Lua

SNS List Topics

See more Amazon SNS Examples

List the existing SNS topics.

See SNS List Topics for more information.

Lua

local chilkat = require("chilkat")

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

local rest = chilkat.Rest.new()

-- Connect to the Amazon AWS REST server.
-- such as https://sns.us-west-2.amazonaws.com/
local bTls = true
local port = 443
local bAutoReconnect = true
local success = rest:connect("sns.us-west-2.amazonaws.com", port, bTls, bAutoReconnect)

-- Provide AWS credentials for the REST call.
local authAws = chilkat.AuthAws.new()
authAws.access_key = "AWS_ACCESS_KEY"
authAws.secret_key = "AWS_SECRET_KEY"
-- the region should match our URL above..
authAws.region = "us-west-2"
authAws.service_name = "sns"

rest:set_auth_aws(authAws)

rest:add_query_param("Action", "ListTopics")

local responseXml = rest:full_request_no_body("GET", "/")
if not rest.last_method_success then
    print(rest.last_error_text)
    return
end

-- A successful response will have a status code equal to 200.
if rest.response_status_code ~= 200 then
    print("response status code = " .. rest.response_status_code)
    print("response status text = " .. rest.response_status_text)
    print("response header: " .. rest.response_header)
    print("response body: " .. responseXml)
    return
end

-- Examine the successful XML response (shown below)
local xml = chilkat.Xml.new()
xml:load_xml(responseXml)
print(xml:get_xml())

-- To iterate over the TopicArn's
local notUsed = xml:chilkat_path("ListTopicsResult|Topics|$")
local i = 0
local numTopics = xml.num_children
while i < numTopics do
    xml:get_child2(i)
    print(xml:get_child_content("TopicArn"))
    xml:get_parent2()
    i = i + 1
end

xml:get_root2()

-- 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>