Programming Elixir ≥ 1.6

But Does It Work?

Let’s see where we are. We’re implemented four GenServers and two supervisors. When the application starts, it will start the top-level supervisor, which in turn starts Results, PathFinder, WorkerSupervisor, and Gatherer.

When Gatherer starts (and it will start last), it tells the worker supervisor to start a number of workers. When each worker starts, it gets a path to process from PathFinder, hashes the corresponding file, and passes the result to Gatherer, which stores the path and the hash in the Results server. When there are no more files to process, each worker sends a :done message to the gatherer. When the last worker is done, the gatherer reports the results.

Everything seems to be wired up. Let’s try it:

$ mix ...