adopt Kubernetes's API tooling to automatically generate

Gopkg.toml

@@ -4,6 +4,8 @@ required = [
   "github.com/jteeuwen/go-bindata/go-bindata",
   "github.com/golang/dep/cmd/dep",
   "github.com/golang/lint/golint",
+  "k8s.io/code-generator/cmd/defaulter-gen",
+  "k8s.io/code-generator/cmd/deepcopy-gen",
 ]
 
 # prune out unused content from vendor
@@ -12,7 +14,10 @@ required = [
   non-go = true
   unused-packages = true
 
-# overrides for dev-time dependencies 
+# Don't prune helper scripts from code-generator
+ [[prune.project]]
+   name = "k8s.io/code-generator"
+   unused-packages = false
 
 [[override]]
   name = "github.com/jteeuwen/go-bindata"
@@ -42,7 +47,11 @@ required = [
   name = "github.com/spf13/cobra"
   version = "0.0.3"
 
-
 [[constraint]]
   branch = "master"
   name = "k8s.io/apimachinery"
+
+[[constraint]]
+ name = "k8s.io/code-generator"
+ branch = "release-1.11"
+

boilerplate.go.txt

@@ -0,0 +1,15 @@
+/*
+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.
+*/

cmd/kind/create/create.go

@@ -22,8 +22,8 @@ import (
 	"github.com/spf13/cobra"
 
 	"sigs.k8s.io/kind/pkg/cluster"
-	"sigs.k8s.io/kind/pkg/cluster/config"
 	"sigs.k8s.io/kind/pkg/cluster/config/encoding"
+	"sigs.k8s.io/kind/pkg/util"
 )
 
 type flags struct {
@@ -61,7 +61,7 @@ func run(flags *flags, cmd *cobra.Command, args []string) {
 	err = cfg.Validate()
 	if err != nil {
 		log.Error("Invalid configuration!")
-		configErrors := err.(*config.Errors)
+		configErrors := err.(*util.Errors)
 		for _, problem := range configErrors.Errors() {
 			log.Error(problem)
 		}

hack/update-generated.sh

@@ -24,9 +24,15 @@ REPO_ROOT=$(git rev-parse --show-toplevel)
 OUTPUT_GOBIN="${REPO_ROOT}/_output/bin"
 cd "${REPO_ROOT}"
 GOBIN="${OUTPUT_GOBIN}" go install ./vendor/github.com/jteeuwen/go-bindata/go-bindata
+GOBIN="${OUTPUT_GOBIN}" go install ./vendor/k8s.io/code-generator/cmd/defaulter-gen
+GOBIN="${OUTPUT_GOBIN}" go install ./vendor/k8s.io/code-generator/cmd/deepcopy-gen
 
 # go generate (using go-bindata)
 # NOTE: go will only take package paths, not absolute directories
-PATH="${OUTPUT_GOBIN}:${PATH}" go generate ./...
+export PATH="${OUTPUT_GOBIN}:${PATH}"
+go generate ./...
+deepcopy-gen -i ./pkg/cluster/config/ -O zz_generated.deepcopy --go-header-file boilerplate.go.txt
+defaulter-gen -i ./pkg/cluster/config -O zz_generated.default --go-header-file boilerplate.go.txt
+
 # gofmt the tree
 find . -path "./vendor" -prune -o -name "*.go" -type f -print0 | xargs -0 gofmt -s -w