func resourceAwsCodeDeployDeploymentGroupUpdate(d *schema.ResourceData, meta interface{}) error {
	conn := meta.(*AWSClient).codedeployconn

	input := codedeploy.UpdateDeploymentGroupInput{
		ApplicationName:            aws.String(d.Get("app_name").(string)),
		CurrentDeploymentGroupName: aws.String(d.Get("deployment_group_name").(string)),
	}

	if d.HasChange("autoscaling_groups") {
		_, n := d.GetChange("autoscaling_groups")
		input.AutoScalingGroups = expandStringList(n.(*schema.Set).List())
	}
	if d.HasChange("deployment_config_name") {
		_, n := d.GetChange("deployment_config_name")
		input.DeploymentConfigName = aws.String(n.(string))
	}
	if d.HasChange("deployment_group_name") {
		_, n := d.GetChange("deployment_group_name")
		input.NewDeploymentGroupName = aws.String(n.(string))
	}

	// TagFilters aren't like tags. They don't append. They simply replace.
	if d.HasChange("on_premises_instance_tag_filter") {
		_, n := d.GetChange("on_premises_instance_tag_filter")
		onPremFilters := buildOnPremTagFilters(n.(*schema.Set).List())
		input.OnPremisesInstanceTagFilters = onPremFilters
	}
	if d.HasChange("ec2_tag_filter") {
		_, n := d.GetChange("ec2_tag_filter")
		ec2Filters := buildEC2TagFilters(n.(*schema.Set).List())
		input.Ec2TagFilters = ec2Filters
	}
	if d.HasChange("trigger_configuration") {
		_, n := d.GetChange("trigger_configuration")
		triggerConfigs := buildTriggerConfigs(n.(*schema.Set).List())
		input.TriggerConfigurations = triggerConfigs
	}

	log.Printf("[DEBUG] Updating CodeDeploy DeploymentGroup %s", d.Id())
	_, err := conn.UpdateDeploymentGroup(&input)
	if err != nil {
		return err
	}

	return resourceAwsCodeDeployDeploymentGroupRead(d, meta)
}
func resourceAwsCodeDeployDeploymentGroupUpdate(d *schema.ResourceData, meta interface{}) error {
	conn := meta.(*AWSClient).codedeployconn

	input := codedeploy.UpdateDeploymentGroupInput{
		ApplicationName:            aws.String(d.Get("app_name").(string)),
		CurrentDeploymentGroupName: aws.String(d.Get("deployment_group_name").(string)),
	}

	if d.HasChange("autoscaling_groups") {
		_, n := d.GetChange("autoscaling_groups")
		input.AutoScalingGroups = expandStringList(n.(*schema.Set).List())
	}
	if d.HasChange("deployment_config_name") {
		_, n := d.GetChange("deployment_config_name")
		input.DeploymentConfigName = aws.String(n.(string))
	}
	if d.HasChange("deployment_group_name") {
		_, n := d.GetChange("deployment_group_name")
		input.NewDeploymentGroupName = aws.String(n.(string))
	}

	// TagFilters aren't like tags. They don't append. They simply replace.
	if d.HasChange("on_premises_instance_tag_filter") {
		_, n := d.GetChange("on_premises_instance_tag_filter")
		onPremFilters := buildOnPremTagFilters(n.(*schema.Set).List())
		input.OnPremisesInstanceTagFilters = onPremFilters
	}
	if d.HasChange("ec2_tag_filter") {
		_, n := d.GetChange("ec2_tag_filter")
		ec2Filters := buildEC2TagFilters(n.(*schema.Set).List())
		input.Ec2TagFilters = ec2Filters
	}
	if d.HasChange("trigger_configuration") {
		_, n := d.GetChange("trigger_configuration")
		triggerConfigs := buildTriggerConfigs(n.(*schema.Set).List())
		input.TriggerConfigurations = triggerConfigs
	}

	log.Printf("[DEBUG] Updating CodeDeploy DeploymentGroup %s", d.Id())
	// Retry to handle IAM role eventual consistency.
	err := resource.Retry(5*time.Minute, func() *resource.RetryError {
		_, err := conn.UpdateDeploymentGroup(&input)
		if err != nil {
			retry := false
			codedeployErr, ok := err.(awserr.Error)
			if !ok {
				return resource.NonRetryableError(err)
			}
			if codedeployErr.Code() == "InvalidRoleException" {
				retry = true
			}
			if codedeployErr.Code() == "InvalidTriggerConfigException" {
				r := regexp.MustCompile("^Topic ARN .+ is not valid$")
				if r.MatchString(codedeployErr.Message()) {
					retry = true
				}
			}
			if retry {
				log.Printf("[DEBUG] Retrying Code Deployment Group Update: %q",
					codedeployErr.Message())
				return resource.RetryableError(err)
			}

			return resource.NonRetryableError(err)
		}
		return nil
	})

	if err != nil {
		return err
	}

	return resourceAwsCodeDeployDeploymentGroupRead(d, meta)
}