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Visual FoxPro

Azure Service Bus - Create Subscription

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Creates an Azure Service Bus Subscription.

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

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LOCAL lnSuccess
LOCAL loRest
LOCAL lnBAutoReconnect
LOCAL loSbToken
LOCAL lcTopicName
LOCAL lcSubscriptionName
LOCAL loXml
LOCAL loSbRequestBody
LOCAL loSbPath
LOCAL loSbResponseBody

lnSuccess = 0

* 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('Chilkat.Rest')
lnBAutoReconnect = 1
lnSuccess = loRest.Connect("<yournamespace>.servicebus.windows.net",443,1,lnBAutoReconnect)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    CANCEL
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('Chilkat.StringBuilder')
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('Chilkat.Xml')
loXml.Tag = "entry"
loXml.AddAttribute("xmlns","http://www.w3.org/2005/Atom")
loXml.UpdateAttrAt("title",1,"type","text")
loXml.UpdateChildContent("title",lcSubscriptionName)
loXml.UpdateAttrAt("content",1,"type","application/xml")
loXml.UpdateAttrAt("content|SubscriptionDescription",1,"xmlns:i","http://www.w3.org/2001/XMLSchema-instance")
loXml.UpdateAttrAt("content|SubscriptionDescription",1,"xmlns","http://schemas.microsoft.com/netservices/2010/10/servicebus/connect")
loXml.EmitXmlDecl = 0
? 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('Chilkat.StringBuilder')
loXml.GetXmlSb(loSbRequestBody)

* The path should be set to the to-be-created queue name.
loSbPath = CreateObject('Chilkat.StringBuilder')
loSbPath.Append("/")
loSbPath.Append(lcTopicName)
loSbPath.Append("/Subscriptions/")
loSbPath.Append(lcSubscriptionName)

loSbResponseBody = CreateObject('Chilkat.StringBuilder')
lnSuccess = loRest.FullRequestSb("PUT",loSbPath.GetAsString(),loSbRequestBody,loSbResponseBody)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    RELEASE loSbToken
    RELEASE loXml
    RELEASE loSbRequestBody
    RELEASE loSbPath
    RELEASE loSbResponseBody
    CANCEL
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
    CANCEL
ENDIF

* The response is XML.  (See a sample response below..)
loXml.LoadSb(loSbResponseBody,1)
? 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