RestHandler decorator

src/framework/decorators/restHandler.ts

@@ -0,0 +1,29 @@
+import { AHRestHandler } from "../features/handler/rest-handler";
+import { Anthill } from "../features/anthill";
+import { AHException } from "../features/anthill-exception";
+import { AHRestHandlerParams } from "../models/handler/rest-handler-params";
+
+
+export function RestHandler(restHandlerOptions: Partial<AHRestHandlerParams>): MethodDecorator {
+  if (!restHandlerOptions.method) {
+    throw new AHException("@RestHandler Missing rest handler method");
+  }
+
+  return function (target: Object, propertyKey: string | symbol, descriptor: PropertyDescriptor): PropertyDescriptor {
+    if (!restHandlerOptions.name) {
+      restHandlerOptions.name = String(propertyKey);
+    }
+
+    const _restHandlerOptions: AHRestHandlerParams = {
+      name: restHandlerOptions.name,
+      method: restHandlerOptions.method,
+      callable: descriptor.value,
+      ...restHandlerOptions,
+    };
+
+    const restHandler = new AHRestHandler(_restHandlerOptions);
+    Anthill.getInstance().registerRestHandler(restHandler);
+
+    return descriptor;
+  };
+}

src/framework/features/anthill.ts

@@ -1,9 +1,9 @@
 import { AHAwsEvent } from "../models/aws/event/aws-event";
-import { AHAbstractHandler } from "../../core/abstract-handler";
 import { AHAwsContext } from "../models/aws/aws-context";
 import { AHException } from "./anthill-exception";
 import { AHLambdaHandler } from "./handler/lambda-handler";
 import { AHRestHandler } from "./handler/rest-handler";
+import { AHCallable } from "../..";
 
 export class Anthill {
   private static instance: Anthill;
@@ -61,7 +61,7 @@ export class Anthill {
    * Expose all registred handlers
    * @returns All registred handlers mapped inside an object { [handlerName]: handler }
    */
-  exposeHandlers(): { [handlerName: string]: AHAbstractHandler<any, any> } {
+  exposeHandlers(): { [handlerName: string]: AHCallable<any, any> } {
     const exportObject = {};
 
     // Expose rest handlers

src/index.ts

@@ -46,6 +46,12 @@ export { AHJsonBodyParserMiddleware } from "./framework/features/middleware/json
 export { AHHeaderFieldMiddleware } from "./framework/features/middleware/header-field-middleware";
 export { AHQuerystringFieldMiddleware } from "./framework/features/middleware/querystring-field-middleware";
 
+/**
+ * DECORATORS
+ */
+
+export { RestHandler } from "./framework/decorators/restHandler";
+
 /**
  * HELPERS
  */

src/tests/rest-handler-decorator.test.ts

@@ -0,0 +1,38 @@
+import { AHAwsContext, AHAwsEvent, AHException, AHHttpResponse, AHPromiseHelper, AHRestMethodEnum, Anthill, RestHandler, anthill } from "..";
+import { AHTestResource } from "./resources/test-resource";
+
+describe('RestHandler decorator', () => {
+  beforeEach(() => {
+    Anthill["instance"] = null;
+  });
+
+  test('decorator add handler to anthill', () => {
+    class AHTest {
+      @RestHandler({
+        method: AHRestMethodEnum.Get,
+      })
+      async listTest(event: AHAwsEvent, context: AHAwsContext): Promise<AHHttpResponse> {
+        return AHPromiseHelper.promisify(AHHttpResponse.success(null))
+      }
+    }
+
+    new AHTest();
+    const app = anthill();
+    const handlers = app.exposeHandlers();
+
+    expect(Object.keys(handlers).includes("listTest")).toBe(true);
+    expect(handlers.listTest(AHTestResource.getBaseEvent(), AHTestResource.getBaseContext())).resolves.toBeInstanceOf(AHHttpResponse);
+  });
+
+  test('decorator missing mandatory param', () => {
+    expect(() => {
+      class AHTest {
+        @RestHandler({})
+        async listTest(event: AHAwsEvent, context: AHAwsContext): Promise<AHHttpResponse> {
+          return AHPromiseHelper.promisify(AHHttpResponse.success(null))
+        }
+      }
+      new AHTest();
+    }).toThrow(AHException);
+  });
+});

todo.todo

@@ -1,9 +1,8 @@
-- Add structural classes
-  - Handler (that auto register handlers through anthill app)
-  - 
-- System for registering handlers with more ease
-  - register controller (https://spring.io/guides/tutorials/rest/)
-  -
+- helper for extracting info from AHAwsEvent (decorator / validator / DTO in ?)
+  - query param
+  - path param
+  - body param
+  - ...
 - DTO
   - spec in (will replace middleware for qs and body check)
   - spec out

tsconfig.json

@@ -28,6 +28,7 @@
     "esModuleInterop": true,
     "noImplicitAny": false,
     "strictNullChecks": false,
+    "experimentalDecorators": true,
   },
   "include": [
     "src"