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(PureBasic) Azure File Service: Upload FileSample 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.
IncludeFile "CkBinData.pb" IncludeFile "CkStringBuilder.pb" IncludeFile "CkRest.pb" IncludeFile "CkAuthAzureStorage.pb" Procedure ChilkatExample() ; 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.i = CkRest::ckCreate() If rest.i = 0 Debug "Failed to create object." ProcedureReturn EndIf ; Connect to the Azure Storage Blob Service bTls.i = 1 port.i = 443 bAutoReconnect.i = 1 ; In this example, the storage account name is "chilkat". success.i = CkRest::ckConnect(rest,"chilkat.file.core.windows.net",port,bTls,bAutoReconnect) If success <> 1 Debug CkRest::ckLastErrorText(rest) CkRest::ckDispose(rest) ProcedureReturn EndIf ; This example will upload a relatively small file (760K), so it may as well ; just be load it into memory.. jpgData.i = CkBinData::ckCreate() If jpgData.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkBinData::ckLoadFile(jpgData,"qa_data/jpg/penguins.jpg") ; Provide Azure Cloud credentials for the REST calls. azAuth.i = CkAuthAzureStorage::ckCreate() If azAuth.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkAuthAzureStorage::setCkAccessKey(azAuth, "AZURE_ACCESS_KEY") ; The account name used here should match the 1st part of the domain passed in the call to Connect (above). CkAuthAzureStorage::setCkAccount(azAuth, "chilkat") CkAuthAzureStorage::setCkScheme(azAuth, "SharedKey") CkAuthAzureStorage::setCkService(azAuth, "File") ; This causes the "x-ms-version: 2021-08-06" header to be automatically added. CkAuthAzureStorage::setCkXMsVersion(azAuth, "2021-08-06") success = CkRest::ckSetAuthAzureStorage(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: CkRest::ckAddHeader(rest,"x-ms-type","file") ; This required header specifies the final size of the file (or the maximum size it can be). sbFileSize.i = CkStringBuilder::ckCreate() If sbFileSize.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkStringBuilder::ckAppendInt(sbFileSize,CkBinData::ckNumBytes(jpgData)) CkRest::ckAddHeader(rest,"x-ms-content-length",CkStringBuilder::ckGetAsString(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.s = CkRest::ckFullRequestNoBody(rest,"PUT","/pip/wildlife/antarctic/penguins.jpg") If CkRest::ckLastMethodSuccess(rest) <> 1 Debug CkRest::ckLastErrorText(rest) CkRest::ckDispose(rest) CkBinData::ckDispose(jpgData) CkAuthAzureStorage::ckDispose(azAuth) CkStringBuilder::ckDispose(sbFileSize) ProcedureReturn EndIf ; 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 CkRest::ckResponseStatusCode(rest) <> 201 ; Examine the request/response to see what happened. Debug "response status code = " + Str(CkRest::ckResponseStatusCode(rest)) Debug "response status text = " + CkRest::ckResponseStatusText(rest) Debug "response header: " + CkRest::ckResponseHeader(rest) Debug "response body (if any): " + responseStr Debug "---" Debug "LastRequestStartLine: " + CkRest::ckLastRequestStartLine(rest) Debug "LastRequestHeader: " + CkRest::ckLastRequestHeader(rest) CkRest::ckDispose(rest) CkBinData::ckDispose(jpgData) CkAuthAzureStorage::ckDispose(azAuth) CkStringBuilder::ckDispose(sbFileSize) ProcedureReturn EndIf Debug "Successfully created penguins.jpg" ; -------------------------------------------------------------------------------- ; Upload the file data... ; Make sure the headers from the "Create File" operation are removed. CkRest::ckClearAllHeaders(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.i = CkStringBuilder::ckCreate() If sbRange.i = 0 Debug "Failed to create object." ProcedureReturn EndIf CkStringBuilder::ckAppend(sbRange,"bytes=0-") CkStringBuilder::ckAppendInt(sbRange,CkBinData::ckNumBytes(jpgData) - 1) CkRest::ckAddHeader(rest,"x-ms-range",CkStringBuilder::ckGetAsString(sbRange)) ; The x-ms-write header is also required: CkRest::ckAddHeader(rest,"x-ms-write","update") sbResponseBody.i = CkStringBuilder::ckCreate() If sbResponseBody.i = 0 Debug "Failed to create object." ProcedureReturn EndIf ; IMPORTANT: Don't forget the "?comp=range" at the end of the path passed in the 2nd argument. success = CkRest::ckFullRequestBd(rest,"PUT","/pip/wildlife/antarctic/penguins.jpg?comp=range",jpgData,sbResponseBody) If success <> 1 ; This would indicate a failure where no response was received. Debug CkRest::ckLastErrorText(rest) CkRest::ckDispose(rest) CkBinData::ckDispose(jpgData) CkAuthAzureStorage::ckDispose(azAuth) CkStringBuilder::ckDispose(sbFileSize) CkStringBuilder::ckDispose(sbRange) CkStringBuilder::ckDispose(sbResponseBody) ProcedureReturn EndIf ; A 201 response indicates the data was uploaded. If CkRest::ckResponseStatusCode(rest) <> 201 ; Examine the request/response to see what happened. Debug "response status code = " + Str(CkRest::ckResponseStatusCode(rest)) Debug "response status text = " + CkRest::ckResponseStatusText(rest) Debug "response header: " + CkRest::ckResponseHeader(rest) Debug "response body (if any): " + responseStr Debug "---" Debug "LastRequestStartLine: " + CkRest::ckLastRequestStartLine(rest) Debug "LastRequestHeader: " + CkRest::ckLastRequestHeader(rest) CkRest::ckDispose(rest) CkBinData::ckDispose(jpgData) CkAuthAzureStorage::ckDispose(azAuth) CkStringBuilder::ckDispose(sbFileSize) CkStringBuilder::ckDispose(sbRange) CkStringBuilder::ckDispose(sbResponseBody) ProcedureReturn EndIf Debug "Successfully uploaded data into penguins.jpg" CkRest::ckDispose(rest) CkBinData::ckDispose(jpgData) CkAuthAzureStorage::ckDispose(azAuth) CkStringBuilder::ckDispose(sbFileSize) CkStringBuilder::ckDispose(sbRange) CkStringBuilder::ckDispose(sbResponseBody) ProcedureReturn EndProcedure |
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