(Swift 2) SNS List Topics

List the existing SNS topics.

See SNS List Topics for more information.

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func chilkatTest() {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let rest = CkoRest()

    // Connect to the Amazon AWS REST server.
    // such as https://sns.us-west-2.amazonaws.com/
    var bTls: Bool = true
    var port: Int = 443
    var bAutoReconnect: Bool = true
    var success: Bool = rest.Connect("sns.us-west-2.amazonaws.com", port: port, tls: bTls, autoReconnect: bAutoReconnect)

    // Provide AWS credentials for the REST call.
    let authAws = CkoAuthAws()
    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", value: "ListTopics")

    var responseXml: String? = rest.FullRequestNoBody("GET", uriPath: "/")
    if rest.LastMethodSuccess != true {
        print("\(rest.LastErrorText)")
        return
    }

    // A successful response will have a status code equal to 200.
    if rest.ResponseStatusCode.intValue != 200 {
        print("response status code = \(rest.ResponseStatusCode.intValue)")
        print("response status text = \(rest.ResponseStatusText)")
        print("response header: \(rest.ResponseHeader)")
        print("response body: \(responseXml!)")
        return
    }

    // Examine the successful XML response (shown below)
    let xml = CkoXml()
    xml.LoadXml(responseXml)
    print("\(xml.GetXml())")

    // To iterate over the TopicArn's
    var notUsed: String? = xml.ChilkatPath("ListTopicsResult|Topics|$")
    var i: Int = 0
    var numTopics: Int = xml.NumChildren.intValue
    while i < numTopics {
        xml.GetChild2(i)
        print("\(xml.GetChildContent("TopicArn"))")
        xml.GetParent2()
        i = i + 1
    }

    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>

}