Chilkat HOME .NET Core C# Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi ActiveX Delphi DLL Go Java Lianja Mono C# Node.js Objective-C PHP ActiveX PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift 2 Swift 3,4,5... Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(Unicode C) Azure File Service: Upload Large FileSample code to upload a large 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 writing ranges 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 large file requiring multiple "Put Range" calls.
#include <C_CkRestW.h> #include <C_CkFileAccessW.h> #include <C_CkAuthAzureStorageW.h> #include <C_CkStringBuilderW.h> #include <C_CkBinDataW.h> void ChilkatSample(void) { HCkRestW rest; BOOL bTls; int port; BOOL bAutoReconnect; BOOL success; const wchar_t *localFilePath; HCkFileAccessW fac; int szLocalFile; HCkAuthAzureStorageW azAuth; HCkStringBuilderW sbFileSize; const wchar_t *responseStr; HCkStringBuilderW sbRange; HCkStringBuilderW sbResponseBody; HCkBinDataW bdFileData; int numBytesLeft; int curIndex; int chunkSize; // Azure File Service Example: Upload a large 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 larger file. localFilePath = L"qa_data/zips/somethingBig.zip"; fac = CkFileAccessW_Create(); // Note: The FileSize method returns a signed 32-bit integer. If the file is potentially larger than 2GB, call FileSizeStr instead to return // the size of the file as a string, then convert to an integer value. szLocalFile = CkFileAccessW_FileSize(fac,localFilePath); if (szLocalFile < 0) { wprintf(L"%s\n",CkFileAccessW_lastErrorText(fac)); CkRestW_Dispose(rest); CkFileAccessW_Dispose(fac); return; } // 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: 2020-08-04" header to be automatically added. CkAuthAzureStorageW_putXMsVersion(azAuth,L"2020-08-04"); 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,szLocalFile); 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 "somethingBig.zip" in the share "pip" responseStr = CkRestW_fullRequestNoBody(rest,L"PUT",L"/pip/somethingBig.zip"); if (CkRestW_getLastMethodSuccess(rest) != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkRestW_Dispose(rest); CkFileAccessW_Dispose(fac); 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); CkFileAccessW_Dispose(fac); CkAuthAzureStorageW_Dispose(azAuth); CkStringBuilderW_Dispose(sbFileSize); return; } wprintf(L"Successfully created somethingBig.zip\n"); // -------------------------------------------------------------------------------- // Upload the file data... // Make sure the headers from the "Create File" operation are removed. CkRestW_ClearAllHeaders(rest); // The x-ms-write header is required for each "Put Range" request. CkRestW_AddHeader(rest,L"x-ms-write",L"update"); sbRange = CkStringBuilderW_Create(); sbResponseBody = CkStringBuilderW_Create(); bdFileData = CkBinDataW_Create(); // Open the file. We'll be reading and uploading in chunks.. success = CkFileAccessW_OpenForRead(fac,localFilePath); if (success != TRUE) { wprintf(L"%s\n",CkFileAccessW_lastErrorText(fac)); CkRestW_Dispose(rest); CkFileAccessW_Dispose(fac); CkAuthAzureStorageW_Dispose(azAuth); CkStringBuilderW_Dispose(sbFileSize); CkStringBuilderW_Dispose(sbRange); CkStringBuilderW_Dispose(sbResponseBody); CkBinDataW_Dispose(bdFileData); return; } numBytesLeft = szLocalFile; curIndex = 0; while (numBytesLeft > 0) { chunkSize = numBytesLeft; // Azure allows for 4MB max chunks (4 x 1024 x 1024 = 4194304) if (chunkSize > 4194304) { chunkSize = 4194304; } // 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 CkStringBuilderW_Clear(sbRange); CkStringBuilderW_Append(sbRange,L"bytes="); CkStringBuilderW_AppendInt(sbRange,curIndex); CkStringBuilderW_Append(sbRange,L"-"); CkStringBuilderW_AppendInt(sbRange,curIndex + chunkSize - 1); // This replaces the header if it already exists.. CkRestW_AddHeader(rest,L"x-ms-range",CkStringBuilderW_getAsString(sbRange)); // Read the next chunk from the local file. CkBinDataW_Clear(bdFileData); success = CkFileAccessW_FileReadBd(fac,chunkSize,bdFileData); success = CkRestW_FullRequestBd(rest,L"PUT",L"/pip/somethingBig.zip?comp=range",bdFileData,sbResponseBody); if (success != TRUE) { // This would indicate a failure where no response was received. wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkRestW_Dispose(rest); CkFileAccessW_Dispose(fac); CkAuthAzureStorageW_Dispose(azAuth); CkStringBuilderW_Dispose(sbFileSize); CkStringBuilderW_Dispose(sbRange); CkStringBuilderW_Dispose(sbResponseBody); CkBinDataW_Dispose(bdFileData); return; } // A 201 response indicates the chunk 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); CkFileAccessW_Dispose(fac); CkAuthAzureStorageW_Dispose(azAuth); CkStringBuilderW_Dispose(sbFileSize); CkStringBuilderW_Dispose(sbRange); CkStringBuilderW_Dispose(sbResponseBody); CkBinDataW_Dispose(bdFileData); return; } wprintf(L"Uploaded chunk from %d to %d\n",curIndex,curIndex + chunkSize - 1); curIndex = curIndex + chunkSize; numBytesLeft = numBytesLeft - chunkSize; } CkFileAccessW_FileClose(fac); wprintf(L"success.\n"); CkRestW_Dispose(rest); CkFileAccessW_Dispose(fac); CkAuthAzureStorageW_Dispose(azAuth); CkStringBuilderW_Dispose(sbFileSize); CkStringBuilderW_Dispose(sbRange); CkStringBuilderW_Dispose(sbResponseBody); CkBinDataW_Dispose(bdFileData); } |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.