Fix Lint warnings: Missing comments for functions

* Added comments wherever missing for exported functions/constants

Change-Id: I7d0b79b5f56fc6c3edb60a3b58c0962ebd76314c
Relates-To: #148

cmd/baremetal/baremetal.go

@@ -72,8 +72,8 @@ func NewBaremetalCommand(rootSettings *environment.AirshipCTLSettings) *cobra.Co
 	return baremetalRootCmd
 }
 
-// getHostSelections builds a list of selectors that can be passed to a manager using the name and label flags passed to
+// GetHostSelections builds a list of selectors that can be passed to a manager
-// airshipctl.
+// using the name and label flags passed to airshipctl.
 func GetHostSelections(name string, labels string) []remote.HostSelector {
 	var selectors []remote.HostSelector
 	if name != "" {

pkg/config/config.go

@@ -780,7 +780,7 @@ func (c *Config) ModifyAuthInfo(authinfo *AuthInfo, theAuthInfo *AuthInfoOptions
 	}
 }
 
-// ImportFromKubeconfig absorbs the clusters, contexts and credentials from the
+// ImportFromKubeConfig absorbs the clusters, contexts and credentials from the
 // given kubeConfig
 func (c *Config) ImportFromKubeConfig(kubeConfigPath string) error {
 	_, err := os.Stat(kubeConfigPath)

pkg/config/options.go

@@ -55,9 +55,6 @@ type ClusterOptions struct {
 	EmbedCAData           bool
 }
 
-// Validate checks for the possible authentication values and returns
-// Error when invalid value or incompatible choice of values given
-
 // TODO(howell): The following functions are tightly coupled with flags passed
 // on the command line. We should find a way to remove this coupling, since it
 // is possible to create (and validate) these objects without using the command
@@ -65,6 +62,8 @@ type ClusterOptions struct {
 
 // TODO(howell): strongly type the errors in this file
 
+// Validate checks for the possible authentication values and returns
+// Error when invalid value or incompatible choice of values given
 func (o *AuthInfoOptions) Validate() error {
 	// TODO(howell): This prevents a user of airshipctl from creating a
 	// credential with both a bearer-token and a user/password, but it does

pkg/document/plugin/templater/v1alpha1/templater.go

@@ -11,6 +11,7 @@
  See the License for the specific language governing permissions and
  limitations under the License.
 */
+
 package v1alpha1
 
 import (

pkg/document/repo/adapter.go

@@ -42,6 +42,7 @@ type GitDriver struct {
 	Storer     storage.Storer
 }
 
+// NewGitDriver returns GitDriver with given storer and Filesystem
 func NewGitDriver(fs billy.Filesystem, s storage.Storer) Adapter {
 	return &GitDriver{Storer: s, Filesystem: fs}
 }
@@ -56,6 +57,7 @@ func (g *GitDriver) Open() error {
 	return nil
 }
 
+// IsOpen returns true if repository is already cloned
 func (g *GitDriver) IsOpen() bool {
 	if g.Repository == nil {
 		return false
@@ -78,10 +80,12 @@ func (g *GitDriver) Clone(co *git.CloneOptions) error {
 	return nil
 }
 
+// SetFilesystem updates given Filesystem in GitDriver.Filesystem
 func (g *GitDriver) SetFilesystem(fs billy.Filesystem) {
 	g.Filesystem = fs
 }
 
+// SetStorer updates given Storer in GitDriver.Filesystem
 func (g *GitDriver) SetStorer(s storage.Storer) {
 	g.Storer = s
 }

pkg/document/repo/repo.go

@@ -31,11 +31,15 @@ import (
 	"opendev.org/airship/airshipctl/pkg/util"
 )
 
+//TODO(sy495p): Switch to strongly-typed errors in this file
+
+// variables for repository errors
 var (
 	ErrNoOpenRepo   = errors.New("no open repository is stored")
 	ErrCantParseURL = errors.New("could not get target directory from url")
 )
 
+// OptionsBuilder interface provides specification for a repository implementation
 type OptionsBuilder interface {
 	ToAuth() (transport.AuthMethod, error)
 	ToCloneOptions(auth transport.AuthMethod) *git.CloneOptions

pkg/environment/constants.go

@@ -14,4 +14,5 @@
 
 package environment
 
+// HomeEnvVar holds value of HOME directory from env
 const HomeEnvVar = "$HOME"

pkg/k8s/kubectl/interfaces.go

@@ -18,6 +18,10 @@ import (
 	"opendev.org/airship/airshipctl/pkg/document"
 )
 
+//TODO(sy495p): type name "Interface" is too generic. Use a more specific name
+
+// Interface provides a abstraction layer built on top of kubectl libraries
+// to implement kubectl subcommands as kubectl apply
 type Interface interface {
 	Apply(docs []document.Document, ao *ApplyOptions) error
 	ApplyOptions() (*ApplyOptions, error)

testutil/testconfig.go

@@ -235,6 +235,7 @@ func DummyAuthInfoOptions() *config.AuthInfoOptions {
 	return authinfo
 }
 
+// DummyBootstrapInfo creates a dummy BootstrapInfo config object for unit testing
 func DummyBootstrapInfo() *config.Bootstrap {
 	bs := &config.Bootstrap{}
 	cont := config.Container{