create cluster creates region if it does not exist

cmd/create.go

@@ -28,6 +28,7 @@ import (
 	"github.com/AlecAivazis/survey/v2"
 	"github.com/apppackio/apppack/auth"
 	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/awserr"
 	"github.com/aws/aws-sdk-go/aws/session"
 	"github.com/aws/aws-sdk-go/service/cloudformation"
 	"github.com/aws/aws-sdk-go/service/codebuild"
@@ -187,6 +188,26 @@ func cloudformationStackURL(region, stackID *string) string {
 	return fmt.Sprintf("https://%s.console.aws.amazon.com/cloudformation/home#/stacks/events?stackId=%s", *region, url.QueryEscape(*stackID))
 }
 
+// stackExists checks if a named Cfn Stack already exists in the region
+func stackExists(sess *session.Session, stackName string) (*bool, error) {
+	cfnSvc := cloudformation.New(sess)
+	stackOutput, err := cfnSvc.DescribeStacks(&cloudformation.DescribeStacksInput{
+		StackName: &stackName,
+	})
+	var exists bool
+	if err != nil {
+		if aerr, ok := err.(awserr.Error); ok {
+			if aerr.Code() == "ValidationError" {
+				exists = false
+				return &exists, nil
+			}
+		}
+		return nil, err
+	}
+	exists = len(stackOutput.Stacks) > 0 && *stackOutput.Stacks[0].StackStatus != cloudformation.StackStatusDeleteComplete
+	return &exists, nil
+}
+
 type stackItem struct {
 	PrimaryID   string `json:"primary_id"`
 	SecondaryID string `json:"secondary_id"`

cmd/createCluster.go

@@ -27,6 +27,7 @@ import (
 	"github.com/aws/aws-sdk-go/aws/session"
 	"github.com/aws/aws-sdk-go/service/cloudformation"
 	"github.com/aws/aws-sdk-go/service/ec2"
+	"github.com/logrusorgru/aurora"
 	"github.com/spf13/cobra"
 )
 
@@ -120,12 +121,29 @@ var createClusterCmd = &cobra.Command{
 		} else {
 			clusterName = args[0]
 		}
-		questions := []*survey.Question{}
-		answers := make(map[string]interface{})
-		addQuestionFromFlag(cmd.Flags().Lookup("domain"), &questions, nil)
 		startSpinner()
 		sess, err := adminSession()
 		checkErr(err)
+		regionExists, err := stackExists(sess, fmt.Sprintf("apppack-region-%s", *sess.Config.Region))
+		checkErr(err)
+		if !*regionExists {
+			Spinner.Stop()
+			fmt.Println(aurora.Blue(fmt.Sprintf("ℹ %s region is not initialized", *sess.Config.Region)))
+			fmt.Printf("If this is your first cluster or you want to setup up a new region, type '%s' to continue.\n", aurora.White("yes"))
+			fmt.Print(aurora.White(fmt.Sprintf("Create cluster in %s region? ", *sess.Config.Region)).String())
+			var confirm string
+			fmt.Scanln(&confirm)
+			if confirm != "yes" {
+				checkErr(fmt.Errorf("aborting due to user input"))
+			}
+			fmt.Printf("running %s...\n", aurora.White("apppack create region"))
+			createRegionCmd.Run(cmd, []string{})
+			fmt.Println("")
+		}
+		questions := []*survey.Question{}
+		answers := make(map[string]interface{})
+		addQuestionFromFlag(cmd.Flags().Lookup("domain"), &questions, nil)
+
 		_, err = stackFromDDBItem(sess, fmt.Sprintf("CLUSTER#%s", clusterName))
 		if err == nil {
 			checkErr(fmt.Errorf("cluster %s already exists", clusterName))
@@ -205,9 +223,13 @@ var createClusterCmd = &cobra.Command{
 
 func init() {
 	createCmd.AddCommand(createClusterCmd)
-	// All flags need to be added to `initCmd` as well so it can call this cmd
-	createClusterCmd.Flags().String("domain", "", "parent domain for apps in the cluster")
+	createClusterCmd.Flags().String("domain", "", "cluster domain name")
 	createClusterCmd.Flags().Bool("ec2", false, "setup cluster with EC2 instances")
 	createClusterCmd.Flags().String("instance-class", "", "autoscaling instance class -- see https://aws.amazon.com/ec2/pricing/on-demand/")
 	createClusterCmd.Flags().String("cidr", "10.100.0.0/16", "network CIDR for VPC")
+	// from createRegion
+	createClusterCmd.Flags().String("dockerhub-username", "", "Docker Hub username")
+	createClusterCmd.Flags().String("dockerhub-access-token", "", "Docker Hub Access Token (https://hub.docker.com/settings/security)")
+	createClusterCmd.Flags().MarkHidden("dockerhub-username")
+	createClusterCmd.Flags().MarkHidden("dockerhub-access-token")
 }

cmd/createRegion.go

@@ -83,7 +83,7 @@ var createRegionCmd = &cobra.Command{
 
 func init() {
 	createCmd.AddCommand(createRegionCmd)
-	// All flags need to be added to `initCmd` as well so it can call this cmd
+	// All flags need to be added to `createCluster` as well so it can call this cmd
 	createRegionCmd.Flags().String("dockerhub-username", "", "Docker Hub username")
 	createRegionCmd.Flags().String("dockerhub-access-token", "", "Docker Hub Access Token (https://hub.docker.com/settings/security)")
 }