Implements #633 and #576 (#719)

* Implements 633 and 576

* Preparing release

package.json

@@ -1,6 +1,6 @@
 {
   "name": "inversify",
-  "version": "4.7.0",
+  "version": "4.8.0",
   "description": "A powerful and lightweight inversion of control container for JavaScript and Node.js apps powered by TypeScript.",
   "main": "lib/inversify.js",
   "jsnext:main": "es/inversify.js",

src/interfaces/interfaces.ts

@@ -88,7 +88,9 @@ namespace interfaces {
         guid: string;
         container: Container;
         plan: Plan;
+        currentRequest: Request;
         addPlan(plan: Plan): void;
+        setCurrentRequest(request: Request): void;
     }
 
     export interface ReflectResult {

src/planning/context.ts

@@ -6,15 +6,22 @@ class Context implements interfaces.Context {
     public guid: string;
     public container: interfaces.Container;
     public plan: interfaces.Plan;
+    public currentRequest: interfaces.Request;
 
-    public constructor(container: interfaces.Container) {
+    public constructor(
+        container: interfaces.Container) {
         this.guid = guid();
         this.container = container;
     }
 
     public addPlan(plan: interfaces.Plan) {
         this.plan = plan;
     }
+
+    public setCurrentRequest(currentRequest: interfaces.Request) {
+        this.currentRequest = currentRequest;
+    }
+
 }
 
 export { Context };

src/resolution/resolver.ts

@@ -28,6 +28,8 @@ const invokeFactory = (
 const _resolveRequest = (requestScope: interfaces.RequestScope) =>
     (request: interfaces.Request): any => {
 
+    request.parentContext.setCurrentRequest(request);
+
     const bindings = request.bindings;
     const childRequests = request.childRequests;
 

test/bugs/issue_633.test.ts

@@ -0,0 +1,36 @@
+import { expect } from "chai";
+import { Container, injectable } from "../../src/inversify";
+
+describe("Issue 633", () => {
+
+    it("Should expose metadata through context", () => {
+
+        @injectable()
+        class Logger {
+            public named: string;
+            public constructor(named: string) {
+                this.named = named;
+            }
+        }
+
+        const container = new Container();
+
+        const TYPE = {
+            Logger: Symbol.for("Logger")
+        };
+
+        container.bind<Logger>(TYPE.Logger).toDynamicValue((context) => {
+            const namedMetadata = context.currentRequest.target.getNamedTag();
+            const named = namedMetadata ? namedMetadata.value : "default";
+            return new Logger(named);
+        });
+
+        const logger1 = container.getNamed<Logger>(TYPE.Logger, "Name1");
+        const logger2 = container.getNamed<Logger>(TYPE.Logger, "Name2");
+
+        expect(logger1.named).to.eq("Name1");
+        expect(logger2.named).to.eq("Name2");
+
+    });
+
+});