config-loader,backend-common: refactor config loading to pass in path and use common util for backend

plugins/proxy-backend/package.json

@@ -21,7 +21,6 @@
   "dependencies": {
     "@backstage/backend-common": "^0.1.1-alpha.16",
     "@backstage/config": "^0.1.1-alpha.16",
-    "@backstage/config-loader": "^0.1.1-alpha.16",
     "@types/express": "^4.17.6",
     "express": "^4.17.1",
     "express-promise-router": "^3.0.3",

plugins/proxy-backend/src/service/router.test.ts

@@ -17,12 +17,12 @@
 import { createRouter } from './router';
 import winston from 'winston';
 import { ConfigReader } from '@backstage/config';
-import { loadConfig } from '@backstage/config-loader';
+import { loadBackendConfig } from '@backstage/backend-common';
 
 describe('createRouter', () => {
   it('works', async () => {
     const logger = winston.createLogger();
-    const config = ConfigReader.fromConfigs(await loadConfig());
+    const config = ConfigReader.fromConfigs(await loadBackendConfig());
     const router = await createRouter({
       config,
       logger,

plugins/proxy-backend/src/service/standaloneServer.ts

@@ -14,12 +14,14 @@
  * limitations under the License.
  */
 
-import { createServiceBuilder } from '@backstage/backend-common';
+import {
+  createServiceBuilder,
+  loadBackendConfig,
+} from '@backstage/backend-common';
 import { Server } from 'http';
 import { Logger } from 'winston';
 import { createRouter } from './router';
 import { ConfigReader } from '@backstage/config';
-import { loadConfig } from '@backstage/config-loader';
 
 export interface ServerOptions {
   port: number;
@@ -34,7 +36,7 @@ export async function startStandaloneServer(
 
   logger.debug('Creating application...');
 
-  const config = ConfigReader.fromConfigs(await loadConfig());
+  const config = ConfigReader.fromConfigs(await loadBackendConfig());
   const router = await createRouter({
     config,
     logger,