controller

package
v3.6.0-alpha.2 Latest Latest
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 Go to latest Published: Jun 7, 2017 License: Apache-2.0 Imports: 23 Imported by: 0

Documentation

Overview

Package controller contains the router controller.

Index

Constants

This section is empty.

Variables

View Source 
var LogRejections = logRecorder{}

Functions

func GetNameForHost 

func GetNameForHost(name string) string

GetNameForHost returns the name of the ingress if the route name was generated from a path, otherwise it returns the name as given.

func GetSafeRouteName 

func GetSafeRouteName(name string) string

GetSafeRouteName returns a name that is safe for use in an HAproxy config.

func HostForRoute 

func HostForRoute(route *routeapi.Route) string

HostForRoute returns the host set on the route.

func IsGeneratedRouteName 

func IsGeneratedRouteName(name string) bool

IsGeneratedRoute indicates whether the given route name was generated from an ingress.

Types

type ExtendedValidator 

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

ExtendedValidator implements the router.Plugin interface to provide extended config validation for template based, backend-agnostic routers.

func NewExtendedValidator 

func NewExtendedValidator(plugin router.Plugin, recorder RejectionRecorder) *ExtendedValidator

NewExtendedValidator creates a plugin wrapper that ensures only routes that pass extended validation are relayed to the next plugin in the chain. Recorder is an interface for indicating why a route was rejected.

func (*ExtendedValidator) Commit 

func (p *ExtendedValidator) Commit() error

func (*ExtendedValidator) HandleEndpoints 

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

HandleEndpoints processes watch events on the Endpoints resource.

func (*ExtendedValidator) HandleNamespaces 

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

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

func (*ExtendedValidator) HandleNode 

func (p *ExtendedValidator) HandleNode(eventType watch.EventType, node *kapi.Node) error

HandleNode processes watch events on the node resource

func (*ExtendedValidator) HandleRoute 

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

HandleRoute processes watch events on the Route resource.

type HostAdmitter 

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

HostAdmitter implements the router.Plugin interface to add admission control checks for routes in template based, backend-agnostic routers.

func NewHostAdmitter 

func NewHostAdmitter(plugin router.Plugin, fn RouteAdmissionFunc, allowWildcards, disableNamespaceCheck bool, recorder RejectionRecorder) *HostAdmitter

NewHostAdmitter creates a plugin wrapper that checks whether or not to admit routes and relay them to the next plugin in the chain. Recorder is an interface for indicating why a route was rejected.

func (*HostAdmitter) Commit 

func (p *HostAdmitter) Commit() error

func (*HostAdmitter) HandleEndpoints 

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

HandleEndpoints processes watch events on the Endpoints resource.

func (*HostAdmitter) HandleNamespaces 

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

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

func (*HostAdmitter) HandleNode 

func (p *HostAdmitter) HandleNode(eventType watch.EventType, node *kapi.Node) error

HandleNode processes watch events on the Node resource.

func (*HostAdmitter) HandleRoute 

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

HandleRoute processes watch events on the Route resource.

type HostToRouteMap 

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

type IngressTranslator 

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

IngressTranslator converts secret and ingress events into route events.

- Caches ingresses to enable:

  • Identification of which secrets are referenced by ingresses
  • Generation of route events in response to a secret event
  • Route deletion when an ingress rule is removed

- Caches secrets to minimize the lookups required to generate route events from an ingress

  • Secrets will be read into the cache via Get() the first time they are referenced
  • Only secrets referenced by an ingress cached by the router will themselves be cached
  • Secrets will be updated by calls to TranslateSecretEvent

func NewIngressTranslator 

func NewIngressTranslator(kc kcoreclient.SecretsGetter) *IngressTranslator

NewIngressTranslator creates a new cache for the given client

func (*IngressTranslator) TranslateIngressEvent 

func (it *IngressTranslator) TranslateIngressEvent(eventType watch.EventType, ingress *extensions.Ingress) []ingressRouteEvents

TranslateIngressEvent converts an ingress event into route events.

func (*IngressTranslator) TranslateSecretEvent 

func (it *IngressTranslator) TranslateSecretEvent(eventType watch.EventType, secret *kapi.Secret) (events []ingressRouteEvents)

TranslateSecretEvent converts the given secret event into route events.

func (*IngressTranslator) UpdateNamespaces 

func (it *IngressTranslator) UpdateNamespaces(namespaces sets.String)

UpdateNamespaces sets which namespaces ingress objects are allowed from and updates the cache accordingly.

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 RouteAdmissionFunc 

type RouteAdmissionFunc func(*routeapi.Route) error

RouteAdmissionFunc determines whether or not to admit a route.

type RouteHostFunc 

type RouteHostFunc func(*routeapi.Route) string

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

type RouteMap 

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

RouteMap contains all routes associated with a key

func (RouteMap) InsertRoute 

func (srm RouteMap) InsertRoute(key string, route *routeapi.Route)

func (RouteMap) RemoveRoute 

func (srm RouteMap) RemoveRoute(key string, route *routeapi.Route) bool

RemoveRoute removes any existing routes that match the given route's namespace and name for a key

type RouteToHostMap 

type RouteToHostMap map[string]string

type RouterController 

type RouterController struct {
	Plugin        router.Plugin
	NextRoute     func() (watch.EventType, *routeapi.Route, error)
	NextNode      func() (watch.EventType, *kapi.Node, error)
	NextEndpoints func() (watch.EventType, *kapi.Endpoints, error)
	NextIngress   func() (watch.EventType, *extensions.Ingress, error)
	NextSecret    func() (watch.EventType, *kapi.Secret, error)

	RoutesListConsumed    func() bool
	EndpointsListConsumed func() bool
	IngressesListConsumed func() bool
	SecretsListConsumed   func() bool

	RoutesListSuccessfulAtLeastOnce    func() bool
	EndpointsListSuccessfulAtLeastOnce func() bool
	IngressesListSuccessfulAtLeastOnce func() bool
	SecretsListSuccessfulAtLeastOnce   func() bool
	RoutesListCount                    func() int
	EndpointsListCount                 func() int
	IngressesListCount                 func() int
	SecretsListCount                   func() int

	WatchNodes bool

	Namespaces            NamespaceLister
	NamespaceSyncInterval time.Duration
	NamespaceWaitInterval time.Duration
	NamespaceRetries      int

	EnableIngress     bool
	IngressTranslator *IngressTranslator
	// 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) HandleIngress 

func (c *RouterController) HandleIngress()

HandleIngress handles a single Ingress event and synchronizes the router backend.

func (*RouterController) HandleNamespaces 

func (c *RouterController) HandleNamespaces()

func (*RouterController) HandleNode 

func (c *RouterController) HandleNode()

HandleNode handles a single Node event and synchronizes the router backend

func (*RouterController) HandleRoute 

func (c *RouterController) HandleRoute()

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

func (*RouterController) HandleSecret 

func (c *RouterController) HandleSecret()

HandleSecret handles a single Secret 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, hostName 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) Commit 

func (a *StatusAdmitter) Commit() error

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) HandleNode 

func (a *StatusAdmitter) HandleNode(eventType watch.EventType, node *kapi.Node) 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, disableOwnershipCheck bool, 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) Commit 

func (p *UniqueHost) Commit() error

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

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

func (*UniqueHost) HandleNode 

func (p *UniqueHost) HandleNode(eventType watch.EventType, node *kapi.Node) error

HandleNode processes watch events on the Node resource and calls the router

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.

Source Files

View all Source files

Directories

Path Synopsis
Package factory contains code used to create the router controller.
 Package factory contains code used to create the router controller.

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