(Visual FoxPro) SQS Delete Message

Deletes a message from an SQS queue. You specify the message by using the message's receipt handle and not the message ID you received when you sent the message. This example will first receive a message, and then use the receipt handle to delete it.

See SQS DeleteMessage or detailed information.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

LOCAL loRest
LOCAL lnBTls
LOCAL lnPort
LOCAL lnBAutoReconnect
LOCAL lnSuccess
LOCAL loAuthAws
LOCAL lcResponseXml
LOCAL loXml
LOCAL lcReceiptHandle

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

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Rest')
loRest = CreateObject('Chilkat.Rest')

* Connect to the Amazon AWS REST server.
* such as https://sqs.us-west-2.amazonaws.com/
lnBTls = 1
lnPort = 443
lnBAutoReconnect = 1
lnSuccess = loRest.Connect("sqs.us-west-2.amazonaws.com",lnPort,lnBTls,lnBAutoReconnect)

* Provide AWS credentials for the REST call.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.AuthAws')
loAuthAws = CreateObject('Chilkat.AuthAws')
loAuthAws.AccessKey = "AWS_ACCESS_KEY"
loAuthAws.SecretKey = "AWS_SECRET_KEY"
* the region should match our URL above..
loAuthAws.Region = "us-west-2"
loAuthAws.ServiceName = "sqs"

loRest.SetAuthAws(loAuthAws)

loRest.AddQueryParam("Action","ReceiveMessage")
loRest.AddQueryParam("MaxNumberOfMessages","5")
loRest.AddQueryParam("VisibilityTimeout","15")
loRest.AddQueryParam("AttributeName","All")
loRest.AddQueryParam("MessageAttributeName","All")

* Use the actual path part of your SQS queue URL here:
lcResponseXml = loRest.FullRequestNoBody("GET","/123456789123/chilkatTest")
IF (loRest.LastMethodSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    RELEASE loAuthAws
    CANCEL
ENDIF

* A successful response will have a status code equal to 200.
IF (loRest.ResponseStatusCode <> 200) THEN
    ? "response status code = " + STR(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response body: " + lcResponseXml
    RELEASE loRest
    RELEASE loAuthAws
    CANCEL
ENDIF

* Examine the successful XML response.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Xml')
loXml = CreateObject('Chilkat.Xml')
loXml.LoadXml(lcResponseXml)

* A successful response looks like this:
* <?xml version="1.0" encoding="utf-8" ?>
* <ReceiveMessageResponse xmlns="http://queue.amazonaws.com/doc/2012-11-05/">
*     <ReceiveMessageResult>
*         <Message>
*             <Body>this is a test</Body>
*             <MD5OfBody>54b0c58c7ce9f2a8b551351102ee0938</MD5OfBody>
*             <ReceiptHandle>AQEBMyLof...UbKBTvHtEg==</ReceiptHandle>
*             <Attribute>
*                 <Name>SenderId</Name>
*                 <Value>957491831129</Value>
*             </Attribute>
* ...
* ...
*             <MessageId>52882c65-5e21-4450-9024-93a3b01e61d3</MessageId>
*             <MD5OfMessageAttributes>2ff68603f4239272bd03f543254ed040</MD5OfMessageAttributes>
*         </Message>
*     </ReceiveMessageResult>
*     <ResponseMetadata>
*         <RequestId>05ba5c92-80ee-5f87-be76-0cf67b7475d6</RequestId>
*     </ResponseMetadata>
* </ReceiveMessageResponse>

* Get some values from the XML:
lcReceiptHandle = loXml.ChilkatPath("ReceiveMessageResult|Message|ReceiptHandle|*")
? "ReceiptHandle = " + lcReceiptHandle

* Now use the receipt handle to delete the message.
* Use the same connection (or automatically reconnect if needed)
loRest.ClearAllQueryParams()

loRest.AddQueryParam("Action","DeleteMessage")
loRest.AddQueryParam("ReceiptHandle",lcReceiptHandle)

* Use the actual path part of your SQS queue URL here:
lcResponseXml = loRest.FullRequestNoBody("GET","/123456789123/chilkatTest")
IF (loRest.LastMethodSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    RELEASE loAuthAws
    RELEASE loXml
    CANCEL
ENDIF

* A successful response will have a status code equal to 200.
IF (loRest.ResponseStatusCode <> 200) THEN
    ? "response status code = " + STR(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response body: " + lcResponseXml
    RELEASE loRest
    RELEASE loAuthAws
    RELEASE loXml
    CANCEL
ENDIF

* Examine the successful XML response.
loXml.LoadXml(lcResponseXml)
? loXml.GetXml()

* A successful DeleteMessage response looks like this:
* <DeleteMessageResponse>
*     <ResponseMetadata>
*         <RequestId>
*             b5293cb5-d306-4a17-9048-b263635abe42
*         </RequestId>
*     </ResponseMetadata>
* </DeleteMessageResponse>

RELEASE loRest
RELEASE loAuthAws
RELEASE loXml