(Unicode C) Azure File Service: Upload File

Sample code to upload a file to a directory in a share in the Azure File Service. A file is uploaded by first creating the file in the Azure share and then writes a range of bytes to the file. Azure imposes a 4MB limit for each PUT to write a range. Files larger than 4MB need to be uploaded by making multiple "Put Range" calls. This example uploads a file small enough for a single "Put Range" call.

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#include <C_CkRestW.h>
#include <C_CkBinDataW.h>
#include <C_CkAuthAzureStorageW.h>
#include <C_CkStringBuilderW.h>

void ChilkatSample(void)
    {
    HCkRestW rest;
    BOOL bTls;
    int port;
    BOOL bAutoReconnect;
    BOOL success;
    HCkBinDataW jpgData;
    HCkAuthAzureStorageW azAuth;
    HCkStringBuilderW sbFileSize;
    const wchar_t *responseStr;
    HCkStringBuilderW sbRange;
    HCkStringBuilderW sbResponseBody;

    // Azure File Service Example: Upload a file.  
    // See:  https://docs.microsoft.com/en-us/rest/api/storageservices/create-share
    // also see: https://docs.microsoft.com/en-us/rest/api/storageservices/put-range

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    rest = CkRestW_Create();

    // Connect to the Azure Storage Blob Service
    bTls = TRUE;
    port = 443;
    bAutoReconnect = TRUE;
    // In this example, the storage account name is "chilkat".
    success = CkRestW_Connect(rest,L"chilkat.file.core.windows.net",port,bTls,bAutoReconnect);
    if (success != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        return;
    }

    // This example will upload a relatively small file (760K), so it may as well 
    // just be load it into memory..
    jpgData = CkBinDataW_Create();
    CkBinDataW_LoadFile(jpgData,L"qa_data/jpg/penguins.jpg");

    // Provide Azure Cloud credentials for the REST calls.
    azAuth = CkAuthAzureStorageW_Create();
    CkAuthAzureStorageW_putAccessKey(azAuth,L"AZURE_ACCESS_KEY");
    // The account name used here should match the 1st part of the domain passed in the call to Connect (above).
    CkAuthAzureStorageW_putAccount(azAuth,L"chilkat");
    CkAuthAzureStorageW_putScheme(azAuth,L"SharedKey");
    CkAuthAzureStorageW_putService(azAuth,L"File");
    // This causes the "x-ms-version: 2021-08-06" header to be automatically added.
    CkAuthAzureStorageW_putXMsVersion(azAuth,L"2021-08-06");
    success = CkRestW_SetAuthAzureStorage(rest,azAuth);

    // Note: The application does not need to explicitly set the following
    // headers: x-ms-date, Authorization.  These headers
    // are automatically set by Chilkat.

    // However, a few additional headers are required for the "Create File" operation:
    CkRestW_AddHeader(rest,L"x-ms-type",L"file");

    // This required header specifies the final size of the file (or the maximum size it can be).
    sbFileSize = CkStringBuilderW_Create();
    CkStringBuilderW_AppendInt(sbFileSize,CkBinDataW_getNumBytes(jpgData));
    CkRestW_AddHeader(rest,L"x-ms-content-length",CkStringBuilderW_getAsString(sbFileSize));

    // Send a PUT request to create the file (or replace the file if it already exists).
    // This will initialize the file in the Azure file storage.  To upload content, we'll need
    // to do the "Put Range" operation one or more times.

    // The following will create the file "penguins.jpg" in the share "pip", in the directory "/wildlife/antarctic"
    responseStr = CkRestW_fullRequestNoBody(rest,L"PUT",L"/pip/wildlife/antarctic/penguins.jpg");
    if (CkRestW_getLastMethodSuccess(rest) != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        CkBinDataW_Dispose(jpgData);
        CkAuthAzureStorageW_Dispose(azAuth);
        CkStringBuilderW_Dispose(sbFileSize);
        return;
    }

    // When successful, the Azure File Service will respond with a 201 (Created) response status code,
    // with no XML response body.  If an error response is returned, there will be an XML response body.

    if (CkRestW_getResponseStatusCode(rest) != 201) {
        // Examine the request/response to see what happened.
        wprintf(L"response status code = %d\n",CkRestW_getResponseStatusCode(rest));
        wprintf(L"response status text = %s\n",CkRestW_responseStatusText(rest));
        wprintf(L"response header: %s\n",CkRestW_responseHeader(rest));
        wprintf(L"response body (if any): %s\n",responseStr);
        wprintf(L"---\n");
        wprintf(L"LastRequestStartLine: %s\n",CkRestW_lastRequestStartLine(rest));
        wprintf(L"LastRequestHeader: %s\n",CkRestW_lastRequestHeader(rest));
        CkRestW_Dispose(rest);
        CkBinDataW_Dispose(jpgData);
        CkAuthAzureStorageW_Dispose(azAuth);
        CkStringBuilderW_Dispose(sbFileSize);
        return;
    }

    wprintf(L"Successfully created penguins.jpg\n");

    // --------------------------------------------------------------------------------
    // Upload the file data...

    // Make sure the headers from the "Create File" operation are removed.
    CkRestW_ClearAllHeaders(rest);

    // The only tricky part here is to correctly add the x-ms-range header.
    // It will be formatted like this:
    // x-ms-range: bytes=0-759623

    sbRange = CkStringBuilderW_Create();
    CkStringBuilderW_Append(sbRange,L"bytes=0-");
    CkStringBuilderW_AppendInt(sbRange,CkBinDataW_getNumBytes(jpgData) - 1);

    CkRestW_AddHeader(rest,L"x-ms-range",CkStringBuilderW_getAsString(sbRange));

    // The x-ms-write header is also required:
    CkRestW_AddHeader(rest,L"x-ms-write",L"update");

    sbResponseBody = CkStringBuilderW_Create();
    // IMPORTANT:  Don't forget the "?comp=range" at the end of the path passed in the 2nd argument.
    success = CkRestW_FullRequestBd(rest,L"PUT",L"/pip/wildlife/antarctic/penguins.jpg?comp=range",jpgData,sbResponseBody);
    if (success != TRUE) {
        // This would indicate a failure where no response was received.
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        CkBinDataW_Dispose(jpgData);
        CkAuthAzureStorageW_Dispose(azAuth);
        CkStringBuilderW_Dispose(sbFileSize);
        CkStringBuilderW_Dispose(sbRange);
        CkStringBuilderW_Dispose(sbResponseBody);
        return;
    }

    // A 201 response indicates the data was uploaded.
    if (CkRestW_getResponseStatusCode(rest) != 201) {
        // Examine the request/response to see what happened.
        wprintf(L"response status code = %d\n",CkRestW_getResponseStatusCode(rest));
        wprintf(L"response status text = %s\n",CkRestW_responseStatusText(rest));
        wprintf(L"response header: %s\n",CkRestW_responseHeader(rest));
        wprintf(L"response body (if any): %s\n",responseStr);
        wprintf(L"---\n");
        wprintf(L"LastRequestStartLine: %s\n",CkRestW_lastRequestStartLine(rest));
        wprintf(L"LastRequestHeader: %s\n",CkRestW_lastRequestHeader(rest));
        CkRestW_Dispose(rest);
        CkBinDataW_Dispose(jpgData);
        CkAuthAzureStorageW_Dispose(azAuth);
        CkStringBuilderW_Dispose(sbFileSize);
        CkStringBuilderW_Dispose(sbRange);
        CkStringBuilderW_Dispose(sbResponseBody);
        return;
    }

    wprintf(L"Successfully uploaded data into penguins.jpg\n");


    CkRestW_Dispose(rest);
    CkBinDataW_Dispose(jpgData);
    CkAuthAzureStorageW_Dispose(azAuth);
    CkStringBuilderW_Dispose(sbFileSize);
    CkStringBuilderW_Dispose(sbRange);
    CkStringBuilderW_Dispose(sbResponseBody);

    }