Thread.dumpStack() circumvents whatever logging is configured and writes

directly to stderr. Logging an exception with the associated warning does the
right thing and logs the stack trace via the logging system.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5318 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/server/net/ConnectionManager.java

@@ -847,16 +847,14 @@ public class ConnectionManager extends LoopingThread
     {
         // sanity check
         if (conn == null || msg == null) {
-            log.warning("postMessage() bogosity [conn=" + conn + ", msg=" + msg + "].");
-            Thread.dumpStack();
+            log.warning("postMessage() bogosity", "conn", conn, "msg", msg, new Exception());
             return;
         }
 
         // more sanity check; messages must only be posted from the dobjmgr thread
         if (!_omgr.isDispatchThread()) {
-            log.warning("Message posted on non-distributed object thread [conn=" + conn +
-                        ", msg=" + msg + ", thread=" + Thread.currentThread() + "].");
-            Thread.dumpStack();
+            log.warning("Message posted on non-distributed object thread", "conn", conn,
+                        "msg", msg, "thread", Thread.currentThread(), new Exception());
             // let it through though as we don't want to break things unnecessarily
         }