Server after chain support, and minor metrics

lib/messages/search_response.js

@@ -24,6 +24,7 @@ function SearchResponse(options) {
 
   this.attributes = options.attributes ? options.attributes.slice() : [];
   this.notAttributes = [];
+  this.sentEntries = 0;
 }
 util.inherits(SearchResponse, LDAPResult);
 module.exports = SearchResponse;
@@ -76,6 +77,7 @@ SearchResponse.prototype.send = function(entry) {
       this.log.debug('%s: sending:  %j', this.connection.ldap.id, entry.json);
 
     this.connection.write(entry.toBer());
+    this.sentEntries++;
   } catch (e) {
     this.log.warn('%s failure to write message %j: %s',
                   this.connection.ldap.id, this.json, e.toString());

lib/server.js

@@ -300,6 +300,7 @@ function Server(options) {
     c.parser.on('message', function(req) {
       req.connection = c;
       req.logId = c.ldap.id + '::' + req.messageID;
+      req.startTime = new Date().getTime();
 
       if (log.isDebugEnabled())
         log.debug('%s: message received: req=%j', c.ldap.id, req.json);
@@ -325,18 +326,32 @@ function Server(options) {
       res.requestDN = req.dn;
 
       var chain = self._getHandlerChain(req);
+      //.concat(this._postChain || []);
 
       var i = 0;
       return function(err) {
         function sendError(err) {
           res.status = err.code || errors.LDAP_OPERATIONS_ERROR;
-          res.matchedDN = req.suffix.toString();
+          res.matchedDN = req.suffix ? req.suffix.toString() : '';
           res.errorMessage = err.message || '';
           return res.end();
         }
 
-        if (err)
-          return sendError(err);
+        function after() {
+          if (!self._postChain || !self._postChain.length)
+            return;
+
+          function next() {} // stub out next for the post chain
+
+          self._postChain.forEach(function(c) {
+            c.call(self, req, res, next);
+          });
+        }
+
+        if (err) {
+          sendError(err);
+          return after();
+        }
 
         try {
           var next = arguments.callee;
@@ -346,6 +361,7 @@ function Server(options) {
           if (req.protocolOp === Protocol.LDAP_REQ_BIND && res.status === 0)
             c.ldap.bindDN = req.dn;
 
+          return after();
         } catch (e) {
           if (!e.stack)
             e.stack = e.toString();
@@ -611,6 +627,16 @@ Server.prototype.unbind = function() {
 };
 
 
+Server.prototype.after = function() {
+  if (!this._postChain)
+    this._postChain = [];
+
+  var self = this;
+  mergeFunctionArgs(arguments).forEach(function(h) {
+    self._postChain.push(h);
+  });
+};
+
 // All these just reexpose the requisite net.Server APIs
 Server.prototype.listen = function(port, host, callback) {
   if (!port)