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#![deny(broken_intra_doc_links)]
#![deny(missing_docs)]
#![deny(unsafe_code)]
#![cfg_attr(docsrs, feature(doc_auto_cfg))]
#[macro_use] extern crate lightning;
use lightning::chain;
use lightning::chain::chaininterface::{BroadcasterInterface, FeeEstimator};
use lightning::chain::chainmonitor::{ChainMonitor, Persist};
use lightning::chain::keysinterface::{Sign, KeysInterface};
use lightning::ln::channelmanager::ChannelManager;
use lightning::ln::msgs::{ChannelMessageHandler, RoutingMessageHandler};
use lightning::ln::peer_handler::{CustomMessageHandler, PeerManager, SocketDescriptor};
use lightning::routing::network_graph::{NetworkGraph, NetGraphMsgHandler};
use lightning::util::events::{Event, EventHandler, EventsProvider};
use lightning::util::logger::Logger;
use std::sync::Arc;
use std::sync::atomic::{AtomicBool, Ordering};
use std::thread;
use std::thread::JoinHandle;
use std::time::{Duration, Instant};
use std::ops::Deref;
#[must_use = "BackgroundProcessor will immediately stop on drop. It should be stored until shutdown."]
pub struct BackgroundProcessor {
stop_thread: Arc<AtomicBool>,
thread_handle: Option<JoinHandle<Result<(), std::io::Error>>>,
}
#[cfg(not(test))]
const FRESHNESS_TIMER: u64 = 60;
#[cfg(test)]
const FRESHNESS_TIMER: u64 = 1;
#[cfg(all(not(test), not(debug_assertions)))]
const PING_TIMER: u64 = 10;
#[cfg(all(not(test), debug_assertions))]
const PING_TIMER: u64 = 30;
#[cfg(test)]
const PING_TIMER: u64 = 1;
const NETWORK_PRUNE_TIMER: u64 = 60 * 60;
#[cfg(not(test))]
const FIRST_NETWORK_PRUNE_TIMER: u64 = 60;
#[cfg(test)]
const FIRST_NETWORK_PRUNE_TIMER: u64 = 1;
pub trait Persister<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
where
M::Target: 'static + chain::Watch<Signer>,
T::Target: 'static + BroadcasterInterface,
K::Target: 'static + KeysInterface<Signer = Signer>,
F::Target: 'static + FeeEstimator,
L::Target: 'static + Logger,
{
fn persist_manager(&self, channel_manager: &ChannelManager<Signer, M, T, K, F, L>) -> Result<(), std::io::Error>;
fn persist_graph(&self, network_graph: &NetworkGraph) -> Result<(), std::io::Error>;
}
struct DecoratingEventHandler<
E: EventHandler,
N: Deref<Target = NetGraphMsgHandler<G, A, L>>,
G: Deref<Target = NetworkGraph>,
A: Deref,
L: Deref,
>
where A::Target: chain::Access, L::Target: Logger {
event_handler: E,
net_graph_msg_handler: Option<N>,
}
impl<
E: EventHandler,
N: Deref<Target = NetGraphMsgHandler<G, A, L>>,
G: Deref<Target = NetworkGraph>,
A: Deref,
L: Deref,
> EventHandler for DecoratingEventHandler<E, N, G, A, L>
where A::Target: chain::Access, L::Target: Logger {
fn handle_event(&self, event: &Event) {
if let Some(event_handler) = &self.net_graph_msg_handler {
event_handler.handle_event(event);
}
self.event_handler.handle_event(event);
}
}
impl BackgroundProcessor {
pub fn start<
Signer: 'static + Sign,
CA: 'static + Deref + Send + Sync,
CF: 'static + Deref + Send + Sync,
CW: 'static + Deref + Send + Sync,
T: 'static + Deref + Send + Sync,
K: 'static + Deref + Send + Sync,
F: 'static + Deref + Send + Sync,
G: 'static + Deref<Target = NetworkGraph> + Send + Sync,
L: 'static + Deref + Send + Sync,
P: 'static + Deref + Send + Sync,
Descriptor: 'static + SocketDescriptor + Send + Sync,
CMH: 'static + Deref + Send + Sync,
RMH: 'static + Deref + Send + Sync,
EH: 'static + EventHandler + Send,
PS: 'static + Send + Persister<Signer, CW, T, K, F, L>,
M: 'static + Deref<Target = ChainMonitor<Signer, CF, T, F, L, P>> + Send + Sync,
CM: 'static + Deref<Target = ChannelManager<Signer, CW, T, K, F, L>> + Send + Sync,
NG: 'static + Deref<Target = NetGraphMsgHandler<G, CA, L>> + Send + Sync,
UMH: 'static + Deref + Send + Sync,
PM: 'static + Deref<Target = PeerManager<Descriptor, CMH, RMH, L, UMH>> + Send + Sync,
>(
persister: PS, event_handler: EH, chain_monitor: M, channel_manager: CM,
net_graph_msg_handler: Option<NG>, peer_manager: PM, logger: L
) -> Self
where
CA::Target: 'static + chain::Access,
CF::Target: 'static + chain::Filter,
CW::Target: 'static + chain::Watch<Signer>,
T::Target: 'static + BroadcasterInterface,
K::Target: 'static + KeysInterface<Signer = Signer>,
F::Target: 'static + FeeEstimator,
L::Target: 'static + Logger,
P::Target: 'static + Persist<Signer>,
CMH::Target: 'static + ChannelMessageHandler,
RMH::Target: 'static + RoutingMessageHandler,
UMH::Target: 'static + CustomMessageHandler,
{
let stop_thread = Arc::new(AtomicBool::new(false));
let stop_thread_clone = stop_thread.clone();
let handle = thread::spawn(move || -> Result<(), std::io::Error> {
let event_handler = DecoratingEventHandler { event_handler, net_graph_msg_handler: net_graph_msg_handler.as_ref().map(|t| t.deref()) };
log_trace!(logger, "Calling ChannelManager's timer_tick_occurred on startup");
channel_manager.timer_tick_occurred();
let mut last_freshness_call = Instant::now();
let mut last_ping_call = Instant::now();
let mut last_prune_call = Instant::now();
let mut have_pruned = false;
loop {
peer_manager.process_events();
channel_manager.process_pending_events(&event_handler);
chain_monitor.process_pending_events(&event_handler);
let await_start = Instant::now();
let updates_available =
channel_manager.await_persistable_update_timeout(Duration::from_millis(100));
let await_time = await_start.elapsed();
if updates_available {
log_trace!(logger, "Persisting ChannelManager...");
persister.persist_manager(&*channel_manager)?;
log_trace!(logger, "Done persisting ChannelManager.");
}
if stop_thread.load(Ordering::Acquire) == true {
log_trace!(logger, "Terminating background processor.");
break;
}
if last_freshness_call.elapsed().as_secs() > FRESHNESS_TIMER {
log_trace!(logger, "Calling ChannelManager's timer_tick_occurred");
channel_manager.timer_tick_occurred();
last_freshness_call = Instant::now();
}
if await_time > Duration::from_secs(1) {
log_trace!(logger, "100ms sleep took more than a second, disconnecting peers.");
peer_manager.disconnect_all_peers();
last_ping_call = Instant::now();
} else if last_ping_call.elapsed().as_secs() > PING_TIMER {
log_trace!(logger, "Calling PeerManager's timer_tick_occurred");
peer_manager.timer_tick_occurred();
last_ping_call = Instant::now();
}
if last_prune_call.elapsed().as_secs() > if have_pruned { NETWORK_PRUNE_TIMER } else { FIRST_NETWORK_PRUNE_TIMER } {
if let Some(ref handler) = net_graph_msg_handler {
log_trace!(logger, "Pruning network graph of stale entries");
handler.network_graph().remove_stale_channels();
if let Err(e) = persister.persist_graph(handler.network_graph()) {
log_error!(logger, "Error: Failed to persist network graph, check your disk and permissions {}", e)
}
last_prune_call = Instant::now();
have_pruned = true;
}
}
}
persister.persist_manager(&*channel_manager)?;
if let Some(ref handler) = net_graph_msg_handler {
persister.persist_graph(handler.network_graph())?;
}
Ok(())
});
Self { stop_thread: stop_thread_clone, thread_handle: Some(handle) }
}
pub fn join(mut self) -> Result<(), std::io::Error> {
assert!(self.thread_handle.is_some());
self.join_thread()
}
pub fn stop(mut self) -> Result<(), std::io::Error> {
assert!(self.thread_handle.is_some());
self.stop_and_join_thread()
}
fn stop_and_join_thread(&mut self) -> Result<(), std::io::Error> {
self.stop_thread.store(true, Ordering::Release);
self.join_thread()
}
fn join_thread(&mut self) -> Result<(), std::io::Error> {
match self.thread_handle.take() {
Some(handle) => handle.join().unwrap(),
None => Ok(()),
}
}
}
impl Drop for BackgroundProcessor {
fn drop(&mut self) {
self.stop_and_join_thread().unwrap();
}
}
#[cfg(test)]
mod tests {
use bitcoin::blockdata::block::BlockHeader;
use bitcoin::blockdata::constants::genesis_block;
use bitcoin::blockdata::transaction::{Transaction, TxOut};
use bitcoin::network::constants::Network;
use lightning::chain::chaininterface::{BroadcasterInterface, FeeEstimator};
use lightning::chain::{BestBlock, Confirm, chainmonitor, self};
use lightning::chain::channelmonitor::ANTI_REORG_DELAY;
use lightning::chain::keysinterface::{InMemorySigner, Recipient, KeysInterface, KeysManager, Sign};
use lightning::chain::transaction::OutPoint;
use lightning::get_event_msg;
use lightning::ln::channelmanager::{BREAKDOWN_TIMEOUT, ChainParameters, ChannelManager, SimpleArcChannelManager};
use lightning::ln::features::InitFeatures;
use lightning::ln::msgs::{ChannelMessageHandler, Init};
use lightning::ln::peer_handler::{PeerManager, MessageHandler, SocketDescriptor, IgnoringMessageHandler};
use lightning::routing::network_graph::{NetworkGraph, NetGraphMsgHandler};
use lightning::util::config::UserConfig;
use lightning::util::events::{Event, MessageSendEventsProvider, MessageSendEvent};
use lightning::util::logger::Logger;
use lightning::util::ser::Writeable;
use lightning::util::test_utils;
use lightning_invoice::payment::{InvoicePayer, RetryAttempts};
use lightning_invoice::utils::DefaultRouter;
use lightning_persister::FilesystemPersister;
use std::fs;
use std::ops::Deref;
use std::path::PathBuf;
use std::sync::{Arc, Mutex};
use std::time::Duration;
use super::{BackgroundProcessor, FRESHNESS_TIMER};
const EVENT_DEADLINE: u64 = 5 * FRESHNESS_TIMER;
#[derive(Clone, Eq, Hash, PartialEq)]
struct TestDescriptor{}
impl SocketDescriptor for TestDescriptor {
fn send_data(&mut self, _data: &[u8], _resume_read: bool) -> usize {
0
}
fn disconnect_socket(&mut self) {}
}
type ChainMonitor = chainmonitor::ChainMonitor<InMemorySigner, Arc<test_utils::TestChainSource>, Arc<test_utils::TestBroadcaster>, Arc<test_utils::TestFeeEstimator>, Arc<test_utils::TestLogger>, Arc<FilesystemPersister>>;
struct Node {
node: Arc<SimpleArcChannelManager<ChainMonitor, test_utils::TestBroadcaster, test_utils::TestFeeEstimator, test_utils::TestLogger>>,
net_graph_msg_handler: Option<Arc<NetGraphMsgHandler<Arc<NetworkGraph>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>>>,
peer_manager: Arc<PeerManager<TestDescriptor, Arc<test_utils::TestChannelMessageHandler>, Arc<test_utils::TestRoutingMessageHandler>, Arc<test_utils::TestLogger>, IgnoringMessageHandler>>,
chain_monitor: Arc<ChainMonitor>,
persister: Arc<FilesystemPersister>,
tx_broadcaster: Arc<test_utils::TestBroadcaster>,
network_graph: Arc<NetworkGraph>,
logger: Arc<test_utils::TestLogger>,
best_block: BestBlock,
}
impl Drop for Node {
fn drop(&mut self) {
let data_dir = self.persister.get_data_dir();
match fs::remove_dir_all(data_dir.clone()) {
Err(e) => println!("Failed to remove test persister directory {}: {}", data_dir, e),
_ => {}
}
}
}
struct Persister {
data_dir: String,
graph_error: Option<(std::io::ErrorKind, &'static str)>,
manager_error: Option<(std::io::ErrorKind, &'static str)>
}
impl Persister {
fn new(data_dir: String) -> Self {
Self { data_dir, graph_error: None, manager_error: None }
}
fn with_graph_error(self, error: std::io::ErrorKind, message: &'static str) -> Self {
Self { graph_error: Some((error, message)), ..self }
}
fn with_manager_error(self, error: std::io::ErrorKind, message: &'static str) -> Self {
Self { manager_error: Some((error, message)), ..self }
}
}
impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L:Deref> super::Persister<Signer, M, T, K, F, L> for Persister where
M::Target: 'static + chain::Watch<Signer>,
T::Target: 'static + BroadcasterInterface,
K::Target: 'static + KeysInterface<Signer = Signer>,
F::Target: 'static + FeeEstimator,
L::Target: 'static + Logger,
{
fn persist_manager(&self, channel_manager: &ChannelManager<Signer, M, T, K, F, L>) -> Result<(), std::io::Error> {
match self.manager_error {
None => FilesystemPersister::persist_manager(self.data_dir.clone(), channel_manager),
Some((error, message)) => Err(std::io::Error::new(error, message)),
}
}
fn persist_graph(&self, network_graph: &NetworkGraph) -> Result<(), std::io::Error> {
match self.graph_error {
None => FilesystemPersister::persist_network_graph(self.data_dir.clone(), network_graph),
Some((error, message)) => Err(std::io::Error::new(error, message)),
}
}
}
fn get_full_filepath(filepath: String, filename: String) -> String {
let mut path = PathBuf::from(filepath);
path.push(filename);
path.to_str().unwrap().to_string()
}
fn create_nodes(num_nodes: usize, persist_dir: String) -> Vec<Node> {
let mut nodes = Vec::new();
for i in 0..num_nodes {
let tx_broadcaster = Arc::new(test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new()), blocks: Arc::new(Mutex::new(Vec::new()))});
let fee_estimator = Arc::new(test_utils::TestFeeEstimator { sat_per_kw: Mutex::new(253) });
let chain_source = Arc::new(test_utils::TestChainSource::new(Network::Testnet));
let logger = Arc::new(test_utils::TestLogger::with_id(format!("node {}", i)));
let persister = Arc::new(FilesystemPersister::new(format!("{}_persister_{}", persist_dir, i)));
let seed = [i as u8; 32];
let network = Network::Testnet;
let genesis_block = genesis_block(network);
let now = Duration::from_secs(genesis_block.header.time as u64);
let keys_manager = Arc::new(KeysManager::new(&seed, now.as_secs(), now.subsec_nanos()));
let chain_monitor = Arc::new(chainmonitor::ChainMonitor::new(Some(chain_source.clone()), tx_broadcaster.clone(), logger.clone(), fee_estimator.clone(), persister.clone()));
let best_block = BestBlock::from_genesis(network);
let params = ChainParameters { network, best_block };
let manager = Arc::new(ChannelManager::new(fee_estimator.clone(), chain_monitor.clone(), tx_broadcaster.clone(), logger.clone(), keys_manager.clone(), UserConfig::default(), params));
let network_graph = Arc::new(NetworkGraph::new(genesis_block.header.block_hash()));
let net_graph_msg_handler = Some(Arc::new(NetGraphMsgHandler::new(network_graph.clone(), Some(chain_source.clone()), logger.clone())));
let msg_handler = MessageHandler { chan_handler: Arc::new(test_utils::TestChannelMessageHandler::new()), route_handler: Arc::new(test_utils::TestRoutingMessageHandler::new() )};
let peer_manager = Arc::new(PeerManager::new(msg_handler, keys_manager.get_node_secret(Recipient::Node).unwrap(), &seed, logger.clone(), IgnoringMessageHandler{}));
let node = Node { node: manager, net_graph_msg_handler, peer_manager, chain_monitor, persister, tx_broadcaster, network_graph, logger, best_block };
nodes.push(node);
}
for i in 0..num_nodes {
for j in (i+1)..num_nodes {
nodes[i].node.peer_connected(&nodes[j].node.get_our_node_id(), &Init { features: InitFeatures::known(), remote_network_address: None });
nodes[j].node.peer_connected(&nodes[i].node.get_our_node_id(), &Init { features: InitFeatures::known(), remote_network_address: None });
}
}
nodes
}
macro_rules! open_channel {
($node_a: expr, $node_b: expr, $channel_value: expr) => {{
begin_open_channel!($node_a, $node_b, $channel_value);
let events = $node_a.node.get_and_clear_pending_events();
assert_eq!(events.len(), 1);
let (temporary_channel_id, tx) = handle_funding_generation_ready!(&events[0], $channel_value);
end_open_channel!($node_a, $node_b, temporary_channel_id, tx);
tx
}}
}
macro_rules! begin_open_channel {
($node_a: expr, $node_b: expr, $channel_value: expr) => {{
$node_a.node.create_channel($node_b.node.get_our_node_id(), $channel_value, 100, 42, None).unwrap();
$node_b.node.handle_open_channel(&$node_a.node.get_our_node_id(), InitFeatures::known(), &get_event_msg!($node_a, MessageSendEvent::SendOpenChannel, $node_b.node.get_our_node_id()));
$node_a.node.handle_accept_channel(&$node_b.node.get_our_node_id(), InitFeatures::known(), &get_event_msg!($node_b, MessageSendEvent::SendAcceptChannel, $node_a.node.get_our_node_id()));
}}
}
macro_rules! handle_funding_generation_ready {
($event: expr, $channel_value: expr) => {{
match $event {
&Event::FundingGenerationReady { temporary_channel_id, channel_value_satoshis, ref output_script, user_channel_id } => {
assert_eq!(channel_value_satoshis, $channel_value);
assert_eq!(user_channel_id, 42);
let tx = Transaction { version: 1 as i32, lock_time: 0, input: Vec::new(), output: vec![TxOut {
value: channel_value_satoshis, script_pubkey: output_script.clone(),
}]};
(temporary_channel_id, tx)
},
_ => panic!("Unexpected event"),
}
}}
}
macro_rules! end_open_channel {
($node_a: expr, $node_b: expr, $temporary_channel_id: expr, $tx: expr) => {{
$node_a.node.funding_transaction_generated(&$temporary_channel_id, $tx.clone()).unwrap();
$node_b.node.handle_funding_created(&$node_a.node.get_our_node_id(), &get_event_msg!($node_a, MessageSendEvent::SendFundingCreated, $node_b.node.get_our_node_id()));
$node_a.node.handle_funding_signed(&$node_b.node.get_our_node_id(), &get_event_msg!($node_b, MessageSendEvent::SendFundingSigned, $node_a.node.get_our_node_id()));
}}
}
fn confirm_transaction_depth(node: &mut Node, tx: &Transaction, depth: u32) {
for i in 1..=depth {
let prev_blockhash = node.best_block.block_hash();
let height = node.best_block.height() + 1;
let header = BlockHeader { version: 0x20000000, prev_blockhash, merkle_root: Default::default(), time: height, bits: 42, nonce: 42 };
let txdata = vec![(0, tx)];
node.best_block = BestBlock::new(header.block_hash(), height);
match i {
1 => {
node.node.transactions_confirmed(&header, &txdata, height);
node.chain_monitor.transactions_confirmed(&header, &txdata, height);
},
x if x == depth => {
node.node.best_block_updated(&header, height);
node.chain_monitor.best_block_updated(&header, height);
},
_ => {},
}
}
}
fn confirm_transaction(node: &mut Node, tx: &Transaction) {
confirm_transaction_depth(node, tx, ANTI_REORG_DELAY);
}
#[test]
fn test_background_processor() {
let nodes = create_nodes(2, "test_background_processor".to_string());
let tx = open_channel!(nodes[0], nodes[1], 100000);
let data_dir = nodes[0].persister.get_data_dir();
let persister = Persister::new(data_dir);
let event_handler = |_: &_| {};
let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].net_graph_msg_handler.clone(), nodes[0].peer_manager.clone(), nodes[0].logger.clone());
macro_rules! check_persisted_data {
($node: expr, $filepath: expr) => {
let mut expected_bytes = Vec::new();
loop {
expected_bytes.clear();
match $node.write(&mut expected_bytes) {
Ok(()) => {
match std::fs::read($filepath) {
Ok(bytes) => {
if bytes == expected_bytes {
break
} else {
continue
}
},
Err(_) => continue
}
},
Err(e) => panic!("Unexpected error: {}", e)
}
}
}
}
let filepath = get_full_filepath("test_background_processor_persister_0".to_string(), "manager".to_string());
check_persisted_data!(nodes[0].node, filepath.clone());
loop {
if !nodes[0].node.get_persistence_condvar_value() { break }
}
nodes[0].node.force_close_channel(&OutPoint { txid: tx.txid(), index: 0 }.to_channel_id()).unwrap();
check_persisted_data!(nodes[0].node, filepath.clone());
loop {
if !nodes[0].node.get_persistence_condvar_value() { break }
}
let filepath = get_full_filepath("test_background_processor_persister_0".to_string(), "network_graph".to_string());
if let Some(ref handler) = nodes[0].net_graph_msg_handler {
let network_graph = handler.network_graph();
check_persisted_data!(network_graph, filepath.clone());
}
assert!(bg_processor.stop().is_ok());
}
#[test]
fn test_timer_tick_called() {
let nodes = create_nodes(1, "test_timer_tick_called".to_string());
let data_dir = nodes[0].persister.get_data_dir();
let persister = Persister::new(data_dir);
let event_handler = |_: &_| {};
let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].net_graph_msg_handler.clone(), nodes[0].peer_manager.clone(), nodes[0].logger.clone());
loop {
let log_entries = nodes[0].logger.lines.lock().unwrap();
let desired_log = "Calling ChannelManager's timer_tick_occurred".to_string();
let second_desired_log = "Calling PeerManager's timer_tick_occurred".to_string();
if log_entries.get(&("lightning_background_processor".to_string(), desired_log)).is_some() &&
log_entries.get(&("lightning_background_processor".to_string(), second_desired_log)).is_some() {
break
}
}
assert!(bg_processor.stop().is_ok());
}
#[test]
fn test_channel_manager_persist_error() {
let nodes = create_nodes(2, "test_persist_error".to_string());
open_channel!(nodes[0], nodes[1], 100000);
let data_dir = nodes[0].persister.get_data_dir();
let persister = Persister::new(data_dir).with_manager_error(std::io::ErrorKind::Other, "test");
let event_handler = |_: &_| {};
let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].net_graph_msg_handler.clone(), nodes[0].peer_manager.clone(), nodes[0].logger.clone());
match bg_processor.join() {
Ok(_) => panic!("Expected error persisting manager"),
Err(e) => {
assert_eq!(e.kind(), std::io::ErrorKind::Other);
assert_eq!(e.get_ref().unwrap().to_string(), "test");
},
}
}
#[test]
fn test_network_graph_persist_error() {
let nodes = create_nodes(2, "test_persist_network_graph_error".to_string());
let data_dir = nodes[0].persister.get_data_dir();
let persister = Persister::new(data_dir).with_graph_error(std::io::ErrorKind::Other, "test");
let event_handler = |_: &_| {};
let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].net_graph_msg_handler.clone(), nodes[0].peer_manager.clone(), nodes[0].logger.clone());
match bg_processor.stop() {
Ok(_) => panic!("Expected error persisting network graph"),
Err(e) => {
assert_eq!(e.kind(), std::io::ErrorKind::Other);
assert_eq!(e.get_ref().unwrap().to_string(), "test");
},
}
}
#[test]
fn test_background_event_handling() {
let mut nodes = create_nodes(2, "test_background_event_handling".to_string());
let channel_value = 100000;
let data_dir = nodes[0].persister.get_data_dir();
let persister = Persister::new(data_dir.clone());
let (sender, receiver) = std::sync::mpsc::sync_channel(1);
let event_handler = move |event: &Event| {
sender.send(handle_funding_generation_ready!(event, channel_value)).unwrap();
};
let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].net_graph_msg_handler.clone(), nodes[0].peer_manager.clone(), nodes[0].logger.clone());
begin_open_channel!(nodes[0], nodes[1], channel_value);
let (temporary_channel_id, funding_tx) = receiver
.recv_timeout(Duration::from_secs(EVENT_DEADLINE))
.expect("FundingGenerationReady not handled within deadline");
end_open_channel!(nodes[0], nodes[1], temporary_channel_id, funding_tx);
confirm_transaction(&mut nodes[0], &funding_tx);
let as_funding = get_event_msg!(nodes[0], MessageSendEvent::SendFundingLocked, nodes[1].node.get_our_node_id());
confirm_transaction(&mut nodes[1], &funding_tx);
let bs_funding = get_event_msg!(nodes[1], MessageSendEvent::SendFundingLocked, nodes[0].node.get_our_node_id());
nodes[0].node.handle_funding_locked(&nodes[1].node.get_our_node_id(), &bs_funding);
let _as_channel_update = get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
nodes[1].node.handle_funding_locked(&nodes[0].node.get_our_node_id(), &as_funding);
let _bs_channel_update = get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[0].node.get_our_node_id());
assert!(bg_processor.stop().is_ok());
let (sender, receiver) = std::sync::mpsc::sync_channel(1);
let event_handler = move |event: &Event| sender.send(event.clone()).unwrap();
let bg_processor = BackgroundProcessor::start(Persister::new(data_dir), event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].net_graph_msg_handler.clone(), nodes[0].peer_manager.clone(), nodes[0].logger.clone());
nodes[0].node.force_close_channel(&nodes[0].node.list_channels()[0].channel_id).unwrap();
let commitment_tx = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().pop().unwrap();
confirm_transaction_depth(&mut nodes[0], &commitment_tx, BREAKDOWN_TIMEOUT as u32);
let event = receiver
.recv_timeout(Duration::from_secs(EVENT_DEADLINE))
.expect("SpendableOutputs not handled within deadline");
match event {
Event::SpendableOutputs { .. } => {},
Event::ChannelClosed { .. } => {},
_ => panic!("Unexpected event: {:?}", event),
}
assert!(bg_processor.stop().is_ok());
}
#[test]
fn test_invoice_payer() {
let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
let nodes = create_nodes(2, "test_invoice_payer".to_string());
let data_dir = nodes[0].persister.get_data_dir();
let persister = Persister::new(data_dir);
let scorer = Arc::new(Mutex::new(test_utils::TestScorer::with_penalty(0)));
let router = DefaultRouter::new(Arc::clone(&nodes[0].network_graph), Arc::clone(&nodes[0].logger), random_seed_bytes);
let invoice_payer = Arc::new(InvoicePayer::new(Arc::clone(&nodes[0].node), router, scorer, Arc::clone(&nodes[0].logger), |_: &_| {}, RetryAttempts(2)));
let event_handler = Arc::clone(&invoice_payer);
let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].net_graph_msg_handler.clone(), nodes[0].peer_manager.clone(), nodes[0].logger.clone());
assert!(bg_processor.stop().is_ok());
}
}