Added cloud-spanner emulator add-on.

cmd/minikube/cmd/config/addons_list_test.go

@@ -77,7 +77,7 @@ func TestAddonsList(t *testing.T) {
 			Ambassador *interface{} `json:"ambassador"`
 		}
 
-		b := make([]byte, 571)
+		b := make([]byte, 590)
 		r, w, err := os.Pipe()
 		if err != nil {
 			t.Fatalf("failed to create pipe: %v", err)

deploy/addons/assets.go

@@ -151,4 +151,8 @@ var (
 	// HeadlampAssets assets for headlamp addon
 	//go:embed headlamp/*.yaml headlamp/*.tmpl
 	HeadlampAssets embed.FS
+
+	// CloudSpanner assets for cloud-spanner addon
+	//go:embed cloud-spanner/*.yaml
+	CloudSpanner embed.FS
 )

deploy/addons/cloud-spanner/deployment.yaml

@@ -0,0 +1,45 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: cloud-spanner-emulator
+  labels:
+    app: cloud-spanner-emulator
+    gcp-auth-skip-secret: "true"
+    kubernetes.io/minikube-addons-endpoint: cloud-spanner
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: cloud-spanner-emulator
+  template:
+    metadata:
+      labels:
+        app: cloud-spanner-emulator
+    spec:
+      containers:
+        - name: cloud-spanner-emulator
+          image: gcr.io/cloud-spanner-emulator/emulator:latest
+          imagePullPolicy: IfNotPresent
+          ports:
+          - containerPort: 9020
+            name: http
+          - containerPort: 9010
+            name: grpc
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: cloud-spanner-emulator
+  labels:
+    app: cloud-spanner-emulator
+spec:
+  type: NodePort
+  ports:
+    - port: 9020
+      name: http
+    - port: 9010
+      name: grpc
+  selector:
+    app: cloud-spanner-emulator

pkg/addons/config.go

@@ -207,4 +207,9 @@ var Addons = []*Addon{
 		set:       SetBool,
 		callbacks: []setFn{EnableOrDisableAddon},
 	},
+	{
+		name:      "cloud-spanner",
+		set:       SetBool,
+		callbacks: []setFn{EnableOrDisableAddon},
+	},
 }

pkg/minikube/assets/addons.go

@@ -742,6 +742,13 @@ var Addons = map[string]*Addon{
 		map[string]string{
 			"Headlamp": "ghcr.io",
 		}),
+	"cloud-spanner": NewAddon([]*BinAsset{
+		MustBinAsset(addons.CloudSpanner, "cloud-spanner/deployment.yaml", vmpath.GuestAddonsDir, "deployment.yaml", "6040"),
+	}, false, "cloud-spanner", "Google", "", "https://minikube.sigs.k8s.io/docs/handbook/addons/cloud-spanner/", map[string]string{
+		"CloudSpannerAddon": "cloud-spanner-emulator/emulator",
+	}, map[string]string{
+		"CloudSpannerAddon": "gcr.io",
+	}),
 }
 
 // parseMapString creates a map based on `str` which is encoded as <key1>=<value1>,<key2>=<value2>,...

site/content/en/docs/contrib/tests.en.md

@@ -44,6 +44,9 @@ tests the GCP Auth addon with either phony or real credentials and makes sure th
 
 #### validateHeadlampAddon
 
+#### validateCloudSpannerAddon
+tests the cloud-spanner addon by ensuring the deployment and pod come up and addon disables
+
 ## TestCertOptions
 makes sure minikube certs respect the --apiserver-ips and --apiserver-names parameters
 

site/content/en/docs/handbook/addons/cloud-spanner.md

@@ -0,0 +1,53 @@
+---
+title: "Using Cloud Spanner Addon"
+linkTitle: "Cloud Spanner"
+weight: 1
+date: 2022-10-14
+---
+
+## Cloud Spanner Addon
+
+[Cloud Spanner](https://cloud.google.com/spanner) is a fully managed relational database. The Cloud Spanner addon provides a local emulator to test your local application without incurring the cost of an actual spanner instance. 
+
+### Enable Cloud Spanner on minikube
+
+To enable this addon, simply run:
+```shell script
+minikube addons enable cloud-spanner
+```
+
+### Cloud Spanner Endpoints
+Cloud Spanner provides two different ports, HTTP and GRPC. List Cloud Spanner emulator urls by running:
+``` shell
+minikube service cloud-spanner-emulator
+
+####################Sample Output#########################
+|-----------|------------------------|-------------|---------------------------|
+| NAMESPACE |          NAME          | TARGET PORT |            URL            |
+|-----------|------------------------|-------------|---------------------------|
+| default   | cloud-spanner-emulator | http/9020   | http://192.168.49.2:30233 |
+|           |                        | grpc/9010   | http://192.168.49.2:30556 |
+|-----------|------------------------|-------------|---------------------------|
+[default cloud-spanner-emulator http/9020
+grpc/9010 http://192.168.49.2:30233
+http://192.168.49.2:30556]
+```
+
+### Using Cloud Spanner within a cluster
+Cloud Spanner emulator can be used via endpoint `cloud-spanner-emulator:9020` for http clients and `cloud-spanner-emulator:9010` for grpc clients respectively. If you're using the standard client library for Cloud Spanner then set `SPANNER_EMULATOR_HOST` to the GRPC endpoint `cloud-spanner-emulator:9010`.
+
+### Testing installation
+
+```shell script
+kubectl get pods -n cloud-spanner-emulator
+```
+
+If everything went well, there should be no errors about Cloud Spanner's installation in your minikube cluster.
+
+### Disable Cloud Spanner
+
+To disable this addon, simply run:
+
+```shell script
+minikube addons disable cloud-spanner
+```

test/integration/addons_test.go

@@ -66,7 +66,7 @@ func TestAddons(t *testing.T) {
 			t.Fatalf("Failed setting GOOGLE_CLOUD_PROJECT env var: %v", err)
 		}
 
-		args := append([]string{"start", "-p", profile, "--wait=true", "--memory=4000", "--alsologtostderr", "--addons=registry", "--addons=metrics-server", "--addons=volumesnapshots", "--addons=csi-hostpath-driver", "--addons=gcp-auth"}, StartArgs()...)
+		args := append([]string{"start", "-p", profile, "--wait=true", "--memory=4000", "--alsologtostderr", "--addons=registry", "--addons=metrics-server", "--addons=volumesnapshots", "--addons=csi-hostpath-driver", "--addons=gcp-auth", "--addons=cloud-spanner"}, StartArgs()...)
 		if !NoneDriver() { // none driver does not support ingress
 			args = append(args, "--addons=ingress", "--addons=ingress-dns")
 		}
@@ -97,6 +97,7 @@ func TestAddons(t *testing.T) {
 			{"Olm", validateOlmAddon},
 			{"CSI", validateCSIDriverAndSnapshots},
 			{"Headlamp", validateHeadlampAddon},
+			{"CloudSpanner", validateCloudSpannerAddon},
 		}
 		for _, tc := range tests {
 			tc := tc
@@ -743,3 +744,22 @@ func validateHeadlampAddon(ctx context.Context, t *testing.T, profile string) {
 		t.Fatalf("failed waiting for headlamp pod: %v", err)
 	}
 }
+
+// validateCloudSpannerAddon tests the cloud-spanner addon by ensuring the deployment and pod come up and addon disables
+func validateCloudSpannerAddon(ctx context.Context, t *testing.T, profile string) {
+	defer PostMortemLogs(t, profile)
+
+	client, err := kapi.Client(profile)
+	if err != nil {
+		t.Fatalf("failed to get Kubernetes client for %s: %v", profile, err)
+	}
+	if err := kapi.WaitForDeploymentToStabilize(client, "default", "cloud-spanner-emulator", Minutes(6)); err != nil {
+		t.Errorf("failed waiting for cloud-spanner-emulator deployment to stabilize: %v", err)
+	}
+	if _, err := PodWait(ctx, t, profile, "default", "app=cloud-spanner-emulator", Minutes(6)); err != nil {
+		t.Errorf("failed waiting for app=cloud-spanner-emulator pod: %v", err)
+	}
+	if rr, err := Run(t, exec.CommandContext(ctx, Target(), "addons", "disable", "cloud-spanner", "-p", profile)); err != nil {
+		t.Errorf("failed to disable cloud-spanner addon: args %q : %v", rr.Command(), err)
+	}
+}