Scriptrunner listener as a different user

[Pedro Felgueiras]

I'm trying to configure a listener that changes some user details when he logs in but i got an error message saying "You do not have the permission to update users." 

That is totally valid and I understand why it happens, The user that has made the login doesn't have permission to update users. 

My question is if it's possible to execute the listener as a different user ?

UserService userService = ComponentAccessor.getComponent(UserService)
ApplicationUsers.from(ImmutableUser.newUser(event.getUser().getDirectoryUser()).name("New Name").toUser())
UserService.UpdateUserValidationResult updateUserValidationResult = userService.validateUpdateUser(updateUser)
if (updateUserValidationResult.isValid()) {
  userService.updateUser(updateUserValidationResult)
}else{
  updateUserValidationResult.getErrorCollection().each{ log.error it}
}

[Pedro Felgueiras]

Figured it out pretty fast 

ApplicationUser admin = ComponentAccessor.getUserManager().getUserByName("USERNAME") 
ComponentAccessor.getJiraAuthenticationContext().setLoggedInUser(admin)