Clean up the context setup

Author: Raymond Feng

example/client-server/models.js

@@ -19,7 +19,7 @@ CartItem.sum = function(cartId, callback) {
       }, 0);
 
     var ns = loopback.getCurrentContext();
-    console.log(ns.get('req').url);
+    console.log(ns.get('http').req.url);
     callback(null, total);
   });
 }

lib/middleware/context.js

@@ -21,34 +21,18 @@ function context(options) {
     return ns;
   };
 
-  if (typeof juggler.getCurrentContext === 'function') {
-    var jugglerContext = new ChainedContext(juggler.getCurrentContext(), ns);
-    juggler.getCurrentContext = function () {
-      return jugglerContext;
-    };
-  } else {
-    juggler.getCurrentContext = loopback.getCurrentContext;
-  }
-
-  if (typeof remoting.getCurrentContext === 'function') {
-    var remotingContext = new ChainedContext(remoting.getCurrentContext(), ns);
-    remoting.getCurrentContext = function () {
-      return remotingContext;
-    };
-  } else {
-    remoting.getCurrentContext = loopback.getCurrentContext;
-  }
+  chain(juggler);
+  chain(remoting);
 
   // Return the middleware
-  return function (req, res, next) {
+  return function(req, res, next) {
     // Bind req/res event emitters to the given namespace
     ns.bindEmitter(req);
     ns.bindEmitter(res);
     // Create namespace for the request context
-    ns.run(function (context) {
+    ns.run(function(context) {
       // Run the code in the context of the namespace
-      ns.set('req', req);
-      ns.set('res', res);
+      ns.set('http', {req: req, res: res}); // Set up the transport context
       next();
     });
   };
@@ -93,4 +77,16 @@ ChainedContext.prototype.reset = function (name, val) {
   } else {
     return this.parent && this.parent.reset(name, val);
   }
-};
+};
+
+function chain(child) {
+  if (typeof child.getCurrentContext === 'function') {
+    var childContext = new ChainedContext(child.getCurrentContext(),
+      loopback.getCurrentContext());
+    child.getCurrentContext = function() {
+      return childContext;
+    };
+  } else {
+    child.getCurrentContext = loopback.getCurrentContext;
+  }
+}

package.json

@@ -46,7 +46,7 @@
     "uid2": "0.0.3",
     "underscore": "~1.7.0",
     "underscore.string": "~2.3.3",
-    "continuation-local-storage": "~3.0.0"
+    "continuation-local-storage": "~3.1.1"
   },
   "peerDependencies": {
     "loopback-datasource-juggler": "^2.8.0"

test/rest.middleware.test.js

@@ -92,14 +92,16 @@ describe('loopback.rest', function() {
     var User = givenUserModelWithAuth();
     User.getToken = function(cb) {
       var context = loopback.getCurrentContext();
-      var req = context.get('req');
+      var req = context.get('http').req;
       expect(req).to.have.property('accessToken');
 
       var juggler = require('loopback-datasource-juggler');
-      expect(juggler.getCurrentContext().get('req')).to.have.property('accessToken');
+      expect(juggler.getCurrentContext().get('http').req)
+        .to.have.property('accessToken');
 
       var remoting = require('strong-remoting');
-      expect(remoting.getCurrentContext().get('req')).to.have.property('accessToken');
+      expect(remoting.getCurrentContext().get('http').req)
+        .to.have.property('accessToken');
 
       cb(null, req && req.accessToken ? req.accessToken.id : null);
     };