cluster

Documentation

Index

• func DiffWrapper(w io.Writer, mutator configmaps.Mutator) configmaps.Mutator
• func FormatDiff(w io.Writer, leftName, rightName string, left, right *v1.ConfigMap)
• func NewConfigClusterCommand(p *config.KfParams, client configmaps.Client) *cobra.Command

Examples

• DiffWrapper (Changes)
• DiffWrapper (Err)
• DiffWrapper (NoDiff)

Functions

func DiffWrapper

func DiffWrapper(w io.Writer, mutator configmaps.Mutator) configmaps.Mutator

DiffWrapper wraps a mutator and prints out the diff between the original object and the one it returns if there's no error.

Example (Changes)

obj := &v1.ConfigMap{}
obj.Data = map[string]string{"some-key": "some-value"}

contents := &bytes.Buffer{}
wrapper := DiffWrapper(contents, func(obj *v1.ConfigMap) error {
	obj.Data = map[string]string{"some-key": "new-value"}
	return nil
})

fmt.Println("Error:", wrapper(obj))
firstLine := strings.Split(contents.String(), "\n")[0]
fmt.Println("First line:", firstLine)

Output:

Error: <nil>
First line: ConfigMap Diff (-old +new):

Example (Err)

obj := &v1.ConfigMap{}
wrapper := DiffWrapper(os.Stdout, func(_ *v1.ConfigMap) error {
	return errors.New("some-error")
})

fmt.Println(wrapper(obj))

Output:

some-error

Example (NoDiff)

obj := &v1.ConfigMap{}

wrapper := DiffWrapper(os.Stdout, func(cm *v1.ConfigMap) error {
	// don't mutate the object
	return nil
})

wrapper(obj)

Output:

No changes

func FormatDiff

func FormatDiff(w io.Writer, leftName, rightName string, left, right *v1.ConfigMap)

FormatDiff creates a diff between two ConfigMaps and writes it to the given writer.

func NewConfigClusterCommand

func NewConfigClusterCommand(p *config.KfParams, client configmaps.Client) *cobra.Command

NewConfigClusterCommand creates a command that can set facets of a Kf cluster.