Implementation of Mizu view command

cli/cmd/view.go

@@ -1,7 +1,6 @@
 package cmd
 
 import (
-	"fmt"
 	"github.com/spf13/cobra"
 )
 
@@ -9,7 +8,7 @@ var viewCmd = &cobra.Command{
 	Use:   "view",
 	Short: "Open GUI in browser",
 	RunE: func(cmd *cobra.Command, args []string) error {
-		fmt.Println("Not implemented")
+		runMizuView()
 		return nil
 	},
 }

cli/cmd/viewRunner.go

@@ -0,0 +1,37 @@
+package cmd
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"github.com/up9inc/mizu/cli/kubernetes"
+	"github.com/up9inc/mizu/cli/mizu"
+	k8serrors "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"net/http"
+)
+
+func runMizuView() {
+	kubernetesProvider := kubernetes.NewProvider("", "")
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	_, err := kubernetesProvider.ClientSet.CoreV1().Services(mizu.ResourcesNamespace).Get(ctx, mizu.AggregatorPodName, metav1.GetOptions{})
+	var statusError *k8serrors.StatusError
+	if errors.As(err, &statusError) {
+		if statusError.ErrStatus.Reason == metav1.StatusReasonNotFound {
+			fmt.Printf("The %s service not found\n", mizu.AggregatorPodName)
+			return
+		}
+		panic(err)
+	}
+
+	_, err = http.Get("http://localhost:8899/")
+	if err == nil {
+		fmt.Printf("Found a running service %s and open port 8899\n", mizu.AggregatorPodName)
+		return
+	}
+	fmt.Printf("Found service %s, creating port forwarding to 8899\n", mizu.AggregatorPodName)
+	portForwardApiPod(ctx, kubernetesProvider, cancel, &MizuTapOptions{GuiPort: 8899, MizuPodPort: 8899})
+}