Remove all libp2p and syncing code

This will all need to be rebuilt in the future.

This code will be available at a "legacy_libp2p" branch.
This commit is contained in:
Paul Hauner 2018-10-09 13:36:54 +11:00
parent 175c19d8bf
commit a65531ba95
No known key found for this signature in database
GPG Key ID: 303E4494BB28068C
13 changed files with 2 additions and 821 deletions

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@ -12,7 +12,6 @@ clap = "2.32.0"
db = { path = "lighthouse/db" } db = { path = "lighthouse/db" }
dirs = "1.0.3" dirs = "1.0.3"
futures = "0.1.23" futures = "0.1.23"
network-libp2p = { path = "network-libp2p" }
rand = "0.3" rand = "0.3"
rlp = { git = "https://github.com/paritytech/parity-common" } rlp = { git = "https://github.com/paritytech/parity-common" }
slog = "^2.2.3" slog = "^2.2.3"

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@ -1,83 +0,0 @@
use std::sync::Arc;
use std::thread;
use super::db::{ DiskDB };
use super::config::LighthouseConfig;
use super::futures::sync::mpsc::{
unbounded,
};
use super::network_libp2p::service::listen as network_listen;
use super::network_libp2p::state::NetworkState;
use super::slog::Logger;
use super::sync::run_sync_future;
use super::db::ClientDB;
/// Represents the co-ordination of the
/// networking, syncing and RPC (not-yet-implemented) threads.
pub struct Client {
pub db: Arc<ClientDB>,
pub network_thread: thread::JoinHandle<()>,
pub sync_thread: thread::JoinHandle<()>,
}
impl Client {
/// Instantiates a new "Client".
///
/// Presently, this means starting network and sync threads
/// and plumbing them together.
pub fn new(config: &LighthouseConfig,
log: &Logger)
-> Self
{
// Open the local db
let db = {
let db = DiskDB::open(&config.data_dir, None);
Arc::new(db)
};
// Start the network thread
let network_state = NetworkState::new(
&config.data_dir,
config.p2p_listen_port,
&log).expect("Network setup failed"); let (network_thread, network_tx, network_rx) = {
let (message_sender, message_receiver) = unbounded();
let (event_sender, event_receiver) = unbounded();
let network_log = log.new(o!());
let thread = thread::spawn(move || {
network_listen(
network_state,
&event_sender,
message_receiver,
&network_log,
);
});
(thread, message_sender, event_receiver)
};
// Start the sync thread
let (sync_thread, _sync_tx, _sync_rx) = {
let (sync_out_sender, sync_out_receiver) = unbounded();
let (sync_in_sender, sync_in_receiver) = unbounded();
let sync_log = log.new(o!());
let sync_db = db.clone();
let thread = thread::spawn(move || {
run_sync_future(
sync_db,
network_tx.clone(),
network_rx,
&sync_out_sender,
&sync_in_receiver,
sync_log,
);
});
(thread, sync_in_sender, sync_out_receiver)
};
// Return the client struct
Self {
db,
network_thread,
sync_thread,
}
}
}

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@ -4,13 +4,10 @@ extern crate slog_term;
extern crate slog_async; extern crate slog_async;
// extern crate ssz; // extern crate ssz;
extern crate clap; extern crate clap;
extern crate network_libp2p;
extern crate futures; extern crate futures;
extern crate db; extern crate db;
mod client;
mod sync;
mod config; mod config;
use std::path::PathBuf; use std::path::PathBuf;
@ -18,7 +15,6 @@ use std::path::PathBuf;
use slog::Drain; use slog::Drain;
use clap::{ Arg, App }; use clap::{ Arg, App };
use config::LighthouseConfig; use config::LighthouseConfig;
use client::Client;
fn main() { fn main() {
let decorator = slog_term::TermDecorator::new().build(); let decorator = slog_term::TermDecorator::new().build();
@ -64,8 +60,8 @@ fn main() {
"data_dir" => &config.data_dir.to_str(), "data_dir" => &config.data_dir.to_str(),
"port" => &config.p2p_listen_port); "port" => &config.p2p_listen_port);
let client = Client::new(&config, &log); error!(log,
client.sync_thread.join().unwrap(); "Lighthouse under development and does not provide a user demo.");
info!(log, "Exiting."); info!(log, "Exiting.");
} }

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@ -1,12 +0,0 @@
extern crate futures;
extern crate slog;
extern crate tokio;
extern crate network_libp2p;
pub mod network;
pub mod sync_future;
pub mod wire_protocol;
pub use self::sync_future::run_sync_future;
use super::db;

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@ -1,86 +0,0 @@
use std::sync::Arc;
use super::db::ClientDB;
use slog::Logger;
use super::network_libp2p::message::{
NetworkEvent,
OutgoingMessage,
NetworkEventType,
};
use super::wire_protocol::{
WireMessage,
WireMessageHeader,
};
use super::futures::sync::mpsc::{
UnboundedSender,
};
/// Accept a network event and perform all required processing.
///
/// This function should be called whenever an underlying network
/// (e.g., libp2p) has an event to push up to the sync process.
pub fn handle_network_event(
event: NetworkEvent,
db: &Arc<ClientDB>,
network_tx: &UnboundedSender<OutgoingMessage>,
log: &Logger)
-> Result<(), ()>
{
debug!(&log, "";
"network_event" => format!("{:?}", &event));
match event.event {
NetworkEventType::PeerConnect => Ok(()),
NetworkEventType::PeerDrop => Ok(()),
NetworkEventType::Message => {
if let Some(data) = event.data {
handle_network_message(
&data,
&db,
&network_tx,
&log)
} else {
Ok(())
}
}
}
}
/// Accept a message from the network and perform all required
/// processing.
///
/// This function should be called whenever a peer from a network
/// (e.g., libp2p) has sent a message to us.
fn handle_network_message(
message: &[u8],
db: &Arc<ClientDB>,
_network_tx: &UnboundedSender<OutgoingMessage>,
log: &Logger)
-> Result<(), ()>
{
match WireMessage::decode(&message) {
Ok(msg) => {
match msg.header {
WireMessageHeader::Blocks => {
process_unverified_blocks(
msg.body,
&db,
&log
);
Ok(())
}
}
}
Err(_) => {
Ok(()) // No need to pass the error back
}
}
}
fn process_unverified_blocks(_message: &[u8],
_db: &Arc<ClientDB>,
_log: &Logger)
{
//
}

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@ -1,48 +0,0 @@
use super::tokio;
use super::futures::{ Future, Stream };
use super::futures::sync::mpsc::{
UnboundedReceiver,
UnboundedSender,
};
use super::network_libp2p::message::{
NetworkEvent,
OutgoingMessage,
};
use super::network::handle_network_event;
use std::sync::Arc;
use super::db::ClientDB;
use slog::Logger;
type NetworkSender = UnboundedSender<OutgoingMessage>;
type NetworkReceiver = UnboundedReceiver<NetworkEvent>;
type SyncSender = UnboundedSender<Vec<u8>>;
type SyncReceiver = UnboundedReceiver<Vec<u8>>;
/// Start a syncing tokio future.
///
/// Uses green-threading to process messages
/// from the network and the RPC and update
/// the state.
pub fn run_sync_future(
db: Arc<ClientDB>,
network_tx: NetworkSender,
network_rx: NetworkReceiver,
_sync_tx: &SyncSender,
_sync_rx: &SyncReceiver,
log: Logger)
{
let network_future = {
network_rx
.for_each(move |event| {
handle_network_event(
event,
&db.clone(),
&network_tx.clone(),
&log.clone())
})
.map_err(|_| panic!("rx failed"))
};
tokio::run(network_future);
}

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@ -1,92 +0,0 @@
pub enum WireMessageDecodeError {
TooShort,
UnknownType,
}
pub enum WireMessageHeader {
Blocks,
/*
// Leave out until used
Status,
NewBlockHashes,
GetBlockHashes,
BlockHashes,
GetBlocks,
NewBlock,
*/
}
pub struct WireMessage<'a> {
pub header: WireMessageHeader,
pub body: &'a [u8],
}
impl<'a> WireMessage<'a> {
pub fn decode(bytes: &'a [u8])
-> Result<Self, WireMessageDecodeError>
{
if let Some((header_byte, body)) = bytes.split_first() {
let header = match header_byte {
0x06 => Some(WireMessageHeader::Blocks),
_ => None
};
match header {
Some(header) => Ok(Self{header, body}),
None => Err(WireMessageDecodeError::UnknownType)
}
} else {
Err(WireMessageDecodeError::TooShort)
}
}
}
/*
pub fn decode_wire_message(bytes: &[u8])
-> Result<WireMessage, WireMessageDecodeError>
{
if let Some((header_byte, body)) = bytes.split_first() {
let header = match header_byte {
0x06 => Some(WireMessageType::Blocks),
_ => None
};
match header {
Some(header) => Ok((header, body)),
None => Err(WireMessageDecodeError::UnknownType)
}
} else {
Err(WireMessageDecodeError::TooShort)
}
}
/// Determines the message type of some given
/// message.
///
/// Does not check the validity of the message data,
/// it just reads the first byte.
pub fn message_type(message: &Vec<u8>)
-> Option<WireMessageType>
{
match message.get(0) {
Some(0x06) => Some(WireMessageType::Blocks),
_ => None
}
}
pub fn identify_wire_protocol_message(message: &Vec<u8>)
-> Result<(WireMessageType, &[u8]), WireMessageDecodeError>
{
fn strip_header(v: &Vec<u8>) -> &[u8] {
match v.get(1..v.len()) {
None => &vec![],
Some(s) => s
}
}
match message.get(0) {
Some(0x06) => Ok((WireMessageType::Blocks, strip_header(message))),
None => Err(WireMessageDecodeError::TooShort),
_ => Err(WireMessageDecodeError::UnknownType),
}
}
*/

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@ -1,24 +0,0 @@
[package]
name = "network-libp2p"
version = "0.1.0"
authors = ["Paul Hauner <paul@paulhauner.com>"]
[dependencies]
bigint = "4.2"
bytes = ""
eth-secp256k1 = { git = "https://github.com/paritytech/rust-secp256k1" }
futures = "0.1.23"
libp2p-peerstore = { git = "https://github.com/sigp/libp2p-rs", branch ="zksummit" }
libp2p-core = { git = "https://github.com/sigp/libp2p-rs", branch ="zksummit" }
libp2p-mplex = { git = "https://github.com/sigp/libp2p-rs", branch ="zksummit" }
libp2p-tcp-transport = { git = "https://github.com/sigp/libp2p-rs", branch ="zksummit" }
libp2p-floodsub = { git = "https://github.com/sigp/libp2p-rs", branch ="zksummit" }
libp2p-identify = { git = "https://github.com/sigp/libp2p-rs", branch ="zksummit" }
libp2p-kad = { git = "https://github.com/sigp/libp2p-rs", branch ="zksummit" }
pem = "0.5.0"
rand = "0.3"
slog = "^2.2.3"
tokio-core = "0.1"
tokio-io = "0.1"
tokio-stdin = "0.1"
tokio-timer = "0.1"

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@ -1,7 +0,0 @@
# libp2p Network
This is a fairly scrappy implementation of libp2p floodsub for the following
reasons:
- There is not presently a gossip-sub implementation for Rust libp2p.
- The networking layer for the beacon_chain is not yet finalized.

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@ -1,10 +0,0 @@
extern crate libp2p_core;
extern crate libp2p_peerstore;
extern crate pem;
extern crate secp256k1;
#[macro_use]
extern crate slog;
pub mod message;
pub mod service;
pub mod state;

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@ -1,18 +0,0 @@
#[derive(Debug)]
pub enum NetworkEventType {
PeerConnect,
PeerDrop,
Message,
}
#[derive(Debug)]
pub struct NetworkEvent {
pub event: NetworkEventType,
pub data: Option<Vec<u8>>,
}
#[derive(Debug)]
pub struct OutgoingMessage {
pub peer: Option<String>,
pub data: Vec<u8>,
}

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@ -1,315 +0,0 @@
extern crate bigint;
extern crate bytes;
extern crate futures;
extern crate libp2p_peerstore;
extern crate libp2p_floodsub;
extern crate libp2p_identify;
extern crate libp2p_core;
extern crate libp2p_mplex;
extern crate libp2p_tcp_transport;
extern crate libp2p_kad;
extern crate slog;
extern crate tokio_core;
extern crate tokio_io;
extern crate tokio_timer;
extern crate tokio_stdin;
use super::state::NetworkState;
use super::message::{ NetworkEvent, NetworkEventType, OutgoingMessage };
use self::bigint::U512;
use self::futures::{ Future, Stream, Poll };
use self::futures::sync::mpsc::{
UnboundedSender, UnboundedReceiver
};
use self::libp2p_core::{ AddrComponent, Endpoint, Multiaddr,
Transport, ConnectionUpgrade };
use self::libp2p_kad::{ KademliaUpgrade, KademliaProcessingFuture};
use self::libp2p_floodsub::{ FloodSubFuture, FloodSubUpgrade };
use self::libp2p_identify::{ IdentifyInfo, IdentifyTransport, IdentifyOutput };
use self::slog::Logger;
use std::sync::{ Arc, RwLock };
use std::time::{ Duration, Instant };
use std::ops::Deref;
use std::io::Error as IoError;
use self::tokio_io::{ AsyncRead, AsyncWrite };
use self::bytes::Bytes;
pub use self::libp2p_floodsub::Message;
pub fn listen(state: NetworkState,
events_to_app: &UnboundedSender<NetworkEvent>,
raw_rx: UnboundedReceiver<OutgoingMessage>,
log: &Logger)
{
let peer_store = state.peer_store;
let peer_id = state.peer_id;
let listen_multiaddr = state.listen_multiaddr;
let listened_addrs = Arc::new(RwLock::new(vec![]));
let rx = ApplicationReciever{ inner: raw_rx };
// Build a tokio core
let mut core = tokio_core::reactor::Core::new().expect("tokio failure.");
// Build a base TCP libp2p transport
let transport = libp2p_tcp_transport::TcpConfig::new(core.handle())
.with_upgrade(libp2p_core::upgrade::PlainTextConfig)
.with_upgrade(libp2p_mplex::BufferedMultiplexConfig::<[_; 256]>::new())
.into_connection_reuse();
// Build an identify transport to allow identification and negotiation
// of layers running atop the TCP transport (e.g., kad)
let identify_transport = {
let listened_addrs = listened_addrs.clone();
let listen_multiaddr = listen_multiaddr.clone();
IdentifyTransport::new(transport.clone(), peer_store.clone())
// Managed NAT'ed connections - ensuring the external IP
// is stored not the internal addr.
.map(move |out, _, _| {
if let(Some(ref observed), ref listen_multiaddr) =
(out.observed_addr, listen_multiaddr)
{
if let Some(viewed_from_outside) =
transport.nat_traversal(listen_multiaddr, observed)
{
listened_addrs.write().unwrap()
.push(viewed_from_outside);
}
}
out.socket
})
};
// Configure and build a Kademlia upgrade to be applied
// to the base TCP transport.
let kad_config = libp2p_kad::KademliaConfig {
parallelism: 3,
record_store: (),
peer_store,
local_peer_id: peer_id.clone(),
timeout: Duration::from_secs(2)
};
let kad_ctl_proto = libp2p_kad::
KademliaControllerPrototype::new(kad_config);
let kad_upgrade = libp2p_kad::
KademliaUpgrade::from_prototype(&kad_ctl_proto);
// Build a floodsub upgrade to allow pushing topic'ed
// messages across the network.
let (floodsub_upgrade, floodsub_rx) =
FloodSubUpgrade::new(peer_id.clone());
// Combine the Kademlia and Identify upgrades into a single
// upgrader struct.
let upgrade = ConnectionUpgrader {
kad: kad_upgrade.clone(),
floodsub: floodsub_upgrade.clone(),
identify: libp2p_identify::IdentifyProtocolConfig,
};
// Build a Swarm to manage upgrading connections to peers.
let swarm_listened_addrs = listened_addrs.clone();
let swarm_peer_id = peer_id.clone();
let (swarm_ctl, swarm_future) = libp2p_core::swarm(
identify_transport.clone().with_upgrade(upgrade),
move |upgrade, client_addr| match upgrade {
FinalUpgrade::Kad(kad) => Box::new(kad) as Box<_>,
FinalUpgrade::FloodSub(future) => Box::new(future) as Box<_>,
FinalUpgrade::Identify(IdentifyOutput::Sender { sender, .. }) => sender.send(
IdentifyInfo {
public_key: swarm_peer_id.clone().into_bytes(),
agent_version: "lighthouse/1.0.0".to_owned(),
protocol_version: "rust-libp2p/1.0.0".to_owned(),
listen_addrs: swarm_listened_addrs.read().unwrap().to_vec(),
protocols: vec![
"/ipfs/kad/1.0.0".to_owned(),
"/ipfs/id/1.0.0".to_owned(),
"/floodsub/1.0.0".to_owned(),
]
},
&client_addr
),
FinalUpgrade::Identify(IdentifyOutput::RemoteInfo { .. }) => {
unreachable!("Never dial with the identify protocol.")
}
},
);
// Start the Swarm controller listening on the local machine
let actual_addr = swarm_ctl
.listen_on(listen_multiaddr)
.expect("Failed to listen on multiaddr");
info!(log, "libp2p listening"; "listen_addr" => actual_addr.to_string());
// Convert the kad prototype into a controller by providing it the
// newly built swarm.
let (kad_ctl, kad_init) = kad_ctl_proto.start(
swarm_ctl.clone(),
identify_transport.clone().with_upgrade(kad_upgrade.clone()));
// Create a new floodsub controller using a specific topic
let topic = libp2p_floodsub::TopicBuilder::new("beacon_chain").build();
let floodsub_ctl = libp2p_floodsub::FloodSubController::new(&floodsub_upgrade);
floodsub_ctl.subscribe(&topic);
// Generate a tokio timer "wheel" future that sends kad FIND_NODE at
// a routine interval.
let kad_poll_log = log.new(o!());
let kad_poll_event_tx = events_to_app.clone();
let kad_poll = {
let polling_peer_id = peer_id.clone();
tokio_timer::wheel()
.build()
.interval_at(Instant::now(), Duration::from_secs(30))
.map_err(|_| -> IoError { unreachable!() })
.and_then(move |()| kad_ctl.find_node(peer_id.clone()))
.for_each(move |peers| {
let local_hash = U512::from(polling_peer_id.hash());
for peer in peers {
let peer_hash = U512::from(peer.hash());
let distance = 512 - (local_hash ^ peer_hash).leading_zeros();
info!(kad_poll_log, "Discovered peer";
"distance" => distance,
"peer_id" => peer.to_base58());
let peer_addr = AddrComponent::P2P(peer.into_bytes()).into();
let dial_result = swarm_ctl.dial(
peer_addr,
identify_transport.clone().with_upgrade(floodsub_upgrade.clone())
);
if let Err(err) = dial_result {
warn!(kad_poll_log, "Dialling {:?} failed.", err)
};
let event = NetworkEvent {
event: NetworkEventType::PeerConnect,
data: None,
};
kad_poll_event_tx.unbounded_send(event)
.expect("Network unable to contact application.");
};
Ok(())
})
};
// Create a future to handle message recieved from the network
let floodsub_rx = floodsub_rx.for_each(|msg| {
debug!(&log, "Network receive"; "msg" => format!("{:?}", msg));
let event = NetworkEvent {
event: NetworkEventType::Message,
data: Some(msg.data),
};
events_to_app.unbounded_send(event)
.expect("Network unable to contact application.");
Ok(())
});
// Create a future to handle messages recieved from the application
let app_rx = rx.for_each(|msg| {
debug!(&log, "Network publish"; "msg" => format!("{:?}", msg));
floodsub_ctl.publish(&topic, msg.data);
Ok(())
});
// Generate a full future
let final_future = swarm_future
.select(floodsub_rx).map_err(|(err, _)| err).map(|((), _)| ())
.select(app_rx).map_err(|(err, _)| err).map(|((), _)| ())
.select(kad_poll).map_err(|(err, _)| err).map(|((), _)| ())
.select(kad_init).map_err(|(err, _)| err).and_then(|((), n)| n);
core.run(final_future).unwrap();
}
struct ApplicationReciever {
inner: UnboundedReceiver<OutgoingMessage>,
}
impl Stream for ApplicationReciever {
type Item = OutgoingMessage;
type Error = IoError;
fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
self.inner
.poll()
.map_err(|_| unreachable!())
}
}
#[derive(Clone)]
struct ConnectionUpgrader<P, R> {
kad: KademliaUpgrade<P, R>,
identify: libp2p_identify::IdentifyProtocolConfig,
floodsub: FloodSubUpgrade,
}
impl<C, P, R, Pc> ConnectionUpgrade<C> for ConnectionUpgrader<P, R>
where
C: AsyncRead + AsyncWrite + 'static,
P: Deref<Target = Pc> + Clone + 'static,
for<'r> &'r Pc: libp2p_peerstore::Peerstore,
R: 'static
{
type NamesIter = ::std::vec::IntoIter<(Bytes, usize)>;
type UpgradeIdentifier = usize;
type Output = FinalUpgrade<C>;
type Future = Box<Future<Item = FinalUpgrade<C>, Error = IoError>>;
#[inline]
fn protocol_names(&self) -> Self::NamesIter {
vec![
(Bytes::from("/ipfs/kad/1.0.0"), 0),
(Bytes::from("/ipfs/id/1.0.0"), 1),
(Bytes::from("/floodsub/1.0.0"), 2),
].into_iter()
}
fn upgrade(
self,
socket: C,
id: Self::UpgradeIdentifier,
ty: Endpoint,
remote_addr: &Multiaddr)
-> Self::Future
{
match id {
0 => Box::new(
self.kad
.upgrade(socket, (), ty, remote_addr)
.map(|upg| upg.into())),
1 => Box::new(
self.identify
.upgrade(socket, (), ty, remote_addr)
.map(|upg| upg.into())),
2 => Box::new(
self.floodsub
.upgrade(socket, (), ty, remote_addr)
.map(|upg| upg.into()),
),
_ => unreachable!()
}
}
}
enum FinalUpgrade<C> {
Kad(KademliaProcessingFuture),
Identify(IdentifyOutput<C>),
FloodSub(FloodSubFuture),
}
impl<C> From<libp2p_kad::KademliaProcessingFuture> for FinalUpgrade<C> { #[inline]
fn from(upgrade: libp2p_kad::KademliaProcessingFuture) -> Self {
FinalUpgrade::Kad(upgrade)
}
}
impl<C> From<IdentifyOutput<C>> for FinalUpgrade<C> {
#[inline]
fn from(upgrade: IdentifyOutput<C>) -> Self {
FinalUpgrade::Identify(upgrade)
}
}
impl<C> From<FloodSubFuture> for FinalUpgrade<C> {
#[inline]
fn from(upgr: FloodSubFuture) -> Self {
FinalUpgrade::FloodSub(upgr)
}
}

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@ -1,119 +0,0 @@
extern crate rand;
use std::io::{ Read, Write };
use std::error::Error;
use std::fs::File;
use std::path::{ Path, PathBuf };
use std::sync::Arc;
use std::time::Duration;
use super::libp2p_core::Multiaddr;
use super::libp2p_peerstore::{ Peerstore, PeerAccess, PeerId };
use super::libp2p_peerstore::json_peerstore::JsonPeerstore;
use super::pem;
use super::secp256k1::Secp256k1;
use super::secp256k1::key::{ SecretKey, PublicKey };
use super::slog::Logger;
/// Location of the libp2p peerstore inside the Network base dir.
const PEERS_FILE: &str = "peerstore.json";
/// Location of the libp2p local peer secret key inside the Network base dir.
const LOCAL_PEM_FILE: &str = "local_peer_id.pem";
/// Represents the present state of a libp2p network.
pub struct NetworkState {
pub base_dir: PathBuf,
pub pubkey: PublicKey,
pub seckey: SecretKey,
pub peer_id: PeerId,
pub listen_multiaddr: Multiaddr,
pub peer_store: Arc<JsonPeerstore>,
}
impl NetworkState {
/// Create a new libp2p network state. Used to initialize
/// network service.
pub fn new(
// config: LighthouseConfig,
base_dir: &Path,
listen_port: u16,
log: &Logger)
-> Result <Self, Box<Error>>
{
let curve = Secp256k1::new();
let seckey = match
NetworkState::load_secret_key_from_pem_file(base_dir, &curve)
{
Ok(k) => k,
_ => NetworkState::generate_new_secret_key(base_dir, &curve)?
};
let pubkey = PublicKey::from_secret_key(&curve, &seckey)?;
let peer_id = PeerId::from_public_key(
&pubkey.serialize_vec(&curve, false));
info!(log, "Loaded keys"; "peer_id" => &peer_id.to_base58());
let peer_store = {
let path = base_dir.join(PEERS_FILE);
let base = JsonPeerstore::new(path)?;
Arc::new(base)
};
info!(log, "Loaded peerstore"; "peer_count" => &peer_store.peers().count());
let listen_multiaddr =
NetworkState::multiaddr_on_port(&listen_port.to_string());
Ok(Self {
base_dir: PathBuf::from(base_dir),
seckey,
pubkey,
peer_id,
listen_multiaddr,
peer_store,
})
}
/// Return a TCP multiaddress on 0.0.0.0 for a given port.
pub fn multiaddr_on_port(port: &str) -> Multiaddr {
format!("/ip4/0.0.0.0/tcp/{}", port)
.parse::<Multiaddr>().unwrap()
}
pub fn add_peer(&mut self,
peer_id: &PeerId,
multiaddr: Multiaddr,
duration_secs: u64) {
self.peer_store.peer_or_create(&peer_id)
.add_addr(multiaddr, Duration::from_secs(duration_secs));
}
/// Instantiate a SecretKey from a .pem file on disk.
pub fn load_secret_key_from_pem_file(
base_dir: &Path,
curve: &Secp256k1)
-> Result<SecretKey, Box<Error>>
{
let path = base_dir.join(LOCAL_PEM_FILE);
let mut contents = String::new();
let mut file = File::open(path)?;
file.read_to_string(&mut contents)?;
let pem_key = pem::parse(contents)?;
let key = SecretKey::from_slice(curve, &pem_key.contents)?;
Ok(key)
}
/// Generate a new SecretKey and store it on disk as a .pem file.
pub fn generate_new_secret_key(
base_dir: &Path,
curve: &Secp256k1)
-> Result<SecretKey, Box<Error>>
{
let mut rng = rand::thread_rng();
let sk = SecretKey::new(&curve, &mut rng);
let pem_key = pem::Pem {
tag: String::from("EC PRIVATE KEY"),
contents: sk[..].to_vec()
};
let s_string = pem::encode(&pem_key);
let path = base_dir.join(LOCAL_PEM_FILE);
let mut s_file = File::create(path)?;
s_file.write_all(s_string.as_bytes())?;
Ok(sk)
}
}