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Merge pull request #54167 from deads2k/server-03-splitfiles
Automatic merge from submit-queue (batch tested with PRs 54167, 54182). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. split up large rest handling file These are nothing but exact block moves because the giant rest.go made it really hard to find anything. @kubernetes/sig-api-machinery-pr-reviews /assign sttts /assign caesarxuchao Kubernetes-commit: 6997d6c0628ed73ccdffa619b1252fc2027079a7
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/* | ||
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. | ||
*/ | ||
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package handlers | ||
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import ( | ||
"fmt" | ||
"net/http" | ||
"time" | ||
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"k8s.io/apimachinery/pkg/api/errors" | ||
"k8s.io/apimachinery/pkg/api/meta" | ||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
"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/endpoints/handlers/negotiation" | ||
"k8s.io/apiserver/pkg/endpoints/request" | ||
"k8s.io/apiserver/pkg/registry/rest" | ||
utiltrace "k8s.io/apiserver/pkg/util/trace" | ||
) | ||
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func createHandler(r rest.NamedCreater, scope RequestScope, typer runtime.ObjectTyper, admit admission.Interface, includeName bool) http.HandlerFunc { | ||
return func(w http.ResponseWriter, req *http.Request) { | ||
// For performance tracking purposes. | ||
trace := utiltrace.New("Create " + req.URL.Path) | ||
defer trace.LogIfLong(500 * time.Millisecond) | ||
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// TODO: we either want to remove timeout or document it (if we document, move timeout out of this function and declare it in api_installer) | ||
timeout := parseTimeout(req.URL.Query().Get("timeout")) | ||
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var ( | ||
namespace, name string | ||
err error | ||
) | ||
if includeName { | ||
namespace, name, err = scope.Namer.Name(req) | ||
} else { | ||
namespace, err = scope.Namer.Namespace(req) | ||
} | ||
if err != nil { | ||
scope.err(err, w, req) | ||
return | ||
} | ||
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ctx := scope.ContextFunc(req) | ||
ctx = request.WithNamespace(ctx, namespace) | ||
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gv := scope.Kind.GroupVersion() | ||
s, err := negotiation.NegotiateInputSerializer(req, scope.Serializer) | ||
if err != nil { | ||
scope.err(err, w, req) | ||
return | ||
} | ||
decoder := scope.Serializer.DecoderToVersion(s.Serializer, schema.GroupVersion{Group: gv.Group, Version: runtime.APIVersionInternal}) | ||
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body, err := readBody(req) | ||
if err != nil { | ||
scope.err(err, w, req) | ||
return | ||
} | ||
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defaultGVK := scope.Kind | ||
original := r.New() | ||
trace.Step("About to convert to expected version") | ||
obj, gvk, err := decoder.Decode(body, &defaultGVK, original) | ||
if err != nil { | ||
err = transformDecodeError(typer, err, original, gvk, body) | ||
scope.err(err, w, req) | ||
return | ||
} | ||
if gvk.GroupVersion() != gv { | ||
err = errors.NewBadRequest(fmt.Sprintf("the API version in the data (%s) does not match the expected API version (%v)", gvk.GroupVersion().String(), gv.String())) | ||
scope.err(err, w, req) | ||
return | ||
} | ||
trace.Step("Conversion done") | ||
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ae := request.AuditEventFrom(ctx) | ||
audit.LogRequestObject(ae, obj, scope.Resource, scope.Subresource, scope.Serializer) | ||
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if admit != nil && admit.Handles(admission.Create) { | ||
userInfo, _ := request.UserFrom(ctx) | ||
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err = admit.Admit(admission.NewAttributesRecord(obj, nil, scope.Kind, namespace, name, scope.Resource, scope.Subresource, admission.Create, userInfo)) | ||
if err != nil { | ||
scope.err(err, w, req) | ||
return | ||
} | ||
} | ||
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// TODO: replace with content type negotiation? | ||
includeUninitialized := req.URL.Query().Get("includeUninitialized") == "1" | ||
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trace.Step("About to store object in database") | ||
result, err := finishRequest(timeout, func() (runtime.Object, error) { | ||
return r.Create(ctx, name, obj, includeUninitialized) | ||
}) | ||
if err != nil { | ||
scope.err(err, w, req) | ||
return | ||
} | ||
trace.Step("Object stored in database") | ||
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requestInfo, ok := request.RequestInfoFrom(ctx) | ||
if !ok { | ||
scope.err(fmt.Errorf("missing requestInfo"), w, req) | ||
return | ||
} | ||
if err := setSelfLink(result, requestInfo, scope.Namer); err != nil { | ||
scope.err(err, w, req) | ||
return | ||
} | ||
trace.Step("Self-link added") | ||
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// If the object is partially initialized, always indicate it via StatusAccepted | ||
code := http.StatusCreated | ||
if accessor, err := meta.Accessor(result); err == nil { | ||
if accessor.GetInitializers() != nil { | ||
code = http.StatusAccepted | ||
} | ||
} | ||
status, ok := result.(*metav1.Status) | ||
if ok && err == nil && status.Code == 0 { | ||
status.Code = int32(code) | ||
} | ||
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transformResponseObject(ctx, scope, req, w, code, result) | ||
} | ||
} | ||
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// CreateNamedResource returns a function that will handle a resource creation with name. | ||
func CreateNamedResource(r rest.NamedCreater, scope RequestScope, typer runtime.ObjectTyper, admit admission.Interface) http.HandlerFunc { | ||
return createHandler(r, scope, typer, admit, true) | ||
} | ||
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// CreateResource returns a function that will handle a resource creation. | ||
func CreateResource(r rest.Creater, scope RequestScope, typer runtime.ObjectTyper, admit admission.Interface) http.HandlerFunc { | ||
return createHandler(&namedCreaterAdapter{r}, scope, typer, admit, false) | ||
} | ||
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type namedCreaterAdapter struct { | ||
rest.Creater | ||
} | ||
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func (c *namedCreaterAdapter) Create(ctx request.Context, name string, obj runtime.Object, includeUninitialized bool) (runtime.Object, error) { | ||
return c.Creater.Create(ctx, obj, includeUninitialized) | ||
} |
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