Objective-C

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.

Objective-C

#import <CkoRest.h>
#import <CkoStringBuilder.h>
#import <NSString.h>
#import <CkoXml.h>

BOOL success = NO;

// 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.
CkoRest *rest = [[CkoRest alloc] init];
BOOL bAutoReconnect = YES;
success = [rest Connect: @"<yournamespace>.servicebus.windows.net" port: [NSNumber numberWithInt: 443] tls: YES autoReconnect: bAutoReconnect];
if (success != YES) {
    NSLog(@"%@",rest.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.
CkoStringBuilder *sbToken = [[CkoStringBuilder alloc] init];
[sbToken LoadFile: @"qa_data/tokens/serviceBusSas.txt" charset: @"utf-8"];

// Tell the REST object to use the Azure Shared Access Signature for authorization.
[sbToken Prepend: @"SharedAccessSignature "];
[rest AddHeader: @"Authorization" value: [sbToken GetAsString]];

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

// Create a new subscription named "feedings";
NSString *topicName = @"gilaMonster";
NSString *subscriptionName = @"feedings";

// Create the XML body of the PUT request.
CkoXml *xml = [[CkoXml alloc] init];
xml.Tag = @"entry";
[xml AddAttribute: @"xmlns" value: @"http://www.w3.org/2005/Atom"];
[xml UpdateAttrAt: @"title" autoCreate: YES attrName: @"type" attrValue: @"text"];
[xml UpdateChildContent: @"title" value: subscriptionName];
[xml UpdateAttrAt: @"content" autoCreate: YES attrName: @"type" attrValue: @"application/xml"];
[xml UpdateAttrAt: @"content|SubscriptionDescription" autoCreate: YES attrName: @"xmlns:i" attrValue: @"http://www.w3.org/2001/XMLSchema-instance"];
[xml UpdateAttrAt: @"content|SubscriptionDescription" autoCreate: YES attrName: @"xmlns" attrValue: @"http://schemas.microsoft.com/netservices/2010/10/servicebus/connect"];
xml.EmitXmlDecl = NO;
NSLog(@"%@",[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>

CkoStringBuilder *sbRequestBody = [[CkoStringBuilder alloc] init];
[xml GetXmlSb: sbRequestBody];

// The path should be set to the to-be-created queue name.
CkoStringBuilder *sbPath = [[CkoStringBuilder alloc] init];
[sbPath Append: @"/"];
[sbPath Append: topicName];
[sbPath Append: @"/Subscriptions/"];
[sbPath Append: subscriptionName];

CkoStringBuilder *sbResponseBody = [[CkoStringBuilder alloc] init];
success = [rest FullRequestSb: @"PUT" uriPath: [sbPath GetAsString] requestBody: sbRequestBody responseBody: sbResponseBody];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

NSLog(@"%@%d",@"Response Status Code = ",[rest.ResponseStatusCode intValue]);

// Check for a success response.
if ([rest.ResponseStatusCode intValue] != 201) {
    NSLog(@"%@",rest.LastRequestStartLine);
    NSLog(@"%@",rest.LastRequestHeader);
    NSLog(@"%@",[sbResponseBody GetAsString]);
    NSLog(@"%@",@"Failed.");
    return;
}

// The response is XML.  (See a sample response below..)
[xml LoadSb: sbResponseBody autoTrim: YES];
NSLog(@"%@",[xml GetXml]);

NSLog(@"%@",@"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>