Add error to GetSession return values

- Add button to copy instance SSH access

pwd/pwd.go

@@ -77,7 +77,7 @@ type PWDApi interface {
 	SessionClose(session *types.Session) error
 	SessionGetSmallestViewPort(sessionId string) types.ViewPort
 	SessionDeployStack(session *types.Session) error
-	SessionGet(id string) *types.Session
+	SessionGet(id string) (*types.Session, error)
 	SessionSetup(session *types.Session, conf SessionSetupConf) error
 
 	InstanceNew(session *types.Session, conf types.InstanceConfig) (*types.Instance, error)

pwd/session.go

@@ -205,17 +205,17 @@ func (p *pwd) SessionDeployStack(s *types.Session) error {
 	return nil
 }
 
-func (p *pwd) SessionGet(sessionId string) *types.Session {
+func (p *pwd) SessionGet(sessionId string) (*types.Session, error) {
 	defer observeAction("SessionGet", time.Now())
 
 	s, err := p.storage.SessionGet(sessionId)
 
 	if err != nil {
 		log.Println(err)
-		return nil
+		return nil, err
 	}
 
-	return s
+	return s, nil
 }
 
 func (p *pwd) SessionSetup(session *types.Session, sconf SessionSetupConf) error {