Add subcommand: edit fix

pkg/commands/edit/all.go

@@ -19,6 +19,7 @@ package edit
 import (
 	"github.com/spf13/cobra"
 	"sigs.k8s.io/kustomize/pkg/commands/edit/add"
+	"sigs.k8s.io/kustomize/pkg/commands/edit/fix"
 	"sigs.k8s.io/kustomize/pkg/commands/edit/set"
 	"sigs.k8s.io/kustomize/pkg/fs"
 	"sigs.k8s.io/kustomize/pkg/ifc"
@@ -45,6 +46,7 @@ func NewCmdEdit(fsys fs.FileSystem, v ifc.Validator, kf ifc.KunstructuredFactory
 	c.AddCommand(
 		add.NewCmdAdd(fsys, v, kf),
 		set.NewCmdSet(fsys, v),
+		fix.NewCmdFix(fsys),
 	)
 	return c
 }

pkg/commands/edit/fix/fix.go

@@ -0,0 +1,62 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package fix
+
+import (
+	"log"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"sigs.k8s.io/kustomize/pkg/commands/kustfile"
+	"sigs.k8s.io/kustomize/pkg/fs"
+)
+
+// NewCmdFix returns an instance of 'fix' subcommand.
+func NewCmdFix(fSys fs.FileSystem) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "fix",
+		Short: "Fix the missing fields in kustomization file",
+		Long:  "",
+		Example: `
+	# Fix the missing and deprecated fields in kustomization file
+	kustomize fix
+
+`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return RunFix(fSys)
+		},
+	}
+	return cmd
+}
+
+func RunFix(fSys fs.FileSystem) error {
+	mf, err := kustfile.NewKustomizationFile(fSys)
+	if err != nil {
+		return err
+	}
+
+	m, err := mf.Read()
+	if err != nil {
+		return err
+	}
+	msgs := m.DealWithMissingFields()
+	if len(msgs) > 0 {
+		log.Printf(strings.Join(msgs, "\n"))
+	}
+
+	return mf.Write(m)
+}

pkg/commands/edit/fix/fix_test.go

@@ -0,0 +1,45 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package fix
+
+import (
+	"strings"
+	"testing"
+
+	"sigs.k8s.io/kustomize/pkg/fs"
+)
+
+func TestFix(t *testing.T) {
+	fakeFS := fs.MakeFakeFS()
+	fakeFS.WriteTestKustomizationWith([]byte(`nameprefix: some-prefix-`))
+
+	cmd := NewCmdFix(fakeFS)
+	err := cmd.RunE(cmd, nil)
+	if err != nil {
+		t.Errorf("unexpected cmd error: %v", err)
+	}
+	content, err := fakeFS.ReadTestKustomization()
+	if err != nil {
+		t.Errorf("unexpected read error: %v", err)
+	}
+	if !strings.Contains(string(content), "apiVersion: ") {
+		t.Errorf("expected apiVersion in kustomization")
+	}
+	if !strings.Contains(string(content), "kind: Kustomization") {
+		t.Errorf("expected kind in kustomization")
+	}
+}

pkg/fs/fakefs.go

@@ -40,7 +40,9 @@ func MakeFakeFS() *fakeFs {
 }
 
 // kustomizationContent is used in tests.
-const kustomizationContent = `namePrefix: some-prefix
+const kustomizationContent = `apiVersion: v1
+kind: Kustomization
+namePrefix: some-prefix
 nameSuffix: some-suffix
 # Labels to add to all objects and selectors.
 # These labels would also be used to form the selector for apply --prune

pkg/types/kustomization.go

@@ -151,15 +151,29 @@ func (k *Kustomization) DealWithDeprecatedFields() {
 	}
 }
 
+// DealWithMissingFields fills the missing fields
+func (k *Kustomization) DealWithMissingFields() []string {
+	var msgs []string
+	if k.APIVersion == "" {
+		k.APIVersion = KustomizationVersion
+		msgs = append(msgs, "Fixed the missing field by adding apiVersion: "+KustomizationVersion)
+	}
+	if k.Kind == "" {
+		k.Kind = KustomizationKind
+		msgs = append(msgs, "Fixed the missing field by adding apiKind: "+KustomizationKind)
+	}
+	return msgs
+}
+
 func (k *Kustomization) EnforceFields() ([]string, []string) {
 	var msgs, errs []string
 	if k.APIVersion == "" {
-		msgs = append(msgs, "apiVersion is not defined. This will not be allowed in the next release.\nPlease add apiVersion: "+KustomizationVersion)
+		msgs = append(msgs, "apiVersion is not defined. This will not be allowed in the next release.\nPlease run `kustomize edit fix`")
 	} else if k.APIVersion != KustomizationVersion {
 		errs = append(errs, "apiVersion should be "+KustomizationVersion)
 	}
 	if k.Kind == "" {
-		msgs = append(msgs, "kind is not defined. This will not be allowed in the next release.\nPlease add kind: "+KustomizationKind)
+		msgs = append(msgs, "kind is not defined. This will not be allowed in the next release.\nPlease run `kustomize edit fix`")
 	} else if k.Kind != KustomizationKind {
 		errs = append(errs, "kind should be "+KustomizationKind)
 	}