bool Sigv4HttpRequestSigner::SignRequest()

in source/auth/Sigv4Signing.cpp [226:264]
33 lines of code
5 McCabe index (conditional complexity)

            bool Sigv4HttpRequestSigner::SignRequest(
                const std::shared_ptr<Aws::Crt::Http::HttpRequest> &request,
                const ISigningConfig &config,
                const OnHttpRequestSigningComplete &completionCallback)
            {
                if (config.GetType() != SigningConfigType::Aws)
                {
                    aws_raise_error(AWS_ERROR_INVALID_ARGUMENT);
                    return false;
                }

                auto awsSigningConfig = static_cast<const AwsSigningConfig *>(&config);

                if (!awsSigningConfig->GetCredentialsProvider() && !awsSigningConfig->GetCredentials())
                {
                    aws_raise_error(AWS_ERROR_INVALID_ARGUMENT);
                    return false;
                }

                auto signerCallbackData = Crt::New<HttpSignerCallbackData>(m_allocator);

                if (!signerCallbackData)
                {
                    return false;
                }

                signerCallbackData->Alloc = m_allocator;
                signerCallbackData->OnRequestSigningComplete = completionCallback;
                signerCallbackData->Request = request;
                signerCallbackData->Signable = ScopedResource<struct aws_signable>(
                    aws_signable_new_http_request(m_allocator, request->GetUnderlyingMessage()), aws_signable_destroy);

                return aws_sign_request_aws(
                           m_allocator,
                           signerCallbackData->Signable.get(),
                           (aws_signing_config_base *)awsSigningConfig->GetUnderlyingHandle(),
                           s_http_signing_complete_fn,
                           signerCallbackData) == AWS_OP_SUCCESS;
            }