Visual FoxPro

SNS List Topics

See more Amazon SNS Examples

List the existing SNS topics.

See SNS List Topics for more information.

Visual FoxPro

LOCAL lnSuccess
LOCAL loRest
LOCAL lnBTls
LOCAL lnPort
LOCAL lnBAutoReconnect
LOCAL loAuthAws
LOCAL lcResponseXml
LOCAL loXml
LOCAL lcNotUsed
LOCAL i
LOCAL lnNumTopics

lnSuccess = 0

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

loRest = CreateObject('Chilkat.Rest')

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

* Provide AWS credentials for the REST call.
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 = "sns"

loRest.SetAuthAws(loAuthAws)

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

lcResponseXml = loRest.FullRequestNoBody("GET","/")
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 (shown below)
loXml = CreateObject('Chilkat.Xml')
loXml.LoadXml(lcResponseXml)
? loXml.GetXml()

* To iterate over the TopicArn's
lcNotUsed = loXml.ChilkatPath("ListTopicsResult|Topics|$")
i = 0
lnNumTopics = loXml.NumChildren
DO WHILE i < lnNumTopics
    loXml.GetChild2(i)
    ? loXml.GetChildContent("TopicArn")
    loXml.GetParent2()
    i = i + 1
ENDDO
loXml.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>

RELEASE loRest
RELEASE loAuthAws
RELEASE loXml