static IOTHUB_DEVICE_CONFIGURATION_RESULT sendHttpRequestDeviceConfiguration()

in iothub_service_client/src/iothub_deviceconfiguration.c [186:316]
127 lines of code
26 McCabe index (conditional complexity)

static IOTHUB_DEVICE_CONFIGURATION_RESULT sendHttpRequestDeviceConfiguration(IOTHUB_SERVICE_CLIENT_DEVICE_CONFIGURATION_HANDLE serviceClientDeviceConfigurationHandle, IOTHUB_DEVICECONFIGURATION_REQUEST_MODE iotHubDeviceConfigurationRequestMode, const char* id, BUFFER_HANDLE json, size_t maxConfigurationsCount, BUFFER_HANDLE responseBuffer)
{
    IOTHUB_DEVICE_CONFIGURATION_RESULT result;

    STRING_HANDLE uriResource = NULL;
    STRING_HANDLE accessKey = NULL;
    STRING_HANDLE keyName = NULL;
    HTTPAPIEX_SAS_HANDLE httpExApiSasHandle;
    HTTPAPIEX_HANDLE httpExApiHandle;
    HTTP_HEADERS_HANDLE httpHeader;

    if ((uriResource = STRING_construct(serviceClientDeviceConfigurationHandle->hostname)) == NULL)
    {
        LogError("STRING_construct failed for uriResource");
        result = IOTHUB_DEVICE_CONFIGURATION_ERROR;
    }
    else if ((accessKey = STRING_construct(serviceClientDeviceConfigurationHandle->sharedAccessKey)) == NULL)
    {
        LogError("STRING_construct failed for accessKey");
        STRING_delete(uriResource);
        result = IOTHUB_DEVICE_CONFIGURATION_ERROR;
    }
    else if ((keyName = STRING_construct(serviceClientDeviceConfigurationHandle->keyName)) == NULL)
    {
        LogError("STRING_construct failed for keyName");
        STRING_delete(accessKey);
        STRING_delete(uriResource);
        result = IOTHUB_DEVICE_CONFIGURATION_ERROR;
    }
    else if ((httpHeader = createHttpHeader(iotHubDeviceConfigurationRequestMode)) == NULL)
    {
        LogError("HttpHeader creation failed");
        STRING_delete(keyName);
        STRING_delete(accessKey);
        STRING_delete(uriResource);
        result = IOTHUB_DEVICE_CONFIGURATION_ERROR;
    }
    else if ((httpExApiSasHandle = HTTPAPIEX_SAS_Create(accessKey, uriResource, keyName)) == NULL)
    {
        LogError("HTTPAPIEX_SAS_Create failed");
        HTTPHeaders_Free(httpHeader);
        STRING_delete(keyName);
        STRING_delete(accessKey);
        STRING_delete(uriResource);
        result = IOTHUB_DEVICE_CONFIGURATION_HTTPAPI_ERROR;
    }
    else if ((httpExApiHandle = HTTPAPIEX_Create(serviceClientDeviceConfigurationHandle->hostname)) == NULL)
    {
        LogError("HTTPAPIEX_Create failed");
        HTTPAPIEX_SAS_Destroy(httpExApiSasHandle);
        HTTPHeaders_Free(httpHeader);
        STRING_delete(keyName);
        STRING_delete(accessKey);
        STRING_delete(uriResource);
        result = IOTHUB_DEVICE_CONFIGURATION_HTTPAPI_ERROR;
    }
    else
    {
        HTTPAPI_REQUEST_TYPE httpApiRequestType = HTTPAPI_REQUEST_GET;
        STRING_HANDLE relativePath;
        unsigned int statusCode = 0;
        unsigned char is_error = 0;

        if ((iotHubDeviceConfigurationRequestMode == IOTHUB_DEVICECONFIGURATION_REQUEST_ADD) || (iotHubDeviceConfigurationRequestMode == IOTHUB_DEVICECONFIGURATION_REQUEST_UPDATE))
        {
            httpApiRequestType = HTTPAPI_REQUEST_PUT;
        }
        else if ((iotHubDeviceConfigurationRequestMode == IOTHUB_DEVICECONFIGURATION_REQUEST_GET) || (iotHubDeviceConfigurationRequestMode == IOTHUB_DEVICECONFIGURATION_REQUEST_GET_LIST))
        {
            httpApiRequestType = HTTPAPI_REQUEST_GET;
        }
        else if (iotHubDeviceConfigurationRequestMode == IOTHUB_DEVICECONFIGURATION_REQUEST_DELETE)
        {
            httpApiRequestType = HTTPAPI_REQUEST_DELETE;
        }
        else if (iotHubDeviceConfigurationRequestMode == IOTHUB_DEVICECONFIGURATION_REQUEST_APPLY_CONFIGURATION_CONTENT)
        {
            httpApiRequestType = HTTPAPI_REQUEST_POST;
        }
        else
        {
            is_error = 1;
        }

        if (is_error)
        {
            LogError("Invalid request type");
            result = IOTHUB_DEVICE_CONFIGURATION_HTTPAPI_ERROR;
        }
        else
        {
            if ((relativePath = createRelativePath(iotHubDeviceConfigurationRequestMode, id, maxConfigurationsCount)) == NULL)
            {
                LogError("Failure creating relative path");
                result = IOTHUB_DEVICE_CONFIGURATION_ERROR;
            }
            else if (HTTPAPIEX_SAS_ExecuteRequest(httpExApiSasHandle, httpExApiHandle, httpApiRequestType, STRING_c_str(relativePath), httpHeader, json, &statusCode, NULL, responseBuffer) != HTTPAPIEX_OK)
            {
                LogError("HTTPAPIEX_SAS_ExecuteRequest failed");
                STRING_delete(relativePath);
                result = IOTHUB_DEVICE_CONFIGURATION_HTTPAPI_ERROR;
            }
            else
            {
                STRING_delete(relativePath);
                if ((((iotHubDeviceConfigurationRequestMode == IOTHUB_DEVICECONFIGURATION_REQUEST_ADD) ||
                    (iotHubDeviceConfigurationRequestMode == IOTHUB_DEVICECONFIGURATION_REQUEST_GET) ||
                    (iotHubDeviceConfigurationRequestMode == IOTHUB_DEVICECONFIGURATION_REQUEST_GET_LIST) ||
                    (iotHubDeviceConfigurationRequestMode == IOTHUB_DEVICECONFIGURATION_REQUEST_UPDATE)) && (statusCode == 200)) ||
                    ((iotHubDeviceConfigurationRequestMode == IOTHUB_DEVICECONFIGURATION_REQUEST_DELETE) && (statusCode == 204)) ||
                    ((iotHubDeviceConfigurationRequestMode == IOTHUB_DEVICECONFIGURATION_REQUEST_APPLY_CONFIGURATION_CONTENT) && ((statusCode == 200) || (statusCode == 204)))
                    )
                {
                    result = IOTHUB_DEVICE_CONFIGURATION_OK;
                }
                else
                {
                    LogError("Http Failure status code %d.", statusCode);
                    result = IOTHUB_DEVICE_CONFIGURATION_ERROR;
                }
            }
        }
        HTTPAPIEX_Destroy(httpExApiHandle);
        HTTPAPIEX_SAS_Destroy(httpExApiSasHandle);
        HTTPHeaders_Free(httpHeader);
        STRING_delete(keyName);
        STRING_delete(accessKey);
        STRING_delete(uriResource);
    }
    return result;
}