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REST Asynchronous Streaming Upload File

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Demonstrates how to asynchronous streaming upload a file to cloud storage. This particular example demonstrates an upload to the Azure Cloud Storage service. The same concepts apply to S3, Google Cloud, and Google Drive. AutoIt

Local $bSuccess = False

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

$oRest = ObjCreate("Chilkat.Rest")

; Connect to the Azure Storage Blob Service
Local $bTls = True
Local $iPort = 443
Local $bAutoReconnect = True
; In this example, the storage account name is "chilkat".
$bSuccess = $oRest.Connect("chilkat.blob.core.windows.net",$iPort,$bTls,$bAutoReconnect)
If ($bSuccess <> True) Then
    ConsoleWrite($oRest.LastErrorText & @CRLF)
    Exit
EndIf

; Provide Azure Cloud credentials for the REST call.
$oAzAuth = ObjCreate("Chilkat.AuthAzureStorage")
$oAzAuth.AccessKey = "AZURE_ACCESS_KEY"
; The account name used here should match the 1st part of the domain passed in the call to Connect (above).
$oAzAuth.Account = "chilkat"
$oAzAuth.Scheme = "SharedKey"
$oAzAuth.Service = "Blob"
; This causes the "x-ms-version: 2021-08-06" header to be automatically added.
$oAzAuth.XMsVersion = "2021-08-06"
$bSuccess = $oRest.SetAuthAzureStorage($oAzAuth)

; Set some request headers.
$bSuccess = $oRest.AddHeader("x-ms-blob-content-disposition","attachment; filename=""thisIsATest.txt""")
$bSuccess = $oRest.AddHeader("x-ms-blob-type","BlockBlob")
$bSuccess = $oRest.AddHeader("x-ms-meta-m1","v1")
$bSuccess = $oRest.AddHeader("x-ms-meta-m2","v2")

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

$oSendStream = ObjCreate("Chilkat.Stream")

; Define the source data for the stream to be a file.
$oSendStream.SourceFile = "qa_data/hamlet.xml"

; Create a background thread task to upload from the stream
; The name of the Azure storage container is "test".
Local $oTask = $oRest.FullRequestStreamAsync("PUT","/test/thisIsATest.txt",$oSendStream)

; Start the task. 
$bSuccess = $oTask.Run()

; In this example, we'll simply sleep and periodically
; check to see if the REST upload if finished.
Local $iCurPctDone = 0
While $oTask.Finished <> True
    $oTask.SleepMs 100
Wend

; Check to see if the call to FullRequestStream in the background thread pool succeeded.
If ($oTask.TaskSuccess <> True) Then
    ; Show what would've been the LastErrorText had FullRequestStream been called synchronously
    ConsoleWrite($oTask.ResultErrorText & @CRLF)

    Exit
EndIf

Local $iResponseStatusCode = $oRest.ResponseStatusCode

; When successful, the Azure Storage service will respond with a 201 response code,
; with an empty body.  Therefore, in the success condition, the responseStr is empty.
If ($iResponseStatusCode = 201) Then
    ConsoleWrite("File uploaded." & @CRLF)
Else
    ; It failed, so examine the response body, if one was returned:
    ; Given that FullRequestStream returns a string, the return value is obtained via GetResultString.
Local $sResponseBodyStr = $oTask.GetResultString()
    ConsoleWrite("response body (if any): " & $sResponseBodyStr & @CRLF)

    ; Examine the request/response to see what happened.
    ConsoleWrite("response status code = " & $oRest.ResponseStatusCode & @CRLF)
    ConsoleWrite("response status text = " & $oRest.ResponseStatusText & @CRLF)
    ConsoleWrite("response header: " & $oRest.ResponseHeader & @CRLF)
    ConsoleWrite("---" & @CRLF)
    ConsoleWrite("LastRequestStartLine: " & $oRest.LastRequestStartLine & @CRLF)
    ConsoleWrite("LastRequestHeader: " & $oRest.LastRequestHeader & @CRLF)
EndIf