Lua

SQS Delete Message

See more Amazon SQS Examples

Deletes a message from an SQS queue. You specify the message by using the message's receipt handle and not the message ID you received when you sent the message. This example will first receive a message, and then use the receipt handle to delete it.

See SQS DeleteMessage or detailed 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://sqs.us-west-2.amazonaws.com/
local bTls = true
local port = 443
local bAutoReconnect = true
local success = rest:connect("sqs.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 = "sqs"

rest:set_auth_aws(authAws)

rest:add_query_param("Action", "ReceiveMessage")
rest:add_query_param("MaxNumberOfMessages", "5")
rest:add_query_param("VisibilityTimeout", "15")
rest:add_query_param("AttributeName", "All")
rest:add_query_param("MessageAttributeName", "All")

-- Use the actual path part of your SQS queue URL here:
local responseXml = rest:full_request_no_body("GET", "/123456789123/chilkatTest")
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.
local xml = chilkat.Xml.new()
xml:load_xml(responseXml)

-- A successful response looks like this:
-- <?xml version="1.0" encoding="utf-8" ?>
-- <ReceiveMessageResponse xmlns="http://queue.amazonaws.com/doc/2012-11-05/">
--     <ReceiveMessageResult>
--         <Message>
--             <Body>this is a test</Body>
--             <MD5OfBody>54b0c58c7ce9f2a8b551351102ee0938</MD5OfBody>
--             <ReceiptHandle>AQEBMyLof...UbKBTvHtEg==</ReceiptHandle>
--             <Attribute>
--                 <Name>SenderId</Name>
--                 <Value>957491831129</Value>
--             </Attribute>
-- ...
-- ...
--             <MessageId>52882c65-5e21-4450-9024-93a3b01e61d3</MessageId>
--             <MD5OfMessageAttributes>2ff68603f4239272bd03f543254ed040</MD5OfMessageAttributes>
--         </Message>
--     </ReceiveMessageResult>
--     <ResponseMetadata>
--         <RequestId>05ba5c92-80ee-5f87-be76-0cf67b7475d6</RequestId>
--     </ResponseMetadata>
-- </ReceiveMessageResponse>

-- Get some values from the XML:
local receiptHandle = xml:chilkat_path("ReceiveMessageResult|Message|ReceiptHandle|*")
print("ReceiptHandle = " .. receiptHandle)

-- Now use the receipt handle to delete the message.
-- Use the same connection (or automatically reconnect if needed)
rest:clear_all_query_params()

rest:add_query_param("Action", "DeleteMessage")
rest:add_query_param("ReceiptHandle", receiptHandle)

-- Use the actual path part of your SQS queue URL here:
responseXml = rest:full_request_no_body("GET", "/123456789123/chilkatTest")
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.
xml:load_xml(responseXml)
print(xml:get_xml())

-- A successful DeleteMessage response looks like this:
-- <DeleteMessageResponse>
--     <ResponseMetadata>
--         <RequestId>
--             b5293cb5-d306-4a17-9048-b263635abe42
--         </RequestId>
--     </ResponseMetadata>
-- </DeleteMessageResponse>