<commit_before>extern crate mqtt3;
extern crate futures;
extern crate tokio_core;
extern crate tokio_io;
extern crate tokio_timer;
extern crate bytes;
#[macro_use]
extern crate slog;
extern crate slog_term;
#[macro_use]
extern crate quick_error;

pub mod error;
pub mod codec;
pub mod broker;
pub mod client;

use std::io;
use std::io::ErrorKind;
use std::time::Duration;

use mqtt3::*;
use tokio_core::reactor::{Core, Interval};
use tokio_core::net::TcpListener;
use tokio_io::AsyncRead;

use futures::stream::Stream;
use futures::Future;
use futures::sync::mpsc;

use slog::{Logger, Drain};

use client::Client;
use broker::Broker;
use codec::MqttCodec;
use error::Error;

fn main() {
    let mut core = Core::new().unwrap();
    let handle = core.handle();
    let address = "0.0.0.0:1883".parse().unwrap();
    let logger = rumqttd_logger();

    info!(logger, "⚡   starting broker");

    let listener = TcpListener::bind(&address, &core.handle()).unwrap();

    let broker = Broker::new();
    info!(logger, "👂🏼   listening for connections");
    let connections = listener.incoming()
                           .and_then(|(socket, addr)| {
        let framed = socket.framed(MqttCodec);
        info!(logger, "🌟   new connection from {}", addr );
        let broker = broker.clone();

        // Creates a 'Self' from stream, whose error match to that of and_then's closure
        let handshake = framed.into_future()
                                  .map_err(|(err, _)| err) // for accept errors, get error and discard the stream
                                  .and_then(move |(packet,framed)| { // only accepted connections from here

                let broker = broker.clone();
                if let Some(Packet::Connect(c)) = packet {
                    // TODO: Do connect packet validation here
                    let (tx, rx) = mpsc::channel::<Packet>(100);

                    let client = Client::new(&c.client_id, addr, tx.clone());
                    broker.add_client(client.clone());

                    Ok((framed, client, rx))
                } else {
                    error!(broker.logger, "invalid handshake packet");
                    Err(io::Error::new(io::ErrorKind::Other, "Invalid Handshake Packet"))
                }
        });

        handshake

    });

    let mqtt = connections.map(|w| Some(w))
                         .or_else(|e| {
                                      error!(logger, "{:?}", e);
                                      Ok::<_, ()>(None)
                                  })
                         .for_each(|handshake| {

        let broker = broker.clone();
        let broker2 = broker.clone();

        // handle each connections n/w send and recv here
        if let Some((framed, client, rx)) = handshake {
            let id = client.id.clone();
            let (sender, receiver) = framed.split();

            let connack = Packet::Connack(Connack {
                                              session_present: false,
                                              code: ConnectReturnCode::Accepted,
                                          });

            let _ = client.send(connack);

            // current connections incoming n/w packets
            let rx_future = receiver.for_each(move |msg| {
                match msg {
                    Packet::Publish(p) => broker.handle_publish(p, &client),
                    Packet::Subscribe(s) => broker.handle_subscribe(s, &client),
                    Packet::Puback(pkid) => broker.handle_puback(pkid, &client),
                    Packet::Pubrec(pkid) => broker.handle_pubrec(pkid, &client),
                    Packet::Pubrel(pkid) => broker.handle_pubrel(pkid, &client),
                    Packet::Pubcomp(pkid) => broker.handle_pubcomp(pkid, &client),
                    Packet::Pingreq => broker.handle_pingreq(&client),
                    _ => panic!("Incoming Misc: {:?}", msg),
                }
                Ok(())
            }).then(move |_| {
                Ok::<_, ()>(())
            });

            let interval = Interval::new(Duration::new(5, 0), &handle).unwrap();

            let timer_future =
                interval.for_each(|_| { return Err(io::Error::new(ErrorKind::Other, "Ping Timer Error")); })
                        .then(|_| Ok(()));

            let rx_future = timer_future.select(rx_future);

            // current connections outgoing n/w packets
            let tx_future = rx.map_err(|_| Error::Other)
                              .map(|r| match r {
                                       Packet::Publish(p) => Packet::Publish(p),
                                       Packet::Connack(c) => Packet::Connack(c),
                                       Packet::Suback(sa) => Packet::Suback(sa),
                                       Packet::Puback(pa) => Packet::Puback(pa),
                                       Packet::Pubrec(prec) => Packet::Pubrec(prec),
                                       Packet::Pubrel(prel) => Packet::Pubrel(prel),
                                       Packet::Pubcomp(pc) => Packet::Pubcomp(pc),
                                       Packet::Pingresp => Packet::Pingresp,
                                       _ => panic!("Outgoing Misc: {:?}", r),
                                   })
                              .forward(sender)
                              .then(move |_| -> ::std::result::Result<(), ()> {
                                        // forward error. n/w disconnections.
                                        Ok(())
                                    });

            let rx_future = rx_future.then(|_| Ok(()));

            let connection = rx_future.select(tx_future);
            let connection = connection.then(move |_| {
                                                 error!(broker2.logger, "disconnecting client: {:?}", id );
                                                 broker2.remove_client(&id);
                                                 Ok(())
                                             });

            handle.spawn(connection);
        }
        Ok(())
    });

    core.run(mqtt).unwrap();
}

fn rumqttd_logger() -> Logger {
    use std::sync::Mutex;

    let decorator = slog_term::TermDecorator::new().build();
    let drain = slog_term::FullFormat::new(decorator).build().fuse();
    let drain = Mutex::new(drain).fuse();
    Logger::root(drain, o!("rumqttd" => env!("CARGO_PKG_VERSION")))
}<commit_msg>start implementing simultaneous connections<commit_after>extern crate mqtt3;
extern crate futures;
extern crate tokio_core;
extern crate tokio_io;
extern crate tokio_timer;
extern crate bytes;
#[macro_use]
extern crate slog;
extern crate slog_term;
#[macro_use]
extern crate quick_error;

pub mod error;
pub mod codec;
pub mod broker;
pub mod client;

use std::io;
use std::io::ErrorKind;
use std::time::Duration;

use mqtt3::*;
use tokio_core::reactor::{Core, Interval};
use tokio_core::net::TcpListener;
use tokio_io::AsyncRead;

use futures::stream::Stream;
use futures::Future;
use futures::sync::mpsc;

use slog::{Logger, Drain};

use client::Client;
use broker::Broker;
use codec::MqttCodec;
use error::Error;

fn main() {
    let mut core = Core::new().unwrap();
    let handle = core.handle();
    let address = "0.0.0.0:1883".parse().unwrap();
    let logger = rumqttd_logger();

    info!(logger, "⚡   starting broker");

    let listener = TcpListener::bind(&address, &core.handle()).unwrap();

    let broker = Broker::new();
    let broker_inner = broker.clone();
    let handle_inner = handle.clone();
    info!(logger, "👂🏼   listening for connections");
    
    let connections = listener.incoming().and_then(|(socket, addr)| {
        let framed = socket.framed(MqttCodec);
        info!(logger, "🌟   new connection from {}", addr );
        let broker_inner = broker_inner.clone();
        // Creates a 'Self' from stream, whose error match to that of and_then's closure
        let handshake = framed.into_future()
                                  .map_err(|(err, _)| err) // for accept errors, get error and discard the stream
                                  .and_then(move |(packet,framed)| { // only accepted connections from here

                let broker = broker_inner.clone();
                if let Some(Packet::Connect(c)) = packet {
                    // TODO: Do connect packet validation here
                    let (tx, rx) = mpsc::channel::<Packet>(100);

                    let client = Client::new(&c.client_id, addr, tx.clone());
                    broker.add_client(client.clone());

                    Ok((framed, client, rx))
                } else {
                    error!(broker.logger, "invalid handshake packet");
                    Err(io::Error::new(io::ErrorKind::Other, "Invalid Handshake Packet"))
                }
        });

        let broker_inner = broker.clone();
        let handle_inner = handle_inner.clone();

        let mqtt = handshake.map(|w| Some(w))
                         .or_else(|e| {
                                      // error!(logger, "{:?}", e);
                                      Ok::<_, ()>(None)
                                  })
                         .map(move |handshake| {

                let broker_handshake = broker_inner.clone();
                // handle each connections n/w send and recv here
                if let Some((framed, client, rx)) = handshake {
                    let id = client.id.clone();
                    let (sender, receiver) = framed.split();

                    let connack = Packet::Connack(Connack {
                                                      session_present: false,
                                                      code: ConnectReturnCode::Accepted,
                                                  });

                    let _ = client.send(connack);
                    let broker_inner = broker_handshake.clone();
                    let handle_inner = handle_inner.clone();

                    // current connections incoming n/w packets
                    let rx_future = receiver.for_each(move |msg| {
                        let broker = broker_inner.clone();
                        match msg {
                            Packet::Publish(p) => broker.handle_publish(p, &client),
                            Packet::Subscribe(s) => broker.handle_subscribe(s, &client),
                            Packet::Puback(pkid) => broker.handle_puback(pkid, &client),
                            Packet::Pubrec(pkid) => broker.handle_pubrec(pkid, &client),
                            Packet::Pubrel(pkid) => broker.handle_pubrel(pkid, &client),
                            Packet::Pubcomp(pkid) => broker.handle_pubcomp(pkid, &client),
                            Packet::Pingreq => broker.handle_pingreq(&client),
                            _ => panic!("Incoming Misc: {:?}", msg),
                        }
                        Ok(())
                    }).then(move |_| {
                        Ok::<_, ()>(())
                    });

                    
                    let interval = Interval::new(Duration::new(5, 0), &handle_inner).unwrap();

                    let timer_future =
                        interval.for_each(|_| { return Err(io::Error::new(ErrorKind::Other, "Ping Timer Error")); })
                                .then(|_| Ok(()));

                    let rx_future = timer_future.select(rx_future);

                    // current connections outgoing n/w packets
                    let tx_future = rx.map_err(|_| Error::Other)
                                      .map(|r| match r {
                                               Packet::Publish(p) => Packet::Publish(p),
                                               Packet::Connack(c) => Packet::Connack(c),
                                               Packet::Suback(sa) => Packet::Suback(sa),
                                               Packet::Puback(pa) => Packet::Puback(pa),
                                               Packet::Pubrec(prec) => Packet::Pubrec(prec),
                                               Packet::Pubrel(prel) => Packet::Pubrel(prel),
                                               Packet::Pubcomp(pc) => Packet::Pubcomp(pc),
                                               Packet::Pingresp => Packet::Pingresp,
                                               _ => panic!("Outgoing Misc: {:?}", r),
                                      })
                                      .forward(sender)
                                      .then(move |_| -> ::std::result::Result<(), ()> {
                                                // forward error. n/w disconnections.
                                                Ok(())
                                      });

                    let rx_future = rx_future.then(|_| Ok(()));

                    
                    let broker_inner = broker_handshake.clone();
                    let connection = rx_future.select(tx_future);
                    let c = connection.then(move |_| {
                                                         error!(broker_inner.logger, "disconnecting client: {:?}", id );
                                                         broker_inner.remove_client(&id);
                                                         Ok::<_, ()>(())
                                                     });

                   handle_inner.spawn(c);
                }
                Ok::<_, ()>(())
        }).then(|_| Ok(()));
        
        handle.spawn(mqtt);
        Ok(())
    });

    core.run(connections).unwrap();
}

fn rumqttd_logger() -> Logger {
    use std::sync::Mutex;

    let decorator = slog_term::TermDecorator::new().build();
    let drain = slog_term::FullFormat::new(decorator).build().fuse();
    let drain = Mutex::new(drain).fuse();
    Logger::root(drain, o!("rumqttd" => env!("CARGO_PKG_VERSION")))
}
{'fraction_non_alphanumeric': 0.129299864120718, 'fraction_numerical': 0.0023600085818493884, 'mean_word_length': 1.375, 'pattern_counts': {'":': 0, '<': 13, '<?xml version=': 0, '>': 53, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 2, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 81, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '1242179', 'n_tokens_mistral': 3686, 'n_tokens_neox': 3455, 'n_words': 761}