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//! Crypto-bank zeromq based pub-sub implementation.
#![feature(try_trait)]

#[macro_use]
extern crate failure;

extern crate crossbeam;

extern crate cxmr_exchanges;
extern crate cxmr_feeds;
#[macro_use]
extern crate err_convert_macro;
extern crate cxmr_tectonic;

extern crate zmq;

mod parser;
mod publisher;
mod subscriber;

pub use self::parser::*;
pub use self::publisher::*;
pub use self::subscriber::*;

/// Pub-sub module error type.
#[derive(Debug, Fail)]
pub enum Error {
    /// Option is `None` error.
    #[fail(display = "option none")]
    OptionNone,

    /// Channel send error.
    #[fail(display = "channel send error")]
    SendError,

    /// Tectonic module error.
    #[fail(display = "tectonic error: {:?}", _0)]
    Tectonic(cxmr_tectonic::Error),

    /// ZeroMQ error.
    #[fail(display = "zmq error: {:?}", _0)]
    Zmq(zmq::Error),
}

err_converter!(Zmq, zmq::Error);
err_converter!(Tectonic, cxmr_tectonic::Error);
err_converter_no_args!(OptionNone, std::option::NoneError);

impl<T> From<crossbeam::SendError<T>> for Error {
    fn from(_: crossbeam::SendError<T>) -> Error {
        Error::SendError
    }
}