This adds the ability to silence oc on successful logins to prevent l…

…arge clusters from being annoying.

For BZ 1542326

pkg/oc/cli/cmd/login/login.go

@@ -92,6 +92,7 @@ func NewCmdLogin(fullName string, f *osclientcmd.Factory, reader io.Reader, out,
 	// Login is the only command that can negotiate a session token against the auth server using basic auth
 	cmds.Flags().StringVarP(&options.Username, "username", "u", "", "Username, will prompt if not provided")
 	cmds.Flags().StringVarP(&options.Password, "password", "p", "", "Password, will prompt if not provided")
+	cmds.Flags().BoolVarP(&options.Silent, "silent", "s", false, "If true, projects you have access to will not be listed on successful login.")
 
 	return cmds
 }
@@ -152,6 +153,8 @@ func (o *LoginOptions) Complete(f *osclientcmd.Factory, cmd *cobra.Command, args
 	o.InsecureTLS = kcmdutil.GetFlagBool(cmd, "insecure-skip-tls-verify")
 	o.Token = kcmdutil.GetFlagString(cmd, "token")
 
+	o.Silent = kcmdutil.GetFlagBool(cmd, "silent")	
+
 	o.DefaultNamespace, _, _ = f.DefaultNamespace()
 
 	o.PathOptions = config.NewPathOptions(cmd)

pkg/oc/cli/cmd/login/loginoptions.go

@@ -68,6 +68,9 @@ type LoginOptions struct {
 
 	CommandName    string
 	RequestTimeout time.Duration
+
+	// Silent login
+	Silent bool
 }
 
 // Gather all required information in a comprehensive order.
@@ -316,16 +319,17 @@ func (o *LoginOptions) gatherProjectInfo() error {
 			return err
 		}
 		o.Project = current.Name
-
-		fmt.Fprintf(o.Out, "You have access to the following projects and can switch between them with '%s project <projectname>':\n\n", o.CommandName)
-		for _, p := range projects.List() {
-			if o.Project == p {
-				fmt.Fprintf(o.Out, "  * %s\n", p)
-			} else {
-				fmt.Fprintf(o.Out, "    %s\n", p)
+		if (!o.silentLogin()) {
+			fmt.Fprintf(o.Out, "You have access to the following projects and can switch between them with '%s project <projectname>':\n\n", o.CommandName)
+			for _, p := range projects.List() {
+				if o.Project == p {
+					fmt.Fprintf(o.Out, "  * %s\n", p)
+				} else {
+					fmt.Fprintf(o.Out, "    %s\n", p)
+				}
 			}
+			fmt.Fprintln(o.Out)
 		}
-		fmt.Fprintln(o.Out)
 		fmt.Fprintf(o.Out, "Using project %q.\n", o.Project)
 	}
 
@@ -405,3 +409,8 @@ func (o *LoginOptions) serverProvided() bool {
 func (o *LoginOptions) tokenProvided() bool {
 	return len(o.Token) > 0
 }
+
+func (o *LoginOptions) silentLogin() bool {
+        return o.Silent
+}
+