Add --all flag for deletes in cli (#145)

docs/reference/kubedb_delete.md

@@ -19,7 +19,7 @@ Delete resources by filenames, stdin, resources and names, or by resources and l
 Note that the delete command does NOT do resource version checks
 
 ```
-kubedb delete ([-f FILENAME] | TYPE [(NAME | -l label)]) [flags]
+kubedb delete ([-f FILENAME] | TYPE [(NAME | -l label | --all)]) [flags]
 ```
 
 ### Examples
@@ -33,11 +33,18 @@ kubedb delete ([-f FILENAME] | TYPE [(NAME | -l label)]) [flags]
   
   # Delete elasticsearch with label elasticsearch.kubedb.com/name=elasticsearch-demo.
   kubedb delete elasticsearch -l elasticsearch.kubedb.com/name=elasticsearch-demo
+  
+  # Force delete a mysql object
+  kubedb delete mysql ms-demo --force
+  
+  # Delete all mysql objects
+  kubedb delete mysql --all
 ```
 
 ### Options
 
 ```
+      --all                    Delete all resources, including uninitialized ones, in the namespace of the specified resource types.
   -f, --filename stringSlice   Filename to use to delete the resource
       --force                  Immediate deletion of some resources may result in inconsistency or data loss.
   -h, --help                   help for delete

pkg/cmds/delete.go

@@ -9,6 +9,7 @@ import (
 	"github.com/kubedb/cli/pkg/util"
 	"github.com/kubedb/cli/pkg/validator"
 	"github.com/spf13/cobra"
+	kerr "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/api/meta"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"k8s.io/apimachinery/pkg/types"
@@ -34,14 +35,20 @@ var (
 		cat postgres.json | kubedb delete -f -
 
 		# Delete elasticsearch with label elasticsearch.kubedb.com/name=elasticsearch-demo.
-		kubedb delete elasticsearch -l elasticsearch.kubedb.com/name=elasticsearch-demo`)
+		kubedb delete elasticsearch -l elasticsearch.kubedb.com/name=elasticsearch-demo
+
+		# Force delete a mysql object
+		kubedb delete mysql ms-demo --force
+
+		# Delete all mysql objects
+		kubedb delete mysql --all`)
 )
 
 func NewCmdDelete(out, errOut io.Writer) *cobra.Command {
 	options := &resource.FilenameOptions{}
 
 	cmd := &cobra.Command{
-		Use:     "delete ([-f FILENAME] | TYPE [(NAME | -l label)])",
+		Use:     "delete ([-f FILENAME] | TYPE [(NAME | -l label | --all)])",
 		Short:   "Delete resources by filenames, stdin, resources and names, or by resources and label selector",
 		Long:    deleteLong,
 		Example: deleteExample,
@@ -57,6 +64,7 @@ func NewCmdDelete(out, errOut io.Writer) *cobra.Command {
 
 func RunDelete(f cmdutil.Factory, cmd *cobra.Command, out io.Writer, args []string, options *resource.FilenameOptions) error {
 	selector := cmdutil.GetFlagString(cmd, "selector")
+	deleteAll := cmdutil.GetFlagBool(cmd, "all")
 	cmdNamespace, enforceNamespace := util.GetNamespace(cmd)
 	categoryExpander := f.CategoryExpander()
 	mapper, typer, err := f.UnstructuredObject()
@@ -83,6 +91,7 @@ func RunDelete(f cmdutil.Factory, cmd *cobra.Command, out io.Writer, args []stri
 		NamespaceParam(cmdNamespace).DefaultNamespace().
 		FilenameParam(enforceNamespace, options).
 		SelectorParam(selector).
+		SelectAllParam(deleteAll).
 		ResourceTypeOrNameArgs(false, args...).RequireObject(true).
 		Flatten().
 		Do()
@@ -153,7 +162,7 @@ func deleteResource(info *resource.Info, out io.Writer, mapper meta.RESTMapper,
 			[]byte(forceDeletePatch),
 		)
 	}
-	if err := resource.NewHelper(info.Client, info.Mapping).Delete(info.Namespace, info.Name); err != nil {
+	if err := resource.NewHelper(info.Client, info.Mapping).Delete(info.Namespace, info.Name); err != nil && !kerr.IsNotFound(err) {
 		return cmdutil.AddSourceToErr("deleting", info.Source, err)
 	}
 	cmdutil.PrintSuccess(mapper, shortOutput, out, info.Mapping.Resource, info.Name, false, "deleted")

pkg/util/flags.go

@@ -25,6 +25,7 @@ func AddCreateFlags(cmd *cobra.Command, options *resource.FilenameOptions) {
 
 func AddDeleteFlags(cmd *cobra.Command, options *resource.FilenameOptions) {
 	cmd.Flags().StringP("namespace", "n", core.NamespaceDefault, "Delete object(s) from this namespace.")
+	cmd.Flags().BoolP("all", "", false, "Delete all resources, including uninitialized ones, in the namespace of the specified resource types.")
 	cmd.Flags().BoolP("force", "", false, "Immediate deletion of some resources may result in inconsistency or data loss.")
 	cmd.Flags().StringP("selector", "l", "", "Selector (label query) to filter on.")
 	cmd.Flags().StringP("output", "o", "", "Output mode. Use \"-o name\" for shorter output (resource/name).")