B4X

SNS List Topics

See more Amazon SNS Examples

List the existing SNS topics.

See SNS List Topics for more information.

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://sns.us-west-2.amazonaws.com/
Dim bTls As Boolean = True
Dim port As Int = 443
Dim bAutoReconnect As Boolean = True
success = rest.Connect("sns.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 = "sns"

rest.SetAuthAws(authAws)

rest.AddQueryParam("Action", "ListTopics")

Dim responseXml As String = rest.FullRequestNoBody("GET", "/")
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 (shown below)
Dim xml As ChilkatXml
xml.Initialize
xml.LoadXml(responseXml)
Log(xml.GetXml)

'  To iterate over the TopicArn's
Dim notUsed As String = xml.ChilkatPath("ListTopicsResult|Topics|$")
Dim i As Int = 0
Dim numTopics As Int = xml.NumChildren
Do While i < numTopics
    xml.GetChild2(i)
    Log(xml.GetChildContent("TopicArn"))
    xml.GetParent2
    i = i + 1
Loop
xml.GetRoot2

'  A sample successful response:
'  <?xml version="1.0" encoding="utf-8" ?>
'  <ListTopicsResponse xmlns="http://sns.amazonaws.com/doc/2010-03-31/">
'      <ListTopicsResult>
'          <Topics>
'              <member>
'                  <TopicArn>arn:aws:sns:us-west-2:957491831129:chilkat</TopicArn>
'              </member>
'              <member>
'                  <TopicArn>arn:aws:sns:us-west-2:957491831129:chilkat123</TopicArn>
'              </member>
'              <member>
'                  <TopicArn>arn:aws:sns:us-west-2:957491831129:chilkatses</TopicArn>
'              </member>
'          </Topics>
'      </ListTopicsResult>
'      <ResponseMetadata>
'          <RequestId>54514f94-b07d-5f0b-9c8a-1ff85ff4ac65</RequestId>
'      </ResponseMetadata>
'  </ListTopicsResponse>