func cloudTrailSetLogging(conn *cloudtrail.CloudTrail, enabled bool, id string) error {
	if enabled {
		log.Printf(
			"[DEBUG] Starting logging on CloudTrail (%s)",
			id)
		StartLoggingOpts := &cloudtrail.StartLoggingInput{
			Name: aws.String(id),
		}
		if _, err := conn.StartLogging(StartLoggingOpts); err != nil {
			return fmt.Errorf(
				"Error starting logging on CloudTrail (%s): %s",
				id, err)
		}
	} else {
		log.Printf(
			"[DEBUG] Stopping logging on CloudTrail (%s)",
			id)
		StopLoggingOpts := &cloudtrail.StopLoggingInput{
			Name: aws.String(id),
		}
		if _, err := conn.StopLogging(StopLoggingOpts); err != nil {
			return fmt.Errorf(
				"Error stopping logging on CloudTrail (%s): %s",
				id, err)
		}
	}

	return nil
}

// setTags is a helper to set the tags for a resource. It expects the
// tags field to be named "tags"
func setTagsCloudtrail(conn *cloudtrail.CloudTrail, d *schema.ResourceData) error {
	if d.HasChange("tags") {
		oraw, nraw := d.GetChange("tags")
		o := oraw.(map[string]interface{})
		n := nraw.(map[string]interface{})
		create, remove := diffTagsCloudtrail(tagsFromMapCloudtrail(o), tagsFromMapCloudtrail(n))

		// Set tags
		if len(remove) > 0 {
			input := cloudtrail.RemoveTagsInput{
				ResourceId: aws.String(d.Get("arn").(string)),
				TagsList:   remove,
			}
			log.Printf("[DEBUG] Removing CloudTrail tags: %s", input)
			_, err := conn.RemoveTags(&input)
			if err != nil {
				return err
			}
		}
		if len(create) > 0 {
			input := cloudtrail.AddTagsInput{
				ResourceId: aws.String(d.Get("arn").(string)),
				TagsList:   create,
			}
			log.Printf("[DEBUG] Adding CloudTrail tags: %s", input)
			_, err := conn.AddTags(&input)
			if err != nil {
				return err
			}
		}
	}

	return nil
}

func cloudTrailGetLoggingStatus(conn *cloudtrail.CloudTrail, id *string) (bool, error) {
	GetTrailStatusOpts := &cloudtrail.GetTrailStatusInput{
		Name: id,
	}
	resp, err := conn.GetTrailStatus(GetTrailStatusOpts)
	if err != nil {
		return false, fmt.Errorf("Error retrieving logging status of CloudTrail (%s): %s", *id, err)
	}

	return *resp.IsLogging, err
}