public ProgressEvent handleRequest()

in aws-iotfleethub-application/src/main/java/software/amazon/iotfleethub/application/DeleteHandler.java [30:72]
35 lines of code
6 McCabe index (conditional complexity)

    public ProgressEvent<ResourceModel, CallbackContext> handleRequest(
            final AmazonWebServicesClientProxy proxy,
            final ResourceHandlerRequest<ResourceModel> request,
            final CallbackContext callbackContext,
            final Logger logger) {

        ResourceModel model = request.getDesiredResourceState();

        if (StringUtils.isEmpty(request.getClientRequestToken())) {
            logger.log(String.format("ClientToken is Required, but a client request token was not provided."));
            return ProgressEvent.failed(model, callbackContext, HandlerErrorCode.InvalidRequest, "ClientToken was not provided.");
        }

        // If application id regex is null or invalid, return NotFound to avoid stuck Delete-Failed state in CFN after invalid request
        String applicationId = model.getApplicationId();
        if (applicationId == null) {
            logger.log("Returning NotFound from DeleteHandler due to no Id provided in the model.");
            return ProgressEvent.failed(model, callbackContext, HandlerErrorCode.NotFound, "Application Id was not provided.");
        } else {
            boolean matches = APP_ID_PATTERN.matcher(applicationId).matches();
            if (!matches) {
                logger.log("Returning NotFound from DeleteHandler due to invalid Id " + applicationId);
                return ProgressEvent.failed(model, callbackContext, HandlerErrorCode.NotFound, "Invalid Application Id");
            }
        }

        DeleteApplicationRequest deleteRequest = Translator.translateToDeleteRequest(request, model);

        try {
            proxy.injectCredentialsAndInvokeV2(deleteRequest, iotFleetHubClient::deleteApplication);
        } catch (ResourceNotFoundException e) {
            logger.log(String.format("Application with Id %s was not found", model.getApplicationId()));
            return ProgressEvent.failed(model, callbackContext, HandlerErrorCode.NotFound, e.getMessage());
        } catch (RuntimeException e) {
            HandlerErrorCode err = Translator.translateExceptionToErrorCode(e, logger);
            return ProgressEvent.failed(model, callbackContext, err, e.getMessage());
        }

        logger.log(String.format("Deleted Application with Id %s from account %s ",
                model.getApplicationId(), request.getAwsAccountId()));

        return ProgressEvent.defaultSuccessHandler(null);
    }