Dart

Azure Service Bus - Create Subscription

See more Azure Service Bus Examples

Creates an Azure Service Bus Subscription.

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

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // 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.
  final rest = CkRest();
  final bAutoReconnect = true;
  try {
    rest.connect('<yournamespace>.servicebus.windows.net', 443, true, bAutoReconnect);
  } on ChilkatException catch (e) {
    print(e.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.
  final sbToken = CkStringBuilder();
  sbToken.loadFile('qa_data/tokens/serviceBusSas.txt', 'utf-8');

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

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

  // Create a new subscription named "feedings";
  final topicName = 'gilaMonster';
  final subscriptionName = 'feedings';

  // Create the XML body of the PUT request.
  final xml = CkXml();
  xml.tag = 'entry';
  xml.addAttribute('xmlns', 'http://www.w3.org/2005/Atom');
  xml.updateAttrAt('title', true, 'type', 'text');
  xml.updateChildContent('title', subscriptionName);
  xml.updateAttrAt('content', true, 'type', 'application/xml');
  xml.updateAttrAt('content|SubscriptionDescription', true, 'xmlns:i', 'http://www.w3.org/2001/XMLSchema-instance');
  xml.updateAttrAt('content|SubscriptionDescription', true, 'xmlns', '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">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>

  final sbRequestBody = CkStringBuilder();
  xml.getXmlSb(sbRequestBody);

  // The path should be set to the to-be-created queue name.
  final sbPath = CkStringBuilder();
  sbPath.append('/');
  sbPath.append(topicName);
  sbPath.append('/Subscriptions/');
  sbPath.append(subscriptionName);

  final sbResponseBody = CkStringBuilder();
  try {
    rest.fullRequestSb('PUT', sbPath.getAsString(), sbRequestBody, sbResponseBody);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('Response Status Code = ${rest.responseStatusCode}');

  // Check for a success response.
  if (rest.responseStatusCode != 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, 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/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>
}