Zig

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.

Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    // 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.
    const rest = try chilkat.Rest.init();
    defer rest.deinit();
    const b_auto_reconnect = true;
    rest.connect("<yournamespace>.servicebus.windows.net", 443, true, b_auto_reconnect) catch {
        std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
        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.
    const sb_token = try chilkat.StringBuilder.init();
    defer sb_token.deinit();
    sb_token.loadFile("qa_data/tokens/serviceBusSas.txt", "utf-8") catch {};

    // Tell the REST object to use the Azure Shared Access Signature for authorization.
    sb_token.prepend("SharedAccessSignature ") catch {};
    rest.addHeader("Authorization", try sb_token.getAsString(alloc)) catch {};

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

    // Create a new subscription named "feedings";
    const topic_name = "gilaMonster";
    const subscription_name = "feedings";

    // Create the XML body of the PUT request.
    const xml = try chilkat.Xml.init();
    defer xml.deinit();
    xml.setTag("entry");
    xml.addAttribute("xmlns", "http://www.w3.org/2005/Atom") catch {};
    xml.updateAttrAt("title", true, "type", "text") catch {};
    xml.updateChildContent("title", subscription_name);
    xml.updateAttrAt("content", true, "type", "application/xml") catch {};
    xml.updateAttrAt("content|SubscriptionDescription", true, "xmlns:i", "http://www.w3.org/2001/XMLSchema-instance") catch {};
    xml.updateAttrAt("content|SubscriptionDescription", true, "xmlns", "http://schemas.microsoft.com/netservices/2010/10/servicebus/connect") catch {};
    xml.setEmitXmlDecl(false);
    std.debug.print("{s}\n", .{try xml.getXml(alloc)});

    // 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>

    const sb_request_body = try chilkat.StringBuilder.init();
    defer sb_request_body.deinit();
    xml.getXmlSb(sb_request_body) catch {};

    // The path should be set to the to-be-created queue name.
    const sb_path = try chilkat.StringBuilder.init();
    defer sb_path.deinit();
    sb_path.append("/") catch {};
    sb_path.append(topic_name) catch {};
    sb_path.append("/Subscriptions/") catch {};
    sb_path.append(subscription_name) catch {};

    const sb_response_body = try chilkat.StringBuilder.init();
    defer sb_response_body.deinit();
    rest.fullRequestSb("PUT", try sb_path.getAsString(alloc), sb_request_body, sb_response_body) catch {
        std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Response Status Code = {d}\n", .{rest.getResponseStatusCode()});

    // Check for a success response.
    if (rest.getResponseStatusCode() != 201) {
        std.debug.print("{s}\n", .{try rest.getLastRequestStartLine(alloc)});
        std.debug.print("{s}\n", .{try rest.getLastRequestHeader(alloc)});
        std.debug.print("{s}\n", .{try sb_response_body.getAsString(alloc)});
        std.debug.print("Failed.\n", .{});
        return;
    }

    // The response is XML.  (See a sample response below..)
    xml.loadSb(sb_response_body, true) catch {};
    std.debug.print("{s}\n", .{try xml.getXml(alloc)});

    std.debug.print("Success.\n", .{});

    // -----------------------------------------------
    // 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>
}