Command Pattern via TCP

Questions & Help Questions
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2

I implementated a concept like this with tcp but I took another approach (without the polymerphism) .

By simply using the pattern matching , I have a module Message where there is a function encode , decode, and process.

The encode takes a message (struct) and serializes it by prepending a message which is then used to pattern match on the decode function.
And then the process take message struct as parameter to perform the task for the command.

Example:

defmodule Message do

  def encode(%MyMessage{}) do 
     <<0::8>>
  end

  def decode(<<0::8>>), do: %MyMessage{}

   def process(%MyMessage{}) do
       # Doing stuff
    end
end

And on the tcp handler:

data_to_send = data_received
|> Message.decode()
|> Message.process()
|> Message.encode() # If you want to send a response

If it can help you :wink: