections allowed per host
      * (the pool size, per host)</p>
@@ -159,6 +163,7 @@ else if (safe)
 
     public String toString(){
         StringBuilder buf = new StringBuilder();
+        buf.append( "description=" ).append( description ).append( ", " );
         buf.append( "connectionsPerHost=" ).append( connectionsPerHost ).append( ", " );
         buf.append( "threadsAllowedToBlockForConnectionMultiplier=" ).append( threadsAllowedToBlockForConnectionMultiplier ).append( ", " );
         buf.append( "maxWaitTime=" ).append( maxWaitTime ).append( ", " );