change kinflate to kustomize

util/diff.go

@@ -0,0 +1,104 @@
+/*
+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 util
+
+import (
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
+	"github.com/ghodss/yaml"
+
+	"k8s.io/utils/exec"
+)
+
+// DiffProgram finds and run the diff program. The value of
+// KUBERNETES_EXTERNAL_DIFF environment variable will be used a diff
+// program. By default, `diff(1)` will be used.
+type DiffProgram struct {
+	Exec   exec.Interface
+	Stdout io.Writer
+	Stderr io.Writer
+}
+
+func (d *DiffProgram) getCommand(args ...string) exec.Cmd {
+	diff := ""
+	if envDiff := os.Getenv("KUBERNETES_EXTERNAL_DIFF"); envDiff != "" {
+		diff = envDiff
+	} else {
+		diff = "diff"
+		args = append([]string{"-u", "-N"}, args...)
+	}
+
+	cmd := d.Exec.Command(diff, args...)
+	cmd.SetStdout(d.Stdout)
+	cmd.SetStderr(d.Stderr)
+
+	return cmd
+}
+
+// Run runs the detected diff program. `from` and `to` are the directory to diff.
+func (d *DiffProgram) Run(from, to string) error {
+	d.getCommand(from, to).Run() // Ignore diff return code
+	return nil
+}
+
+// Printer is used to print an object.
+type Printer struct{}
+
+// Print the object inside the writer w.
+func (p *Printer) Print(obj interface{}, w io.Writer) error {
+	if obj == nil {
+		return nil
+	}
+	data, err := yaml.Marshal(obj)
+	if err != nil {
+		return err
+	}
+	_, err = w.Write(data)
+	return err
+
+}
+
+// Directory creates a new temp directory, and allows to easily create new files.
+type Directory struct {
+	Name string
+}
+
+// CreateDirectory does create the actual disk directory, and return a
+// new representation of it.
+func CreateDirectory(prefix string) (*Directory, error) {
+	name, err := ioutil.TempDir("", prefix+"-")
+	if err != nil {
+		return nil, err
+	}
+
+	return &Directory{
+		Name: name,
+	}, nil
+}
+
+// NewFile creates a new file in the directory.
+func (d *Directory) NewFile(name string) (*os.File, error) {
+	return os.OpenFile(filepath.Join(d.Name, name), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0700)
+}
+
+// Delete removes the directory recursively.
+func (d *Directory) Delete() error {
+	return os.RemoveAll(d.Name)
+}