mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-11 23:50:19 +00:00
ff3e84ad67
updating kubernetes to 1.28.0 in the main repo. Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
301 lines
12 KiB
Go
301 lines
12 KiB
Go
/*
|
|
Copyright 2017 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 handlers
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"net/http"
|
|
"sync"
|
|
"time"
|
|
|
|
"go.opentelemetry.io/otel/attribute"
|
|
|
|
"k8s.io/apimachinery/pkg/api/errors"
|
|
"k8s.io/apimachinery/pkg/api/meta"
|
|
metainternalversionscheme "k8s.io/apimachinery/pkg/apis/meta/internalversion/scheme"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/apis/meta/v1/validation"
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
|
"k8s.io/apiserver/pkg/admission"
|
|
"k8s.io/apiserver/pkg/audit"
|
|
"k8s.io/apiserver/pkg/authorization/authorizer"
|
|
"k8s.io/apiserver/pkg/endpoints/handlers/fieldmanager"
|
|
"k8s.io/apiserver/pkg/endpoints/handlers/finisher"
|
|
requestmetrics "k8s.io/apiserver/pkg/endpoints/handlers/metrics"
|
|
"k8s.io/apiserver/pkg/endpoints/handlers/negotiation"
|
|
"k8s.io/apiserver/pkg/endpoints/request"
|
|
"k8s.io/apiserver/pkg/registry/rest"
|
|
"k8s.io/apiserver/pkg/util/dryrun"
|
|
"k8s.io/component-base/tracing"
|
|
"k8s.io/klog/v2"
|
|
)
|
|
|
|
// UpdateResource returns a function that will handle a resource update
|
|
func UpdateResource(r rest.Updater, scope *RequestScope, admit admission.Interface) http.HandlerFunc {
|
|
return func(w http.ResponseWriter, req *http.Request) {
|
|
ctx := req.Context()
|
|
// For performance tracking purposes.
|
|
ctx, span := tracing.Start(ctx, "Update", traceFields(req)...)
|
|
defer span.End(500 * time.Millisecond)
|
|
|
|
namespace, name, err := scope.Namer.Name(req)
|
|
if err != nil {
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
|
|
// enforce a timeout of at most requestTimeoutUpperBound (34s) or less if the user-provided
|
|
// timeout inside the parent context is lower than requestTimeoutUpperBound.
|
|
ctx, cancel := context.WithTimeout(ctx, requestTimeoutUpperBound)
|
|
defer cancel()
|
|
|
|
ctx = request.WithNamespace(ctx, namespace)
|
|
|
|
outputMediaType, _, err := negotiation.NegotiateOutputMediaType(req, scope.Serializer, scope)
|
|
if err != nil {
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
|
|
body, err := limitedReadBodyWithRecordMetric(ctx, req, scope.MaxRequestBodyBytes, scope.Resource.GroupResource().String(), requestmetrics.Update)
|
|
if err != nil {
|
|
span.AddEvent("limitedReadBody failed", attribute.Int("len", len(body)), attribute.String("err", err.Error()))
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
span.AddEvent("limitedReadBody succeeded", attribute.Int("len", len(body)))
|
|
|
|
options := &metav1.UpdateOptions{}
|
|
if err := metainternalversionscheme.ParameterCodec.DecodeParameters(req.URL.Query(), scope.MetaGroupVersion, options); err != nil {
|
|
err = errors.NewBadRequest(err.Error())
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
if errs := validation.ValidateUpdateOptions(options); len(errs) > 0 {
|
|
err := errors.NewInvalid(schema.GroupKind{Group: metav1.GroupName, Kind: "UpdateOptions"}, "", errs)
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
options.TypeMeta.SetGroupVersionKind(metav1.SchemeGroupVersion.WithKind("UpdateOptions"))
|
|
|
|
s, err := negotiation.NegotiateInputSerializer(req, false, scope.Serializer)
|
|
if err != nil {
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
defaultGVK := scope.Kind
|
|
original := r.New()
|
|
|
|
validationDirective := fieldValidation(options.FieldValidation)
|
|
decodeSerializer := s.Serializer
|
|
if validationDirective == metav1.FieldValidationWarn || validationDirective == metav1.FieldValidationStrict {
|
|
decodeSerializer = s.StrictSerializer
|
|
}
|
|
|
|
decoder := scope.Serializer.DecoderToVersion(decodeSerializer, scope.HubGroupVersion)
|
|
span.AddEvent("About to convert to expected version")
|
|
obj, gvk, err := decoder.Decode(body, &defaultGVK, original)
|
|
if err != nil {
|
|
strictError, isStrictError := runtime.AsStrictDecodingError(err)
|
|
switch {
|
|
case isStrictError && obj != nil && validationDirective == metav1.FieldValidationWarn:
|
|
addStrictDecodingWarnings(req.Context(), strictError.Errors())
|
|
case isStrictError && validationDirective == metav1.FieldValidationIgnore:
|
|
klog.Warningf("unexpected strict error when field validation is set to ignore")
|
|
fallthrough
|
|
default:
|
|
err = transformDecodeError(scope.Typer, err, original, gvk, body)
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
}
|
|
|
|
objGV := gvk.GroupVersion()
|
|
if !scope.AcceptsGroupVersion(objGV) {
|
|
err = errors.NewBadRequest(fmt.Sprintf("the API version in the data (%s) does not match the expected API version (%s)", objGV, defaultGVK.GroupVersion()))
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
span.AddEvent("Conversion done")
|
|
|
|
audit.LogRequestObject(req.Context(), obj, objGV, scope.Resource, scope.Subresource, scope.Serializer)
|
|
admit = admission.WithAudit(admit)
|
|
|
|
// if this object supports namespace info
|
|
if objectMeta, err := meta.Accessor(obj); err == nil {
|
|
// ensure namespace on the object is correct, or error if a conflicting namespace was set in the object
|
|
if err := rest.EnsureObjectNamespaceMatchesRequestNamespace(rest.ExpectedNamespaceForResource(namespace, scope.Resource), objectMeta); err != nil {
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
}
|
|
|
|
if err := checkName(obj, name, namespace, scope.Namer); err != nil {
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
|
|
userInfo, _ := request.UserFrom(ctx)
|
|
transformers := []rest.TransformFunc{}
|
|
|
|
// allows skipping managedFields update if the resulting object is too big
|
|
shouldUpdateManagedFields := true
|
|
admit = fieldmanager.NewManagedFieldsValidatingAdmissionController(admit)
|
|
transformers = append(transformers, func(_ context.Context, newObj, liveObj runtime.Object) (runtime.Object, error) {
|
|
if shouldUpdateManagedFields {
|
|
return scope.FieldManager.UpdateNoErrors(liveObj, newObj, managerOrUserAgent(options.FieldManager, req.UserAgent())), nil
|
|
}
|
|
return newObj, nil
|
|
})
|
|
|
|
if mutatingAdmission, ok := admit.(admission.MutationInterface); ok {
|
|
transformers = append(transformers, func(ctx context.Context, newObj, oldObj runtime.Object) (runtime.Object, error) {
|
|
isNotZeroObject, err := hasUID(oldObj)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("unexpected error when extracting UID from oldObj: %v", err.Error())
|
|
} else if !isNotZeroObject {
|
|
if mutatingAdmission.Handles(admission.Create) {
|
|
return newObj, mutatingAdmission.Admit(ctx, admission.NewAttributesRecord(newObj, nil, scope.Kind, namespace, name, scope.Resource, scope.Subresource, admission.Create, updateToCreateOptions(options), dryrun.IsDryRun(options.DryRun), userInfo), scope)
|
|
}
|
|
} else {
|
|
if mutatingAdmission.Handles(admission.Update) {
|
|
return newObj, mutatingAdmission.Admit(ctx, admission.NewAttributesRecord(newObj, oldObj, scope.Kind, namespace, name, scope.Resource, scope.Subresource, admission.Update, options, dryrun.IsDryRun(options.DryRun), userInfo), scope)
|
|
}
|
|
}
|
|
return newObj, nil
|
|
})
|
|
transformers = append(transformers, func(ctx context.Context, newObj, oldObj runtime.Object) (runtime.Object, error) {
|
|
// Dedup owner references again after mutating admission happens
|
|
dedupOwnerReferencesAndAddWarning(newObj, req.Context(), true)
|
|
return newObj, nil
|
|
})
|
|
}
|
|
|
|
createAuthorizerAttributes := authorizer.AttributesRecord{
|
|
User: userInfo,
|
|
ResourceRequest: true,
|
|
Path: req.URL.Path,
|
|
Verb: "create",
|
|
APIGroup: scope.Resource.Group,
|
|
APIVersion: scope.Resource.Version,
|
|
Resource: scope.Resource.Resource,
|
|
Subresource: scope.Subresource,
|
|
Namespace: namespace,
|
|
Name: name,
|
|
}
|
|
|
|
span.AddEvent("About to store object in database")
|
|
wasCreated := false
|
|
requestFunc := func() (runtime.Object, error) {
|
|
obj, created, err := r.Update(
|
|
ctx,
|
|
name,
|
|
rest.DefaultUpdatedObjectInfo(obj, transformers...),
|
|
withAuthorization(rest.AdmissionToValidateObjectFunc(
|
|
admit,
|
|
admission.NewAttributesRecord(nil, nil, scope.Kind, namespace, name, scope.Resource, scope.Subresource, admission.Create, updateToCreateOptions(options), dryrun.IsDryRun(options.DryRun), userInfo), scope),
|
|
scope.Authorizer, createAuthorizerAttributes),
|
|
rest.AdmissionToValidateObjectUpdateFunc(
|
|
admit,
|
|
admission.NewAttributesRecord(nil, nil, scope.Kind, namespace, name, scope.Resource, scope.Subresource, admission.Update, options, dryrun.IsDryRun(options.DryRun), userInfo), scope),
|
|
false,
|
|
options,
|
|
)
|
|
wasCreated = created
|
|
return obj, err
|
|
}
|
|
// Dedup owner references before updating managed fields
|
|
dedupOwnerReferencesAndAddWarning(obj, req.Context(), false)
|
|
result, err := finisher.FinishRequest(ctx, func() (runtime.Object, error) {
|
|
result, err := requestFunc()
|
|
// If the object wasn't committed to storage because it's serialized size was too large,
|
|
// it is safe to remove managedFields (which can be large) and try again.
|
|
if isTooLargeError(err) {
|
|
if accessor, accessorErr := meta.Accessor(obj); accessorErr == nil {
|
|
accessor.SetManagedFields(nil)
|
|
shouldUpdateManagedFields = false
|
|
result, err = requestFunc()
|
|
}
|
|
}
|
|
return result, err
|
|
})
|
|
if err != nil {
|
|
span.AddEvent("Write to database call failed", attribute.Int("len", len(body)), attribute.String("err", err.Error()))
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
span.AddEvent("Write to database call succeeded", attribute.Int("len", len(body)))
|
|
|
|
status := http.StatusOK
|
|
if wasCreated {
|
|
status = http.StatusCreated
|
|
}
|
|
|
|
span.AddEvent("About to write a response")
|
|
defer span.AddEvent("Writing http response done")
|
|
transformResponseObject(ctx, scope, req, w, status, outputMediaType, result)
|
|
}
|
|
}
|
|
|
|
func withAuthorization(validate rest.ValidateObjectFunc, a authorizer.Authorizer, attributes authorizer.Attributes) rest.ValidateObjectFunc {
|
|
var once sync.Once
|
|
var authorizerDecision authorizer.Decision
|
|
var authorizerReason string
|
|
var authorizerErr error
|
|
return func(ctx context.Context, obj runtime.Object) error {
|
|
if a == nil {
|
|
return errors.NewInternalError(fmt.Errorf("no authorizer provided, unable to authorize a create on update"))
|
|
}
|
|
once.Do(func() {
|
|
authorizerDecision, authorizerReason, authorizerErr = a.Authorize(ctx, attributes)
|
|
})
|
|
// an authorizer like RBAC could encounter evaluation errors and still allow the request, so authorizer decision is checked before error here.
|
|
if authorizerDecision == authorizer.DecisionAllow {
|
|
// Continue to validating admission
|
|
return validate(ctx, obj)
|
|
}
|
|
if authorizerErr != nil {
|
|
return errors.NewInternalError(authorizerErr)
|
|
}
|
|
|
|
// The user is not authorized to perform this action, so we need to build the error response
|
|
gr := schema.GroupResource{
|
|
Group: attributes.GetAPIGroup(),
|
|
Resource: attributes.GetResource(),
|
|
}
|
|
name := attributes.GetName()
|
|
err := fmt.Errorf("%v", authorizerReason)
|
|
return errors.NewForbidden(gr, name, err)
|
|
}
|
|
}
|
|
|
|
// updateToCreateOptions creates a CreateOptions with the same field values as the provided UpdateOptions.
|
|
func updateToCreateOptions(uo *metav1.UpdateOptions) *metav1.CreateOptions {
|
|
if uo == nil {
|
|
return nil
|
|
}
|
|
co := &metav1.CreateOptions{
|
|
DryRun: uo.DryRun,
|
|
FieldManager: uo.FieldManager,
|
|
FieldValidation: uo.FieldValidation,
|
|
}
|
|
co.TypeMeta.SetGroupVersionKind(metav1.SchemeGroupVersion.WithKind("CreateOptions"))
|
|
return co
|
|
}
|