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use std::{mem, net};
use std::sync::Arc;
use std::sync::atomic::{AtomicUsize, Ordering};
use std::collections::{HashMap, HashSet};
use parking_lot::RwLock;
use net::{Connection, Channel};
use p2p::Context;
use session::{SessionFactory};
use util::{Direction, PeerInfo};
use PeerId;
const SYNCHRONOUS_RESPONSES: bool = true;
#[derive(Default)]
pub struct Connections {
peer_counter: AtomicUsize,
channels: RwLock<HashMap<PeerId, Arc<Channel>>>,
}
impl Connections {
pub fn channel(&self, id: PeerId) -> Option<Arc<Channel>> {
self.channels.read().get(&id).cloned()
}
pub fn channels(&self) -> HashMap<PeerId, Arc<Channel>> {
self.channels.read().clone()
}
pub fn addresses(&self) -> HashSet<net::SocketAddr> {
self.channels().values().map(|channel| channel.peer_info().address).collect()
}
pub fn info(&self) -> Vec<PeerInfo> {
self.channels().values().map(|channel| channel.peer_info()).collect()
}
pub fn count(&self) -> usize {
self.channels.read().len()
}
pub fn store<T>(&self, context: Arc<Context>, connection: Connection, direction: Direction) -> Arc<Channel> where T: SessionFactory {
let id = self.peer_counter.fetch_add(1, Ordering::AcqRel);
let peer_info = PeerInfo {
id: id,
address: connection.address,
user_agent: connection.version_message.user_agent().unwrap_or("unknown".into()),
direction: direction,
version: connection.version,
version_message: connection.version_message,
magic: connection.magic,
};
let session = T::new_session(context, peer_info.clone(), SYNCHRONOUS_RESPONSES);
let channel = Arc::new(Channel::new(connection.stream, peer_info, session));
self.channels.write().insert(id, channel.clone());
channel
}
pub fn remove(&self, id: PeerId) -> Option<Arc<Channel>> {
self.channels.write().remove(&id)
}
pub fn remove_all(&self) -> Vec<Arc<Channel>> {
mem::replace(&mut *self.channels.write(), HashMap::new())
.into_iter()
.map(|(_, value)| value)
.collect()
}
}