func updateUsers()

in src/terraform/providers/terraform-provider-avere/resource_vfxt.go [1390:1464]
56 lines of code
24 McCabe index (conditional complexity)

func updateUsers(d *schema.ResourceData, avereVfxt *AvereVfxt) error {
	if d.HasChange(user) {
		old, new := d.GetChange(user)
		oldUsers, err := expandUsers(old.(*schema.Set).List())
		if err != nil {
			return err
		}
		newUsers, err := expandUsers(new.(*schema.Set).List())
		if err != nil {
			return err
		}
		existingUsers, err := avereVfxt.ListNonAdminUsers()
		if err != nil {
			return err
		}

		removalList := make(map[string]*User)
		additionList := make(map[string]*User)

		// compare the old model to new
		for key, oldVal := range oldUsers {
			existingVal, existingOK := existingUsers[key]

			// check if user was removed and still exists
			if newVal, ok := newUsers[key]; !ok && existingOK {
				removalList[key] = oldVal
				// check if user was modified
			} else if ok && (!newVal.IsEqual(oldVal) || (existingOK && !newVal.IsEqualNoPassword(existingVal))) {
				if existingOK {
					removalList[key] = oldVal
				}
				additionList[key] = newVal
				// add if the user was missing
			} else if ok && !existingOK {
				additionList[key] = newVal
			}
		}

		// compare cluster existing to new
		for key, existingVal := range existingUsers {
			if _, oldOK := oldUsers[key]; oldOK {
				// this was in the model, and already evaluated
				continue
			}
			// check if the user exists on Avere and is removed in the model
			if newVal, ok := newUsers[key]; !ok {
				removalList[key] = existingVal

				// check if user exists on Avere and is modified from the model's values
			} else if !newVal.IsEqualNoPassword(existingVal) {
				removalList[key] = existingVal
				additionList[key] = newVal
			}
		}

		// find the new users
		for key, newVal := range newUsers {
			_, existingOK := existingUsers[key]

			if _, ok := oldUsers[key]; !ok && !existingOK {
				additionList[key] = newVal
			}
		}

		if err := removeUsers(removalList, avereVfxt); err != nil {
			return err
		}

		if err := addUsers(additionList, avereVfxt); err != nil {
			return err
		}
	}

	return nil
}