/
types.go
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/
types.go
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// SPDX-License-Identifier: Apache-2.0
// Copyright Authors of Cilium
// Copyright 2019 The Kubernetes Authors.
package v1
import (
slim_corev1 "github.com/cilium/cilium/pkg/k8s/slim/k8s/api/core/v1"
slim_metav1 "github.com/cilium/cilium/pkg/k8s/slim/k8s/apis/meta/v1"
)
// +genclient
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
// EndpointSlice represents a subset of the endpoints that implement a service.
// For a given service there may be multiple EndpointSlice objects, selected by
// labels, which must be joined to produce the full set of endpoints.
type EndpointSlice struct {
slim_metav1.TypeMeta `json:",inline"`
// Standard object's metadata.
// +optional
slim_metav1.ObjectMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
// addressType specifies the type of address carried by this EndpointSlice.
// All addresses in this slice must be the same type. This field is
// immutable after creation. The following address types are currently
// supported:
// * IPv4: Represents an IPv4 Address.
// * IPv6: Represents an IPv6 Address.
// * FQDN: Represents a Fully Qualified Domain Name.
AddressType AddressType `json:"addressType" protobuf:"bytes,4,rep,name=addressType"`
// endpoints is a list of unique endpoints in this slice. Each slice may
// include a maximum of 1000 endpoints.
// +listType=atomic
Endpoints []Endpoint `json:"endpoints" protobuf:"bytes,2,rep,name=endpoints"`
// ports specifies the list of network ports exposed by each endpoint in
// this slice. Each port must have a unique name. When ports is empty, it
// indicates that there are no defined ports. When a port is defined with a
// nil port value, it indicates "all ports". Each slice may include a
// maximum of 100 ports.
// +optional
// +listType=atomic
Ports []EndpointPort `json:"ports" protobuf:"bytes,3,rep,name=ports"`
}
// AddressType represents the type of address referred to by an endpoint.
// +enum
type AddressType string
const (
// AddressTypeIPv4 represents an IPv4 Address.
AddressTypeIPv4 = AddressType(slim_corev1.IPv4Protocol)
// AddressTypeIPv6 represents an IPv6 Address.
AddressTypeIPv6 = AddressType(slim_corev1.IPv6Protocol)
// AddressTypeFQDN represents a FQDN.
AddressTypeFQDN = AddressType("FQDN")
)
// Endpoint represents a single logical "backend" implementing a service.
type Endpoint struct {
// addresses of this endpoint. The contents of this field are interpreted
// according to the corresponding EndpointSlice addressType field. Consumers
// must handle different types of addresses in the context of their own
// capabilities. This must contain at least one address but no more than
// 100. These are all assumed to be fungible and clients may choose to only
// use the first element. Refer to: https://issue.k8s.io/106267
// +listType=set
Addresses []string `json:"addresses" protobuf:"bytes,1,rep,name=addresses"`
// conditions contains information about the current status of the endpoint.
Conditions EndpointConditions `json:"conditions,omitempty" protobuf:"bytes,2,opt,name=conditions"`
// deprecatedTopology contains topology information part of the v1beta1
// API. This field is deprecated, and will be removed when the v1beta1
// API is removed (no sooner than kubernetes v1.24). While this field can
// hold values, it is not writable through the v1 API, and any attempts to
// write to it will be silently ignored. Topology information can be found
// in the zone and nodeName fields instead.
// +optional
DeprecatedTopology map[string]string `json:"deprecatedTopology,omitempty" protobuf:"bytes,5,opt,name=deprecatedTopology"`
// nodeName represents the name of the Node hosting this endpoint. This can
// be used to determine endpoints local to a Node.
// +optional
NodeName *string `json:"nodeName,omitempty" protobuf:"bytes,6,opt,name=nodeName"`
// zone is the name of the Zone this endpoint exists in.
// +optional
Zone *string `json:"zone,omitempty" protobuf:"bytes,7,opt,name=zone"`
// hints contains information associated with how an endpoint should be
// consumed.
// +optional
Hints *EndpointHints `json:"hints,omitempty" protobuf:"bytes,8,opt,name=hints"`
}
// EndpointConditions represents the current condition of an endpoint.
type EndpointConditions struct {
// ready indicates that this endpoint is prepared to receive traffic,
// according to whatever system is managing the endpoint. A nil value
// indicates an unknown state. In most cases consumers should interpret this
// unknown state as ready. For compatibility reasons, ready should never be
// "true" for terminating endpoints, except when the normal readiness
// behavior is being explicitly overridden, for example when the associated
// Service has set the publishNotReadyAddresses flag.
// +optional
Ready *bool `json:"ready,omitempty" protobuf:"bytes,1,name=ready"`
// serving is identical to ready except that it is set regardless of the
// terminating state of endpoints. This condition should be set to true for
// a ready endpoint that is terminating. If nil, consumers should defer to
// the ready condition.
// +optional
Serving *bool `json:"serving,omitempty" protobuf:"bytes,2,name=serving"`
// terminating indicates that this endpoint is terminating. A nil value
// indicates an unknown state. Consumers should interpret this unknown state
// to mean that the endpoint is not terminating.
// +optional
Terminating *bool `json:"terminating,omitempty" protobuf:"bytes,3,name=terminating"`
}
// EndpointHints provides hints describing how an endpoint should be consumed.
type EndpointHints struct {
// forZones indicates the zone(s) this endpoint should be consumed by to
// enable topology aware routing.
// +listType=atomic
ForZones []ForZone `json:"forZones,omitempty" protobuf:"bytes,1,name=forZones"`
}
// ForZone provides information about which zones should consume this endpoint.
type ForZone struct {
// name represents the name of the zone.
Name string `json:"name" protobuf:"bytes,1,name=name"`
}
// EndpointPort represents a Port used by an EndpointSlice
// +structType=atomic
type EndpointPort struct {
// name represents the name of this port. All ports in an EndpointSlice must have a unique name.
// If the EndpointSlice is derived from a Kubernetes service, this corresponds to the Service.ports[].name.
// Name must either be an empty string or pass DNS_LABEL validation:
// * must be no more than 63 characters long.
// * must consist of lower case alphanumeric characters or '-'.
// * must start and end with an alphanumeric character.
// Default is empty string.
Name *string `json:"name,omitempty" protobuf:"bytes,1,name=name"`
// protocol represents the IP protocol for this port.
// Must be UDP, TCP, or SCTP.
// Default is TCP.
Protocol *slim_corev1.Protocol `json:"protocol,omitempty" protobuf:"bytes,2,name=protocol"`
// port represents the port number of the endpoint.
// If this is not specified, ports are not restricted and must be
// interpreted in the context of the specific consumer.
Port *int32 `json:"port,omitempty" protobuf:"bytes,3,opt,name=port"`
}
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
// EndpointSliceList represents a list of endpoint slices
type EndpointSliceList struct {
slim_metav1.TypeMeta `json:",inline"`
// Standard list metadata.
// +optional
slim_metav1.ListMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
// items is the list of endpoint slices
Items []EndpointSlice `json:"items" protobuf:"bytes,2,rep,name=items"`
}