public Request buildRequest()

in lambda/src/main/java/cn/amazon/aws/rp/spapi/clients/ApiClient.java [997:1042]
37 lines of code
9 McCabe index (conditional complexity)

    public Request buildRequest(String path, String method, List<Pair> queryParams, List<Pair> collectionQueryParams, Object body, Map<String, String> headerParams, Map<String, Object> formParams, String[] authNames, ProgressRequestBody.ProgressRequestListener progressRequestListener) throws ApiException {
        updateParamsForAuth(authNames, queryParams, headerParams);

        final String url = buildUrl(path, queryParams, collectionQueryParams);
        final Request.Builder reqBuilder = new Request.Builder().url(url);
        processHeaderParams(headerParams, reqBuilder);

        String contentType = (String) headerParams.get("Content-Type");
        // ensuring a default content type
        if (contentType == null) {
            contentType = "application/json";
        }

        RequestBody reqBody;
        if (!HttpMethod.permitsRequestBody(method)) {
            reqBody = null;
        } else if ("application/x-www-form-urlencoded".equals(contentType)) {
            reqBody = buildRequestBodyFormEncoding(formParams);
        } else if ("multipart/form-data".equals(contentType)) {
            reqBody = buildRequestBodyMultipart(formParams);
        } else if (body == null) {
            if ("DELETE".equals(method)) {
                // allow calling DELETE without sending a request body
                reqBody = null;
            } else {
                // use an empty request body (for POST, PUT and PATCH)
                reqBody = RequestBody.create(MediaType.parse(contentType), "");
            }
        } else {
            reqBody = serialize(body, contentType);
        }

        Request request = null;

        if(progressRequestListener != null && reqBody != null) {
            ProgressRequestBody progressRequestBody = new ProgressRequestBody(reqBody, progressRequestListener);
            request = reqBuilder.method(method, progressRequestBody).build();
        } else {
            request = reqBuilder.method(method, reqBody).build();
        }
        logger.info("request to: " + url);
        request = lwaAuthorizationSigner.sign(request);
        request = awsSigV4Signer.sign(request);

        return request;
    }