public ProgressEvent handleRequest()

in aws-logs-loggroup/src/main/java/software/amazon/logs/loggroup/UpdateHandler.java [34:68]
27 lines of code
8 McCabe index (conditional complexity)

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

        final ResourceModel model = request.getDesiredResourceState();
        final ResourceModel previousModel = request.getPreviousResourceState();
        final Map<String, String> tags = request.getDesiredResourceTags();
        final Map<String, String> previousTags = request.getPreviousResourceTags();

        final boolean retentionChanged = ! retentionUnchanged(previousModel, model);
        final boolean kmsKeyChanged = ! kmsKeyUnchanged(previousModel, model);
        final boolean tagsChanged = ! tagsUnchanged(previousTags, tags);
        if (retentionChanged && model.getRetentionInDays() == null) {
            deleteRetentionPolicy(proxy, request, logger);
        } else if (retentionChanged){
            putRetentionPolicy(proxy, request, logger);
        }

        // It can take up to five minutes for the (dis)associate operation to take effect
        // It's unclear from the documentation if that state can be checked via the API.
        // https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/encrypt-log-data-kms.html
        if (kmsKeyChanged && model.getKmsKeyId() == null) {
            disassociateKmsKey(proxy, request, logger);
        } else if (kmsKeyChanged) {
            associateKmsKey(proxy, request, logger);
        }

        if (tagsChanged) {
            updateTags(proxy, model, previousTags, tags, logger);
        }

        return ProgressEvent.defaultSuccessHandler(model);
    }