request

Documentation

Overview

Package request contains everything around extracting info from a http request object. TODO: this package is temporary. Handlers must move into pkg/apiserver/handlers to avoid dependency cycle

Index

• Variables
• func AuditIDFrom(ctx context.Context) (types.UID, bool)
• func GetAuditIDTruncated(req *http.Request) string
• func NamespaceFrom(ctx context.Context) (string, bool)
• func NamespaceValue(ctx context.Context) string
• func NewContext() context.Context
• func NewDefaultContext() context.Context
• func ReceivedTimestampFrom(ctx context.Context) (time.Time, bool)
• func UserFrom(ctx context.Context) (user.Info, bool)
• func WithAuditID(parent context.Context, auditID types.UID) context.Context
• func WithLatencyTrackers(parent context.Context) context.Context
• func WithLatencyTrackersAndCustomClock(parent context.Context, c clock.Clock) context.Context
• func WithNamespace(parent context.Context, namespace string) context.Context
• func WithReceivedTimestamp(parent context.Context, receivedTimestamp time.Time) context.Context
• func WithRequestInfo(parent context.Context, info *RequestInfo) context.Context
• func WithUser(parent context.Context, user user.Info) context.Context
• func WithValue(parent context.Context, key interface{}, val interface{}) context.Context
• type DurationTracker
• type LatencyTrackers
  • func LatencyTrackersFrom(ctx context.Context) (*LatencyTrackers, bool)
• type LongRunningRequestCheck
• type RequestInfo
  • func RequestInfoFrom(ctx context.Context) (*RequestInfo, bool)
• type RequestInfoFactory
  • func (r *RequestInfoFactory) NewRequestInfo(req *http.Request) (*RequestInfo, error)
• type RequestInfoResolver

Variables

var NamespaceSubResourcesForTest = sets.NewString(namespaceSubresources.List()...)

NamespaceSubResourcesForTest exports namespaceSubresources for testing in pkg/controlplane/master_test.go, so we never drift

Functions

func AuditIDFrom

func AuditIDFrom(ctx context.Context) (types.UID, bool)

AuditIDFrom returns the value of the audit ID from the request context.

func GetAuditIDTruncated

func GetAuditIDTruncated(req *http.Request) string

GetAuditIDTruncated returns the audit ID (truncated) associated with a request. If the length of the Audit-ID value exceeds the limit, we truncate it to keep the first N (maxAuditIDLength) characters. This is intended to be used in logging only.

func NamespaceFrom

func NamespaceFrom(ctx context.Context) (string, bool)

NamespaceFrom returns the value of the namespace key on the ctx

func NamespaceValue

func NamespaceValue(ctx context.Context) string

NamespaceValue returns the value of the namespace key on the ctx, or the empty string if none

func NewContext

func NewContext() context.Context

NewContext instantiates a base context object for request flows.

func NewDefaultContext

func NewDefaultContext() context.Context

NewDefaultContext instantiates a base context object for request flows in the default namespace

func ReceivedTimestampFrom

func ReceivedTimestampFrom(ctx context.Context) (time.Time, bool)

ReceivedTimestampFrom returns the value of the ReceivedTimestamp key from the specified context.

func UserFrom

func UserFrom(ctx context.Context) (user.Info, bool)

UserFrom returns the value of the user key on the ctx

func WithAuditID

func WithAuditID(parent context.Context, auditID types.UID) context.Context

WithAuditID returns a copy of the parent context into which the Audit-ID associated with the request is set.

If the specified auditID is empty, no value is set and the parent context is returned as is.

func WithLatencyTrackers

func WithLatencyTrackers(parent context.Context) context.Context

WithLatencyTrackers returns a copy of parent context to which an instance of LatencyTrackers is added.

func WithLatencyTrackersAndCustomClock

func WithLatencyTrackersAndCustomClock(parent context.Context, c clock.Clock) context.Context

WithLatencyTrackersAndCustomClock returns a copy of parent context to which an instance of LatencyTrackers is added. Tracers use given clock.

func WithNamespace

func WithNamespace(parent context.Context, namespace string) context.Context

WithNamespace returns a copy of parent in which the namespace value is set

func WithReceivedTimestamp

func WithReceivedTimestamp(parent context.Context, receivedTimestamp time.Time) context.Context

WithReceivedTimestamp returns a copy of parent context in which the ReceivedTimestamp (the time the request reached the apiserver) is set.

If the specified ReceivedTimestamp is zero, no value is set and the parent context is returned as is.

func WithRequestInfo

func WithRequestInfo(parent context.Context, info *RequestInfo) context.Context

WithRequestInfo returns a copy of parent in which the request info value is set

func WithUser

func WithUser(parent context.Context, user user.Info) context.Context

WithUser returns a copy of parent in which the user value is set

func WithValue

func WithValue(parent context.Context, key interface{}, val interface{}) context.Context

WithValue returns a copy of parent in which the value associated with key is val.

Types

type DurationTracker

type DurationTracker interface {
	Track(func())
	GetLatency() time.Duration
}

DurationTracker is a simple interface for tracking functions duration

type LatencyTrackers

type LatencyTrackers struct {
	// MutatingWebhookTracker tracks the latency incurred in mutating webhook(s).
	// Since mutating webhooks are done sequentially, latency
	// is aggregated using sum function.
	MutatingWebhookTracker DurationTracker

	// ValidatingWebhookTracker tracks the latency incurred in validating webhook(s).
	// Validate webhooks are done in parallel, so max function is used.
	ValidatingWebhookTracker DurationTracker
}

LatencyTrackers stores trackers used to measure latecny incurred in components within the apiserver.

func LatencyTrackersFrom

func LatencyTrackersFrom(ctx context.Context) (*LatencyTrackers, bool)

LatencyTrackersFrom returns the associated LatencyTrackers instance from the specified context.

type LongRunningRequestCheck

type LongRunningRequestCheck func(r *http.Request, requestInfo *RequestInfo) bool

LongRunningRequestCheck is a predicate which is true for long-running http requests.

type RequestInfo

type RequestInfo struct {
	// IsResourceRequest indicates whether or not the request is for an API resource or subresource
	IsResourceRequest bool
	// Path is the URL path of the request
	Path string
	// Verb is the kube verb associated with the request for API requests, not the http verb.  This includes things like list and watch.
	// for non-resource requests, this is the lowercase http verb
	Verb string

	APIPrefix  string
	APIGroup   string
	APIVersion string
	Namespace  string
	// Resource is the name of the resource being requested.  This is not the kind.  For example: pods
	Resource string
	// Subresource is the name of the subresource being requested.  This is a different resource, scoped to the parent resource, but it may have a different kind.
	// For instance, /pods has the resource "pods" and the kind "Pod", while /pods/foo/status has the resource "pods", the sub resource "status", and the kind "Pod"
	// (because status operates on pods). The binding resource for a pod though may be /pods/foo/binding, which has resource "pods", subresource "binding", and kind "Binding".
	Subresource string
	// Name is empty for some verbs, but if the request directly indicates a name (not in body content) then this field is filled in.
	Name string
	// Parts are the path parts for the request, always starting with /{resource}/{name}
	Parts []string
}

RequestInfo holds information parsed from the http.Request

func RequestInfoFrom

func RequestInfoFrom(ctx context.Context) (*RequestInfo, bool)

RequestInfoFrom returns the value of the RequestInfo key on the ctx

type RequestInfoFactory

type RequestInfoFactory struct {
	APIPrefixes          sets.String // without leading and trailing slashes
	GrouplessAPIPrefixes sets.String // without leading and trailing slashes
}

func (*RequestInfoFactory) NewRequestInfo

func (r *RequestInfoFactory) NewRequestInfo(req *http.Request) (*RequestInfo, error)

TODO write an integration test against the swagger doc to test the RequestInfo and match up behavior to responses NewRequestInfo returns the information from the http request. If error is not nil, RequestInfo holds the information as best it is known before the failure It handles both resource and non-resource requests and fills in all the pertinent information for each. Valid Inputs: Resource paths /apis/{api-group}/{version}/namespaces /api/{version}/namespaces /api/{version}/namespaces/{namespace} /api/{version}/namespaces/{namespace}/{resource} /api/{version}/namespaces/{namespace}/{resource}/{resourceName} /api/{version}/{resource} /api/{version}/{resource}/{resourceName}

Special verbs without subresources: /api/{version}/proxy/{resource}/{resourceName} /api/{version}/proxy/namespaces/{namespace}/{resource}/{resourceName}

Special verbs with subresources: /api/{version}/watch/{resource} /api/{version}/watch/namespaces/{namespace}/{resource}

NonResource paths /apis/{api-group}/{version} /apis/{api-group} /apis /api/{version} /api /healthz /

type RequestInfoResolver

type RequestInfoResolver interface {
	NewRequestInfo(req *http.Request) (*RequestInfo, error)
}