B4X

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.

B4X

Dim success As Boolean = False

'  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.
Dim rest As ChilkatRest
rest.Initialize("rest")
Dim bAutoReconnect As Boolean = True
success = rest.Connect("<yournamespace>.servicebus.windows.net", 443, True, bAutoReconnect)
If success <> True Then
    Log(rest.LastErrorText)
    Return
End If


'  ----------------------------------------------------------------------------------------------
'  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.
Dim sbToken As ChilkatStringBuilder
sbToken.Initialize
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";
Dim topicName As String = "gilaMonster"

'  Create the XML body of the PUT request.
Dim xml As ChilkatXml
xml.Initialize
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
Log(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>

Dim sbRequestBody As ChilkatStringBuilder
sbRequestBody.Initialize
xml.GetXmlSb(sbRequestBody)

'  The path should be set to the to-be-created queue name.
Dim sbPath As ChilkatStringBuilder
sbPath.Initialize
sbPath.Append("/")
sbPath.Append(topicName)

Dim sbResponseBody As ChilkatStringBuilder
sbResponseBody.Initialize
success = rest.FullRequestSb("PUT", sbPath.GetAsString, sbRequestBody, sbResponseBody)
If success <> True Then
    Log(rest.LastErrorText)
    Return
End If


Log("Response Status Code = " & rest.ResponseStatusCode)

'  Check for a success response.
If rest.ResponseStatusCode <> 201 Then
    Log(rest.LastRequestStartLine)
    Log(rest.LastRequestHeader)
    Log(sbResponseBody.GetAsString)
    Log("Failed.")
    Return
End If


'  The response is XML.  (See a sample response below..)
xml.LoadSb(sbResponseBody, True)
Log(xml.GetXml)

Log("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>