backstage: add healthcheck

Signed-off-by: Victor Login <batazor@evrone.com>

internal/services/backstage/packages/backend/src/index.ts

@@ -29,6 +29,7 @@ import proxy from './plugins/proxy';
 import techdocs from './plugins/techdocs';
 import search from './plugins/search';
 import kubernetes from './plugins/kubernetes';
+import healthcheck from './plugins/healthcheck';
 import todo from './plugins/todo';
 import { PluginEnvironment } from './types';
 import { ServerPermissionClient } from '@backstage/plugin-permission-node';
@@ -80,6 +81,7 @@ async function main() {
   });
   const createEnv = makeCreateEnv(config);
 
+  const healthcheckEnv = useHotMemoize(module, () => createEnv('healthcheck'));
   const catalogEnv = useHotMemoize(module, () => createEnv('catalog'));
   const scaffolderEnv = useHotMemoize(module, () => createEnv('scaffolder'));
   const authEnv = useHotMemoize(module, () => createEnv('auth'));
@@ -105,6 +107,7 @@ async function main() {
 
   const service = createServiceBuilder(module)
     .loadConfig(config)
+    .addRouter('', await healthcheck(healthcheckEnv))
     .addRouter('/api', apiRouter)
     .addRouter('', await app(appEnv));
 

internal/services/backstage/packages/backend/src/plugins/healthcheck.ts

@@ -0,0 +1,22 @@
+/*
+ * 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 { createStatusCheckRouter } from '@backstage/backend-common';
+import { PluginEnvironment } from '../types';
+
+export default async function createRouter({ logger }: PluginEnvironment) {
+  return await createStatusCheckRouter({ logger, path: '/healthcheck' });
+}

ops/Helm/backstage/values.yaml

@@ -77,7 +77,7 @@ deploy:
 
   image:
     repository: registry.gitlab.com/shortlink-org/shortlink/backstage
-    tag: 0.14.5
+    tag: 0.14.5.1
     # -- Global imagePullPolicy
     # Default: 'Always' if image tag is 'latest', else 'IfNotPresent'
     # Ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
@@ -89,15 +89,15 @@ deploy:
     initialDelaySeconds: 15
     timeoutSeconds: 15
     httpGet:
-      path: /backstage
+      path: /healthcheck
       port: 7007
 
   # -- define a readiness probe that checks every 5 seconds, starting after 5 seconds
   readinessProbe:
     initialDelaySeconds: 15
     timeoutSeconds: 15
     httpGet:
-      path: /backstage
+      path: /healthcheck
       port: 7007
 
   securityContext: