Zig

SNS List Topics

See more Amazon SNS Examples

List the existing SNS topics.

See SNS List Topics for more information.

Zig

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

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

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    const rest = try chilkat.Rest.init();
    defer rest.deinit();

    // Connect to the Amazon AWS REST server.
    // such as https://sns.us-west-2.amazonaws.com/
    const b_tls = true;
    const port = 443;
    const b_auto_reconnect = true;
    try rest.connect("sns.us-west-2.amazonaws.com", port, b_tls, b_auto_reconnect);

    // Provide AWS credentials for the REST call.
    const auth_aws = try chilkat.AuthAws.init();
    defer auth_aws.deinit();
    auth_aws.setAccessKey("AWS_ACCESS_KEY");
    auth_aws.setSecretKey("AWS_SECRET_KEY");
    // the region should match our URL above..
    auth_aws.setRegion("us-west-2");
    auth_aws.setServiceName("sns");

    rest.setAuthAws(auth_aws) catch {};

    rest.addQueryParam("Action", "ListTopics") catch {};

    const response_xml = rest.fullRequestNoBody(alloc, "GET", "/") catch {
        std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
        return;
    };

    // A successful response will have a status code equal to 200.
    if (rest.getResponseStatusCode() != 200) {
        std.debug.print("response status code = {d}\n", .{rest.getResponseStatusCode()});
        std.debug.print("response status text = {s}\n", .{try rest.getResponseStatusText(alloc)});
        std.debug.print("response header: {s}\n", .{try rest.getResponseHeader(alloc)});
        std.debug.print("response body: {s}\n", .{response_xml});
        return;
    }

    // Examine the successful XML response (shown below)
    const xml = try chilkat.Xml.init();
    defer xml.deinit();
    xml.loadXml(response_xml) catch {};
    std.debug.print("{s}\n", .{try xml.getXml(alloc)});

    // To iterate over the TopicArn's
    _ = try xml.chilkatPath(alloc, "ListTopicsResult|Topics|$");
    var i: i32 = 0;
    const num_topics = xml.getNumChildren();
    while (i < num_topics) {
        xml.getChild2(i) catch {};
        std.debug.print("{s}\n", .{try xml.getChildContent(alloc, "TopicArn")});
        xml.getParent2() catch {};
        i = i + 1;
    }

    xml.getRoot2();

    // A sample successful response:
    // <?xml version="1.0" encoding="utf-8" ?>
    // <ListTopicsResponse xmlns="http://sns.amazonaws.com/doc/2010-03-31/">
    //     <ListTopicsResult>
    //         <Topics>
    //             <member>
    //                 <TopicArn>arn:aws:sns:us-west-2:957491831129:chilkat</TopicArn>
    //             </member>
    //             <member>
    //                 <TopicArn>arn:aws:sns:us-west-2:957491831129:chilkat123</TopicArn>
    //             </member>
    //             <member>
    //                 <TopicArn>arn:aws:sns:us-west-2:957491831129:chilkatses</TopicArn>
    //             </member>
    //         </Topics>
    //     </ListTopicsResult>
    //     <ResponseMetadata>
    //         <RequestId>54514f94-b07d-5f0b-9c8a-1ff85ff4ac65</RequestId>
    //     </ResponseMetadata>
    // </ListTopicsResponse>
}