This commit prevents NewConfig from returning errors

Prior to this commit, NewConfig was setting up a new Config object and
filling it with a new kubeconfig object. The process for creating a
kubeconfig object has the potential to return an error. This commit
removes the creation of that object from NewConfig, delegating creation
of kubeconfig objects to more appropriate functions, such as LoadConfig.

Change-Id: I57a040f2e76bbc003eb82171f382e80425b37870

pkg/config/config.go

@@ -37,7 +37,6 @@ import (
 
 // Called from root to Load the initial configuration
 func (c *Config) LoadConfig(configFileArg string, kPathOptions *clientcmd.PathOptions) error {
-
 	err := c.loadFromAirConfig(configFileArg)
 	if err != nil {
 		return err
@@ -49,9 +48,8 @@ func (c *Config) LoadConfig(configFileArg string, kPathOptions *clientcmd.PathOp
 		return err
 	}
 
-	// Lets navigate through the kConfig to populate the references in airship config
+	// Lets navigate through the kubeconfig to populate the references in airship config
 	return c.reconcileConfig()
-
 }
 
 func (c *Config) loadFromAirConfig(configFileArg string) error {

pkg/config/test_utils.go

@@ -37,18 +37,28 @@ const (
 
 // DummyConfig used by tests, to initialize min set of data
 func DummyConfig() *Config {
-	conf := NewConfig()
-	// Make sure the .airship directory is created
-	//conf.ConfigFilePath()
-	conf.Clusters["dummy_cluster"] = DummyClusterPurpose()
-	conf.KubeConfig().Clusters["dummycluster_target"] = conf.Clusters["dummy_cluster"].ClusterTypes[Target].KubeCluster()
-	conf.KubeConfig().Clusters["dummycluster_ephemeral"] =
-		conf.Clusters["dummy_cluster"].ClusterTypes[Ephemeral].KubeCluster()
-	conf.AuthInfos["dummy_user"] = DummyAuthInfo()
-	conf.Contexts["dummy_context"] = DummyContext()
-	conf.Manifests["dummy_manifest"] = DummyManifest()
-	conf.ModulesConfig = DummyModules()
-	conf.CurrentContext = "dummy_context"
+	conf := &Config{
+		Kind:       AirshipConfigKind,
+		APIVersion: AirshipConfigApiVersion,
+		Clusters: map[string]*ClusterPurpose{
+			"dummy_cluster": DummyClusterPurpose(),
+		},
+		AuthInfos: map[string]*AuthInfo{
+			"dummy_user": DummyAuthInfo(),
+		},
+		Contexts: map[string]*Context{
+			"dummy_context": DummyContext(),
+		},
+		Manifests: map[string]*Manifest{
+			"dummy_manifest": DummyManifest(),
+		},
+		ModulesConfig:  DummyModules(),
+		CurrentContext: "dummy_context",
+		kubeConfig:     kubeconfig.NewConfig(),
+	}
+	dummyCluster := conf.Clusters["dummy_cluster"]
+	conf.KubeConfig().Clusters["dummycluster_target"] = dummyCluster.ClusterTypes[Target].KubeCluster()
+	conf.KubeConfig().Clusters["dummycluster_ephemeral"] = dummyCluster.ClusterTypes[Ephemeral].KubeCluster()
 	return conf
 }
 
@@ -111,10 +121,13 @@ func DummyClusterPurpose() *ClusterPurpose {
 
 func InitConfigAt(t *testing.T, airConfigFile, kConfigFile string) *Config {
 	conf := NewConfig()
+
 	kubePathOptions := clientcmd.NewDefaultPathOptions()
 	kubePathOptions.GlobalFile = kConfigFile
+
 	err := conf.LoadConfig(airConfigFile, kubePathOptions)
 	require.NoError(t, err)
+
 	return conf
 }
 func InitConfig(t *testing.T) *Config {

pkg/config/utils.go

@@ -16,30 +16,17 @@ limitations under the License.
 
 package config
 
-import (
-	"path/filepath"
-
-	"k8s.io/client-go/tools/clientcmd"
-)
-
-// NewConfig is a convenience function that returns a new Config
-// object with non-nill maps
+// NewConfig returns a newly initialized Config object
 func NewConfig() *Config {
-	conf := &Config{
-		Clusters:  make(map[string]*ClusterPurpose),
-		Contexts:  make(map[string]*Context),
-		AuthInfos: make(map[string]*AuthInfo),
-		Manifests: make(map[string]*Manifest),
+	return &Config{
+		Kind:          AirshipConfigKind,
+		APIVersion:    AirshipConfigApiVersion,
+		Clusters:      make(map[string]*ClusterPurpose),
+		Contexts:      make(map[string]*Context),
+		AuthInfos:     make(map[string]*AuthInfo),
+		Manifests:     make(map[string]*Manifest),
+		ModulesConfig: NewModules(),
 	}
-	conf.ModulesConfig = NewModules()
-	conf.Kind = AirshipConfigKind
-	conf.APIVersion = AirshipConfigApiVersion
-
-	conf.loadedConfigPath = filepath.Join(AirshipConfigDir, AirshipConfig)
-	conf.loadedPathOptions = clientcmd.NewDefaultPathOptions()
-	conf.kubeConfig, _ = conf.loadedPathOptions.GetStartingConfig()
-	return conf
-
 }
 
 // NewContext is a convenience function that returns a new Context

pkg/environment/settings.go

@@ -34,12 +34,12 @@ func (a *AirshipCTLSettings) InitFlags(cmd *cobra.Command) {
 	flags.StringVar(&a.kubeConfigPath, clientcmd.RecommendedConfigPathFlag,
 		filepath.Join(HomePlaceholder, config.AirshipConfigDir, config.AirshipKubeConfig),
 		"Path to kubeconfig associated with airshipctl configuration.")
-
 }
 
 func (a *AirshipCTLSettings) Config() *config.Config {
 	return a.config
 }
+
 func (a *AirshipCTLSettings) SetConfig(conf *config.Config) {
 	a.config = conf
 }
@@ -47,30 +47,31 @@ func (a *AirshipCTLSettings) SetConfig(conf *config.Config) {
 func (a *AirshipCTLSettings) AirshipConfigPath() string {
 	return a.airshipConfigPath
 }
+
 func (a *AirshipCTLSettings) SetAirshipConfigPath(acp string) {
 	a.airshipConfigPath = acp
 }
+
 func (a *AirshipCTLSettings) KubeConfigPath() string {
 	return a.kubeConfigPath
 }
+
 func (a *AirshipCTLSettings) SetKubeConfigPath(kcp string) {
 	a.kubeConfigPath = kcp
 }
 
 // InitConfig - Initializes and loads Config it exists.
 func (a *AirshipCTLSettings) InitConfig() {
-
-	// Raw - Empty Config object
 	a.SetConfig(config.NewConfig())
 
 	a.setAirshipConfigPath()
+
 	//Pass the airshipConfigPath and kubeConfig object
 	err := a.Config().LoadConfig(a.AirshipConfigPath(), a.setKubePathOptions())
 	if err != nil {
 		// Should stop airshipctl
 		log.Fatal(err)
 	}
-
 }
 
 func (a *AirshipCTLSettings) setAirshipConfigPath() {
@@ -113,8 +114,8 @@ func (a *AirshipCTLSettings) setKubePathOptions() *clientcmd.PathOptions {
 	kubePathOptions.GlobalFileSubpath = a.kubeConfigPath
 
 	return kubePathOptions
-
 }
+
 func (a *AirshipCTLSettings) replaceHomePlaceholder(configPath string) (string, string) {
 	home, err := os.UserHomeDir()
 	if err != nil {