Xbase++

Upload using Azure Storage Account Shared Access Signature (SAS) Authorization

See more Azure Cloud Storage Examples

Sample code to upload binary bytes to a block blob in Azure Cloud Storage using an Azure Storage Account Shared Access Signature (SAS) Authorization. This creates a block blob, or replaces an existing block blob.

Note: The maximum size of a block blob created by uploading in a single step is 64MB. For larger files, the upload must be broken up into blocks. There is another Chilkat example for that..

Note: This example requires Chilkat v9.5.0.65 or later.

Xbase++

LOCAL nSuccess
LOCAL oRest
LOCAL nBTls
LOCAL nPort
LOCAL nBAutoReconnect
LOCAL oSbToken
LOCAL oBinData
LOCAL oSbResponse

nSuccess := 0

//  Note: This example requires Chilkat v9.5.0.65 or greater.

//  Azure Blob Service Example: Upload binary bytes to a block blob.
//  This uses a Shared Access Signature (SAS) for Authorization.
//  This creates a new block blob or replaces an existing one in its entirety.
//  See also: https://msdn.microsoft.com/en-us/library/azure/dd179451.aspx

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

oRest := CreateObject("Chilkat.Rest")

//  Connect to the Azure Storage Blob Service
nBTls := 1
nPort := 443
nBAutoReconnect := 1
//  In this example, the storage account name is "chilkat".
nSuccess := oRest:Connect("chilkat.blob.core.windows.net", nPort, nBTls, nBAutoReconnect)
IF (nSuccess != 1)
    ? oRest:LastErrorText
    oRest:destroy()
    RETURN
ENDIF

//  ----------------------------------------------------------------------------------------------
//  The code above this comment could be placed inside a function/subroutine within the application
//  because the connection does not need to be made for every request.  Once the connection is made
//  the app may send many requests..
//  ----------------------------------------------------------------------------------------------

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

//  Let's load a previously computed Azure Storage Account SAS token and use it.
//  See How to Create an Azure Storage Account Shared Access Signature
oSbToken := CreateObject("Chilkat.StringBuilder")
nSuccess := oSbToken:LoadFile("qa_data/tokens/azureStorageAccountSas.txt", "utf-8")
IF (nSuccess != 1)
    ? "Failed to load SAS token."
    oRest:destroy()
    oSbToken:destroy()
    RETURN
ENDIF

//  Add the Shared Access Signature query params for authorization.
oRest:AddQueryParams(oSbToken:GetAsString())

//  IMPORTANT: Make sure to set the x-ms-blob-type header:
nSuccess := oRest:AddHeader("x-ms-blob-type", "BlockBlob")

//  IMPORTANT: Make sure to add the x-ms-date header.
//  When the header name is "x-ms-date", Chilkat will recognize the keyword "NOW" 
//  and will substitute the current system date/time formatted as required by Microsoft.
nSuccess := oRest:AddHeader("x-ms-date", "NOW")

//  For this example, we'll just load a JPG file into memory..
oBinData := CreateObject("Chilkat.BinData")
nSuccess := oBinData:LoadFile("qa_data/jpg/starfish.jpg")
IF (nSuccess != 1)
    ? "Failed to load JPG file."
    oRest:destroy()
    oSbToken:destroy()
    oBinData:destroy()
    RETURN
ENDIF

//  Note: The maximum size of a block blob created by uploading in a single step is 64MB.  
//  For larger files, the upload must be broken up into blocks.  There is another Chilkat example for that..
oSbResponse := CreateObject("Chilkat.StringBuilder")
nSuccess := oRest:FullRequestBd("PUT", "/mycontainer/starfish.jpg", oBinData, oSbResponse)
IF (nSuccess != 1)
    ? oRest:LastErrorText
    oRest:destroy()
    oSbToken:destroy()
    oBinData:destroy()
    oSbResponse:destroy()
    RETURN
ENDIF

//  When successful, the Azure Storage service will respond with a 201 response status code,
//  with no response body.
IF (oRest:ResponseStatusCode != 201)
    //  Examine the request/response to see what happened.
    ? "response status code = " + Str(oRest:ResponseStatusCode)
    ? "response status text = " + oRest:ResponseStatusText
    ? "response header: " + oRest:ResponseHeader
    ? "response body (if any): " + oSbResponse:GetAsString()
    ? "---"
    ? "LastRequestStartLine: " + oRest:LastRequestStartLine
    ? "LastRequestHeader: " + oRest:LastRequestHeader
    ? "Failed."
    oRest:destroy()
    oSbToken:destroy()
    oBinData:destroy()
    oSbResponse:destroy()
    RETURN
ENDIF

? "Success."

oRest:destroy()
oSbToken:destroy()
oBinData:destroy()
oSbResponse:destroy()