Replaced Manager.getFromInjector() by Manager.getInjector() and Manager.createInjector()

Author: luizmineo

CHANGELOG.md

@@ -1,6 +1,6 @@
 ## v0.5.13
 * Improved plugin API: 
-    * Added the `Manager.getFromInjector()` method, which allows plugins to retrieve objects from di modules more easily.
+    * Added the `Manager.getInjector()` and `Manager.createInjector()` methods, which allow plugins to retrieve objects from di modules more easily.
     * Added the `Manager.findFunctions()`, `Manager.findClasses()` and `Manager.findMethods()` methods, which allow plugins to scan imported libraries.
     * Added the `Manager.getShelfHandler()` and `Manager.setShelfHandler()` methods, which allow plugins to access and replace the current installed shelf handler.
 

lib/server.dart

@@ -560,9 +560,16 @@ abstract class Manager {
 
   ///Set or replace the current installed shelf handler
   void setShelfHandler(shelf.Handler handler);
-  
-  ///Retrieve an object from the DI Injector
-  Object getFromInjector(Type type, [Type annotation]);
+
+  /**
+   * Create a new DI injector restricted to the scope of this plugin.
+   *
+   * The returned injector will be a child of the application injector.
+   */
+  Injector createInjector(List<Module> modules);
+
+  ///Retrieve the application DI injector
+  Injector getInjector();
 
   ///Find all functions annotated with [annotation]
   Iterable<AnnotatedType<MethodMirror>> findFunctions(Type annotation);

lib/src/plugin_impl.dart

@@ -151,8 +151,12 @@ class _ManagerImpl implements Manager {
   }
 
   @override
-  Object getFromInjector(Type type, [Type annotation]) =>
-    _injector.get(type, annotation);
+  Injector createInjector(List<Module> modules) {
+    return new ModuleInjector(modules, _injector);
+  }
+
+  @override
+  Object getInjector() => _injector;
 
   @override
   Iterable<AnnotatedType<MethodMirror>> findFunctions(Type annotation) {

lib/src/setup_impl.dart

@@ -384,8 +384,7 @@ void _scanHandlers([List<Symbol> libraries]) {
     }
 
     _configureGroup(manager.serverMetadata, g.metadata,
-          g.clazz, _injector,
-          levelHist, urlPrefix: g.lib.conf.urlPrefix);
+          g.clazz, levelHist, urlPrefix: g.lib.conf.urlPrefix);
   });
 
 
@@ -459,15 +458,15 @@ void _clearHandlers() {
 }
 
 void _configureGroup(_ServerMetadataImpl serverMetadata,
-                     Group group, ClassMirror clazz, Injector injector,
+                     Group group, ClassMirror clazz,
                      List<int> chainIdxByLevel, {String urlPrefix}) {
 
   var className = MirrorSystem.getName(clazz.qualifiedName);
   _logger.info("Found group: $className");
 
   InstanceMirror instance = null;
   try {
-    instance = reflect(injector.get(clazz.reflectedType));
+    instance = reflect(_injector.get(clazz.reflectedType));
   } catch(e) {
     _logger.severe("Failed to get $className", e);
     throw new SetupException(className, "Failed to create a instance of the group $className");