fix: delete command

There was hard-coded `faas` namespace.

client.go

@@ -8,7 +8,6 @@ import (
 )
 
 const (
-	DefaultNamespace    = "faas"
 	DefaultRegistry     = "docker.io"
 	DefaultRuntime      = "go"
 	DefaultTrigger      = "http"

cmd/completion_util.go

@@ -6,14 +6,13 @@ import (
 	"os/user"
 	"path"
 
-	"github.com/boson-project/faas"
 	"github.com/boson-project/faas/buildpacks"
 	"github.com/boson-project/faas/knative"
 	"github.com/spf13/cobra"
 )
 
 func CompleteFunctionList(cmd *cobra.Command, args []string, toComplete string) (strings []string, directive cobra.ShellCompDirective) {
-	lister, err := knative.NewLister(faas.DefaultNamespace)
+	lister, err := knative.NewLister("")
 	if err != nil {
 		directive = cobra.ShellCompDirectiveError
 		return

cmd/delete.go

@@ -12,6 +12,7 @@ import (
 func init() {
 	root.AddCommand(deleteCmd)
 	deleteCmd.Flags().StringP("path", "p", cwd(), "Path to the project which should be deleted - $FAAS_PATH")
+	deleteCmd.Flags().StringP("namespace", "n", "", "Override namespace in which to search for Functions.  Default is to use currently active underlying platform setting - $FAAS_NAMESPACE")
 	deleteCmd.Flags().BoolP("yes", "y", false, "When in interactive mode (attached to a TTY), skip prompting the user. - $FAAS_YES")
 }
 
@@ -21,14 +22,14 @@ var deleteCmd = &cobra.Command{
 	Long:              `Removes the deployed Function by name, by explicit path, or by default for the current directory.  No local files are deleted.`,
 	SuggestFor:        []string{"remove", "rm", "del"},
 	ValidArgsFunction: CompleteFunctionList,
-	PreRunE:           bindEnv("path", "yes"),
+	PreRunE:           bindEnv("path", "yes", "namespace"),
 	RunE:              runDelete,
 }
 
 func runDelete(cmd *cobra.Command, args []string) (err error) {
 	config := newDeleteConfig(args).Prompt()
 
-	remover := knative.NewRemover()
+	remover := knative.NewRemover(config.Namespace)
 	remover.Verbose = config.Verbose
 
 	function := faas.Function{Root: config.Path, Name: config.Name}
@@ -41,10 +42,11 @@ func runDelete(cmd *cobra.Command, args []string) (err error) {
 }
 
 type deleteConfig struct {
-	Name    string
-	Path    string
-	Verbose bool
-	Yes     bool
+	Name      string
+	Namespace string
+	Path      string
+	Verbose   bool
+	Yes       bool
 }
 
 // newDeleteConfig returns a config populated from the current execution context
@@ -55,10 +57,11 @@ func newDeleteConfig(args []string) deleteConfig {
 		name = args[0]
 	}
 	return deleteConfig{
-		Path:    viper.GetString("path"),
-		Name:    deriveName(name, viper.GetString("path")), // args[0] or derived
-		Verbose: viper.GetBool("verbose"),                  // defined on root
-		Yes:     viper.GetBool("yes"),
+		Path:      viper.GetString("path"),
+		Namespace: viper.GetString("namespace"),
+		Name:      deriveName(name, viper.GetString("path")), // args[0] or derived
+		Verbose:   viper.GetBool("verbose"),                  // defined on root
+		Yes:       viper.GetBool("yes"),
 	}
 }
 

knative/remover.go

@@ -3,16 +3,16 @@ package knative
 import (
 	"bytes"
 	"fmt"
-	"github.com/boson-project/faas"
 	"github.com/boson-project/faas/k8s"
 	"io"
+	"k8s.io/client-go/tools/clientcmd"
 	commands "knative.dev/client/pkg/kn/commands"
 	"os"
 	"time"
 )
 
-func NewRemover() *Remover {
-	return &Remover{Namespace: faas.DefaultNamespace}
+func NewRemover(namespaceOverride string) *Remover {
+	return &Remover{Namespace: namespaceOverride}
 }
 
 type Remover struct {
@@ -41,6 +41,11 @@ func (remover *Remover) Remove(name string) (err error) {
 	if err != nil {
 		return err
 	}
+	if remover.Namespace == "" {
+		loadingRules := clientcmd.NewDefaultClientConfigLoadingRules()
+		clientConfig := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(loadingRules, &clientcmd.ConfigOverrides{})
+		remover.Namespace, _, _ = clientConfig.Namespace()
+	}
 	client, err := p.NewServingClient(remover.Namespace)
 	if err != nil {
 		return fmt.Errorf("remover failed to create new serving client: %v", err)