refactor: add an experimental flag for the embedded proxy

src/lib/experimental.ts

@@ -3,6 +3,7 @@ export interface IExperimentalOptions {
     clientFeatureMemoize?: IExperimentalToggle;
     userGroups?: boolean;
     anonymiseEventLog?: boolean;
+    embedProxy?: boolean;
 }
 
 export interface IExperimentalToggle {

src/lib/middleware/api-token-middleware.ts

@@ -17,7 +17,8 @@ const apiAccessMiddleware = (
     {
         getLogger,
         authentication,
-    }: Pick<IUnleashConfig, 'getLogger' | 'authentication'>,
+        experimental,
+    }: Pick<IUnleashConfig, 'getLogger' | 'authentication' | 'experimental'>,
     { apiTokenService }: any,
 ): any => {
     const logger = getLogger('/middleware/api-token.ts');
@@ -40,7 +41,8 @@ const apiAccessMiddleware = (
             if (apiUser) {
                 if (
                     (apiUser.type === CLIENT && !isClientApi(req)) ||
-                    (apiUser.type === PROXY && !isProxyApi(req))
+                    (apiUser.type === PROXY && !isProxyApi(req)) ||
+                    (apiUser.type === PROXY && !experimental.embedProxy)
                 ) {
                     res.status(403).send({ message: TOKEN_TYPE_ERROR_MESSAGE });
                     return;

src/lib/routes/index.ts

@@ -27,7 +27,13 @@ class IndexRouter extends Controller {
         );
         this.use('/api/admin', new AdminApi(config, services).router);
         this.use('/api/client', new ClientApi(config, services).router);
-        this.use('/api/frontend', new ProxyController(config, services).router);
+
+        if (config.experimental.embedProxy) {
+            this.use(
+                '/api/frontend',
+                new ProxyController(config, services).router,
+            );
+        }
     }
 }
 

src/server-dev.ts

@@ -34,6 +34,7 @@ process.nextTick(async () => {
                     metricsV2: { enabled: true },
                     anonymiseEventLog: false,
                     userGroups: true,
+                    embedProxy: true,
                 },
                 authentication: {
                     initApiTokens: [

src/test/config/test-config.ts

@@ -24,6 +24,7 @@ export function createTestConfig(config?: IUnleashOptions): IUnleashConfig {
         },
         experimental: {
             userGroups: true,
+            embedProxy: true,
         },
     };
     const options = mergeAll<IUnleashOptions>([testConfig, config]);