6 months ago

Multiple implementations to an external api - best approach. (contracts, interfaces, something else?)

Posted 6 months ago by lambooni

My scenario is as follows:

  • I am writing a system that can book shipments with various shipping companies.
  • There will a number of different couriers and "booking" will be via an external API with differing methods.
  • Fundamentally the inputs (package size, type weight) and outputs (shipment label, tracking number) should be the same, even though the way I get them will differ.

Is this a good scenario for contacts and interfaces? I usually see these used as a way to change system wide implementations (i.e. from file to database drivers) and am not sure if they are so suitable when switching between different concrete classes on the fly.

I want a way to ensure that I can add new shipping companies easily, without having to change any of the code that interacts with the various API's.

Please sign in or create an account to participate in this conversation.