mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-29 09:40:22 +00:00
5a66991bb3
updating the kubernetes release to the latest in main go.mod Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
787 lines
28 KiB
Go
787 lines
28 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"
|
|
"strings"
|
|
"time"
|
|
|
|
"go.opentelemetry.io/otel/attribute"
|
|
jsonpatch "gopkg.in/evanphx/json-patch.v4"
|
|
kjson "sigs.k8s.io/json"
|
|
|
|
"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/unstructured"
|
|
"k8s.io/apimachinery/pkg/apis/meta/v1/validation"
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
|
"k8s.io/apimachinery/pkg/types"
|
|
"k8s.io/apimachinery/pkg/util/managedfields"
|
|
"k8s.io/apimachinery/pkg/util/mergepatch"
|
|
"k8s.io/apimachinery/pkg/util/sets"
|
|
"k8s.io/apimachinery/pkg/util/strategicpatch"
|
|
"k8s.io/apimachinery/pkg/util/validation/field"
|
|
"k8s.io/apimachinery/pkg/util/yaml"
|
|
"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"
|
|
)
|
|
|
|
const (
|
|
// maximum number of operations a single json patch may contain.
|
|
maxJSONPatchOperations = 10000
|
|
)
|
|
|
|
// PatchResource returns a function that will handle a resource patch.
|
|
func PatchResource(r rest.Patcher, scope *RequestScope, admit admission.Interface, patchTypes []string) http.HandlerFunc {
|
|
return func(w http.ResponseWriter, req *http.Request) {
|
|
ctx := req.Context()
|
|
// For performance tracking purposes.
|
|
ctx, span := tracing.Start(ctx, "Patch", traceFields(req)...)
|
|
defer span.End(500 * time.Millisecond)
|
|
|
|
// Do this first, otherwise name extraction can fail for unrecognized content types
|
|
// TODO: handle this in negotiation
|
|
contentType := req.Header.Get("Content-Type")
|
|
// Remove "; charset=" if included in header.
|
|
if idx := strings.Index(contentType, ";"); idx > 0 {
|
|
contentType = contentType[:idx]
|
|
}
|
|
patchType := types.PatchType(contentType)
|
|
|
|
// Ensure the patchType is one we support
|
|
if !sets.NewString(patchTypes...).Has(contentType) {
|
|
scope.err(negotiation.NewUnsupportedMediaTypeError(patchTypes), w, req)
|
|
return
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
patchBytes, err := limitedReadBodyWithRecordMetric(ctx, req, scope.MaxRequestBodyBytes, scope.Resource.GroupResource().String(), requestmetrics.Patch)
|
|
if err != nil {
|
|
span.AddEvent("limitedReadBody failed", attribute.Int("len", len(patchBytes)), attribute.String("err", err.Error()))
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
span.AddEvent("limitedReadBody succeeded", attribute.Int("len", len(patchBytes)))
|
|
|
|
options := &metav1.PatchOptions{}
|
|
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.ValidatePatchOptions(options, patchType); len(errs) > 0 {
|
|
err := errors.NewInvalid(schema.GroupKind{Group: metav1.GroupName, Kind: "PatchOptions"}, "", errs)
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
options.TypeMeta.SetGroupVersionKind(metav1.SchemeGroupVersion.WithKind("PatchOptions"))
|
|
|
|
admit = admission.WithAudit(admit)
|
|
|
|
audit.LogRequestPatch(req.Context(), patchBytes)
|
|
span.AddEvent("Recorded the audit event")
|
|
|
|
baseContentType := runtime.ContentTypeJSON
|
|
if patchType == types.ApplyPatchType {
|
|
baseContentType = runtime.ContentTypeYAML
|
|
}
|
|
s, ok := runtime.SerializerInfoForMediaType(scope.Serializer.SupportedMediaTypes(), baseContentType)
|
|
if !ok {
|
|
scope.err(fmt.Errorf("no serializer defined for %v", baseContentType), w, req)
|
|
return
|
|
}
|
|
gv := scope.Kind.GroupVersion()
|
|
|
|
validationDirective := fieldValidation(options.FieldValidation)
|
|
decodeSerializer := s.Serializer
|
|
if validationDirective == metav1.FieldValidationWarn || validationDirective == metav1.FieldValidationStrict {
|
|
decodeSerializer = s.StrictSerializer
|
|
}
|
|
|
|
codec := runtime.NewCodec(
|
|
scope.Serializer.EncoderForVersion(s.Serializer, gv),
|
|
scope.Serializer.DecoderToVersion(decodeSerializer, scope.HubGroupVersion),
|
|
)
|
|
|
|
userInfo, _ := request.UserFrom(ctx)
|
|
staticCreateAttributes := admission.NewAttributesRecord(
|
|
nil,
|
|
nil,
|
|
scope.Kind,
|
|
namespace,
|
|
name,
|
|
scope.Resource,
|
|
scope.Subresource,
|
|
admission.Create,
|
|
patchToCreateOptions(options),
|
|
dryrun.IsDryRun(options.DryRun),
|
|
userInfo)
|
|
staticUpdateAttributes := admission.NewAttributesRecord(
|
|
nil,
|
|
nil,
|
|
scope.Kind,
|
|
namespace,
|
|
name,
|
|
scope.Resource,
|
|
scope.Subresource,
|
|
admission.Update,
|
|
patchToUpdateOptions(options),
|
|
dryrun.IsDryRun(options.DryRun),
|
|
userInfo,
|
|
)
|
|
|
|
admit = fieldmanager.NewManagedFieldsValidatingAdmissionController(admit)
|
|
|
|
mutatingAdmission, _ := admit.(admission.MutationInterface)
|
|
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,
|
|
}
|
|
|
|
p := patcher{
|
|
namer: scope.Namer,
|
|
creater: scope.Creater,
|
|
defaulter: scope.Defaulter,
|
|
typer: scope.Typer,
|
|
unsafeConvertor: scope.UnsafeConvertor,
|
|
kind: scope.Kind,
|
|
resource: scope.Resource,
|
|
subresource: scope.Subresource,
|
|
dryRun: dryrun.IsDryRun(options.DryRun),
|
|
validationDirective: validationDirective,
|
|
|
|
objectInterfaces: scope,
|
|
|
|
hubGroupVersion: scope.HubGroupVersion,
|
|
|
|
createValidation: withAuthorization(rest.AdmissionToValidateObjectFunc(admit, staticCreateAttributes, scope), scope.Authorizer, createAuthorizerAttributes),
|
|
updateValidation: rest.AdmissionToValidateObjectUpdateFunc(admit, staticUpdateAttributes, scope),
|
|
admissionCheck: mutatingAdmission,
|
|
|
|
codec: codec,
|
|
|
|
options: options,
|
|
|
|
restPatcher: r,
|
|
name: name,
|
|
patchType: patchType,
|
|
patchBytes: patchBytes,
|
|
userAgent: req.UserAgent(),
|
|
}
|
|
|
|
result, wasCreated, err := p.patchResource(ctx, scope)
|
|
if err != nil {
|
|
scope.err(err, w, req)
|
|
return
|
|
}
|
|
span.AddEvent("Object stored in database")
|
|
|
|
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)
|
|
}
|
|
}
|
|
|
|
type mutateObjectUpdateFunc func(ctx context.Context, obj, old runtime.Object) error
|
|
|
|
// patcher breaks the process of patch application and retries into smaller
|
|
// pieces of functionality.
|
|
// TODO: Use builder pattern to construct this object?
|
|
// TODO: As part of that effort, some aspects of PatchResource above could be
|
|
// moved into this type.
|
|
type patcher struct {
|
|
// Pieces of RequestScope
|
|
namer ScopeNamer
|
|
creater runtime.ObjectCreater
|
|
defaulter runtime.ObjectDefaulter
|
|
typer runtime.ObjectTyper
|
|
unsafeConvertor runtime.ObjectConvertor
|
|
resource schema.GroupVersionResource
|
|
kind schema.GroupVersionKind
|
|
subresource string
|
|
dryRun bool
|
|
validationDirective string
|
|
|
|
objectInterfaces admission.ObjectInterfaces
|
|
|
|
hubGroupVersion schema.GroupVersion
|
|
|
|
// Validation functions
|
|
createValidation rest.ValidateObjectFunc
|
|
updateValidation rest.ValidateObjectUpdateFunc
|
|
admissionCheck admission.MutationInterface
|
|
|
|
codec runtime.Codec
|
|
|
|
options *metav1.PatchOptions
|
|
|
|
// Operation information
|
|
restPatcher rest.Patcher
|
|
name string
|
|
patchType types.PatchType
|
|
patchBytes []byte
|
|
userAgent string
|
|
|
|
// Set at invocation-time (by applyPatch) and immutable thereafter
|
|
namespace string
|
|
updatedObjectInfo rest.UpdatedObjectInfo
|
|
mechanism patchMechanism
|
|
forceAllowCreate bool
|
|
}
|
|
|
|
type patchMechanism interface {
|
|
applyPatchToCurrentObject(requextContext context.Context, currentObject runtime.Object) (runtime.Object, error)
|
|
createNewObject(requestContext context.Context) (runtime.Object, error)
|
|
}
|
|
|
|
type jsonPatcher struct {
|
|
*patcher
|
|
|
|
fieldManager *managedfields.FieldManager
|
|
}
|
|
|
|
func (p *jsonPatcher) applyPatchToCurrentObject(requestContext context.Context, currentObject runtime.Object) (runtime.Object, error) {
|
|
// Encode will convert & return a versioned object in JSON.
|
|
currentObjJS, err := runtime.Encode(p.codec, currentObject)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Apply the patch.
|
|
patchedObjJS, appliedStrictErrs, err := p.applyJSPatch(currentObjJS)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Construct the resulting typed, unversioned object.
|
|
objToUpdate := p.restPatcher.New()
|
|
if err := runtime.DecodeInto(p.codec, patchedObjJS, objToUpdate); err != nil {
|
|
strictError, isStrictError := runtime.AsStrictDecodingError(err)
|
|
switch {
|
|
case !isStrictError:
|
|
// disregard any appliedStrictErrs, because it's an incomplete
|
|
// list of strict errors given that we don't know what fields were
|
|
// unknown because DecodeInto failed. Non-strict errors trump in this case.
|
|
return nil, errors.NewInvalid(schema.GroupKind{}, "", field.ErrorList{
|
|
field.Invalid(field.NewPath("patch"), string(patchedObjJS), err.Error()),
|
|
})
|
|
case p.validationDirective == metav1.FieldValidationWarn:
|
|
addStrictDecodingWarnings(requestContext, append(appliedStrictErrs, strictError.Errors()...))
|
|
default:
|
|
strictDecodingError := runtime.NewStrictDecodingError(append(appliedStrictErrs, strictError.Errors()...))
|
|
return nil, errors.NewInvalid(schema.GroupKind{}, "", field.ErrorList{
|
|
field.Invalid(field.NewPath("patch"), string(patchedObjJS), strictDecodingError.Error()),
|
|
})
|
|
}
|
|
} else if len(appliedStrictErrs) > 0 {
|
|
switch {
|
|
case p.validationDirective == metav1.FieldValidationWarn:
|
|
addStrictDecodingWarnings(requestContext, appliedStrictErrs)
|
|
default:
|
|
return nil, errors.NewInvalid(schema.GroupKind{}, "", field.ErrorList{
|
|
field.Invalid(field.NewPath("patch"), string(patchedObjJS), runtime.NewStrictDecodingError(appliedStrictErrs).Error()),
|
|
})
|
|
}
|
|
}
|
|
|
|
if p.options == nil {
|
|
// Provide a more informative error for the crash that would
|
|
// happen on the next line
|
|
panic("PatchOptions required but not provided")
|
|
}
|
|
objToUpdate = p.fieldManager.UpdateNoErrors(currentObject, objToUpdate, managerOrUserAgent(p.options.FieldManager, p.userAgent))
|
|
return objToUpdate, nil
|
|
}
|
|
|
|
func (p *jsonPatcher) createNewObject(_ context.Context) (runtime.Object, error) {
|
|
return nil, errors.NewNotFound(p.resource.GroupResource(), p.name)
|
|
}
|
|
|
|
type jsonPatchOp struct {
|
|
Op string `json:"op"`
|
|
Path string `json:"path"`
|
|
From string `json:"from"`
|
|
Value interface{} `json:"value"`
|
|
}
|
|
|
|
// applyJSPatch applies the patch. Input and output objects must both have
|
|
// the external version, since that is what the patch must have been constructed against.
|
|
func (p *jsonPatcher) applyJSPatch(versionedJS []byte) (patchedJS []byte, strictErrors []error, retErr error) {
|
|
switch p.patchType {
|
|
case types.JSONPatchType:
|
|
if p.validationDirective == metav1.FieldValidationStrict || p.validationDirective == metav1.FieldValidationWarn {
|
|
var v []jsonPatchOp
|
|
var err error
|
|
if strictErrors, err = kjson.UnmarshalStrict(p.patchBytes, &v); err != nil {
|
|
return nil, nil, errors.NewBadRequest(fmt.Sprintf("error decoding patch: %v", err))
|
|
}
|
|
for i, e := range strictErrors {
|
|
strictErrors[i] = fmt.Errorf("json patch %v", e)
|
|
}
|
|
}
|
|
|
|
patchObj, err := jsonpatch.DecodePatch(p.patchBytes)
|
|
if err != nil {
|
|
return nil, nil, errors.NewBadRequest(err.Error())
|
|
}
|
|
if len(patchObj) > maxJSONPatchOperations {
|
|
return nil, nil, errors.NewRequestEntityTooLargeError(
|
|
fmt.Sprintf("The allowed maximum operations in a JSON patch is %d, got %d",
|
|
maxJSONPatchOperations, len(patchObj)))
|
|
}
|
|
patchedJS, err := patchObj.Apply(versionedJS)
|
|
if err != nil {
|
|
return nil, nil, errors.NewGenericServerResponse(http.StatusUnprocessableEntity, "", schema.GroupResource{}, "", err.Error(), 0, false)
|
|
}
|
|
return patchedJS, strictErrors, nil
|
|
case types.MergePatchType:
|
|
if p.validationDirective == metav1.FieldValidationStrict || p.validationDirective == metav1.FieldValidationWarn {
|
|
v := map[string]interface{}{}
|
|
var err error
|
|
strictErrors, err = kjson.UnmarshalStrict(p.patchBytes, &v)
|
|
if err != nil {
|
|
return nil, nil, errors.NewBadRequest(fmt.Sprintf("error decoding patch: %v", err))
|
|
}
|
|
}
|
|
|
|
patchedJS, retErr = jsonpatch.MergePatch(versionedJS, p.patchBytes)
|
|
if retErr == jsonpatch.ErrBadJSONPatch {
|
|
return nil, nil, errors.NewBadRequest(retErr.Error())
|
|
}
|
|
return patchedJS, strictErrors, retErr
|
|
default:
|
|
// only here as a safety net - go-restful filters content-type
|
|
return nil, nil, fmt.Errorf("unknown Content-Type header for patch: %v", p.patchType)
|
|
}
|
|
}
|
|
|
|
type smpPatcher struct {
|
|
*patcher
|
|
|
|
// Schema
|
|
schemaReferenceObj runtime.Object
|
|
fieldManager *managedfields.FieldManager
|
|
}
|
|
|
|
func (p *smpPatcher) applyPatchToCurrentObject(requestContext context.Context, currentObject runtime.Object) (runtime.Object, error) {
|
|
// Since the patch is applied on versioned objects, we need to convert the
|
|
// current object to versioned representation first.
|
|
currentVersionedObject, err := p.unsafeConvertor.ConvertToVersion(currentObject, p.kind.GroupVersion())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
versionedObjToUpdate, err := p.creater.New(p.kind)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if err := strategicPatchObject(requestContext, p.defaulter, currentVersionedObject, p.patchBytes, versionedObjToUpdate, p.schemaReferenceObj, p.validationDirective); err != nil {
|
|
return nil, err
|
|
}
|
|
// Convert the object back to the hub version
|
|
newObj, err := p.unsafeConvertor.ConvertToVersion(versionedObjToUpdate, p.hubGroupVersion)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
newObj = p.fieldManager.UpdateNoErrors(currentObject, newObj, managerOrUserAgent(p.options.FieldManager, p.userAgent))
|
|
return newObj, nil
|
|
}
|
|
|
|
func (p *smpPatcher) createNewObject(_ context.Context) (runtime.Object, error) {
|
|
return nil, errors.NewNotFound(p.resource.GroupResource(), p.name)
|
|
}
|
|
|
|
type applyPatcher struct {
|
|
patch []byte
|
|
options *metav1.PatchOptions
|
|
creater runtime.ObjectCreater
|
|
kind schema.GroupVersionKind
|
|
fieldManager *managedfields.FieldManager
|
|
userAgent string
|
|
validationDirective string
|
|
}
|
|
|
|
func (p *applyPatcher) applyPatchToCurrentObject(requestContext context.Context, obj runtime.Object) (runtime.Object, error) {
|
|
force := false
|
|
if p.options.Force != nil {
|
|
force = *p.options.Force
|
|
}
|
|
if p.fieldManager == nil {
|
|
panic("FieldManager must be installed to run apply")
|
|
}
|
|
|
|
patchObj := &unstructured.Unstructured{Object: map[string]interface{}{}}
|
|
if err := yaml.Unmarshal(p.patch, &patchObj.Object); err != nil {
|
|
return nil, errors.NewBadRequest(fmt.Sprintf("error decoding YAML: %v", err))
|
|
}
|
|
|
|
obj, err := p.fieldManager.Apply(obj, patchObj, p.options.FieldManager, force)
|
|
if err != nil {
|
|
return obj, err
|
|
}
|
|
|
|
// TODO: spawn something to track deciding whether a fieldValidation=Strict
|
|
// fatal error should return before an error from the apply operation
|
|
if p.validationDirective == metav1.FieldValidationStrict || p.validationDirective == metav1.FieldValidationWarn {
|
|
if err := yaml.UnmarshalStrict(p.patch, &map[string]interface{}{}); err != nil {
|
|
if p.validationDirective == metav1.FieldValidationStrict {
|
|
return nil, errors.NewBadRequest(fmt.Sprintf("error strict decoding YAML: %v", err))
|
|
}
|
|
addStrictDecodingWarnings(requestContext, []error{err})
|
|
}
|
|
}
|
|
return obj, nil
|
|
}
|
|
|
|
func (p *applyPatcher) createNewObject(requestContext context.Context) (runtime.Object, error) {
|
|
obj, err := p.creater.New(p.kind)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to create new object: %v", err)
|
|
}
|
|
return p.applyPatchToCurrentObject(requestContext, obj)
|
|
}
|
|
|
|
// strategicPatchObject applies a strategic merge patch of `patchBytes` to
|
|
// `originalObject` and stores the result in `objToUpdate`.
|
|
// It additionally returns the map[string]interface{} representation of the
|
|
// `originalObject` and `patchBytes`.
|
|
// NOTE: Both `originalObject` and `objToUpdate` are supposed to be versioned.
|
|
func strategicPatchObject(
|
|
requestContext context.Context,
|
|
defaulter runtime.ObjectDefaulter,
|
|
originalObject runtime.Object,
|
|
patchBytes []byte,
|
|
objToUpdate runtime.Object,
|
|
schemaReferenceObj runtime.Object,
|
|
validationDirective string,
|
|
) error {
|
|
originalObjMap, err := runtime.DefaultUnstructuredConverter.ToUnstructured(originalObject)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
patchMap := make(map[string]interface{})
|
|
var strictErrs []error
|
|
if validationDirective == metav1.FieldValidationWarn || validationDirective == metav1.FieldValidationStrict {
|
|
strictErrs, err = kjson.UnmarshalStrict(patchBytes, &patchMap)
|
|
if err != nil {
|
|
return errors.NewBadRequest(err.Error())
|
|
}
|
|
} else {
|
|
if err = kjson.UnmarshalCaseSensitivePreserveInts(patchBytes, &patchMap); err != nil {
|
|
return errors.NewBadRequest(err.Error())
|
|
}
|
|
}
|
|
|
|
if err := applyPatchToObject(requestContext, defaulter, originalObjMap, patchMap, objToUpdate, schemaReferenceObj, strictErrs, validationDirective); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// applyPatch is called every time GuaranteedUpdate asks for the updated object,
|
|
// and is given the currently persisted object as input.
|
|
// TODO: rename this function because the name implies it is related to applyPatcher
|
|
func (p *patcher) applyPatch(ctx context.Context, _, currentObject runtime.Object) (objToUpdate runtime.Object, patchErr error) {
|
|
// Make sure we actually have a persisted currentObject
|
|
tracing.SpanFromContext(ctx).AddEvent("About to apply patch")
|
|
currentObjectHasUID, err := hasUID(currentObject)
|
|
if err != nil {
|
|
return nil, err
|
|
} else if !currentObjectHasUID {
|
|
objToUpdate, patchErr = p.mechanism.createNewObject(ctx)
|
|
} else {
|
|
objToUpdate, patchErr = p.mechanism.applyPatchToCurrentObject(ctx, currentObject)
|
|
}
|
|
|
|
if patchErr != nil {
|
|
return nil, patchErr
|
|
}
|
|
|
|
objToUpdateHasUID, err := hasUID(objToUpdate)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if objToUpdateHasUID && !currentObjectHasUID {
|
|
accessor, err := meta.Accessor(objToUpdate)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return nil, errors.NewConflict(p.resource.GroupResource(), p.name, fmt.Errorf("uid mismatch: the provided object specified uid %s, and no existing object was found", accessor.GetUID()))
|
|
}
|
|
|
|
// if this object supports namespace info
|
|
if objectMeta, err := meta.Accessor(objToUpdate); 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(p.namespace, p.resource), objectMeta); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
if err := checkName(objToUpdate, p.name, p.namespace, p.namer); err != nil {
|
|
return nil, err
|
|
}
|
|
return objToUpdate, nil
|
|
}
|
|
|
|
func (p *patcher) admissionAttributes(ctx context.Context, updatedObject runtime.Object, currentObject runtime.Object, operation admission.Operation, operationOptions runtime.Object) admission.Attributes {
|
|
userInfo, _ := request.UserFrom(ctx)
|
|
return admission.NewAttributesRecord(updatedObject, currentObject, p.kind, p.namespace, p.name, p.resource, p.subresource, operation, operationOptions, p.dryRun, userInfo)
|
|
}
|
|
|
|
// applyAdmission is called every time GuaranteedUpdate asks for the updated object,
|
|
// and is given the currently persisted object and the patched object as input.
|
|
// TODO: rename this function because the name implies it is related to applyPatcher
|
|
func (p *patcher) applyAdmission(ctx context.Context, patchedObject runtime.Object, currentObject runtime.Object) (runtime.Object, error) {
|
|
tracing.SpanFromContext(ctx).AddEvent("About to check admission control")
|
|
var operation admission.Operation
|
|
var options runtime.Object
|
|
if hasUID, err := hasUID(currentObject); err != nil {
|
|
return nil, err
|
|
} else if !hasUID {
|
|
operation = admission.Create
|
|
currentObject = nil
|
|
options = patchToCreateOptions(p.options)
|
|
} else {
|
|
operation = admission.Update
|
|
options = patchToUpdateOptions(p.options)
|
|
}
|
|
if p.admissionCheck != nil && p.admissionCheck.Handles(operation) {
|
|
attributes := p.admissionAttributes(ctx, patchedObject, currentObject, operation, options)
|
|
return patchedObject, p.admissionCheck.Admit(ctx, attributes, p.objectInterfaces)
|
|
}
|
|
return patchedObject, nil
|
|
}
|
|
|
|
// patchResource divides PatchResource for easier unit testing
|
|
func (p *patcher) patchResource(ctx context.Context, scope *RequestScope) (runtime.Object, bool, error) {
|
|
p.namespace = request.NamespaceValue(ctx)
|
|
switch p.patchType {
|
|
case types.JSONPatchType, types.MergePatchType:
|
|
p.mechanism = &jsonPatcher{
|
|
patcher: p,
|
|
fieldManager: scope.FieldManager,
|
|
}
|
|
case types.StrategicMergePatchType:
|
|
schemaReferenceObj, err := p.unsafeConvertor.ConvertToVersion(p.restPatcher.New(), p.kind.GroupVersion())
|
|
if err != nil {
|
|
return nil, false, err
|
|
}
|
|
p.mechanism = &smpPatcher{
|
|
patcher: p,
|
|
schemaReferenceObj: schemaReferenceObj,
|
|
fieldManager: scope.FieldManager,
|
|
}
|
|
// this case is unreachable if ServerSideApply is not enabled because we will have already rejected the content type
|
|
case types.ApplyPatchType:
|
|
p.mechanism = &applyPatcher{
|
|
fieldManager: scope.FieldManager,
|
|
patch: p.patchBytes,
|
|
options: p.options,
|
|
creater: p.creater,
|
|
kind: p.kind,
|
|
userAgent: p.userAgent,
|
|
validationDirective: p.validationDirective,
|
|
}
|
|
p.forceAllowCreate = true
|
|
default:
|
|
return nil, false, fmt.Errorf("%v: unimplemented patch type", p.patchType)
|
|
}
|
|
dedupOwnerReferencesTransformer := func(_ context.Context, obj, _ runtime.Object) (runtime.Object, error) {
|
|
// Dedup owner references after mutating admission happens
|
|
dedupOwnerReferencesAndAddWarning(obj, ctx, true)
|
|
return obj, nil
|
|
}
|
|
|
|
transformers := []rest.TransformFunc{p.applyPatch, p.applyAdmission, dedupOwnerReferencesTransformer}
|
|
|
|
wasCreated := false
|
|
p.updatedObjectInfo = rest.DefaultUpdatedObjectInfo(nil, transformers...)
|
|
requestFunc := func() (runtime.Object, error) {
|
|
// Pass in UpdateOptions to override UpdateStrategy.AllowUpdateOnCreate
|
|
options := patchToUpdateOptions(p.options)
|
|
updateObject, created, updateErr := p.restPatcher.Update(ctx, p.name, p.updatedObjectInfo, p.createValidation, p.updateValidation, p.forceAllowCreate, options)
|
|
wasCreated = created
|
|
return updateObject, updateErr
|
|
}
|
|
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) && p.patchType != types.ApplyPatchType {
|
|
if _, accessorErr := meta.Accessor(p.restPatcher.New()); accessorErr == nil {
|
|
p.updatedObjectInfo = rest.DefaultUpdatedObjectInfo(nil,
|
|
p.applyPatch,
|
|
p.applyAdmission,
|
|
dedupOwnerReferencesTransformer,
|
|
func(_ context.Context, obj, _ runtime.Object) (runtime.Object, error) {
|
|
accessor, _ := meta.Accessor(obj)
|
|
accessor.SetManagedFields(nil)
|
|
return obj, nil
|
|
})
|
|
result, err = requestFunc()
|
|
}
|
|
}
|
|
return result, err
|
|
})
|
|
return result, wasCreated, err
|
|
}
|
|
|
|
// applyPatchToObject applies a strategic merge patch of <patchMap> to
|
|
// <originalMap> and stores the result in <objToUpdate>.
|
|
// NOTE: <objToUpdate> must be a versioned object.
|
|
func applyPatchToObject(
|
|
requestContext context.Context,
|
|
defaulter runtime.ObjectDefaulter,
|
|
originalMap map[string]interface{},
|
|
patchMap map[string]interface{},
|
|
objToUpdate runtime.Object,
|
|
schemaReferenceObj runtime.Object,
|
|
strictErrs []error,
|
|
validationDirective string,
|
|
) error {
|
|
patchedObjMap, err := strategicpatch.StrategicMergeMapPatch(originalMap, patchMap, schemaReferenceObj)
|
|
if err != nil {
|
|
return interpretStrategicMergePatchError(err)
|
|
}
|
|
|
|
// Rather than serialize the patched map to JSON, then decode it to an object, we go directly from a map to an object
|
|
converter := runtime.DefaultUnstructuredConverter
|
|
returnUnknownFields := validationDirective == metav1.FieldValidationWarn || validationDirective == metav1.FieldValidationStrict
|
|
if err := converter.FromUnstructuredWithValidation(patchedObjMap, objToUpdate, returnUnknownFields); err != nil {
|
|
strictError, isStrictError := runtime.AsStrictDecodingError(err)
|
|
switch {
|
|
case !isStrictError:
|
|
// disregard any sttrictErrs, because it's an incomplete
|
|
// list of strict errors given that we don't know what fields were
|
|
// unknown because StrategicMergeMapPatch failed.
|
|
// Non-strict errors trump in this case.
|
|
return errors.NewInvalid(schema.GroupKind{}, "", field.ErrorList{
|
|
field.Invalid(field.NewPath("patch"), fmt.Sprintf("%+v", patchMap), err.Error()),
|
|
})
|
|
case validationDirective == metav1.FieldValidationWarn:
|
|
addStrictDecodingWarnings(requestContext, append(strictErrs, strictError.Errors()...))
|
|
default:
|
|
strictDecodingError := runtime.NewStrictDecodingError(append(strictErrs, strictError.Errors()...))
|
|
return errors.NewInvalid(schema.GroupKind{}, "", field.ErrorList{
|
|
field.Invalid(field.NewPath("patch"), fmt.Sprintf("%+v", patchMap), strictDecodingError.Error()),
|
|
})
|
|
}
|
|
} else if len(strictErrs) > 0 {
|
|
switch {
|
|
case validationDirective == metav1.FieldValidationWarn:
|
|
addStrictDecodingWarnings(requestContext, strictErrs)
|
|
default:
|
|
return errors.NewInvalid(schema.GroupKind{}, "", field.ErrorList{
|
|
field.Invalid(field.NewPath("patch"), fmt.Sprintf("%+v", patchMap), runtime.NewStrictDecodingError(strictErrs).Error()),
|
|
})
|
|
}
|
|
}
|
|
|
|
// Decoding from JSON to a versioned object would apply defaults, so we do the same here
|
|
defaulter.Default(objToUpdate)
|
|
|
|
return nil
|
|
}
|
|
|
|
// interpretStrategicMergePatchError interprets the error type and returns an error with appropriate HTTP code.
|
|
func interpretStrategicMergePatchError(err error) error {
|
|
switch err {
|
|
case mergepatch.ErrBadJSONDoc, mergepatch.ErrBadPatchFormatForPrimitiveList, mergepatch.ErrBadPatchFormatForRetainKeys, mergepatch.ErrBadPatchFormatForSetElementOrderList, mergepatch.ErrUnsupportedStrategicMergePatchFormat:
|
|
return errors.NewBadRequest(err.Error())
|
|
case mergepatch.ErrNoListOfLists, mergepatch.ErrPatchContentNotMatchRetainKeys:
|
|
return errors.NewGenericServerResponse(http.StatusUnprocessableEntity, "", schema.GroupResource{}, "", err.Error(), 0, false)
|
|
default:
|
|
return err
|
|
}
|
|
}
|
|
|
|
// patchToUpdateOptions creates an UpdateOptions with the same field values as the provided PatchOptions.
|
|
func patchToUpdateOptions(po *metav1.PatchOptions) *metav1.UpdateOptions {
|
|
if po == nil {
|
|
return nil
|
|
}
|
|
uo := &metav1.UpdateOptions{
|
|
DryRun: po.DryRun,
|
|
FieldManager: po.FieldManager,
|
|
FieldValidation: po.FieldValidation,
|
|
}
|
|
uo.TypeMeta.SetGroupVersionKind(metav1.SchemeGroupVersion.WithKind("UpdateOptions"))
|
|
return uo
|
|
}
|
|
|
|
// patchToCreateOptions creates an CreateOptions with the same field values as the provided PatchOptions.
|
|
func patchToCreateOptions(po *metav1.PatchOptions) *metav1.CreateOptions {
|
|
if po == nil {
|
|
return nil
|
|
}
|
|
co := &metav1.CreateOptions{
|
|
DryRun: po.DryRun,
|
|
FieldManager: po.FieldManager,
|
|
FieldValidation: po.FieldValidation,
|
|
}
|
|
co.TypeMeta.SetGroupVersionKind(metav1.SchemeGroupVersion.WithKind("CreateOptions"))
|
|
return co
|
|
}
|