defmodule Example.KVStore do
alias Pistis.Machine.{Request, Response}
@behaviour Pistis.Machine
@impl Pistis.Machine
def initial_state(), do: %{}
@impl Pistis.Machine
def process_command(%Request{body: {:get, key}}, current_state) do
%Response{response: Map.get(current_state, key), state: current_state}
end
def process_command(%Request{body: {:put, key, value}}, current_state) do
%Response{response: :ok, state: Map.put(current_state, key, value)}
end
def process_command(%Request{body: {:data}}, current_state) do
response = Enum.zip(Map.keys(current_state), Map.values(current_state))
%Response{response: response, state: current_state}
end
end