add new googleServiceAccount authProvider

Signed-off-by: kim5566 <28945404+kim5566@users.noreply.github.com>

plugins/kubernetes/src/kubernetes-auth-provider/GoogleServiceAccountAuthProvider.ts

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * 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 { KubernetesAuthProvider } from './types';
+import { KubernetesRequestBody } from '@backstage/plugin-kubernetes-common';
+
+export class GoogleServiceAccountAuthProvider
+  implements KubernetesAuthProvider
+{
+  async decorateRequestBodyForAuth(
+    requestBody: KubernetesRequestBody,
+  ): Promise<KubernetesRequestBody> {
+    // No-op, with google service account auth, server's AWS credentials are used for access
+    return requestBody;
+  }
+}

plugins/kubernetes/src/kubernetes-auth-provider/KubernetesAuthProviders.ts

@@ -20,6 +20,7 @@ import { GoogleKubernetesAuthProvider } from './GoogleKubernetesAuthProvider';
 import { ServiceAccountKubernetesAuthProvider } from './ServiceAccountKubernetesAuthProvider';
 import { AwsKubernetesAuthProvider } from './AwsKubernetesAuthProvider';
 import { OAuthApi } from '@backstage/core-plugin-api';
+import { GoogleServiceAccountAuthProvider } from './GoogleServiceAccountAuthProvider';
 
 export class KubernetesAuthProviders implements KubernetesAuthProvidersApi {
   private readonly kubernetesAuthProviderMap: Map<
@@ -37,6 +38,10 @@ export class KubernetesAuthProviders implements KubernetesAuthProvidersApi {
       'serviceAccount',
       new ServiceAccountKubernetesAuthProvider(),
     );
+    this.kubernetesAuthProviderMap.set(
+      'googleServiceAccount',
+      new GoogleServiceAccountAuthProvider(),
+    );
     this.kubernetesAuthProviderMap.set('aws', new AwsKubernetesAuthProvider());
   }