Updated the method for creating the defer object in the transport, it is now a property of the Transport class itself. Fixed the error.message logging in the Transport. Added sniffOn... related stuff

src/lib/transport.js

@@ -10,16 +10,12 @@ var Host = require('./host');
 var when = require('when');
 
 function Transport(config) {
+  var self = this;
   config = config || {};
 
   var LogClass = (typeof config.log === 'function') ? config.log : require('./log');
   config.log = this.log = new LogClass(config);
 
-  // overwrite the createDefer method if a new implementation is provided
-  if (typeof config.createDefer === 'function') {
-    this.createDefer = config.createDefer;
-  }
-
   // setup the connection pool
   var ConnectionPool = _.funcEnum(config, 'connectionPool', Transport.connectionPools, 'main');
   this.connectionPool = new ConnectionPool(config);
@@ -65,6 +61,19 @@ function Transport(config) {
 
     this.connectionPool.setHosts(hosts);
   }
+
+  if (config.sniffOnStart) {
+    this.sniff();
+  }
+
+  if (config.sniffInterval) {
+    this._sniffTimeout = setTimeout(function doSniff() {
+      self.sniff();
+      self._sniffTimeout = setTimeout(doSniff, config.sniffInterval);
+    }, config.sniffInterval);
+  }
+
+  this.sniffAfterConnectionFault = config.sniffAfterConnectionFault;
 }
 
 Transport.connectionPools = {
@@ -79,6 +88,10 @@ Transport.nodesToHostCallbacks = {
   main: require('./nodes_to_host')
 };
 
+Transport.createDefer = function () {
+  return when.defer();
+};
+
 /**
  * Perform a request with the client's transport
  *
@@ -150,10 +163,10 @@ Transport.prototype.request = function (params, cb) {
       connection.setStatus('dead');
       if (remainingRetries) {
         remainingRetries--;
-        self.log.error('Request error, retrying --', err.message);
+        self.log.error('Request error, retrying' + (err.message ? ' -- ' + err.message : ''));
         self.connectionPool.select(sendReqWithConnection);
       } else {
-        self.log.error('Request complete with error --', err.message);
+        self.log.error('Request complete with error' + (err.message ? ' -- ' + err.message : ''));
         respond(new errors.ConnectionFault(err));
       }
     } else {
@@ -169,12 +182,14 @@ Transport.prototype.request = function (params, cb) {
 
     clearTimeout(requestTimeoutId);
     var parsedBody;
+    var isJson = !headers || (headers['content-type'] && ~headers['content-type'].indexOf('application/json'));
 
     if (!err && body) {
-      if (!headers || headers['content-type'] === 'application/json') {
+      if (isJson) {
         parsedBody = self.serializer.deserialize(body);
         if (parsedBody == null) {
           err = new errors.Serialization();
+          parsedBody = body;
         }
       } else {
         parsedBody = body;
@@ -194,7 +209,7 @@ Transport.prototype.request = function (params, cb) {
       }
     }
 
-    // how do we parse the body?
+    // can we cast notfound to false?
     if (params.castExists) {
       if (err && err instanceof errors.NotFound) {
         parsedBody = false;
@@ -207,11 +222,13 @@ Transport.prototype.request = function (params, cb) {
     // how do we send the response?
     if (typeof cb === 'function') {
       if (err) {
-        cb(err);
+        cb(err, parsedBody, status);
       } else {
         cb(void 0, parsedBody, status);
       }
     } else if (err) {
+      err.body = parsedBody;
+      err.status = status;
       defer.reject(err);
     } else {
       defer.resolve({
@@ -250,7 +267,7 @@ Transport.prototype.request = function (params, cb) {
       abort: abortRequest
     };
   } else {
-    defer = this.createDefer();
+    defer = Transport.createDefer();
     request = defer.promise;
     request.abort = abortRequest;
   }
@@ -260,9 +277,7 @@ Transport.prototype.request = function (params, cb) {
   return request;
 };
 
-Transport.prototype.createDefer = function () {
+
-  return when.defer();
-};
 
 /**
  * Ask an ES node for a list of all the nodes, add/remove nodes from the connection