(Lianja) Azure Service Bus - Create Subscription

Creates an Azure Service Bus Subscription.

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

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// 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.
loRest = createobject("CkRest")
llBAutoReconnect = .T.
llSuccess = loRest.Connect("<yournamespace>.servicebus.windows.net",443,.T.,llBAutoReconnect)
if (llSuccess <> .T.) then
    ? loRest.LastErrorText
    release loRest
    return
endif

// ----------------------------------------------------------------------------------------------
// 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.
loSbToken = createobject("CkStringBuilder")
loSbToken.LoadFile("qa_data/tokens/serviceBusSas.txt","utf-8")

// Tell the REST object to use the Azure Shared Access Signature for authorization.
loSbToken.Prepend("SharedAccessSignature ")
loRest.AddHeader("Authorization",loSbToken.GetAsString())

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

// Create a new subscription named "feedings";
lcTopicName = "gilaMonster"
lcSubscriptionName = "feedings"

// Create the XML body of the PUT request.
loXml = createobject("CkXml")
loXml.Tag = "entry"
loXml.AddAttribute("xmlns","http://www.w3.org/2005/Atom")
loXml.UpdateAttrAt("title",.T.,"type","text")
loXml.UpdateChildContent("title",lcSubscriptionName)
loXml.UpdateAttrAt("content",.T.,"type","application/xml")
loXml.UpdateAttrAt("content|SubscriptionDescription",.T.,"xmlns:i","http://www.w3.org/2001/XMLSchema-instance")
loXml.UpdateAttrAt("content|SubscriptionDescription",.T.,"xmlns","http://schemas.microsoft.com/netservices/2010/10/servicebus/connect")
loXml.EmitXmlDecl = .F.
? loXml.GetXml()

// The XML created by the above code:

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

loSbRequestBody = createobject("CkStringBuilder")
loXml.GetXmlSb(loSbRequestBody)

// The path should be set to the to-be-created queue name.
loSbPath = createobject("CkStringBuilder")
loSbPath.Append("/")
loSbPath.Append(lcTopicName)
loSbPath.Append("/Subscriptions/")
loSbPath.Append(lcSubscriptionName)

loSbResponseBody = createobject("CkStringBuilder")
llSuccess = loRest.FullRequestSb("PUT",loSbPath.GetAsString(),loSbRequestBody,loSbResponseBody)
if (llSuccess <> .T.) then
    ? loRest.LastErrorText
    release loRest
    release loSbToken
    release loXml
    release loSbRequestBody
    release loSbPath
    release loSbResponseBody
    return
endif

? "Response Status Code = " + str(loRest.ResponseStatusCode)

// Check for a success response.
if (loRest.ResponseStatusCode <> 201) then
    ? loRest.LastRequestStartLine
    ? loRest.LastRequestHeader
    ? loSbResponseBody.GetAsString()
    ? "Failed."
    release loRest
    release loSbToken
    release loXml
    release loSbRequestBody
    release loSbPath
    release loSbResponseBody
    return
endif

// The response is XML.  (See a sample response below..)
loXml.LoadSb(loSbResponseBody,.T.)
? loXml.GetXml()

? "Success."

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

// 	<entry xmlns="http://www.w3.org/2005/Atom">
// 	    <id>https://chilkat.servicebus.windows.net/gilaMonster/Subscriptions/feedings</id>
// 	    <title type="text">feedings</title>
// 	    <published>2016-12-07T16:02:24Z</published>
// 	    <updated>2016-12-07T16:02:24Z</updated>
// 	    <link rel="self" href="https://chilkat.servicebus.windows.net/gilaMonster/Subscriptions/feedings" />
// 	    <content type="application/xml">
// 	        <SubscriptionDescription xmlns="http://schemas.microsoft.com/netservices/2010/10/servicebus/connect" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
// 	            <LockDuration>PT1M</LockDuration>
// 	            <RequiresSession>false</RequiresSession>
// 	            <DefaultMessageTimeToLive>P10675199DT2H48M5.4775807S</DefaultMessageTimeToLive>
// 	            <DeadLetteringOnMessageExpiration>false</DeadLetteringOnMessageExpiration>
// 	            <DeadLetteringOnFilterEvaluationExceptions>true</DeadLetteringOnFilterEvaluationExceptions>
// 	            <MessageCount>0</MessageCount>
// 	            <MaxDeliveryCount>10</MaxDeliveryCount>
// 	            <EnableBatchedOperations>true</EnableBatchedOperations>
// 	        </SubscriptionDescription>
// 	    </content>
// 	</entry>


release loRest
release loSbToken
release loXml
release loSbRequestBody
release loSbPath
release loSbResponseBody