Merge pull request #55986 from xiangpengzhao/kubeproxy-fuzzer

Automatic merge from submit-queue. 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>.

Add kubeproxyconfig round trip test

**What this PR does / why we need it**:
This is a follow-up of https://github.com/kubernetes/kubernetes/pull/55961.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
ref: #55959

**Special notes for your reviewer**:
/cc @luxas @mtaufen @ncdc 

**Release note**:

```release-note
NONE
```

pkg/proxy/apis/kubeproxyconfig/BUILD

@@ -32,6 +32,7 @@ filegroup(
     name = "all-srcs",
     srcs = [
         ":package-srcs",
+        "//pkg/proxy/apis/kubeproxyconfig/fuzzer:all-srcs",
         "//pkg/proxy/apis/kubeproxyconfig/scheme:all-srcs",
         "//pkg/proxy/apis/kubeproxyconfig/v1alpha1:all-srcs",
         "//pkg/proxy/apis/kubeproxyconfig/validation:all-srcs",

pkg/proxy/apis/kubeproxyconfig/fuzzer/BUILD

@@ -0,0 +1,29 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["fuzzer.go"],
+    importpath = "k8s.io/kubernetes/pkg/proxy/apis/kubeproxyconfig/fuzzer",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//pkg/proxy/apis/kubeproxyconfig:go_default_library",
+        "//pkg/util/pointer:go_default_library",
+        "//vendor/github.com/google/gofuzz:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime/serializer:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

pkg/proxy/apis/kubeproxyconfig/fuzzer/fuzzer.go

@@ -0,0 +1,48 @@
+/*
+Copyright 2018 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 fuzzer
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/google/gofuzz"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtimeserializer "k8s.io/apimachinery/pkg/runtime/serializer"
+	"k8s.io/kubernetes/pkg/proxy/apis/kubeproxyconfig"
+	utilpointer "k8s.io/kubernetes/pkg/util/pointer"
+)
+
+// Funcs returns the fuzzer functions for the kube-proxy apis.
+func Funcs(codecs runtimeserializer.CodecFactory) []interface{} {
+	return []interface{}{
+		func(obj *kubeproxyconfig.KubeProxyConfiguration, c fuzz.Continue) {
+			c.FuzzNoCustom(obj)
+			obj.BindAddress = fmt.Sprintf("%d.%d.%d.%d", c.Intn(256), c.Intn(256), c.Intn(256), c.Intn(256))
+			obj.Conntrack.MaxPerCore = utilpointer.Int32Ptr(c.Int31())
+			obj.Conntrack.Min = utilpointer.Int32Ptr(c.Int31())
+			obj.Conntrack.TCPCloseWaitTimeout = &metav1.Duration{Duration: time.Duration(c.Int63()) * time.Hour}
+			obj.Conntrack.TCPEstablishedTimeout = &metav1.Duration{Duration: time.Duration(c.Int63()) * time.Hour}
+			obj.HealthzBindAddress = fmt.Sprintf("%d.%d.%d.%d:%d", c.Intn(256), c.Intn(256), c.Intn(256), c.Intn(256), c.Intn(65536))
+			obj.IPTables.MasqueradeBit = utilpointer.Int32Ptr(c.Int31())
+			obj.MetricsBindAddress = fmt.Sprintf("%d.%d.%d.%d:%d", c.Intn(256), c.Intn(256), c.Intn(256), c.Intn(256), c.Intn(65536))
+			obj.OOMScoreAdj = utilpointer.Int32Ptr(c.Int31())
+			obj.ResourceContainer = c.RandString()
+		},
+	}
+}

pkg/proxy/apis/kubeproxyconfig/scheme/BUILD

@@ -1,4 +1,4 @@
-load("@io_bazel_rules_go//go:def.bzl", "go_library")
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
 
 go_library(
     name = "go_default_library",
@@ -26,3 +26,14 @@ filegroup(
     tags = ["automanaged"],
     visibility = ["//visibility:public"],
 )
+
+go_test(
+    name = "go_default_test",
+    srcs = ["scheme_test.go"],
+    embed = [":go_default_library"],
+    importpath = "k8s.io/kubernetes/pkg/proxy/apis/kubeproxyconfig/scheme",
+    deps = [
+        "//pkg/proxy/apis/kubeproxyconfig/fuzzer:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/testing/roundtrip:go_default_library",
+    ],
+)

pkg/proxy/apis/kubeproxyconfig/scheme/scheme_test.go

@@ -0,0 +1,28 @@
+/*
+Copyright 2018 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 scheme
+
+import (
+	"testing"
+
+	"k8s.io/apimachinery/pkg/api/testing/roundtrip"
+	"k8s.io/kubernetes/pkg/proxy/apis/kubeproxyconfig/fuzzer"
+)
+
+func TestRoundTripTypes(t *testing.T) {
+	roundtrip.RoundTripTestForScheme(t, Scheme, fuzzer.Funcs)
+}