feat(anthos-attached-clusters/kind): add outputs (#705)

Author: apeabody

anthos-attached-clusters/kind/README.md

@@ -25,20 +25,21 @@ The other examples and module limit dependancies to terraform core providers, bu
     ```
     Terraform may give a warning along the lines of `Warning: Content-Type is not recognized as a text type, got "application/jwk-set+json"` but this is ok and just a side effect of the `http` provider we're using and the content type the cluster returns for the `jwks` content.
 1. The process should take about a few short minutes to complete.
-1. Set some variables based on the terraform porjects values and use them to generate RBAC for the cluster and credentials to login:
+1. Set some variables based on the terraform projects values and use them to generate RBAC for the cluster and credentials to login:
     ```bash
 
-    PROJECT=$(echo google_container_attached_cluster.primary.project | terraform console | tr -d '"')
-    CLUSTER=$(echo google_container_attached_cluster.primary.name | terraform console | tr -d '"')
-    KUBECONFIG=$(echo kind_cluster.cluster.kubeconfig_path | terraform console | tr -d '"')
+    PROJECT=$(terraform output PROJECT)
+    CLUSTER=$(terraform output CLUSTER)
+    KUBECONFIG=$(terraform output KUBECONFIG)
+    CONTEXT=$(terraform output CONTEXT)
 
     # set this to whomever you'd like to grant access
     [email protected]
     # set this whatever role you intend
     ROLE=clusterrole/cluster-admin
 
     gcloud container fleet memberships generate-gateway-rbac --apply \
-           --kubeconfig ${KUBECONFIG} --context=kind-${CLUSTER} \
+           --kubeconfig ${KUBECONFIG} --context=${CONTEXT} \
            --project=${PROJECT} \
            --membership=${CLUSTER} \
            --role=${ROLE} \

anthos-attached-clusters/kind/main.tf

@@ -18,7 +18,8 @@
 // This is an example of how you might use the attached module with a local kind cluster
 
 locals {
-  cluster_name = "${var.name_prefix}-cluster"
+  cluster_name    = "${var.name_prefix}-cluster"
+  cluster_context = jsondecode(jsonencode(yamldecode(kind_cluster.cluster.kubeconfig).contexts))[0].name
 }
 
 resource "kind_cluster" "cluster" {

anthos-attached-clusters/kind/outputs.tf

@@ -0,0 +1,35 @@
+/**
+ * Copyright 2024 Google LLC
+ *
+ * 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.
+ */
+
+output "PROJECT" {
+  description = "cluster project"
+  value       = google_container_attached_cluster.primary.project
+}
+
+output "CLUSTER" {
+  description = "cluster name"
+  value       = google_container_attached_cluster.primary.name
+}
+
+output "KUBECONFIG" {
+  description = "cluster kubeconfig"
+  value       = kind_cluster.cluster.kubeconfig_path
+}
+
+output "CONTEXT" {
+  description = "cluster context"
+  value       = local.cluster_context
+}