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Design

Below is an example of how an old channel design can be modified to handle custom ACKs. The design is flexible and the components can be modified to suit your needs.

The old channel in this example is setup as From File → To LLP. When the to LLP component sends the HL7 file to the receiving server, it receives the custom ACK. The To LLP is only designed to handle standard ACK responses, so it is unable to handle the custom ACK and produces an error.

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The new channel design makes use of a translator in the filter component. This filter implements the functionality of the previous designs To LLP component, while adding the ability to process custom ACK messages. In this design the channel is setup as From File → Filter → To Channel.

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Prerequisite

This implementation makes use of iNTERFACEWARE’s llp.lua shared module. Import the LLP custom client channel from the built in Iguana tools repository to add this module to your Iguana. https://help.interfaceware.com/v6/llp-client-custom

Implementation

Instead of using a from/to LLP component, this implementation makes use of the translator environment, and the ability to make LLP calls within the translator (or filter).

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In this example the ADR response is pushed to the queue, however the ADR response can be handled in many different ways such as writing to a file or saving to a database.

Testing Your Implementation

Creating a channel that sends a pre defined ADR response as the ACK for the purpose of testing can be beneficial to ensure your code works as expected.

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local FILE_PATH = 'C:\\Program Files\\iNTERFACEWARE\\Iguana\\SampleMessages\\sample_ADR.txt'
function main(Data)
   local ACK = readFile() 
   ack.send(ACK)
end
function readFile()
   local file = io.open(FILE_PATH,'r')
   local content = file:read("*all")
   return content
end

Limitations

Using the translator to send and receive data over LLP, the is no option to include the following SSL files:

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