Added host orchestrator endpoint for cvd restart

Author: SuperStrongDinosaur

frontend/src/host_orchestrator/orchestrator/controller.go

@@ -88,6 +88,8 @@ func (c *Controller) AddRoutes(router *mux.Router) {
 		httpHandler(newExecCVDInstanceCommandHandler(c.Config, c.OperationManager, &powerwashCvdCommand{}))).Methods("POST")
 	router.Handle("/cvds/{group}/{name}/:powerbtn",
 		httpHandler(newExecCVDInstanceCommandHandler(c.Config, c.OperationManager, &powerbtnCvdCommand{}))).Methods("POST")
+	router.Handle("/cvds/{group}/{name}/:restart",
+		httpHandler(newExecCVDInstanceCommandHandler(c.Config, c.OperationManager, &restartCvdCommand{}))).Methods("POST")
 	router.Handle("/cvds/{group}/{name}/:start_screen_recording",
 		httpHandler(newExecCVDInstanceCommandHandler(c.Config, c.OperationManager, &startScreenRecordingCvdCommand{}))).Methods("POST")
 	router.Handle("/cvds/{group}/{name}/:stop_screen_recording",

frontend/src/host_orchestrator/orchestrator/cvd/cvd.go

@@ -439,6 +439,13 @@ func (i *Instance) PowerWash() error {
 	return err
 }
 
+func (i *Instance) Restart() error {
+	args := i.selectorArgs()
+	args = append(args, "restart")
+	_, err := i.cli.exec(CVDBin, args...)
+	return err
+}
+
 func (i *Instance) Resume() error {
 	args := i.selectorArgs()
 	args = append(args, "resume")

frontend/src/host_orchestrator/orchestrator/execcvdcommandaction.go

@@ -96,6 +96,12 @@ func (a *powerbtnCvdCommand) exec(cvd *cvd.CLI, sel cvd.InstanceSelector) error
 	return cvd.LazySelectInstance(sel).PowerBtn()
 }
 
+type restartCvdCommand struct{}
+
+func (a *restartCvdCommand) exec(cvd *cvd.CLI, sel cvd.InstanceSelector) error {
+	return cvd.LazySelectInstance(sel).Restart()
+}
+
 type startScreenRecordingCvdCommand struct{}
 
 func (a *startScreenRecordingCvdCommand) exec(cvd *cvd.CLI, sel cvd.InstanceSelector) error {