feat: add/expose cli flags (#771)

* feat: add/expose cli flags

Signed-off-by: Hans Song <hans.m.song@gmail.com>

* fix tests

Signed-off-by: Hans Song <hans.m.song@gmail.com>

* remove skipdeps from subcommand options

Signed-off-by: Hans Song <hans.m.song@gmail.com>

* remove skip-deps from subcommand flags

Signed-off-by: Hans Song <hans.m.song@gmail.com>

* remove SkipDeps from subcommand implementations

Signed-off-by: Hans Song <hans.m.song@gmail.com>

* update doco with new flags

Signed-off-by: Hans Song <hans.m.song@gmail.com>

---------

Signed-off-by: Hans Song <hans.m.song@gmail.com>

pkg/helmexec/exec.go

@@ -28,9 +28,14 @@ type decryptedSecret struct {
 	err   error
 }
 
+type HelmExecOptions struct {
+	EnableLiveOutput   bool
+	DisableForceUpdate bool
+}
+
 type execer struct {
 	helmBinary           string
-	enableLiveOutput     bool
+	options              HelmExecOptions
 	version              *semver.Version
 	runner               Runner
 	logger               *zap.SugaredLogger
@@ -110,7 +115,7 @@ func redactedURL(chart string) string {
 }
 
 // New for running helm commands
-func New(helmBinary string, enableLiveOutput bool, logger *zap.SugaredLogger, kubeContext string, runner Runner) *execer {
+func New(helmBinary string, options HelmExecOptions, logger *zap.SugaredLogger, kubeContext string, runner Runner) *execer {
 	// TODO: proper error handling
 	version, err := GetHelmVersion(helmBinary, runner)
 	if err != nil {
@@ -118,7 +123,7 @@ func New(helmBinary string, enableLiveOutput bool, logger *zap.SugaredLogger, ku
 	}
 	return &execer{
 		helmBinary:       helmBinary,
-		enableLiveOutput: enableLiveOutput,
+		options:          options,
 		version:          version,
 		logger:           logger,
 		kubeContext:      kubeContext,
@@ -136,7 +141,11 @@ func (helm *execer) SetHelmBinary(bin string) {
 }
 
 func (helm *execer) SetEnableLiveOutput(enableLiveOutput bool) {
-	helm.enableLiveOutput = enableLiveOutput
+	helm.options.EnableLiveOutput = enableLiveOutput
+}
+
+func (helm *execer) SetDisableForceUpdate(forceUpdate bool) {
+	helm.options.DisableForceUpdate = forceUpdate
 }
 
 func (helm *execer) AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string, skipTLSVerify string) error {
@@ -156,7 +165,7 @@ func (helm *execer) AddRepo(name, repository, cafile, certfile, keyfile, usernam
 
 		// See https://github.com/helm/helm/pull/8777
 		if cons, err := semver.NewConstraint(">= 3.3.2"); err == nil {
-			if cons.Check(helm.version) {
+			if !helm.options.DisableForceUpdate && cons.Check(helm.version) {
 				args = append(args, "--force-update")
 			}
 		} else {
@@ -525,7 +534,7 @@ func (helm *execer) exec(args []string, env map[string]string, overrideEnableLiv
 	}
 	cmd := fmt.Sprintf("exec: %s %s", helm.helmBinary, strings.Join(cmdargs, " "))
 	helm.logger.Debug(cmd)
-	enableLiveOutput := helm.enableLiveOutput
+	enableLiveOutput := helm.options.EnableLiveOutput
 	if overrideEnableLiveOutput != nil {
 		enableLiveOutput = *overrideEnableLiveOutput
 	}