Method updateStack

internal/deploy/stack.go:176–208

(ctx context.Context, stackName, templateBody string, parameters []*cloudformation.Parameter)

}

func (s *StackDeployer) updateStack(ctx context.Context, stackName, templateBody string, parameters []*cloudformation.Parameter) (*StackOutput, error) {
	log.Printf("Updating existing stack...")
	
	input := &cloudformation.UpdateStackInput{
		StackName:    aws.String(stackName),
		TemplateBody: aws.String(templateBody),
		Parameters:   parameters,
		Capabilities: []*string{
			aws.String(cloudformation.CapabilityCapabilityNamedIam),
		},
	}
	
	_, err := s.clients.CloudFormation.UpdateStackWithContext(ctx, input)
	if err != nil {
		if awsErr, ok := err.(awserr.Error); ok {
			if awsErr.Code() == "ValidationError" && strings.Contains(awsErr.Message(), "No updates are to be performed") {
				log.Printf("No updates needed for stack")
				return s.GetStackOutputs(ctx)
			}
		}
		return nil, fmt.Errorf("failed to update stack: %w", err)
	}
	
	// Wait for update to complete
	log.Printf("Waiting for stack update to complete...")
	err = s.waitForStackOperation(ctx, stackName, cloudformation.StackStatusUpdateComplete, 10*time.Minute)
	if err != nil {
		return nil, fmt.Errorf("stack update failed: %w", err)
	}
	
	log.Printf("Stack updated successfully")
	return s.GetStackOutputs(ctx)
}

func (s *StackDeployer) stackExists(ctx context.Context, stackName string) (bool, error) {
	input := &cloudformation.DescribeStacksInput{