(Swift 3,4,5...) Azure Service Bus - Create Topic

Creates an Azure Service Bus Topic.

Note: This example requires Chilkat v9.5.0.65 or greater.

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func chilkatTest() {
    // Note: Requires Chilkat v9.5.0.65 or greater.

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

    // Make the initial connection.
    // A single REST object, once connected, can be used for many Azure Service Bus REST API calls.
    // The auto-reconnect indicates that if the already-established HTTPS connection is closed,
    // then it will be automatically re-established as needed.
    let rest = CkoRest()!
    var bAutoReconnect: Bool = true
    var success: Bool = rest.connect("<yournamespace>.servicebus.windows.net", port: 443, tls: true, autoReconnect: bAutoReconnect)
    if success != true {
        print("\(rest.lastErrorText!)")
        return
    }

    // ----------------------------------------------------------------------------------------------
    // The code above this comment could be placed inside a function/subroutine within the application
    // because the connection does not need to be made for every request.  Once the connection is made
    // the app may send many requests..
    // ----------------------------------------------------------------------------------------------

    // Let's load a previously computed SAS token and use it.
    // See Azure Shared Access Signature for an example to genenerate an Azure SAS token.
    let sbToken = CkoStringBuilder()!
    sbToken.loadFile("qa_data/tokens/serviceBusSas.txt", charset: "utf-8")

    // Tell the REST object to use the Azure Shared Access Signature for authorization.
    sbToken.prepend("SharedAccessSignature ")
    rest.addHeader("Authorization", value: sbToken.getAsString())

    // ----------------------------------------------------------------------------------------------

    // Create a new topic named "gilaMonster";
    var topicName: String? = "gilaMonster"

    // Create the XML body of the PUT request.
    let xml = CkoXml()!
    xml.tag = "entry"
    xml.addAttribute("xmlns", value: "http://www.w3.org/2005/Atom")
    xml.updateAttr(at: "title", autoCreate: true, attrName: "type", attrValue: "text")
    xml.updateChildContent("title", value: topicName)
    xml.updateAttr(at: "content", autoCreate: true, attrName: "type", attrValue: "application/xml")
    xml.updateAttr(at: "content|TopicDescription", autoCreate: true, attrName: "xmlns:i", attrValue: "http://www.w3.org/2001/XMLSchema-instance")
    xml.updateAttr(at: "content|TopicDescription", autoCreate: true, attrName: "xmlns", attrValue: "http://schemas.microsoft.com/netservices/2010/10/servicebus/connect")
    xml.emitXmlDecl = false
    print("\(xml.getXml()!)")

    // The XML created by the above code:

    // 	<entry xmlns="http://www.w3.org/2005/Atom">
    // 	    <title type="text">gilaMonster</title>
    // 	    <content type="application/xml">
    // 	        <TopicDescription xmlns:i="http://www.w3.org/2001/XMLSchema-instance" 
    // 			xmlns="http://schemas.microsoft.com/netservices/2010/10/servicebus/connect" />
    // 	    </content>
    // 	</entry>

    let sbRequestBody = CkoStringBuilder()!
    xml.getSb(sbRequestBody)

    // The path should be set to the to-be-created queue name.
    let sbPath = CkoStringBuilder()!
    sbPath.append("/")
    sbPath.append(topicName)

    let sbResponseBody = CkoStringBuilder()!
    success = rest.fullRequestSb("PUT", uriPath: sbPath.getAsString(), requestBody: sbRequestBody, responseBody: sbResponseBody)
    if success != true {
        print("\(rest.lastErrorText!)")
        return
    }

    print("Response Status Code = \(rest.responseStatusCode.intValue)")

    // Check for a success response.
    if rest.responseStatusCode.intValue != 201 {
        print("\(rest.lastRequestStartLine!)")
        print("\(rest.lastRequestHeader!)")
        print("\(sbResponseBody.getAsString()!)")
        print("Failed.")
        return
    }

    // The response is XML.  (See a sample response below..)
    xml.loadSb(sbResponseBody, autoTrim: true)
    print("\(xml.getXml()!)")

    print("Success.")

    // -----------------------------------------------
    // A sample successful XML response:

    // 	<entry xmlns="http://www.w3.org/2005/Atom">
    // 	    <id>https://chilkat.servicebus.windows.net/gilaMonster</id>
    // 	    <title type="text">gilaMonster</title>
    // 	    <published>2016-12-06T23:34:13Z</published>
    // 	    <updated>2016-12-06T23:34:13Z</updated>
    // 	    <author>
    // 	        <name>chilkat</name>
    // 	    </author>
    // 	    <link rel="self" href="https://chilkat.servicebus.windows.net/gilaMonster" />
    // 	    <content type="application/xml">
    // 	        <TopicDescription xmlns="http://schemas.microsoft.com/netservices/2010/10/servicebus/connect" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
    // 	            <DefaultMessageTimeToLive>P10675199DT2H48M5.4775807S</DefaultMessageTimeToLive>
    // 	            <MaxSizeInMegabytes>1024</MaxSizeInMegabytes>
    // 	            <RequiresDuplicateDetection>false</RequiresDuplicateDetection>
    // 	            <DuplicateDetectionHistoryTimeWindow>PT10M</DuplicateDetectionHistoryTimeWindow>
    // 	            <EnableBatchedOperations>true</EnableBatchedOperations>
    // 	            <SizeInBytes>0</SizeInBytes>
    // 	            <CreatedAt>2016-12-06T23:34:13.483</CreatedAt>
    // 	            <UpdatedAt>2016-12-06T23:34:13.7</UpdatedAt>
    // 	        </TopicDescription>
    // 	    </content>
    // 	</entry>

}