Unicode C
Unicode C
Azure File Service: Upload File
See more Azure Cloud Storage Examples
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 Unicode C Downloads
#include <C_CkRestW.h>
#include <C_CkBinDataW.h>
#include <C_CkAuthAzureStorageW.h>
#include <C_CkStringBuilderW.h>
void ChilkatSample(void)
{
BOOL success;
HCkRestW rest;
BOOL bTls;
int port;
BOOL bAutoReconnect;
HCkBinDataW jpgData;
HCkAuthAzureStorageW azAuth;
HCkStringBuilderW sbFileSize;
const wchar_t *responseStr;
HCkStringBuilderW sbRange;
HCkStringBuilderW sbResponseBody;
success = FALSE;
// 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);
}