fix(core): apply middleware to versioned controllers (ctrl-level)

integration/versioning/e2e/uri-versioning.spec.ts

@@ -418,4 +418,67 @@ describe('URI Versioning', () => {
       await app.close();
     });
   });
+
+  // ======================================================================== //
+  describe.only('with middleware applied', () => {
+    before(async () => {
+      const moduleRef = await Test.createTestingModule({
+        imports: [AppModule],
+      }).compile();
+
+      app = moduleRef.createNestApplication();
+      app.enableVersioning({
+        type: VersioningType.URI,
+        defaultVersion: '1',
+      });
+      await app.init();
+    });
+
+    describe('GET /middleware', () => {
+      it('should return "Hello from middleware function!"', () => {
+        return request(app.getHttpServer())
+          .get('/v1/middleware')
+          .expect(200)
+          .expect('Hello from middleware function!');
+      });
+    });
+
+    describe('GET /middleware/override', () => {
+      it('should return "Hello from middleware function!"', () => {
+        return request(app.getHttpServer())
+          .get('/v2/middleware/override')
+          .expect(200)
+          .expect('Hello from middleware function!');
+      });
+    });
+
+    describe('GET /middleware/multiple', () => {
+      it('should return "Hello from middleware function!" (v1)', () => {
+        return request(app.getHttpServer())
+          .get('/v1/middleware/multiple')
+          .expect(200)
+          .expect('Hello from middleware function!');
+      });
+
+      it('should return "Hello from middleware function!" (v2)', () => {
+        return request(app.getHttpServer())
+          .get('/v2/middleware/multiple')
+          .expect(200)
+          .expect('Hello from middleware function!');
+      });
+    });
+
+    describe('GET /middleware/neutral', () => {
+      it('should return "Hello from middleware function!"', () => {
+        return request(app.getHttpServer())
+          .get('/middleware/neutral')
+          .expect(200)
+          .expect('Hello from middleware function!');
+      });
+    });
+
+    after(async () => {
+      await app.close();
+    });
+  });
 });

integration/versioning/src/app.module.ts

@@ -1,11 +1,14 @@
-import { Module } from '@nestjs/common';
+import { MiddlewareConsumer, Module } from '@nestjs/common';
 import { AppV1Controller } from './app-v1.controller';
 import { AppV2Controller } from './app-v2.controller';
+import { MiddlewareController } from './middleware.controller';
+import { MultipleMiddlewareVersionController } from './multiple-middleware.controller';
 import { MultipleVersionController } from './multiple.controller';
-import { NoVersioningController } from './no-versioning.controller';
+import { VersionNeutralMiddlewareController } from './neutral-middleware.controller';
 import { VersionNeutralController } from './neutral.controller';
-import { OverrideController } from './override.controller';
+import { NoVersioningController } from './no-versioning.controller';
 import { OverridePartialController } from './override-partial.controller';
+import { OverrideController } from './override.controller';
 
 @Module({
   imports: [],
@@ -17,6 +20,19 @@ import { OverridePartialController } from './override-partial.controller';
     VersionNeutralController,
     OverrideController,
     OverridePartialController,
+    MiddlewareController,
+    MultipleMiddlewareVersionController,
+    VersionNeutralMiddlewareController,
   ],
 })
-export class AppModule {}
+export class AppModule {
+  configure(consumer: MiddlewareConsumer) {
+    consumer
+      .apply((req, res) => res.end('Hello from middleware function!'))
+      .forRoutes(
+        MiddlewareController,
+        MultipleMiddlewareVersionController,
+        VersionNeutralMiddlewareController,
+      );
+  }
+}

integration/versioning/src/middleware.controller.ts

@@ -0,0 +1,18 @@
+import { Controller, Get, Version } from '@nestjs/common';
+
+@Controller({
+  path: 'middleware',
+  version: '1',
+})
+export class MiddlewareController {
+  @Get('/')
+  hello() {
+    return 'Hello from "MiddlewareController"!';
+  }
+
+  @Version('2')
+  @Get('/override')
+  hellov2() {
+    return 'Hello from "MiddlewareController"!';
+  }
+}

integration/versioning/src/multiple-middleware.controller.ts

@@ -0,0 +1,12 @@
+import { Controller, Get } from '@nestjs/common';
+
+@Controller({
+  version: ['1', '2'],
+  path: 'middleware',
+})
+export class MultipleMiddlewareVersionController {
+  @Get('/multiple')
+  multiple() {
+    return 'Multiple Versions 1 or 2';
+  }
+}

integration/versioning/src/neutral-middleware.controller.ts

@@ -0,0 +1,12 @@
+import { Controller, Get, VERSION_NEUTRAL } from '@nestjs/common';
+
+@Controller({
+  path: 'middleware',
+  version: VERSION_NEUTRAL,
+})
+export class VersionNeutralMiddlewareController {
+  @Get('/neutral')
+  neutral() {
+    return 'Neutral';
+  }
+}

packages/core/middleware/middleware-module.ts

@@ -66,7 +66,7 @@ export class MiddlewareModule<
       config,
       appRef,
     );
-    this.routesMapper = new RoutesMapper(container);
+    this.routesMapper = new RoutesMapper(container, config);
     this.resolver = new MiddlewareResolver(middlewareContainer, injector);
     this.routeInfoPathExtractor = new RouteInfoPathExtractor(config);
     this.injector = injector;

packages/core/middleware/routes-mapper.ts

@@ -1,35 +1,48 @@
-import { MODULE_PATH, PATH_METADATA } from '@nestjs/common/constants';
-import { RouteInfo, Type } from '@nestjs/common/interfaces';
+import {
+  MODULE_PATH,
+  PATH_METADATA,
+  VERSION_METADATA,
+} from '@nestjs/common/constants';
+import {
+  RouteInfo,
+  Type,
+  VERSION_NEUTRAL,
+  VersionValue,
+} from '@nestjs/common/interfaces';
 import {
   addLeadingSlash,
   isString,
   isUndefined,
 } from '@nestjs/common/utils/shared.utils';
+import { ApplicationConfig } from '../application-config';
 import { NestContainer } from '../injector/container';
 import { Module } from '../injector/module';
 import { MetadataScanner } from '../metadata-scanner';
-import { PathsExplorer } from '../router/paths-explorer';
+import { PathsExplorer, RouteDefinition } from '../router/paths-explorer';
 import { targetModulesByContainer } from '../router/router-module';
 
 export class RoutesMapper {
   private readonly pathsExplorer: PathsExplorer;
 
-  constructor(private readonly container: NestContainer) {
+  constructor(
+    private readonly container: NestContainer,
+    private readonly applicationConfig: ApplicationConfig,
+  ) {
     this.pathsExplorer = new PathsExplorer(new MetadataScanner());
   }
 
   public mapRouteToRouteInfo(
-    route: Type<any> | RouteInfo | string,
+    controllerOrRoute: Type<any> | RouteInfo | string,
   ): RouteInfo[] {
-    if (isString(route)) {
-      return this.getRouteInfoFromPath(route);
+    if (isString(controllerOrRoute)) {
+      return this.getRouteInfoFromPath(controllerOrRoute);
     }
-    const routePathOrPaths = this.getRoutePath(route);
-    if (this.isRouteInfo(routePathOrPaths, route)) {
-      return this.getRouteInfoFromObject(route);
+    const routePathOrPaths = this.getRoutePath(controllerOrRoute);
+    if (this.isRouteInfo(routePathOrPaths, controllerOrRoute)) {
+      return this.getRouteInfoFromObject(controllerOrRoute);
     }
 
-    return this.getRouteInfoFromController(route, routePathOrPaths);
+    return this.getRouteInfoFromController(controllerOrRoute, routePathOrPaths);
   }
 
   private getRouteInfoFromPath(routePath: string): RouteInfo[] {
@@ -62,33 +75,47 @@ export class RoutesMapper {
       Object.create(controller),
       controller.prototype,
     );
+    const controllerVersion = this.getVersionMetadata(controller);
+    const versioningConfig = this.applicationConfig.getVersioning();
     const moduleRef = this.getHostModuleOfController(controller);
     const modulePath = this.getModulePath(moduleRef?.metatype);
 
     const concatPaths = <T>(acc: T[], currentValue: T[]) =>
       acc.concat(currentValue);
 
+    const toUndefinedIfNeural = (version: VersionValue) =>
+      version === VERSION_NEUTRAL ? undefined : version;
+
+    const toRouteInfo = (item: RouteDefinition, prefix: string) =>
+      item.path
+        ?.map(p => {
+          let endpointPath = modulePath ?? '';
+          endpointPath += this.normalizeGlobalPath(prefix) + addLeadingSlash(p);
+
+          const routeInfo: RouteInfo = {
+            path: endpointPath,
+            method: item.requestMethod,
+          };
+          const version = item.version ?? controllerVersion;
+          if (version && versioningConfig) {
+            if (typeof version !== 'string' && Array.isArray(version)) {
+              return version.map(v => ({
+                ...routeInfo,
+                version: toUndefinedIfNeural(v),
+              }));
+            }
+            routeInfo.version = toUndefinedIfNeural(version);
+          }
+
+          return routeInfo;
+        })
+        .flat() as RouteInfo[];
+
     return []
       .concat(routePath)
       .map(routePath =>
         controllerPaths
-          .map(item =>
-            item.path?.map(p => {
-              let path = modulePath ?? '';
-              path += this.normalizeGlobalPath(routePath) + addLeadingSlash(p);
-
-              const routeInfo: RouteInfo = {
-                path,
-                method: item.requestMethod,
-              };
-
-              if (item.version) {
-                routeInfo.version = item.version;
-              }
-
-              return routeInfo;
-            }),
-          )
+          .map(item => toRouteInfo(item, routePath))
           .reduce(concatPaths, []),
       )
       .reduce(concatPaths, []);
@@ -141,4 +168,16 @@ export class RoutesMapper {
     );
     return modulePath ?? Reflect.getMetadata(MODULE_PATH, metatype);
   }
+
+  private getVersionMetadata(
+    metatype: Type<unknown> | Function,
+  ): VersionValue | undefined {
+    const versioningConfig = this.applicationConfig.getVersioning();
+    if (versioningConfig) {
+      return (
+        Reflect.getMetadata(VERSION_METADATA, metatype) ??
+        versioningConfig.defaultVersion
+      );
+    }
+  }
 }

packages/core/test/middleware/builder.spec.ts

@@ -1,5 +1,11 @@
 import { expect } from 'chai';
-import { Controller, Get, RequestMethod, Version } from '../../../common';
+import {
+  Controller,
+  Get,
+  RequestMethod,
+  Version,
+  VersioningType,
+} from '../../../common';
 import { ApplicationConfig } from '../../application-config';
 import { NestContainer } from '../../injector/container';
 import { MiddlewareBuilder } from '../../middleware/builder';
@@ -13,8 +19,9 @@ describe('MiddlewareBuilder', () => {
   beforeEach(() => {
     const container = new NestContainer();
     const appConfig = new ApplicationConfig();
+    appConfig.enableVersioning({ type: VersioningType.URI });
     builder = new MiddlewareBuilder(
-      new RoutesMapper(container),
+      new RoutesMapper(container, appConfig),
       new NoopHttpAdapter({}),
       new RouteInfoPathExtractor(appConfig),
     );