How to read/write Azure Blob Storage from AzureRTOS/NetXduo system

Hi @yoji sato thanks for sharing. We are discussing it internally, will get back to you.

Hi @yoji sato Thanks for sharing. We are discussing it internally, will get back to you.

Hello Bo Chen

Thank you for your internal discussion.

If the internal discussion is taking a long time, Could you please let us know when you expect the results of the discussion?

Best regards,

Yoji Sato

Grape Systems Inc.

Hi @yoji sato Sorry for the late response. We have not made a decision yet. I would suggest you referring to azure-rtos-file-upload repo, which uses Azure RTOS Web to upload file to Azure Blob Storage, you may refer to this commit to just change your sample to support it. Note: this repo is created by community for testing purpose only, and all changes were made by community, it is not an official Azure RTOS patch/feature and not intended for production use. Of course, once we have plan to officially support Azure Blob in Azure RTOS, I will let you know. Thanks.

Hello Bo Chen

Thank you for providing the sample program information that accesses Azure Blob storage.

When I checked the contents of that, it seems that the size of the data to be uploaded is not very large, and it seems that it can be contained in one packet addition process.

If possible, I would like you to introduce a sample program that uploads (and downloads) large data exceeding 1 MB.Is there anything suitable?

Supplement the information for the programs referenced below.
The referenced source is the function of the file in the folder below.
In this example, the data specified by "file_content" is combined with the outgoing packet information in a single nx_packet_data_append function call (transcribed below).
Therefore, it seems that you cannot send more than the memory size secured in the packet pool.

In the case of embedded devices, it is difficult to allocate a MB-order memory area to the packet pool, and it is necessary to divide it by the available working memory size and request transmission.
Therefore, I would like to ask for your advice. Is it possible to send a transmission request while dividing large content data (MB order) using a buffer smaller than the content data with nx_web_http_client?
If you have such a sample, could you introduce it to me?

Best regards,
Yoji Sato
Grape Systems Inc.

azure-rtos-file-upload-main\sample_azure_iot_file_upload\
sample_azure_iot_file_upload.c

UINT sample_file_upload(UCHAR *file_content, UINT file_content_len,
                         UCHAR *host_name, UINT host_name_len,
                         UCHAR *full_uri, UINT full_uri_len,
                         UINT wait_option)
{
    :
     status = nx_packet_data_append(packet_ptr, file_content, file_content_len, iothub_client.nx_azure_iot_ptr -> nx_azure_iot_pool_ptr, wait_option); 
    :
}

Hi @yoji sato Sorry for the late response. Sure, you can divide 1MB data to available working memory size, such as: send 1K bytes each time as below:

        while (1)
        {

            /* Allocate a packet.  */
            status = nx_web_http_client_request_packet_allocate(&my_client, &send_packet, NX_WAIT_FOREVER);

            /* Check status.  */
            if (status)
            {
                return;
            }

            /* Append 1K data.  */
            nx_packet_data_append(send_packet, "1K bytes ...", 1024, &client_pool, NX_WAIT_FOREVER);
            if (status)
            {
                nx_packet_release(send_packet);
                return;
            }

            /* Send the data.  */
            status = nx_web_http_client_put_packet(&my_client, send_packet, NX_WAIT_FOREVER);
            if (status)
            {
                nx_packet_release(send_packet);
                return;
            }
        }

Hi @yoji sato We still have not heard back from you. Just wanted to check if the answer provided below was helpful? If it answers your query, please do click Accept Answer and Yes for the answer, as it might be beneficial to other community members reading this thread. And, if you have any further query do let us know. Thank you

Hello Bo Chen
Thank you for your sample program.

Hello Leela Rajesh Sayana - MSFT
Thank you for following up on this matter.

I apologize for the delay in responding to this matter.

I haven't tried the sample program you gave me yet, but I understand how it works.

Also, I would like to confirm one more thing.

Regarding this function in AzureRTOS, is it possible for Microsoft to officially support it?

There are requests from customers who want to transfer not only small telemetry but also large data collectively even with IoT devices. I believe that support for this feature will encourage more use (and usage fees) of Azure.

Could you please consider it positively?

Best regards,

Yoji Sato

Hi @yoji sato Understood, but we currently do not have plan to officially support it in the near future.

Hello Bo Chen,
Thank you for your reply.

I understand that there are no plans to support it in the near future.
I will consider the correspondence referring to the information of the sample previously informed.

Thank you for your support in this matter.
Yoji Sato

Hello Bo Chen,
Sorry, Just to be sure, let me check one thing.

Regarding the sample you provided, is it correct to recognize that it uses HTTPS to establish a connection with Azure Blob Storage?

Best regards,
Yoji Sato.

Hi @yoji sato you are right, using HTTPs with Azure Blob Storage.