proxy

package
v1.11.0-alpha.0 Latest Latest
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Published: Feb 14, 2018 License: Apache-2.0 Imports: 8 Imported by: 0

Documentation

Overview

Package proxy implements the layer-3 network proxy.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func GetLocalEndpointIPs added in v1.10.6

func GetLocalEndpointIPs(endpointsMap EndpointsMap) map[types.NamespacedName]sets.String

GetLocalEndpointIPs returns endpoints IPs if given endpoint is local - local means the endpoint is running in same host as kube-proxy.

Types

type Endpoint added in v1.10.6

type Endpoint interface {
	// String returns endpoint string.  An example format can be: `IP:Port`.
	// We take the returned value as ServiceEndpoint.Endpoint.
	String() string
	// IsLocal returns true if the endpoint is running in same host as kube-proxy, otherwise returns false.
	IsLocal() bool
	// IP returns IP part of endpoints.
	IP() string
	// Equal checks if two endpoints are equal.
	Equal(Endpoint) bool
}

Endpoint in an interface which abstracts information about an endpoint.

type EndpointChangeTracker added in v1.10.6

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

EndpointChangeTracker carries state about uncommitted changes to an arbitrary number of Endpoints, keyed by their namespace and name.

func NewEndpointChangeTracker added in v1.10.6

func NewEndpointChangeTracker(hostname string) *EndpointChangeTracker

NewEndpointChangeTracker initializes an EndpointsChangeMap

func (*EndpointChangeTracker) Update added in v1.10.6

func (ect *EndpointChangeTracker) Update(previous, current *api.Endpoints, makeEndpoints func(IP string, port int, isLocal bool) Endpoint) bool

Update updates given service's endpoints change map based on the <previous, current> endpoints pair. It returns true if items changed, otherwise return false. Update can be used to add/update/delete items of EndpointsChangeMap. For example, Add item

  • pass <nil, endpoints> as the <previous, current> pair.

Update item

  • pass <oldEndpoints, endpoints> as the <previous, current> pair.

Delete item

  • pass <endpoints, nil> as the <previous, current> pair.

type EndpointsMap added in v1.10.6

type EndpointsMap map[ServicePortName][]Endpoint

EndpointsMap maps a service to one of its endpoint.

func (EndpointsMap) Merge added in v1.10.6

func (em EndpointsMap) Merge(other EndpointsMap)

Merge ensures that the current EndpointsMap contains all <service, endpoints> pairs from the EndpointsMap passed in.

func (EndpointsMap) Unmerge added in v1.10.6

func (em EndpointsMap) Unmerge(other EndpointsMap)

Unmerge removes the <service, endpoints> pairs from the current EndpointsMap which are contained in the EndpointsMap passed in.

type ProxyProvider added in v1.1.0

type ProxyProvider interface {
	// Sync immediately synchronizes the ProxyProvider's current state to proxy rules.
	Sync()
	// SyncLoop runs periodic work.
	// This is expected to run as a goroutine or as the main loop of the app.
	// It does not return.
	SyncLoop()
}

ProxyProvider is the interface provided by proxier implementations.

type ServiceChangeTracker added in v1.10.6

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

ServiceChangeTracker carries state about uncommitted changes to an arbitrary number of Services, keyed by their namespace and name.

func NewServiceChangeTracker added in v1.10.6

func NewServiceChangeTracker() *ServiceChangeTracker

NewServiceChangeTracker initializes a ServiceChangeTracker

func (*ServiceChangeTracker) Update added in v1.10.6

func (sct *ServiceChangeTracker) Update(previous, current *api.Service, makeServicePort func(servicePort *api.ServicePort, service *api.Service) ServicePort) bool

Update updates given service's change map based on the <previous, current> service pair. It returns true if items changed, otherwise return false. Update can be used to add/update/delete items of ServiceChangeMap. For example, Add item

  • pass <nil, service> as the <previous, current> pair.

Update item

  • pass <oldService, service> as the <previous, current> pair.

Delete item

  • pass <service, nil> as the <previous, current> pair.

makeServicePort() return a proxy.ServicePort based on the given Service and its ServicePort. We inject makeServicePort() so that giving caller side a chance to initialize proxy.ServicePort interface.

type ServiceEndpoint added in v1.10.6

type ServiceEndpoint struct {
	Endpoint        string
	ServicePortName ServicePortName
}

ServiceEndpoint is used to identify a service and one of its endpoint pair.

type ServiceMap added in v1.10.6

type ServiceMap map[ServicePortName]ServicePort

ServiceMap maps a service to its ServicePort information.

type ServicePort added in v1.10.6

type ServicePort interface {
	// String returns service string.  An example format can be: `IP:Port/Protocol`.
	String() string
	// ClusterIP returns service cluster IP.
	ClusterIP() string
	// Protocol returns service protocol.
	Protocol() api.Protocol
	// HealthCheckNodePort returns service health check node port if present.  If return 0, it means not present.
	HealthCheckNodePort() int
}

ServicePort is an interface which abstracts information about a service.

type ServicePortName added in v0.15.0

type ServicePortName struct {
	types.NamespacedName
	Port string
}

ServicePortName carries a namespace + name + portname. This is the unique identifier for a load-balanced service.

func (ServicePortName) String added in v0.15.0

func (spn ServicePortName) String() string

type UpdateEndpointMapResult added in v1.10.6

type UpdateEndpointMapResult struct {
	// HCEndpointsLocalIPSize maps an endpoints name to the length of its local IPs.
	HCEndpointsLocalIPSize map[types.NamespacedName]int
	// StaleEndpoints identifies if an endpoints service pair is stale.
	StaleEndpoints []ServiceEndpoint
	// StaleServiceNames identifies if a service is stale.
	StaleServiceNames []ServicePortName
}

UpdateEndpointMapResult is the updated results after applying endpoints changes.

func UpdateEndpointsMap added in v1.10.6

func UpdateEndpointsMap(endpointsMap EndpointsMap, changes *EndpointChangeTracker) (result UpdateEndpointMapResult)

UpdateEndpointsMap updates endpointsMap base on the given changes.

type UpdateServiceMapResult added in v1.10.6

type UpdateServiceMapResult struct {
	// HCServiceNodePorts is a map of Service names to node port numbers which indicate the health of that Service on this Node.
	// The value(uint16) of HCServices map is the service health check node port.
	HCServiceNodePorts map[types.NamespacedName]uint16
	// UDPStaleClusterIP holds stale (no longer assigned to a Service) Service IPs that had UDP ports.
	// Callers can use this to abort timeout-waits or clear connection-tracking information.
	UDPStaleClusterIP sets.String
}

UpdateServiceMapResult is the updated results after applying service changes.

func UpdateServiceMap added in v1.10.6

func UpdateServiceMap(serviceMap ServiceMap, changes *ServiceChangeTracker) (result UpdateServiceMapResult)

UpdateServiceMap updates ServiceMap based on the given changes.

Directories

Path Synopsis
apis
Package config provides decoupling between various configuration sources (etcd, files,...) and the pieces that actually care about them (loadbalancer, proxy).
Package config provides decoupling between various configuration sources (etcd, files,...) and the pieces that actually care about them (loadbalancer, proxy).
Package healthcheck provides tools for serving kube-proxy healthchecks.
Package healthcheck provides tools for serving kube-proxy healthchecks.

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