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Azure Service Bus - Delete Message

See more Azure Service Bus Examples

Deletes a message from a queue or subscription.

For more information, see https://docs.microsoft.com/en-us/rest/api/servicebus/unlock-message

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Local $bSuccess = False

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

; Make the initial connection.
; A single REST object, once connected, can be used for many Azure Service Bus REST API calls.
; The auto-reconnect indicates that if the already-established HTTPS connection is closed,
; then it will be automatically re-established as needed.
$oRest = ObjCreate("Chilkat.Rest")
Local $bAutoReconnect = True
$bSuccess = $oRest.Connect("<yournamespace>.servicebus.windows.net",443,True,$bAutoReconnect)
If ($bSuccess <> True) Then
    ConsoleWrite($oRest.LastErrorText & @CRLF)
    Exit
EndIf

; Let's load a previously computed SAS token and use it.
; See Azure Shared Access Signature for an example to genenerate an Azure SAS token.
$oSbToken = ObjCreate("Chilkat.StringBuilder")
$oSbToken.LoadFile("qa_data/tokens/serviceBusSas.txt","utf-8")

; Tell the REST object to use the Azure Shared Access Signature for authorization.
$oSbToken.Prepend("SharedAccessSignature ")
$oRest.AddHeader("Authorization",$oSbToken.GetAsString())

; ----------------------------------------------------------------------------------------------
; 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..
; ----------------------------------------------------------------------------------------------

; To delete a message, we'll need either the SequenceNumber or MessageId.
; When the message was peek-locked, the SequenceNumber and MessageId of the locked message
; was returned in the HTTP response header named "BrokerProperties, which contained
; JSON such as the following:
; 
; 	{
; 	  "DeliveryCount": 1,
; 	  "EnqueuedSequenceNumber": 3000004,
; 	  "EnqueuedTimeUtc": "Wed, 07 Dec 2016 17:42:48 GMT",
; 	  "Label": "M3",
; 	  "LockToken": "6eeee205-e541-4cb6-95fb-4c81da5f6858",
; 	  "LockedUntilUtc": "Thu, 08 Dec 2016 00:57:32 GMT",
; 	  "MessageId": "e8028116d63c43f191577f2789b1cca7",
; 	  "SequenceNumber": 4,
; 	  "State": "Active",
; 	  "TimeToLive": 922337193600
; 	}
; 
; 
; The path for unlocking a message is constructed as follows, depending on
; whether it is a message on a queue or subscription:
; 
; (for a queue)
; /{queuePath}/messages/{messageId|sequenceNumber}/{lockToken}
; 
; (for a subscription)
; /{topicPath}/subscriptions/{subscriptionName}/messages/{messageId|sequenceNumber}/{lockToken}

; This example will build a path to delete a message contained in a subscription.
Local $sTopicName = "gilaMonster"
Local $subscriptionName = "feedings"
Local $sMessageId = "e8028116d63c43f191577f2789b1cca7"
Local $sLockToken = "6eeee205-e541-4cb6-95fb-4c81da5f6858"

; Build the path..
$oSbPath = ObjCreate("Chilkat.StringBuilder")
$oSbPath.Append("/{topicPath}/subscriptions/{subscriptionName}/messages/{messageId|sequenceNumber}/{lockToken}")
Local $iNumReplaced = $oSbPath.Replace("{topicPath}",$sTopicName)
$iNumReplaced = $oSbPath.Replace("{subscriptionName}",$subscriptionName)
$iNumReplaced = $oSbPath.Replace("{messageId|sequenceNumber}",$sMessageId)
$iNumReplaced = $oSbPath.Replace("{lockToken}",$sLockToken)

; Add a timeout parameter.
$oRest.AddQueryParam("timeout","20")

; Use the DELETE HTTP verb to delete the message.
$oSbResponseBody = ObjCreate("Chilkat.StringBuilder")
$bSuccess = $oRest.FullRequestNoBodySb("DELETE",$oSbPath.GetAsString(),$oSbResponseBody)
If ($bSuccess <> True) Then
    ConsoleWrite($oRest.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Response Status Code = " & $oRest.ResponseStatusCode & @CRLF)

; Check for a success response.
If ($oRest.ResponseStatusCode <> 200) Then
    ConsoleWrite($oRest.LastRequestStartLine & @CRLF)
    ConsoleWrite($oRest.LastRequestHeader & @CRLF)
    ConsoleWrite($oSbResponseBody.GetAsString() & @CRLF)
    ConsoleWrite("Failed." & @CRLF)
    Exit
EndIf

; If successful, the response body would be empty..
ConsoleWrite("Success." & @CRLF)