Ferryman

This is an RPC realization for Ruby and Erlang. It uses Redis and JSON-RPC protocol. It uses Redis pub/sub to send requests and Redis list for responses.

It supports JSON-RPC 2.0 version only.

You should remember that all data serialized to JSON, so all symbols and atoms become strings and binary.

Ruby

Server

class RemoteProcedures
  def add(a, b)
    a + b
  end
end
server = Ferryman::Server.new(Redis.new, "channel")
server.receive(RemoteProcedures.new)

You can pass more than one channel.

Client

timeout = 1.second
client = Ferryman::Client.new(Redis.new, "channel", timeout)
client.call(:sum, 1, 2) #3 or Ferryman::Client::NoSubscription exception
client.multicall(:sum, 1, 2) #[3] or []
client.cast(:sum, 1, 2) #1 - amount of subscribers

Erlang

Server

handler(<<"add">>, [A, B]) -> A + B;
handler(_, _) -> throw(method_not_found).

ferryman_server:start_link("127.0.0.1", 6379, 0, ["channel"], fun handler/2),

Client

{ok, Redis} = eredis:start_link(),
ferryman_client:call(Redis, "channel", add, [1,2]), %3
ferryman_client:call(Redis, "channel", no_method, []). %{error, -32601, <<"Method not found.">>}

See more examples in tests.