B4X
SQS Receive Message

Retrieves one or more messages from an Amazon SQS queue, with a maximum limit of 10 messages, from the specified queue.
See SQS ReceiveMessage or detailed information.
Chilkat B4X Downloads

B4X
Dim success As Boolean = False

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

Dim rest As ChilkatRest
rest.Initialize("rest")

'  Connect to the Amazon AWS REST server.
'  such as https://sqs.us-west-2.amazonaws.com/
Dim bTls As Boolean = True
Dim port As Int = 443
Dim bAutoReconnect As Boolean = True
success = rest.Connect("sqs.us-west-2.amazonaws.com", port, bTls, bAutoReconnect)

'  Provide AWS credentials for the REST call.
Dim authAws As ChilkatAuthAws
authAws.Initialize
authAws.AccessKey = "AWS_ACCESS_KEY"
authAws.SecretKey = "AWS_SECRET_KEY"
'  the region should match our URL above..
authAws.Region = "us-west-2"
authAws.ServiceName = "sqs"

rest.SetAuthAws(authAws)

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

'  Use the actual path part of your SQS queue URL here:
Dim responseXml As String = rest.FullRequestNoBody("GET", "/123456789123/chilkatTest")
If rest.LastMethodSuccess <> True Then
    Log(rest.LastErrorText)
    Return
End If


'  A successful response will have a status code equal to 200.
If rest.ResponseStatusCode <> 200 Then
    Log("response status code = " & rest.ResponseStatusCode)
    Log("response status text = " & rest.ResponseStatusText)
    Log("response header: " & rest.ResponseHeader)
    Log("response body: " & responseXml)
    Return
End If


'  Examine the successful XML response.
Dim xml As ChilkatXml
xml.Initialize
xml.LoadXml(responseXml)
Log(xml.GetXml)
Log("----")

'  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>
'              <Attribute>
'                  <Name>ApproximateFirstReceiveTimestamp</Name>
'                  <Value>1475013283557</Value>
'              </Attribute>
'              <Attribute>
'                  <Name>ApproximateReceiveCount</Name>
'                  <Value>4</Value>
'              </Attribute>
'              <Attribute>
'                  <Name>SentTimestamp</Name>
'                  <Value>1475013283557</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:
Log("Body: " & xml.ChilkatPath("ReceiveMessageResult|Message|Body|*"))
Log("MessageId: " & xml.ChilkatPath("ReceiveMessageResult|Message|MessageId|*"))

Dim unused As String = xml.ChilkatPath("ReceiveMessageResult|Message[0]|Attribute|$")

Dim rec As ChilkatXml = xml.FindNextRecord("Name", "SenderId")
Log("SenderId: " & rec.GetChildContent("Value"))


rec = xml.FindNextRecord("Name", "ApproximateFirstReceiveTimestamp")
Log("ApproximateFirstReceiveTimestamp: " & rec.GetChildContent("Value"))


rec = xml.FindNextRecord("Name", "ApproximateReceiveCount")
Log("ApproximateReceiveCount: " & rec.GetChildContent("Value"))


rec = xml.FindNextRecord("Name", "SentTimestamp")
Log("SentTimestamp: " & rec.GetChildContent("Value"))


xml.GetRoot2