Dart

Azure Service Bus - Create Topic

See more Azure Service Bus Examples

Creates an Azure Service Bus Topic.

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 topic named "gilaMonster";
  final topicName = 'gilaMonster';

  // 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', topicName);
  xml.updateAttrAt('content', true, 'type', 'application/xml');
  xml.updateAttrAt('content|TopicDescription', true, 'xmlns:i', 'http://www.w3.org/2001/XMLSchema-instance');
  xml.updateAttrAt('content|TopicDescription', 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">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>

  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);

  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</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>
}