kubectl

package
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Published: Nov 19, 2014 License: Apache-2.0 Imports: 27 Imported by: 0

Documentation

Overview

Package kubectl is a set of libraries that are used by the kubectl command line tool. They are separated out into a library to support unit testing. Most functionality should be included in this package, and the main kubectl should really just be an entry point.

A set of common functions needed by cmd/kubectl and pkg/kubectl packages.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func ExpandResourceShortcut

func ExpandResourceShortcut(resource string) string

ExpandResourceShortcut will return the expanded version of resource (something that a pkg/api/meta.RESTMapper can understand), if it is indeed a shortcut. Otherwise, will return resource unmodified. TODO: Combine with RESTMapper stuff to provide a general solution to this problem.

func GetClientVersion

func GetClientVersion(w io.Writer)

func GetKubeClient

func GetKubeClient(config *client.Config, matchVersion bool) (*client.Client, error)

func GetVersion

func GetVersion(w io.Writer, kubeClient client.Interface)

func LoadClientAuthInfoOrPrompt

func LoadClientAuthInfoOrPrompt(path string, r io.Reader) (*clientauth.Info, error)

LoadClientAuthInfoOrPrompt parses an AuthInfo object from a file path. It prompts user and creates file if it doesn't exist.

func SaveNamespaceInfo

func SaveNamespaceInfo(path string, ns *NamespaceInfo) error

SaveNamespaceInfo saves a NamespaceInfo object at the specified file path.

func WatchLoop

func WatchLoop(w watch.Interface, printer ResourcePrinter, out io.Writer)

WatchLoop loops, writing objects in the events from w to printer. If user sends interrupt signal, shut down cleanly. Otherwise, never return.

Types

type Describer

type Describer interface {
	Describe(namespace, name string) (output string, err error)
}

Describer generates output for the named resource or an error if the output could not be generated.

func DescriberFor

func DescriberFor(kind string, c *client.Client) (Describer, bool)

Describer returns the default describe functions for each of the standard Kubernetes types.

type HumanReadablePrinter

type HumanReadablePrinter struct {
	// contains filtered or unexported fields
}

HumanReadablePrinter is an implementation of ResourcePrinter which attempts to provide more elegant output. It is not threadsafe, but you may call PrintObj repeatedly; headers will only be printed if the object type changes. This makes it useful for printing items recieved from watches.

func NewHumanReadablePrinter

func NewHumanReadablePrinter(noHeaders bool) *HumanReadablePrinter

NewHumanReadablePrinter creates a HumanReadablePrinter.

func (*HumanReadablePrinter) Handler

func (h *HumanReadablePrinter) Handler(columns []string, printFunc interface{}) error

Handler adds a print handler with a given set of columns to HumanReadablePrinter instance. printFunc is the function that will be called to print an object. It must be of the following type:

func printFunc(object ObjectType, w io.Writer) error

where ObjectType is the type of the object that will be printed.

func (*HumanReadablePrinter) IsVersioned

func (*HumanReadablePrinter) IsVersioned() bool

IsVersioned returns false-- human readable printers do not make versioned output.

func (*HumanReadablePrinter) PrintObj

func (h *HumanReadablePrinter) PrintObj(obj runtime.Object, output io.Writer) error

PrintObj prints the obj in a human-friendly format according to the type of the obj.

type JSONPrinter

type JSONPrinter struct {
	// contains filtered or unexported fields
}

JSONPrinter is an implementation of ResourcePrinter which prints as JSON.

func (*JSONPrinter) IsVersioned

func (*JSONPrinter) IsVersioned() bool

IsVersioned returns true.

func (*JSONPrinter) PrintObj

func (j *JSONPrinter) PrintObj(obj runtime.Object, w io.Writer) error

PrintObj is an implementation of ResourcePrinter.PrintObj which simply writes the object to the Writer.

type MinionDescriber

type MinionDescriber struct {
	client.Interface
}

MinionDescriber generates information about a minion.

func (*MinionDescriber) Describe

func (d *MinionDescriber) Describe(namespace, name string) (string, error)

type NamespaceInfo

type NamespaceInfo struct {
	Namespace string
}

func LoadNamespaceInfo

func LoadNamespaceInfo(path string) (*NamespaceInfo, error)

LoadNamespaceInfo parses a NamespaceInfo object from a file path. It creates a file at the specified path if it doesn't exist with the default namespace.

type PodDescriber

type PodDescriber struct {
	client.Interface
}

PodDescriber generates information about a pod and the replication controllers that create it.

func (*PodDescriber) Describe

func (d *PodDescriber) Describe(namespace, name string) (string, error)

type ProxyServer

type ProxyServer struct {
	httputil.ReverseProxy
	Port int
}

ProxyServer is a http.Handler which proxies Kubernetes APIs to remote API server.

func NewProxyServer

func NewProxyServer(filebase string, cfg *client.Config, port int) (*ProxyServer, error)

NewProxyServer creates and installs a new ProxyServer. It automatically registers the created ProxyServer to http.DefaultServeMux.

func (*ProxyServer) Serve

func (s *ProxyServer) Serve() error

Serve starts the server (http.DefaultServeMux) on TCP port 8001, loops forever.

type RESTClient

type RESTClient interface {
	Get() *client.Request
	Post() *client.Request
	Delete() *client.Request
	Put() *client.Request
}

RESTClient is a client helper for dealing with RESTful resources in a generic way.

type RESTHelper

type RESTHelper struct {
	Resource string
	// A RESTClient capable of mutating this resource
	RESTClient RESTClient
	// A codec for decoding and encoding objects of this resource type.
	Codec runtime.Codec
	// An interface for reading or writing the resource version of this
	// type.
	Versioner runtime.ResourceVersioner
}

RESTHelper provides methods for retrieving or mutating a RESTful resource.

func NewRESTHelper

func NewRESTHelper(client RESTClient, mapping *meta.RESTMapping) *RESTHelper

NewRESTHelper creates a RESTHelper from a ResourceMapping

func (*RESTHelper) Create

func (m *RESTHelper) Create(namespace string, modify bool, data []byte) error

func (*RESTHelper) Delete

func (m *RESTHelper) Delete(namespace, name string) error

func (*RESTHelper) Get

func (m *RESTHelper) Get(namespace, name string, selector labels.Selector) (runtime.Object, error)

func (*RESTHelper) Update

func (m *RESTHelper) Update(namespace, name string, overwrite bool, data []byte) error

func (*RESTHelper) Watch

func (m *RESTHelper) Watch(namespace, resourceVersion string, labelSelector, fieldSelector labels.Selector) (watch.Interface, error)

type ReplicationControllerDescriber

type ReplicationControllerDescriber struct {
	client.Interface
}

ReplicationControllerDescriber generates information about a replication controller and the pods it has created.

func (*ReplicationControllerDescriber) Describe

func (d *ReplicationControllerDescriber) Describe(namespace, name string) (string, error)

type ResourcePrinter

type ResourcePrinter interface {
	// Print receives an arbitrary object, formats it and prints it to a writer.
	PrintObj(runtime.Object, io.Writer) error

	// Returns true if this printer emits properly versioned output.
	IsVersioned() bool
}

ResourcePrinter is an interface that knows how to print API resources.

func GetPrinter

func GetPrinter(version, format, templateFile string, defaultPrinter ResourcePrinter) (ResourcePrinter, error)

GetPrinter returns a resource printer and a bool indicating whether the object must be versioned for the given format.

type ServiceDescriber

type ServiceDescriber struct {
	client.Interface
}

ServiceDescriber generates information about a service.

func (*ServiceDescriber) Describe

func (d *ServiceDescriber) Describe(namespace, name string) (string, error)

type TemplatePrinter

type TemplatePrinter struct {
	// contains filtered or unexported fields
}

TemplatePrinter is an implementation of ResourcePrinter which formats data with a Go Template.

func NewTemplatePrinter

func NewTemplatePrinter(version string, tmpl []byte) (*TemplatePrinter, error)

func (*TemplatePrinter) IsVersioned

func (*TemplatePrinter) IsVersioned() bool

IsVersioned returns true.

func (*TemplatePrinter) PrintObj

func (t *TemplatePrinter) PrintObj(obj runtime.Object, w io.Writer) error

PrintObj formats the obj with the Go Template.

type YAMLPrinter

type YAMLPrinter struct {
	// contains filtered or unexported fields
}

YAMLPrinter is an implementation of ResourcePrinter which prints as YAML.

func (*YAMLPrinter) IsVersioned

func (*YAMLPrinter) IsVersioned() bool

IsVersioned returns true.

func (*YAMLPrinter) PrintObj

func (y *YAMLPrinter) PrintObj(obj runtime.Object, w io.Writer) error

PrintObj prints the data as YAML.

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