kubectl

package
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 Go to latest Published: Oct 31, 2015 License: Apache-2.0 Imports: 52 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

View Source 
const (
	DefaultHostAcceptRE   = "^localhost$,^127\\.0\\.0\\.1$,^\\[::1\\]$"
	DefaultPathAcceptRE   = "^/.*"
	DefaultPathRejectRE   = "^/api/.*/exec,^/api/.*/run,^/api/.*/attach"
	DefaultMethodRejectRE = "POST,PUT,PATCH"
)
View Source 
const (
	Interval = time.Second * 1
	Timeout  = time.Minute * 5
)
View Source 
const LastAppliedConfigAnnotation = kubectlAnnotationPrefix + "last-applied-configuration"

LastAppliedConfigAnnotation is the annotation used to store the previous configuration of a resource for use in a three way diff by UpdateApplyAnnotation.

View Source 
const MaxRetries = 3

Variables

View Source 
var (
	// The reverse proxy will periodically flush the io writer at this frequency.
	// Only matters for long poll connections like the one used to watch. With an
	// interval of 0 the reverse proxy will buffer content sent on any connection
	// with transfer-encoding=chunked.
	// TODO: Flush after each chunk so the client doesn't suffer a 100ms latency per
	// watch event.
	ReverseProxyFlushInterval = 100 * time.Millisecond
)

Functions

func AbortRollingUpdate 

func AbortRollingUpdate(c *RollingUpdaterConfig) error

func AddDeploymentKeyToReplicationController 

func AddDeploymentKeyToReplicationController(oldRc *api.ReplicationController, client client.Interface, deploymentKey, deploymentValue, namespace string, out io.Writer) (*api.ReplicationController, error)

func AddJsonFilenameFlag 

func AddJsonFilenameFlag(cmd *cobra.Command, value *[]string, usage string)

func CreateNewControllerFromCurrentController 

func CreateNewControllerFromCurrentController(c *client.Client, namespace, oldName, newName, image, deploymentKey string) (*api.ReplicationController, error)

func DescribableResources 

func DescribableResources() []string

List of all resource types we can describe

func DescribeEvents 

func DescribeEvents(el *api.EventList, w io.Writer)

func DescribeLimitRanges 

func DescribeLimitRanges(limitRanges *api.LimitRangeList, w io.Writer)

DescribeLimitRanges merges a set of limit range items into a single tabular description

func DescribeResourceQuotas 

func DescribeResourceQuotas(quotas *api.ResourceQuotaList, w io.Writer)

DescribeResourceQuotas merges a set of quota items into a single tabular description of all quotas

func FindSourceController 

func FindSourceController(r client.ReplicationControllersNamespacer, namespace, name string) (*api.ReplicationController, error)

func GetBool 

func GetBool(params map[string]string, key string, defValue bool) (bool, error)

func GetClientVersion 

func GetClientVersion(w io.Writer)

func GetModifiedConfiguration 

func GetModifiedConfiguration(info *resource.Info, annotate bool) ([]byte, error)

GetModifiedConfiguration retrieves the modified configuration of the object. If annotate is true, it embeds the result as an anotation in the modified configuration. If an object was read from the command input, it will use that version of the object. Otherwise, it will use the version from the server.

func GetNewTabWriter 

func GetNewTabWriter(output io.Writer) *tabwriter.Writer

GetNewTabWriter returns a tabwriter that translates tabbed columns in input into properly aligned text.

func GetNextControllerAnnotation 

func GetNextControllerAnnotation(rc *api.ReplicationController) (string, bool)

func GetOriginalConfiguration 

func GetOriginalConfiguration(info *resource.Info) ([]byte, error)

GetOriginalConfiguration retrieves the original configuration of the object from the annotation, or nil if no annotation was found.

func GetServerVersion 

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

func GetSwaggerSchema 

func GetSwaggerSchema(apiVer string, kubeClient client.Interface) (*swagger.ApiDeclaration, error)

GetSwaggerSchema returns the swagger spec from master

func HandleResourceRequirements 

func HandleResourceRequirements(params map[string]string) (api.ResourceRequirements, error)

HandleResourceRequirements parses the limits and requests parameters if specified

func IsNoSuchReaperError 

func IsNoSuchReaperError(err error) bool

func IsZero 

func IsZero(i interface{}) bool

func LoadExistingNextReplicationController 

func LoadExistingNextReplicationController(c client.ReplicationControllersNamespacer, namespace, newName string) (*api.ReplicationController, error)

func MakeLabels 

func MakeLabels(labels map[string]string) string

func MakeParams 

func MakeParams(cmd *cobra.Command, params []GeneratorParam) map[string]interface{}

MakeParams is a utility that creates generator parameters from a command line

func MakeRegexpArray 

func MakeRegexpArray(str string) ([]*regexp.Regexp, error)

Splits a comma separated list of regexps into a array of Regexp objects.

func MakeRegexpArrayOrDie 

func MakeRegexpArrayOrDie(str string) []*regexp.Regexp

func ParseLabels 

func ParseLabels(labelSpec interface{}) (map[string]string, error)

ParseLabels turns a string representation of a label set into a map[string]string

func PrintModelDescription 

func PrintModelDescription(inModel string, fieldsPath []string, w io.Writer, swaggerSchema *swagger.ApiDeclaration, r bool) error

PrintModelDescription prints the description of a specific model or dot path

func Rename 

func Rename(c client.ReplicationControllersNamespacer, rc *api.ReplicationController, newName string) error

func ScaleCondition 

func ScaleCondition(r Scaler, precondition *ScalePrecondition, namespace, name string, count uint) wait.ConditionFunc

ScaleCondition is a closure around Scale that facilitates retries via util.wait

func SetNextControllerAnnotation 

func SetNextControllerAnnotation(rc *api.ReplicationController, name string)

func SetOriginalConfiguration 

func SetOriginalConfiguration(info *resource.Info, original []byte) error

SetOriginalConfiguration sets the original configuration of the object as the annotation on the object for later use in computing a three way patch.

func SplitAndParseResourceRequest 

func SplitAndParseResourceRequest(inResource string, mapper meta.RESTMapper) (string, []string, error)

SplitAndParseResourceRequest separates the users input into a model and fields

func UpdateApplyAnnotation 

func UpdateApplyAnnotation(info *resource.Info) error

If the last applied configuration annotation is already present, then UpdateApplyAnnotation gets the modified configuration of the object, without embedding it again, and then sets it on the object as the annotation. Otherwise, it does nothing.

func UpdateExistingReplicationController 

func UpdateExistingReplicationController(c client.Interface, oldRc *api.ReplicationController, namespace, newName, deploymentKey, deploymentValue string, out io.Writer) (*api.ReplicationController, error)

func ValidateParams 

func ValidateParams(paramSpec []GeneratorParam, params map[string]interface{}) error

ValidateParams ensures that all required params are present in the params map

func WatchLoop 

func WatchLoop(w watch.Interface, fn func(watch.Event) error)

WatchLoop loops, passing events in w to fn. If user sends interrupt signal, shut down cleanly. Otherwise, never return.

Types

type BasicPod 

type BasicPod struct{}

func (BasicPod) Generate 

func (BasicPod) Generate(genericParams map[string]interface{}) (runtime.Object, error)

func (BasicPod) ParamNames 

func (BasicPod) ParamNames() []GeneratorParam

type BasicReplicationController 

type BasicReplicationController struct{}

func (BasicReplicationController) Generate 

func (BasicReplicationController) Generate(genericParams map[string]interface{}) (runtime.Object, error)

func (BasicReplicationController) ParamNames 

func (BasicReplicationController) ParamNames() []GeneratorParam

type Column 

type Column struct {
	// The header to print above the column, general style is ALL_CAPS
	Header string
	// The pointer to the field in the object to print in JSONPath form
	// e.g. {.ObjectMeta.Name}, see pkg/util/jsonpath for more details.
	FieldSpec string
}

Column represents a user specified column

type ControllerScaleError 

type ControllerScaleError struct {
	FailureType     ControllerScaleErrorType
	ResourceVersion string
	ActualError     error
}

A ControllerScaleError is returned when a scale request passes preconditions but fails to actually scale the controller.

func (ControllerScaleError) Error 

func (c ControllerScaleError) Error() string

type ControllerScaleErrorType 

type ControllerScaleErrorType int
const (
	ControllerScaleGetFailure ControllerScaleErrorType = iota
	ControllerScaleUpdateFailure
	ControllerScaleUpdateInvalidFailure
)

type CustomColumnsPrinter 

type CustomColumnsPrinter struct {
	Columns []Column
}

CustomColumnPrinter is a printer that knows how to print arbitrary columns of data from templates specified in the `Columns` array

func NewCustomColumnsPrinterFromSpec 

func NewCustomColumnsPrinterFromSpec(spec string) (*CustomColumnsPrinter, error)

NewCustomColumnsPrinterFromSpec creates a custom columns printer from a comma separated list of <header>:<jsonpath-field-spec> pairs. e.g. NAME:metadata.name,API_VERSION:apiVersion creates a printer that prints: 

NAME               API_VERSION
foo                bar

func NewCustomColumnsPrinterFromTemplate 

func NewCustomColumnsPrinterFromTemplate(templateReader io.Reader) (*CustomColumnsPrinter, error)

NewCustomColumnsPrinterFromTemplate creates a custom columns printer from a template stream. The template is expected to consist of two lines, whitespace separated. The first line is the header line, the second line is the jsonpath field spec For example the template below: NAME API_VERSION {metadata.name} {apiVersion}

func (*CustomColumnsPrinter) HandledResources 

func (s *CustomColumnsPrinter) HandledResources() []string

func (*CustomColumnsPrinter) PrintObj 

func (s *CustomColumnsPrinter) PrintObj(obj runtime.Object, out io.Writer) error

type DaemonSetDescriber 

type DaemonSetDescriber struct {
	client.Interface
}

DaemonSetDescriber generates information about a daemon set and the pods it has created.

func (*DaemonSetDescriber) Describe 

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

type DaemonSetReaper 

type DaemonSetReaper struct {
	client.Interface
	// contains filtered or unexported fields
}

func (*DaemonSetReaper) Stop 

func (reaper *DaemonSetReaper) Stop(namespace, name string, timeout time.Duration, gracePeriod *api.DeleteOptions) (string, error)

type DeploymentDescriber 

type DeploymentDescriber struct {
	client.Interface
}

DeploymentDescriber generates information about a deployment.

func (*DeploymentDescriber) Describe 

func (dd *DeploymentDescriber) Describe(namespace, name string) (string, error)

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. Implementors typically abstract the retrieval of the named object from a remote server.

func DescriberFor 

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

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

type Describers 

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

Describers implements ObjectDescriber against functions registered via Add. Those functions can be strongly typed. Types are exactly matched (no conversion or assignable checks).

func (*Describers) Add 

func (d *Describers) Add(fns ...interface{}) error

Add adds one or more describer functions to the Describer. The passed function must match the signature: 

func(...) (string, error)

Any number of arguments may be provided.

func (*Describers) DescribeObject 

func (d *Describers) DescribeObject(exact interface{}, extra ...interface{}) (string, error)

DescribeObject implements ObjectDescriber and will attempt to print the provided object to a string, if at least one describer function has been registered with the exact types passed, or if any describer can print the exact object in its first argument (the remainder will be provided empty values). If no function registered with Add can satisfy the passed objects, an ErrNoDescriber will be returned TODO: reorder and partial match extra.

type ErrNoDescriber 

type ErrNoDescriber struct {
	Types []string
}

ErrNoDescriber is a structured error indicating the provided object or objects cannot be described.

func (ErrNoDescriber) Error 

func (e ErrNoDescriber) Error() string

Error implements the error interface.

type FilterServer 

type FilterServer struct {
	// Only paths that match this regexp will be accepted
	AcceptPaths []*regexp.Regexp
	// Paths that match this regexp will be rejected, even if they match the above
	RejectPaths []*regexp.Regexp
	// Hosts are required to match this list of regexp
	AcceptHosts []*regexp.Regexp
	// Methods that match this regexp are rejected
	RejectMethods []*regexp.Regexp
	// contains filtered or unexported fields
}

FilterServer rejects requests which don't match one of the specified regular expressions

func (*FilterServer) HandlerFor 

func (f *FilterServer) HandlerFor(delegate http.Handler) *FilterServer

Make a copy of f which passes requests along to the new delegate.

func (*FilterServer) ServeHTTP 

func (f *FilterServer) ServeHTTP(rw http.ResponseWriter, req *http.Request)

type Generator 

type Generator interface {
	// Generate creates an API object given a set of parameters
	Generate(params map[string]interface{}) (runtime.Object, error)
	// ParamNames returns the list of parameters that this generator uses
	ParamNames() []GeneratorParam
}

Generator is an interface for things that can generate API objects from input parameters.

type GeneratorParam 

type GeneratorParam struct {
	Name     string
	Required bool
}

GeneratorParam is a parameter for a generator TODO: facilitate structured json generator input schemes

type HorizontalPodAutoscalerDescriber 

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

HorizontalPodAutoscalerDescriber generates information about a horizontal pod autoscaler.

func (*HorizontalPodAutoscalerDescriber) Describe 

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

type HorizontalPodAutoscalerV1Beta1 

type HorizontalPodAutoscalerV1Beta1 struct{}

func (HorizontalPodAutoscalerV1Beta1) Generate 

func (HorizontalPodAutoscalerV1Beta1) Generate(genericParams map[string]interface{}) (runtime.Object, error)

func (HorizontalPodAutoscalerV1Beta1) ParamNames 

func (HorizontalPodAutoscalerV1Beta1) ParamNames() []GeneratorParam

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 received from watches.

func NewHumanReadablePrinter 

func NewHumanReadablePrinter(noHeaders, withNamespace bool, wide bool, showAll bool, columnLabels []string) *HumanReadablePrinter

NewHumanReadablePrinter creates a HumanReadablePrinter.

func (*HumanReadablePrinter) HandledResources 

func (h *HumanReadablePrinter) HandledResources() []string

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. See validatePrintHandlerFunc for required method signature.

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 IngressDescriber 

type IngressDescriber struct {
	client.Interface
}

func (*IngressDescriber) Describe 

func (i *IngressDescriber) Describe(namespace, name string) (string, error)

type JSONPathPrinter 

type JSONPathPrinter struct {
	*jsonpath.JSONPath
	// contains filtered or unexported fields
}

JSONPathPrinter is an implementation of ResourcePrinter which formats data with jsonpath expression.

func NewJSONPathPrinter 

func NewJSONPathPrinter(tmpl string) (*JSONPathPrinter, error)

func (*JSONPathPrinter) HandledResources 

func (p *JSONPathPrinter) HandledResources() []string

TODO: implement HandledResources()

func (*JSONPathPrinter) PrintObj 

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

PrintObj formats the obj with the JSONPath Template.

type JSONPrinter 

type JSONPrinter struct {
}

JSONPrinter is an implementation of ResourcePrinter which outputs an object as JSON.

func (*JSONPrinter) HandledResources 

func (p *JSONPrinter) HandledResources() []string

TODO: implement HandledResources()

func (*JSONPrinter) PrintObj 

func (p *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 JobDescriber 

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

JobDescriber generates information about a job and the pods it has created.

func (*JobDescriber) Describe 

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

type JobReaper 

type JobReaper struct {
	client.Interface
	// contains filtered or unexported fields
}

func (*JobReaper) Stop 

func (reaper *JobReaper) Stop(namespace, name string, timeout time.Duration, gracePeriod *api.DeleteOptions) (string, error)

type JobScaler 

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

func (*JobScaler) Scale 

func (scaler *JobScaler) Scale(namespace, name string, newSize uint, preconditions *ScalePrecondition, retry, waitForReplicas *RetryParams) error

Scale updates a Job to a new size, with optional precondition check (if preconditions is not nil), optional retries (if retry is not nil), and then optionally waits for parallelism to reach desired number, which can be less than requested based on job's current progress.

func (*JobScaler) ScaleSimple 

func (scaler *JobScaler) ScaleSimple(namespace, name string, preconditions *ScalePrecondition, newSize uint) error

ScaleSimple is responsible for updating job's parallelism.

type LimitRangeDescriber 

type LimitRangeDescriber struct {
	client.Interface
}

LimitRangeDescriber generates information about a limit range

func (*LimitRangeDescriber) Describe 

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

type NamePrinter 

type NamePrinter struct {
}

NamePrinter is an implementation of ResourcePrinter which outputs "resource/name" pair of an object.

func (*NamePrinter) HandledResources 

func (p *NamePrinter) HandledResources() []string

TODO: implement HandledResources()

func (*NamePrinter) PrintObj 

func (p *NamePrinter) PrintObj(obj runtime.Object, w io.Writer) error

PrintObj is an implementation of ResourcePrinter.PrintObj which decodes the object and print "resource/name" pair. If the object is a List, print all items in it.

type NamespaceDescriber 

type NamespaceDescriber struct {
	client.Interface
}

NamespaceDescriber generates information about a namespace

func (*NamespaceDescriber) Describe 

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

type NamespaceInfo 

type NamespaceInfo struct {
	Namespace string
}

type NoSuchReaperError 

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

func (*NoSuchReaperError) Error 

func (n *NoSuchReaperError) Error() string

type NodeDescriber 

type NodeDescriber struct {
	client.Interface
}

NodeDescriber generates information about a node.

func (*NodeDescriber) Describe 

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

type ObjectDescriber 

type ObjectDescriber interface {
	DescribeObject(object interface{}, extra ...interface{}) (output string, err error)
}

ObjectDescriber is an interface for displaying arbitrary objects with extra information. Use when an object is in hand (on disk, or already retrieved). Implementors may ignore the additional information passed on extra, or use it by default. ObjectDescribers may return ErrNoDescriber if no suitable describer is found. 

var DefaultObjectDescriber ObjectDescriber

DefaultObjectDescriber can describe the default Kubernetes objects.

type OutputVersionMapper 

type OutputVersionMapper struct {
	meta.RESTMapper
	OutputVersion string
}

OutputVersionMapper is a RESTMapper that will prefer mappings that correspond to a preferred output version (if feasible)

func (OutputVersionMapper) RESTMapping 

func (m OutputVersionMapper) RESTMapping(kind string, versions ...string) (*meta.RESTMapping, error)

RESTMapping implements meta.RESTMapper by prepending the output version to the preferred version list.

type PersistentVolumeClaimDescriber 

type PersistentVolumeClaimDescriber struct {
	client.Interface
}

func (*PersistentVolumeClaimDescriber) Describe 

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

type PersistentVolumeDescriber 

type PersistentVolumeDescriber struct {
	client.Interface
}

func (*PersistentVolumeDescriber) Describe 

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

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 PodReaper 

type PodReaper struct {
	client.Interface
}

func (*PodReaper) Stop 

func (reaper *PodReaper) Stop(namespace, name string, timeout time.Duration, gracePeriod *api.DeleteOptions) (string, error)

type PreconditionError 

type PreconditionError struct {
	Precondition  string
	ExpectedValue string
	ActualValue   string
}

A PreconditionError is returned when a replication controller fails to match the scale preconditions passed to kubectl.

func (PreconditionError) Error 

func (pe PreconditionError) Error() string

type ProxyServer 

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

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

func NewProxyServer 

func NewProxyServer(filebase string, apiProxyPrefix string, staticPrefix string, filter *FilterServer, cfg *client.Config) (*ProxyServer, error)

NewProxyServer creates and installs a new ProxyServer. It automatically registers the created ProxyServer to http.DefaultServeMux. 'filter', if non-nil, protects requests to the api only.

func (*ProxyServer) Listen 

func (s *ProxyServer) Listen(address string, port int) (net.Listener, error)

Listen is a simple wrapper around net.Listen.

func (*ProxyServer) ListenUnix 

func (s *ProxyServer) ListenUnix(path string) (net.Listener, error)

ListenUnix does net.Listen for a unix socket

func (*ProxyServer) ServeOnListener 

func (s *ProxyServer) ServeOnListener(l net.Listener) error

Serve starts the server using given listener, loops forever.

type RESTClient 

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

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

type Reaper 

type Reaper interface {
	Stop(namespace, name string, timeout time.Duration, gracePeriod *api.DeleteOptions) (string, error)
}

A Reaper handles terminating an object as gracefully as possible. timeout is how long we'll wait for the termination to be successful gracePeriod is time given to an API object for it to delete itself cleanly (e.g. pod shutdown)

func ReaperFor 

func ReaperFor(kind string, c client.Interface) (Reaper, error)

func ReaperForReplicationController 

func ReaperForReplicationController(c client.Interface, timeout time.Duration) (Reaper, 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 ReplicationControllerReaper 

type ReplicationControllerReaper struct {
	client.Interface
	// contains filtered or unexported fields
}

func (*ReplicationControllerReaper) Stop 

func (reaper *ReplicationControllerReaper) Stop(namespace, name string, timeout time.Duration, gracePeriod *api.DeleteOptions) (string, error)

type ReplicationControllerScaler 

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

func (*ReplicationControllerScaler) Scale 

func (scaler *ReplicationControllerScaler) Scale(namespace, name string, newSize uint, preconditions *ScalePrecondition, retry, waitForReplicas *RetryParams) error

Scale updates a ReplicationController to a new size, with optional precondition check (if preconditions is not nil), optional retries (if retry is not nil), and then optionally waits for it's replica count to reach the new value (if wait is not nil).

func (*ReplicationControllerScaler) ScaleSimple 

func (scaler *ReplicationControllerScaler) ScaleSimple(namespace, name string, preconditions *ScalePrecondition, newSize uint) error

type ResourcePrinter 

type ResourcePrinter interface {
	// Print receives a runtime object, formats it and prints it to a writer.
	PrintObj(runtime.Object, io.Writer) error
	HandledResources() []string
}

ResourcePrinter is an interface that knows how to print runtime objects.

func GetPrinter 

func GetPrinter(format, formatArgument string) (ResourcePrinter, bool, error)

GetPrinter takes a format type, an optional format argument. It will return true if the format is generic (untyped), otherwise it will return false. The printer is agnostic to schema versions, so you must send arguments to PrintObj in the version you wish them to be shown using a VersionedPrinter (typically when generic is true).

func NewVersionedPrinter 

func NewVersionedPrinter(printer ResourcePrinter, convertor runtime.ObjectConvertor, version ...string) ResourcePrinter

NewVersionedPrinter wraps a printer to convert objects to a known API version prior to printing.

type ResourcePrinterFunc 

type ResourcePrinterFunc func(runtime.Object, io.Writer) error

ResourcePrinterFunc is a function that can print objects

func (ResourcePrinterFunc) HandledResources 

func (fn ResourcePrinterFunc) HandledResources() []string

TODO: implement HandledResources()

func (ResourcePrinterFunc) PrintObj 

func (fn ResourcePrinterFunc) PrintObj(obj runtime.Object, w io.Writer) error

PrintObj implements ResourcePrinter

type ResourceQuotaDescriber 

type ResourceQuotaDescriber struct {
	client.Interface
}

ResourceQuotaDescriber generates information about a resource quota

func (*ResourceQuotaDescriber) Describe 

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

type RetryParams 

type RetryParams struct {
	Interval, Timeout time.Duration
}

RetryParams encapsulates the retry parameters used by kubectl's scaler.

func NewRetryParams 

func NewRetryParams(interval, timeout time.Duration) *RetryParams

type RollingUpdater 

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

RollingUpdater provides methods for updating replicated pods in a predictable, fault-tolerant way.

func NewRollingUpdater 

func NewRollingUpdater(namespace string, client client.Interface) *RollingUpdater

NewRollingUpdater creates a RollingUpdater from a client.

func (*RollingUpdater) Update 

func (r *RollingUpdater) Update(config *RollingUpdaterConfig) error

Update all pods for a ReplicationController (oldRc) by creating a new controller (newRc) with 0 replicas, and synchronously scaling oldRc and newRc until oldRc has 0 replicas and newRc has the original # of desired replicas. Cleanup occurs based on a RollingUpdaterCleanupPolicy.

Each interval, the updater will attempt to make progress however it can without violating any availability constraints defined by the config. This means the amount scaled up or down each interval will vary based on the timeliness of readiness and the updater will always try to make progress, even slowly.

If an update from newRc to oldRc is already in progress, we attempt to drive it to completion. If an error occurs at any step of the update, the error will be returned.

A scaling event (either up or down) is considered progress; if no progress is made within the config.Timeout, an error is returned.

TODO: make this handle performing a rollback of a partially completed rollout.

type RollingUpdaterCleanupPolicy 

type RollingUpdaterCleanupPolicy string

RollingUpdaterCleanupPolicy is a cleanup action to take after the deployment is complete. 

const (
	// DeleteRollingUpdateCleanupPolicy means delete the old controller.
	DeleteRollingUpdateCleanupPolicy RollingUpdaterCleanupPolicy = "Delete"
	// PreserveRollingUpdateCleanupPolicy means keep the old controller.
	PreserveRollingUpdateCleanupPolicy RollingUpdaterCleanupPolicy = "Preserve"
	// RenameRollingUpdateCleanupPolicy means delete the old controller, and rename
	// the new controller to the name of the old controller.
	RenameRollingUpdateCleanupPolicy RollingUpdaterCleanupPolicy = "Rename"
)

type RollingUpdaterConfig 

type RollingUpdaterConfig struct {
	// Out is a writer for progress output.
	Out io.Writer
	// OldRC is an existing controller to be replaced.
	OldRc *api.ReplicationController
	// NewRc is a controller that will take ownership of updated pods (will be
	// created if needed).
	NewRc *api.ReplicationController
	// UpdatePeriod is the time to wait between individual pod updates.
	UpdatePeriod time.Duration
	// Interval is the time to wait between polling controller status after
	// update.
	Interval time.Duration
	// Timeout is the time to wait for controller updates before giving up.
	Timeout time.Duration
	// CleanupPolicy defines the cleanup action to take after the deployment is
	// complete.
	CleanupPolicy RollingUpdaterCleanupPolicy
	// MaxUnavailable is the maximum number of pods that can be unavailable during the update.
	// Value can be an absolute number (ex: 5) or a percentage of desired pods (ex: 10%).
	// Absolute number is calculated from percentage by rounding up.
	// This can not be 0 if MaxSurge is 0.
	// By default, a fixed value of 1 is used.
	// Example: when this is set to 30%, the old RC can be scaled down to 70% of desired pods
	// immediately when the rolling update starts. Once new pods are ready, old RC
	// can be scaled down further, followed by scaling up the new RC, ensuring
	// that the total number of pods available at all times during the update is at
	// least 70% of desired pods.
	MaxUnavailable util.IntOrString
	// MaxSurge is the maximum number of pods that can be scheduled above the desired number of pods.
	// Value can be an absolute number (ex: 5) or a percentage of desired pods (ex: 10%).
	// This can not be 0 if MaxUnavailable is 0.
	// Absolute number is calculated from percentage by rounding up.
	// By default, a value of 1 is used.
	// Example: when this is set to 30%, the new RC can be scaled up immediately
	// when the rolling update starts, such that the total number of old and new pods do not exceed
	// 130% of desired pods. Once old pods have been killed, new RC can be scaled up
	// further, ensuring that total number of pods running at any time during
	// the update is atmost 130% of desired pods.
	MaxSurge util.IntOrString
}

RollingUpdaterConfig is the configuration for a rolling deployment process.

type RuntimeSort 

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

RuntimeSort is an implementation of the golang sort interface that knows how to sort lists of runtime.Object

func (*RuntimeSort) Len 

func (r *RuntimeSort) Len() int

func (*RuntimeSort) Less 

func (r *RuntimeSort) Less(i, j int) bool

func (*RuntimeSort) Swap 

func (r *RuntimeSort) Swap(i, j int)

type ScalePrecondition 

type ScalePrecondition struct {
	Size            int
	ResourceVersion string
}

ScalePrecondition describes a condition that must be true for the scale to take place If CurrentSize == -1, it is ignored. If CurrentResourceVersion is the empty string, it is ignored. Otherwise they must equal the values in the replication controller for it to be valid.

func (*ScalePrecondition) ValidateJob 

func (precondition *ScalePrecondition) ValidateJob(job *extensions.Job) error

ValidateJob ensures that the preconditions match. Returns nil if they are valid, an error otherwise

func (*ScalePrecondition) ValidateReplicationController 

func (precondition *ScalePrecondition) ValidateReplicationController(controller *api.ReplicationController) error

ValidateReplicationController ensures that the preconditions match. Returns nil if they are valid, an error otherwise

type Scaler 

type Scaler interface {
	// Scale scales the named resource after checking preconditions. It optionally
	// retries in the event of resource version mismatch (if retry is not nil),
	// and optionally waits until the status of the resource matches newSize (if wait is not nil)
	Scale(namespace, name string, newSize uint, preconditions *ScalePrecondition, retry, wait *RetryParams) error
	// ScaleSimple does a simple one-shot attempt at scaling - not useful on it's own, but
	// a necessary building block for Scale
	ScaleSimple(namespace, name string, preconditions *ScalePrecondition, newSize uint) error
}

func ScalerFor 

func ScalerFor(kind string, c client.Interface) (Scaler, error)

type SecretDescriber 

type SecretDescriber struct {
	client.Interface
}

SecretDescriber generates information about a secret

func (*SecretDescriber) Describe 

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

type ServiceAccountDescriber 

type ServiceAccountDescriber struct {
	client.Interface
}

ServiceAccountDescriber generates information about a service.

func (*ServiceAccountDescriber) Describe 

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

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 ServiceGeneratorV1 

type ServiceGeneratorV1 struct{}

The only difference between ServiceGeneratorV1 and V2 is that the service port is named "default" in V1, while it is left unnamed in V2.

func (ServiceGeneratorV1) Generate 

func (ServiceGeneratorV1) Generate(params map[string]interface{}) (runtime.Object, error)

func (ServiceGeneratorV1) ParamNames 

func (ServiceGeneratorV1) ParamNames() []GeneratorParam

type ServiceGeneratorV2 

type ServiceGeneratorV2 struct{}

func (ServiceGeneratorV2) Generate 

func (ServiceGeneratorV2) Generate(params map[string]interface{}) (runtime.Object, error)

func (ServiceGeneratorV2) ParamNames 

func (ServiceGeneratorV2) ParamNames() []GeneratorParam

type ServiceReaper 

type ServiceReaper struct {
	client.Interface
}

func (*ServiceReaper) Stop 

func (reaper *ServiceReaper) Stop(namespace, name string, timeout time.Duration, gracePeriod *api.DeleteOptions) (string, error)

type ShortcutExpander 

type ShortcutExpander struct {
	meta.RESTMapper
}

ShortcutExpander is a RESTMapper that can be used for Kubernetes resources.

func (ShortcutExpander) ResourceIsValid 

func (e ShortcutExpander) ResourceIsValid(resource string) bool

ResourceIsValid takes a string (kind) and checks if it's a valid resource. It expands the resource first, then invokes the wrapped mapper.

func (ShortcutExpander) VersionAndKindForResource 

func (e ShortcutExpander) VersionAndKindForResource(resource string) (defaultVersion, kind string, err error)

VersionAndKindForResource implements meta.RESTMapper. It expands the resource first, then invokes the wrapped mapper.

type SortableEvents 

type SortableEvents []api.Event

SortableEvents implements sort.Interface for []api.Event based on the Timestamp field

func (SortableEvents) Len 

func (list SortableEvents) Len() int

func (SortableEvents) Less 

func (list SortableEvents) Less(i, j int) bool

func (SortableEvents) Swap 

func (list SortableEvents) Swap(i, j int)

type SortableResourceNames 

type SortableResourceNames []api.ResourceName

func (SortableResourceNames) Len 

func (list SortableResourceNames) Len() int

func (SortableResourceNames) Less 

func (list SortableResourceNames) Less(i, j int) bool

func (SortableResourceNames) Swap 

func (list SortableResourceNames) Swap(i, j int)

type SortingPrinter 

type SortingPrinter struct {
	SortField string
	Delegate  ResourcePrinter
}

Sorting printer sorts list types before delegating to another printer. Non-list types are simply passed through

func (*SortingPrinter) HandledResources 

func (p *SortingPrinter) HandledResources() []string

TODO: implement HandledResources()

func (*SortingPrinter) PrintObj 

func (s *SortingPrinter) PrintObj(obj runtime.Object, out io.Writer) 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(tmpl []byte) (*TemplatePrinter, error)

func (*TemplatePrinter) HandledResources 

func (p *TemplatePrinter) HandledResources() []string

TODO: implement HandledResources()

func (*TemplatePrinter) PrintObj 

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

PrintObj formats the obj with the Go Template.

type VersionedPrinter 

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

VersionedPrinter takes runtime objects and ensures they are converted to a given API version prior to being passed to a nested printer.

func (*VersionedPrinter) HandledResources 

func (p *VersionedPrinter) HandledResources() []string

TODO: implement HandledResources()

func (*VersionedPrinter) PrintObj 

func (p *VersionedPrinter) PrintObj(obj runtime.Object, w io.Writer) error

PrintObj implements ResourcePrinter

type YAMLPrinter 

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

YAMLPrinter is an implementation of ResourcePrinter which outputs an object as YAML. The input object is assumed to be in the internal version of an API and is converted to the given version first.

func (*YAMLPrinter) HandledResources 

func (p *YAMLPrinter) HandledResources() []string

TODO: implement HandledResources()

func (*YAMLPrinter) PrintObj 

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

PrintObj prints the data as YAML.

Source Files

View all Source files

Directories

Path Synopsis
cmd
config
util
util/editor
util/jsonmerge
Package resource assists clients in dealing with RESTful objects that match the Kubernetes API conventions.
 Package resource assists clients in dealing with RESTful objects that match the Kubernetes API conventions.

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