func (d *Driver) PreCreateCheck() error {
	c, err := newComputeUtil(d)
	if err != nil {
		return err
	}

	// Check that the project exists. It will also check the credentials
	// at the same time.
	log.Infof("Check that the project exists")

	if _, err = c.service.Projects.Get(d.Project).Do(); err != nil {
		return fmt.Errorf("Project with ID %q not found. %v", d.Project, err)
	}

	// Check if the instance already exists. There will be an error if the instance
	// doesn't exist, so just check instance for nil.
	log.Infof("Check if the instance already exists")

	instance, _ := c.instance()
	if d.UseExisting {
		if instance == nil {
			return fmt.Errorf("unable to find instance %q in zone %q", d.MachineName, d.Zone)
		}
	} else {
		if instance != nil {
			return fmt.Errorf("instance %q already exists in zone %q", d.MachineName, d.Zone)
		}
	}

	return nil
}
func (d *Driver) PreCreateCheck() error {
	c, err := newComputeUtil(d)
	if err != nil {
		return err
	}

	
	
	log.Infof("Check that the project exists")

	if _, err = c.service.Projects.Get(d.Project).Do(); err != nil {
		return fmt.Errorf("Project with ID %q not found. %v", d.Project, err)
	}

	
	
	log.Infof("Check if the instance already exists")

	instance, _ := c.instance()
	if d.UseExisting {
		if instance == nil {
			return fmt.Errorf("unable to find instance %q in zone %q", d.MachineName, d.Zone)
		}
	} else {
		if instance != nil {
			return fmt.Errorf("instance %q already exists in zone %q", d.MachineName, d.Zone)
		}
	}

	return nil
}
func ( d * Driver ) PreCreateCheck ( ) error { c , err := newComputeUtil ( d ) if err != nil { return err } // Check that the project exists. It will also check the credentials // at the same time. log . Infof ( " " ) if _ , err = c . service . Projects . Get ( d . Project ) . Do ( ) ; err != nil { return fmt . Errorf ( " " , d . Project , err ) } // Check if the instance already exists. There will be an error if the instance // doesn't exist, so just check instance for nil. log . Infof ( " " ) instance , _ := c . instance ( ) if d . UseExisting { if instance == nil { return fmt . Errorf ( " " , d . MachineName , d . Zone ) } } else { if instance != nil { return fmt . Errorf ( " " , d . MachineName , d . Zone ) } } return nil }
// PreCreateCheck is called to enforce pre-creation steps
PreCreateCheck is called to enforce pre - creation steps