Lua Requires Chilkat v9.5.0.65+

Azure Service Bus - Send Message to Topic

See more Azure Service Bus Examples

Example code showing how to send a message to an Azure Service Bus Topic. Lua

local chilkat = require("chilkat")

-- 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.
local rest = chilkat.Rest.new()
local bAutoReconnect = true
local success = rest:connect("<yournamespace>.servicebus.windows.net", 443, true, bAutoReconnect)
if not success then
    print(rest.last_error_text)
    return
end

-- ----------------------------------------------------------------------------------------------
-- 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.
local sbToken = chilkat.StringBuilder.new()
sbToken:load_file("qa_data/tokens/serviceBusSas.txt", "utf-8")

-- Tell the REST object to use the Azure Shared Access Signature for authorization.
sbToken:prepend("SharedAccessSignature ")
rest:add_header("Authorization", sbToken:get_as_string())

-- ----------------------------------------------------------------------------------------------

-- The code for sending to a topic is identical to the code sending to a queue.
-- The only difference is that a topic name (or topic path) is used instead of queue name/path.

-- Send to a topic named "gilaMonster";
local topicName = "gilaMonster"

-- The HTTP request body contains the content of the message sent to the topic.
local sbRequestBody = chilkat.StringBuilder.new()
sbRequestBody:append("Hello, I'm a gila monster!")

-- Build the path..
local sbPath = chilkat.StringBuilder.new()
sbPath:append("/")
sbPath:append(topicName)
sbPath:append("/messages")

-- Add timeout and api-version query parameters.
rest:add_query_param("timeout", "20")
rest:add_query_param("api-version", "2013-08")

-- Standard brokered message properties are placed in a BrokerProperties HTTP header.
-- The broker properties must be serialized in JSON format. To specify a TimeToLive value of 3600 seconds
-- and to add a message label "M1" to the message..
local json = chilkat.JsonObject.new()
json:append_int("TimeToLive", 3600)
json:append_string("Label", "A123")
rest:add_header("BrokerProperties", json:emit())

-- To add custom properties, such as "Priority" and "Color"
rest:add_header("Priority", "High")
rest:add_header("Color", "pink")

local sbResponseBody = chilkat.StringBuilder.new()
success = rest:full_request_sb("POST", sbPath:get_as_string(), sbRequestBody, sbResponseBody)
if not success then
    print(rest.last_error_text)
    return
end

print("Response Status Code = " .. rest.response_status_code)

-- Check for a success response.
if rest.response_status_code ~= 201 then
    print(rest.last_request_start_line)
    print(rest.last_request_header)
    print(sbResponseBody:get_as_string())
    print("Failed.")
    return
end

-- If successful, the 201 response will have no response body.

print("Success.")