mirror of
https://github.com/kubernetes-sigs/prometheus-adapter.git
synced 2026-04-07 02:07:58 +00:00
a293b2bf94
Travis seems to be having issues pulling deps, so we'll have to check in the vendor directory and prevent the makefile from trying to regenerate it normally.
119 lines
4.9 KiB
Go
119 lines
4.9 KiB
Go
/*
|
|
Copyright 2014 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package admission
|
|
|
|
import (
|
|
"io"
|
|
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
|
"k8s.io/apiserver/pkg/authentication/user"
|
|
)
|
|
|
|
// Attributes is an interface used by AdmissionController to get information about a request
|
|
// that is used to make an admission decision.
|
|
type Attributes interface {
|
|
// GetName returns the name of the object as presented in the request. On a CREATE operation, the client
|
|
// may omit name and rely on the server to generate the name. If that is the case, this method will return
|
|
// the empty string
|
|
GetName() string
|
|
// GetNamespace is the namespace associated with the request (if any)
|
|
GetNamespace() string
|
|
// GetResource is the name of the resource being requested. This is not the kind. For example: pods
|
|
GetResource() schema.GroupVersionResource
|
|
// GetSubresource 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".
|
|
GetSubresource() string
|
|
// GetOperation is the operation being performed
|
|
GetOperation() Operation
|
|
// GetObject is the object from the incoming request prior to default values being applied
|
|
GetObject() runtime.Object
|
|
// GetOldObject is the existing object. Only populated for UPDATE requests.
|
|
GetOldObject() runtime.Object
|
|
// GetKind is the type of object being manipulated. For example: Pod
|
|
GetKind() schema.GroupVersionKind
|
|
// GetUserInfo is information about the requesting user
|
|
GetUserInfo() user.Info
|
|
|
|
// AddAnnotation sets annotation according to key-value pair. The key should be qualified, e.g., podsecuritypolicy.admission.k8s.io/admit-policy, where
|
|
// "podsecuritypolicy" is the name of the plugin, "admission.k8s.io" is the name of the organization, "admit-policy" is the key name.
|
|
// An error is returned if the format of key is invalid. When trying to overwrite annotation with a new value, an error is returned.
|
|
// Both ValidationInterface and MutationInterface are allowed to add Annotations.
|
|
AddAnnotation(key, value string) error
|
|
}
|
|
|
|
// privateAnnotationsGetter is a private interface which allows users to get annotations from Attributes.
|
|
type privateAnnotationsGetter interface {
|
|
getAnnotations() map[string]string
|
|
}
|
|
|
|
// AnnotationsGetter allows users to get annotations from Attributes. An alternate Attribute should implement
|
|
// this interface.
|
|
type AnnotationsGetter interface {
|
|
GetAnnotations() map[string]string
|
|
}
|
|
|
|
// Interface is an abstract, pluggable interface for Admission Control decisions.
|
|
type Interface interface {
|
|
// Handles returns true if this admission controller can handle the given operation
|
|
// where operation can be one of CREATE, UPDATE, DELETE, or CONNECT
|
|
Handles(operation Operation) bool
|
|
}
|
|
|
|
type MutationInterface interface {
|
|
Interface
|
|
|
|
// Admit makes an admission decision based on the request attributes
|
|
Admit(a Attributes) (err error)
|
|
}
|
|
|
|
// ValidationInterface is an abstract, pluggable interface for Admission Control decisions.
|
|
type ValidationInterface interface {
|
|
Interface
|
|
|
|
// Validate makes an admission decision based on the request attributes. It is NOT allowed to mutate
|
|
Validate(a Attributes) (err error)
|
|
}
|
|
|
|
// Operation is the type of resource operation being checked for admission control
|
|
type Operation string
|
|
|
|
// Operation constants
|
|
const (
|
|
Create Operation = "CREATE"
|
|
Update Operation = "UPDATE"
|
|
Delete Operation = "DELETE"
|
|
Connect Operation = "CONNECT"
|
|
)
|
|
|
|
// PluginInitializer is used for initialization of shareable resources between admission plugins.
|
|
// After initialization the resources have to be set separately
|
|
type PluginInitializer interface {
|
|
Initialize(plugin Interface)
|
|
}
|
|
|
|
// InitializationValidator holds ValidateInitialization functions, which are responsible for validation of initialized
|
|
// shared resources and should be implemented on admission plugins
|
|
type InitializationValidator interface {
|
|
ValidateInitialization() error
|
|
}
|
|
|
|
// ConfigProvider provides a way to get configuration for an admission plugin based on its name
|
|
type ConfigProvider interface {
|
|
ConfigFor(pluginName string) (io.Reader, error)
|
|
}
|