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

pkg/endpoints/handlers/BUILD

@@ -37,12 +37,16 @@ go_test(
 go_library(
     name = "go_default_library",
     srcs = [
+        "create.go",
+        "delete.go",
         "doc.go",
+        "get.go",
         "namer.go",
         "patch.go",
         "proxy.go",
         "response.go",
         "rest.go",
+        "update.go",
         "watch.go",
     ],
     importpath = "k8s.io/apiserver/pkg/endpoints/handlers",

pkg/endpoints/handlers/create.go

@@ -0,0 +1,162 @@
+/*
+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 (
+	"fmt"
+	"net/http"
+	"time"
+
+	"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"
+)
+
+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)
+
+		// 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"))
+
+		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
+		}
+
+		ctx := scope.ContextFunc(req)
+		ctx = request.WithNamespace(ctx, namespace)
+
+		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})
+
+		body, err := readBody(req)
+		if err != nil {
+			scope.err(err, w, req)
+			return
+		}
+
+		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")
+
+		ae := request.AuditEventFrom(ctx)
+		audit.LogRequestObject(ae, obj, scope.Resource, scope.Subresource, scope.Serializer)
+
+		if admit != nil && admit.Handles(admission.Create) {
+			userInfo, _ := request.UserFrom(ctx)
+
+			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
+			}
+		}
+
+		// TODO: replace with content type negotiation?
+		includeUninitialized := req.URL.Query().Get("includeUninitialized") == "1"
+
+		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")
+
+		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")
+
+		// 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)
+		}
+
+		transformResponseObject(ctx, scope, req, w, code, result)
+	}
+}
+
+// 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)
+}
+
+// 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)
+}
+
+type namedCreaterAdapter struct {
+	rest.Creater
+}
+
+func (c *namedCreaterAdapter) Create(ctx request.Context, name string, obj runtime.Object, includeUninitialized bool) (runtime.Object, error) {
+	return c.Creater.Create(ctx, obj, includeUninitialized)
+}