controller

Documentation

Overview

Package controller contains the router controller.

Index

• Variables
• func HostForRoute(route *routeapi.Route) string
• type HostToRouteMap
• type NamespaceLister
• type RejectionRecorder
• type RouteHostFunc
• type RouteToHostMap
• type RouterController
  • func (c *RouterController) HandleEndpoints()
  • func (c *RouterController) HandleNamespaces()
  • func (c *RouterController) HandleRoute()
  • func (c *RouterController) Run()
• type StatusAdmitter
  • func NewStatusAdmitter(plugin router.Plugin, client client.RoutesNamespacer, name string) *StatusAdmitter
  • func (a *StatusAdmitter) HandleEndpoints(eventType watch.EventType, route *kapi.Endpoints) error
  • func (a *StatusAdmitter) HandleNamespaces(namespaces sets.String) error
  • func (a *StatusAdmitter) HandleRoute(eventType watch.EventType, route *routeapi.Route) error
  • func (a *StatusAdmitter) RecordRouteRejection(route *routeapi.Route, reason, message string)
• type UniqueHost
  • func NewUniqueHost(plugin router.Plugin, fn RouteHostFunc, recorder RejectionRecorder) *UniqueHost
  • func (p *UniqueHost) HandleEndpoints(eventType watch.EventType, endpoints *kapi.Endpoints) error
  • func (p *UniqueHost) HandleNamespaces(namespaces sets.String) error
  • func (p *UniqueHost) HandleRoute(eventType watch.EventType, route *routeapi.Route) error
  • func (p *UniqueHost) HostLen() int
  • func (p *UniqueHost) RoutesForHost(host string) ([]*routeapi.Route, bool)

Variables

var LogRejections = logRecorder{}

Functions

func HostForRoute

func HostForRoute(route *routeapi.Route) string

HostForRoute returns the host set on the route.

Types

type HostToRouteMap

type HostToRouteMap map[string][]*routeapi.Route

type NamespaceLister

type NamespaceLister interface {
	NamespaceNames() (sets.String, error)
}

NamespaceLister returns all the names that should be watched by the client

type RejectionRecorder

type RejectionRecorder interface {
	RecordRouteRejection(route *routeapi.Route, reason, message string)
}

RejectionRecorder is an object capable of recording why a route was rejected

type RouteHostFunc

type RouteHostFunc func(*routeapi.Route) string

RouteHostFunc returns a host for a route. It may return an empty string.

type RouteToHostMap

type RouteToHostMap map[string]string

type RouterController

type RouterController struct {
	Plugin        router.Plugin
	NextRoute     func() (watch.EventType, *routeapi.Route, error)
	NextEndpoints func() (watch.EventType, *kapi.Endpoints, error)

	Namespaces            NamespaceLister
	NamespaceSyncInterval time.Duration
	NamespaceWaitInterval time.Duration
	NamespaceRetries      int
	// contains filtered or unexported fields
}

RouterController abstracts the details of watching the Route and Endpoints resources from the Plugin implementation being used.

func (*RouterController) HandleEndpoints

func (c *RouterController) HandleEndpoints()

HandleEndpoints handles a single Endpoints event and refreshes the router backend.

func (*RouterController) HandleNamespaces

func (c *RouterController) HandleNamespaces()

func (*RouterController) HandleRoute

func (c *RouterController) HandleRoute()

HandleRoute handles a single Route event and synchronizes the router backend.

func (*RouterController) Run

func (c *RouterController) Run()

Run begins watching and syncing.

type StatusAdmitter

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

StatusAdmitter ensures routes added to the plugin have status set.

func NewStatusAdmitter

func NewStatusAdmitter(plugin router.Plugin, client client.RoutesNamespacer, name string) *StatusAdmitter

NewStatusAdmitter creates a plugin wrapper that ensures every accepted route has a status field set that matches this router. The admitter manages an LRU of recently seen conflicting updates to handle when two router processes with differing configurations are writing updates at the same time.

func (*StatusAdmitter) HandleEndpoints

func (a *StatusAdmitter) HandleEndpoints(eventType watch.EventType, route *kapi.Endpoints) error

func (*StatusAdmitter) HandleNamespaces

func (a *StatusAdmitter) HandleNamespaces(namespaces sets.String) error

func (*StatusAdmitter) HandleRoute

func (a *StatusAdmitter) HandleRoute(eventType watch.EventType, route *routeapi.Route) error

HandleRoute attempts to admit the provided route on watch add / modifications.

func (*StatusAdmitter) RecordRouteRejection

func (a *StatusAdmitter) RecordRouteRejection(route *routeapi.Route, reason, message string)

RecordRouteRejection attempts to update the route status with a reason for a route being rejected.

type UniqueHost

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

UniqueHost implements the router.Plugin interface to provide a template based, backend-agnostic router.

func NewUniqueHost

func NewUniqueHost(plugin router.Plugin, fn RouteHostFunc, recorder RejectionRecorder) *UniqueHost

NewUniqueHost creates a plugin wrapper that ensures only unique routes are passed into the underlying plugin. Recorder is an interface for indicating why a route was rejected.

func (*UniqueHost) HandleEndpoints

func (p *UniqueHost) HandleEndpoints(eventType watch.EventType, endpoints *kapi.Endpoints) error

HandleEndpoints processes watch events on the Endpoints resource.

func (*UniqueHost) HandleNamespaces

func (p *UniqueHost) HandleNamespaces(namespaces sets.String) error

HandleAllowedNamespaces limits the scope of valid routes to only those that match the provided namespace list.

func (*UniqueHost) HandleRoute

func (p *UniqueHost) HandleRoute(eventType watch.EventType, route *routeapi.Route) error

HandleRoute processes watch events on the Route resource. TODO: this function can probably be collapsed with the router itself, as a function that

determines which component needs to be recalculated (which template) and then does so
on demand.

func (*UniqueHost) HostLen

func (p *UniqueHost) HostLen() int

HostLen returns the number of hosts currently tracked by this plugin.

func (*UniqueHost) RoutesForHost

func (p *UniqueHost) RoutesForHost(host string) ([]*routeapi.Route, bool)

RoutesForHost is a helper that allows routes to be retrieved.