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

packages/backend-common/package.json

@@ -29,7 +29,9 @@
     "clean": "backstage-cli clean"
   },
   "dependencies": {
+    "@backstage/cli-common": "^0.1.1-alpha.16",
     "@backstage/config": "^0.1.1-alpha.16",
+    "@backstage/config-loader": "^0.1.1-alpha.16",
     "@types/cors": "^2.8.6",
     "@types/express": "^4.17.6",
     "compression": "^1.7.4",

packages/backend-common/src/config.ts

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2020 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { findPaths } from '@backstage/cli-common';
+import { loadConfig } from '@backstage/config-loader';
+
+/**
+ * Load configuration for a Backend
+ */
+export async function loadBackendConfig() {
+  const paths = findPaths(__dirname);
+  const configs = await loadConfig({
+    rootPath: paths.targetRoot,
+    shouldReadSecrets: true,
+  });
+  return configs;
+}

packages/backend-common/src/index.ts

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+export * from './config';
 export * from './errors';
 export * from './logging';
 export * from './middleware';