Revert "Revert "add kubeconfig types""

This reverts commit 02dbad7094.

pkg/client/clientcmd/loader_test.go

@@ -0,0 +1,182 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+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 clientcmd
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+
+	"gopkg.in/v2/yaml"
+)
+
+var (
+	testConfigAlfa = Config{
+		AuthInfos: map[string]AuthInfo{
+			"red-user": {Token: "red-token"}},
+		Clusters: map[string]Cluster{
+			"cow-cluster": {Server: "http://cow.org:8080"}},
+		Contexts: map[string]Context{
+			"federal-context": {AuthInfo: "red-user", Cluster: "cow-cluster", Namespace: "hammer-ns"}},
+	}
+	testConfigBravo = Config{
+		AuthInfos: map[string]AuthInfo{
+			"black-user": {Token: "black-token"}},
+		Clusters: map[string]Cluster{
+			"pig-cluster": {Server: "http://pig.org:8080"}},
+		Contexts: map[string]Context{
+			"queen-anne-context": {AuthInfo: "black-user", Cluster: "pig-cluster", Namespace: "saw-ns"}},
+	}
+	testConfigCharlie = Config{
+		AuthInfos: map[string]AuthInfo{
+			"green-user": {Token: "green-token"}},
+		Clusters: map[string]Cluster{
+			"horse-cluster": {Server: "http://horse.org:8080"}},
+		Contexts: map[string]Context{
+			"shaker-context": {AuthInfo: "green-user", Cluster: "horse-cluster", Namespace: "chisel-ns"}},
+	}
+	testConfigDelta = Config{
+		AuthInfos: map[string]AuthInfo{
+			"blue-user": {Token: "blue-token"}},
+		Clusters: map[string]Cluster{
+			"chicken-cluster": {Server: "http://chicken.org:8080"}},
+		Contexts: map[string]Context{
+			"gothic-context": {AuthInfo: "blue-user", Cluster: "chicken-cluster", Namespace: "plane-ns"}},
+	}
+	testConfigConflictAlfa = Config{
+		AuthInfos: map[string]AuthInfo{
+			"red-user":    {Token: "a-different-red-token"},
+			"yellow-user": {Token: "yellow-token"}},
+		Clusters: map[string]Cluster{
+			"cow-cluster":    {Server: "http://a-different-cow.org:8080", InsecureSkipTLSVerify: true},
+			"donkey-cluster": {Server: "http://donkey.org:8080", InsecureSkipTLSVerify: true}},
+		CurrentContext: "federal-context",
+	}
+)
+
+func ExampleMergingSomeWithConflict() {
+	commandLineFile, _ := ioutil.TempFile("", "")
+	defer os.Remove(commandLineFile.Name())
+	envVarFile, _ := ioutil.TempFile("", "")
+	defer os.Remove(envVarFile.Name())
+
+	WriteToFile(testConfigAlfa, commandLineFile.Name())
+	WriteToFile(testConfigConflictAlfa, envVarFile.Name())
+
+	loadingRules := ClientConfigLoadingRules{
+		CommandLinePath: commandLineFile.Name(),
+		EnvVarPath:      envVarFile.Name(),
+	}
+
+	mergedConfig, err := loadingRules.Load()
+
+	output, err := yaml.Marshal(mergedConfig)
+	if err != nil {
+		fmt.Printf("Unexpected error: %v", err)
+	}
+
+	fmt.Printf("%v", string(output))
+	// Output:
+	// preferences: {}
+	// clusters:
+	//   cow-cluster:
+	//     server: http://cow.org:8080
+	//   donkey-cluster:
+	//     server: http://donkey.org:8080
+	//     insecure-skip-tls-verify: true
+	// users:
+	//   red-user:
+	//     token: red-token
+	//   yellow-user:
+	//     token: yellow-token
+	// contexts:
+	//   federal-context:
+	//     cluster: cow-cluster
+	//     user: red-user
+	//     namespace: hammer-ns
+	// current-context: federal-context
+}
+
+func ExampleMergingEverythingNoConflicts() {
+	commandLineFile, _ := ioutil.TempFile("", "")
+	defer os.Remove(commandLineFile.Name())
+	envVarFile, _ := ioutil.TempFile("", "")
+	defer os.Remove(envVarFile.Name())
+	currentDirFile, _ := ioutil.TempFile("", "")
+	defer os.Remove(currentDirFile.Name())
+	homeDirFile, _ := ioutil.TempFile("", "")
+	defer os.Remove(homeDirFile.Name())
+
+	WriteToFile(testConfigAlfa, commandLineFile.Name())
+	WriteToFile(testConfigBravo, envVarFile.Name())
+	WriteToFile(testConfigCharlie, currentDirFile.Name())
+	WriteToFile(testConfigDelta, homeDirFile.Name())
+
+	loadingRules := ClientConfigLoadingRules{
+		CommandLinePath:      commandLineFile.Name(),
+		EnvVarPath:           envVarFile.Name(),
+		CurrentDirectoryPath: currentDirFile.Name(),
+		HomeDirectoryPath:    homeDirFile.Name(),
+	}
+
+	mergedConfig, err := loadingRules.Load()
+
+	output, err := yaml.Marshal(mergedConfig)
+	if err != nil {
+		fmt.Printf("Unexpected error: %v", err)
+	}
+
+	fmt.Printf("%v", string(output))
+	// Output:
+	// preferences: {}
+	// clusters:
+	//   chicken-cluster:
+	//     server: http://chicken.org:8080
+	//   cow-cluster:
+	//     server: http://cow.org:8080
+	//   horse-cluster:
+	//     server: http://horse.org:8080
+	//   pig-cluster:
+	//     server: http://pig.org:8080
+	// users:
+	//   black-user:
+	//     token: black-token
+	//   blue-user:
+	//     token: blue-token
+	//   green-user:
+	//     token: green-token
+	//   red-user:
+	//     token: red-token
+	// contexts:
+	//   federal-context:
+	//     cluster: cow-cluster
+	//     user: red-user
+	//     namespace: hammer-ns
+	//   gothic-context:
+	//     cluster: chicken-cluster
+	//     user: blue-user
+	//     namespace: plane-ns
+	//   queen-anne-context:
+	//     cluster: pig-cluster
+	//     user: black-user
+	//     namespace: saw-ns
+	//   shaker-context:
+	//     cluster: horse-cluster
+	//     user: green-user
+	//     namespace: chisel-ns
+	// current-context: ""
+}