mod bitcoind_client;
mod cli;
-mod utils;
+mod convert;
+mod disk;
+mod hex_utils;
use background_processor::BackgroundProcessor;
-use bitcoin::{BlockHash, Txid};
+use bitcoin::BlockHash;
use bitcoin::blockdata::constants::genesis_block;
use bitcoin::blockdata::transaction::Transaction;
use bitcoin::consensus::encode;
-use bitcoin::hashes::hex::FromHex;
+use bitcoin::hashes::Hash;
+use bitcoin::hashes::sha256::Hash as Sha256;
use bitcoin::network::constants::Network;
use bitcoin::secp256k1::Secp256k1;
-use bitcoin::util::address::Address;
use bitcoin_bech32::WitnessProgram;
use crate::bitcoind_client::BitcoindClient;
+use crate::disk::FilesystemLogger;
use lightning::chain;
use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
use lightning::chain::chainmonitor::ChainMonitor;
-use lightning::chain::channelmonitor::ChannelMonitor;
use lightning::chain::Filter;
use lightning::chain::keysinterface::{InMemorySigner, KeysInterface, KeysManager};
use lightning::chain::transaction::OutPoint;
use lightning::chain::Watch;
use lightning::ln::channelmanager;
-use lightning::ln::channelmanager::{ChannelManagerReadArgs, PaymentHash, PaymentPreimage,
+use lightning::ln::channelmanager::{ChainParameters, ChannelManagerReadArgs, PaymentHash, PaymentPreimage,
SimpleArcChannelManager};
use lightning::ln::peer_handler::{MessageHandler, SimpleArcPeerManager};
use lightning::util::config::UserConfig;
use lightning::util::events::{Event, EventsProvider};
-use lightning::util::logger::{Logger, Record};
-use lightning::util::ser::{ReadableArgs, Writer};
+use lightning::util::ser::ReadableArgs;
use lightning_block_sync::UnboundedCache;
use lightning_block_sync::SpvClient;
-use lightning_block_sync::http::HttpEndpoint;
use lightning_block_sync::init;
use lightning_block_sync::poll;
-use lightning_block_sync::poll::{ChainTip, Poll};
-use lightning_block_sync::rpc::RpcClient;
use lightning_net_tokio::SocketDescriptor;
use lightning_persister::FilesystemPersister;
use rand::{thread_rng, Rng};
use lightning::routing::network_graph::NetGraphMsgHandler;
-use std::cell::RefCell;
use std::collections::HashMap;
use std::fs;
use std::fs::File;
-use std::io::Cursor;
+use std::io;
+use std::io:: Write;
use std::path::Path;
-use std::str::FromStr;
use std::sync::{Arc, Mutex};
use std::thread;
use std::time::{Duration, SystemTime};
-use time::OffsetDateTime;
use tokio::runtime::Runtime;
use tokio::sync::mpsc;
-const NETWORK: Network = Network::Regtest;
-
-pub struct FilesystemLogger{}
-impl Logger for FilesystemLogger {
- fn log(&self, record: &Record) {
- let raw_log = record.args.to_string();
- let log = format!("{} {:<5} [{}:{}] {}", OffsetDateTime::now_utc().format("%F %T"),
- record.level.to_string(), record.module_path, record.line, raw_log);
- fs::create_dir_all("logs").unwrap();
- fs::OpenOptions::new().create(true).append(true).open("./logs/logs.txt").unwrap()
- .write_all(log.as_bytes()).unwrap();
- }
-}
-
-fn read_channelmonitors_from_disk(path: String, keys_manager: Arc<KeysManager>) ->
- Result<HashMap<OutPoint, (BlockHash, ChannelMonitor<InMemorySigner>)>, std::io::Error>
-{
- if !Path::new(&path).exists() {
- return Ok(HashMap::new())
- }
- let mut outpoint_to_channelmonitor = HashMap::new();
- for file_option in fs::read_dir(path).unwrap() {
- let file = file_option.unwrap();
- let owned_file_name = file.file_name();
- let filename = owned_file_name.to_str();
- if !filename.is_some() || !filename.unwrap().is_ascii() || filename.unwrap().len() < 65 {
- return Err(std::io::Error::new(std::io::ErrorKind::Other, "Invalid ChannelMonitor file name"));
- }
-
- let txid = Txid::from_hex(filename.unwrap().split_at(64).0);
- if txid.is_err() {
- return Err(std::io::Error::new(std::io::ErrorKind::Other, "Invalid tx ID in filename"));
- }
-
- let index = filename.unwrap().split_at(65).1.split('.').next().unwrap().parse();
- if index.is_err() {
- return Err(std::io::Error::new(std::io::ErrorKind::Other, "Invalid tx index in filename"));
- }
+pub(crate) const NETWORK: Network = Network::Regtest;
- let contents = fs::read(&file.path())?;
-
- if let Ok((blockhash, channel_monitor)) =
- <(BlockHash, ChannelMonitor<InMemorySigner>)>::read(&mut Cursor::new(&contents),
- &*keys_manager)
- {
- outpoint_to_channelmonitor.insert(OutPoint { txid: txid.unwrap(), index: index.unwrap() },
- (blockhash, channel_monitor));
- } else {
- return Err(std::io::Error::new(std::io::ErrorKind::Other,
- "Failed to deserialize ChannelMonitor"));
- }
- }
- Ok(outpoint_to_channelmonitor)
-}
-
-type Invoice = String;
-
-enum HTLCDirection {
+#[derive(PartialEq)]
+pub(crate) enum HTLCDirection {
Inbound,
Outbound
}
-type PaymentInfoStorage = Arc<Mutex<HashMap<PaymentHash, (Invoice, Option<PaymentPreimage>, HTLCDirection)>>>;
+pub(crate) enum HTLCStatus {
+ Pending,
+ Succeeded,
+ Failed,
+}
+
+pub(crate) type PaymentInfoStorage = Arc<Mutex<HashMap<PaymentHash, (Option<PaymentPreimage>,
+ HTLCDirection, HTLCStatus)>>>;
type ArcChainMonitor = ChainMonitor<InMemorySigner, Arc<dyn Filter>, Arc<BitcoindClient>,
Arc<BitcoindClient>, Arc<FilesystemLogger>, Arc<FilesystemPersister>>;
pub(crate) type ChannelManager = SimpleArcChannelManager<ArcChainMonitor, BitcoindClient, BitcoindClient,
FilesystemLogger>;
-
fn handle_ldk_events(peer_manager: Arc<PeerManager>, channel_manager: Arc<ChannelManager>,
- chain_monitor: Arc<ArcChainMonitor>, bitcoind_rpc_client: Arc<BitcoindClient>,
- keys_manager: Arc<KeysManager>, mut pending_txs: HashMap<OutPoint, Transaction>,
- htlcs: PaymentInfoStorage) -> HashMap<OutPoint, Transaction>
+ chain_monitor: Arc<ArcChainMonitor>, bitcoind_client: Arc<BitcoindClient>,
+ keys_manager: Arc<KeysManager>, payment_storage: PaymentInfoStorage)
{
- peer_manager.process_events();
- let mut check_for_more_events = true;
- while check_for_more_events {
+ let mut pending_txs: HashMap<OutPoint, Transaction> = HashMap::new();
+ loop {
+ peer_manager.process_events();
let loop_channel_manager = channel_manager.clone();
- check_for_more_events = false;
let mut events = channel_manager.get_and_clear_pending_events();
events.append(&mut chain_monitor.get_and_clear_pending_events());
- let mut rpc = bitcoind_rpc_client.bitcoind_rpc_client.lock().unwrap();
for event in events {
match event {
Event::FundingGenerationReady { temporary_channel_id, channel_value_satoshis,
output_script, .. } => {
+ // Construct the raw transaction with one output, that is paid the amount of the
+ // channel.
let addr = WitnessProgram::from_scriptpubkey(&output_script[..], match NETWORK {
Network::Bitcoin => bitcoin_bech32::constants::Network::Bitcoin,
Network::Testnet => bitcoin_bech32::constants::Network::Testnet,
Network::Regtest => bitcoin_bech32::constants::Network::Regtest,
+ Network::Signet => panic!("Signet unsupported"),
}
).expect("Lightning funding tx should always be to a SegWit output").to_address();
- let outputs = format!("{{\"{}\": {}}}", addr, channel_value_satoshis as f64 / 1_000_000_00.0).to_string();
- let tx_hex = rpc.call_method("createrawtransaction", &vec![serde_json::json!(outputs)]).unwrap();
- let raw_tx = format!("\"{}\"", tx_hex.as_str().unwrap()).to_string();
- let funded_tx = rpc.call_method("fundrawtransaction", &vec![serde_json::json!(raw_tx)]).unwrap();
- let change_output_position = funded_tx["changepos"].as_i64().unwrap();
+ let mut outputs = vec![HashMap::with_capacity(1)];
+ outputs[0].insert(addr, channel_value_satoshis as f64 / 100_000_000.0);
+ let raw_tx = bitcoind_client.create_raw_transaction(outputs);
+
+ // Have your wallet put the inputs into the transaction such that the output is
+ // satisfied.
+ let funded_tx = bitcoind_client.fund_raw_transaction(raw_tx);
+ let change_output_position = funded_tx.changepos;
assert!(change_output_position == 0 || change_output_position == 1);
- let funded_tx = format!("\"{}\"", funded_tx["hex"].as_str().unwrap()).to_string();
- let signed_tx = rpc.call_method("signrawtransactionwithwallet",
- &vec![serde_json::json!(funded_tx)]).unwrap();
- assert_eq!(signed_tx["complete"].as_bool().unwrap(), true);
- let final_tx: Transaction = encode::deserialize(&utils::hex_to_vec(&signed_tx["hex"].as_str().unwrap()).unwrap()).unwrap();
+
+ // Sign the final funding transaction and broadcast it.
+ let signed_tx = bitcoind_client.sign_raw_transaction_with_wallet(funded_tx.hex);
+ assert_eq!(signed_tx.complete, true);
+ let final_tx: Transaction = encode::deserialize(&hex_utils::to_vec(&signed_tx.hex).unwrap()).unwrap();
let outpoint = OutPoint {
txid: final_tx.txid(),
index: if change_output_position == 0 { 1 } else { 0 }
};
- loop_channel_manager.funding_transaction_generated(&temporary_channel_id, outpoint);
+ loop_channel_manager.funding_transaction_generated(&temporary_channel_id,
+ outpoint);
pending_txs.insert(outpoint, final_tx);
- check_for_more_events = true;
},
Event::FundingBroadcastSafe { funding_txo, .. } => {
let funding_tx = pending_txs.remove(&funding_txo).unwrap();
- bitcoind_rpc_client.broadcast_transaction(&funding_tx);
+ bitcoind_client.broadcast_transaction(&funding_tx);
+ println!("\nEVENT: broadcasted funding transaction");
+ print!("> "); io::stdout().flush().unwrap();
},
Event::PaymentReceived { payment_hash, payment_secret, amt: amt_msat } => {
- let payment_info = htlcs.lock().unwrap();
- if let Some(htlc_info) = payment_info.get(&payment_hash) {
- assert!(loop_channel_manager.claim_funds(htlc_info.1.unwrap().clone(),
- &payment_secret, amt_msat));
+ let mut payments = payment_storage.lock().unwrap();
+ if let Some((Some(preimage), _, _)) = payments.get(&payment_hash) {
+ assert!(loop_channel_manager.claim_funds(preimage.clone(), &payment_secret,
+ amt_msat));
+ println!("\nEVENT: received payment from payment_hash {} of {} satoshis",
+ hex_utils::hex_str(&payment_hash.0), amt_msat / 1000);
+ print!("> "); io::stdout().flush().unwrap();
+ let (_, _, ref mut status) = payments.get_mut(&payment_hash).unwrap();
+ *status = HTLCStatus::Succeeded;
} else {
+ println!("\nERROR: we received a payment but didn't know the preimage");
+ print!("> "); io::stdout().flush().unwrap();
loop_channel_manager.fail_htlc_backwards(&payment_hash, &payment_secret);
+ payments.insert(payment_hash, (None, HTLCDirection::Inbound, HTLCStatus::Failed));
}
- check_for_more_events = true;
},
Event::PaymentSent { payment_preimage } => {
- let payment_info = htlcs.lock().unwrap();
- for (invoice, preimage_option, _) in payment_info.values() {
- if let Some(preimage) = preimage_option {
- if payment_preimage == *preimage {
- println!("NEW EVENT: successfully sent payment from invoice {} with preimage {}",
- invoice, utils::hex_str(&payment_preimage.0));
- }
+ let hashed = PaymentHash(Sha256::hash(&payment_preimage.0).into_inner());
+ let mut payments = payment_storage.lock().unwrap();
+ for (payment_hash, (preimage_option, _, status)) in payments.iter_mut() {
+ if *payment_hash == hashed {
+ *preimage_option = Some(payment_preimage);
+ *status = HTLCStatus::Succeeded;
+ println!("\nNEW EVENT: successfully sent payment from payment hash \
+ {:?} with preimage {:?}", hex_utils::hex_str(&payment_hash.0),
+ hex_utils::hex_str(&payment_preimage.0));
+ print!("> "); io::stdout().flush().unwrap();
}
}
},
- Event::PaymentFailed { payment_hash, rejected_by_dest } => {
- let payment_info = htlcs.lock().unwrap();
- let htlc_info = payment_info.get(&payment_hash).unwrap();
- print!("NEW EVENT: Failed to send payment to invoice {}:", htlc_info.0);
+ Event::PaymentFailed { payment_hash, rejected_by_dest, .. } => {
+ print!("\nNEW EVENT: Failed to send payment to payment hash {:?}: ",
+ hex_utils::hex_str(&payment_hash.0));
if rejected_by_dest {
println!("rejected by destination node");
} else {
println!("route failed");
+ }
+ print!("> "); io::stdout().flush().unwrap();
+
+ let mut payments = payment_storage.lock().unwrap();
+ if payments.contains_key(&payment_hash) {
+ let (_, _, ref mut status) = payments.get_mut(&payment_hash).unwrap();
+ *status = HTLCStatus::Failed;
}
},
Event::PendingHTLCsForwardable { .. } => {
loop_channel_manager.process_pending_htlc_forwards();
- check_for_more_events = true;
},
Event::SpendableOutputs { outputs } => {
- let addr_args = vec![serde_json::json!("LDK output address")];
- let destination_address_str = rpc.call_method("getnewaddress", &addr_args).unwrap();
- let destination_address = Address::from_str(destination_address_str.as_str().unwrap()).unwrap();
+ let destination_address = bitcoind_client.get_new_address();
let output_descriptors = &outputs.iter().map(|a| a).collect::<Vec<_>>();
- let tx_feerate = bitcoind_rpc_client.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
+ let tx_feerate = bitcoind_client.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
let spending_tx = keys_manager.spend_spendable_outputs(output_descriptors,
Vec::new(),
destination_address.script_pubkey(),
tx_feerate, &Secp256k1::new()).unwrap();
- bitcoind_rpc_client.broadcast_transaction(&spending_tx);
+ bitcoind_client.broadcast_transaction(&spending_tx);
// XXX maybe need to rescan and blah? but contrary to what matt's saying, it
// looks like spend_spendable's got us covered
}
}
}
+ thread::sleep(Duration::new(1, 0));
}
- pending_txs
}
fn main() {
- let bitcoind_host = "127.0.0.1".to_string();
- let bitcoind_port = 18443;
- let rpc_user = "polaruser".to_string();
- let rpc_password = "polarpass".to_string();
- let bitcoind_client = Arc::new(BitcoindClient::new(bitcoind_host.clone(), bitcoind_port, None,
- rpc_user.clone(), rpc_password.clone()).unwrap());
+ let args = match cli::parse_startup_args() {
+ Ok(user_args) => user_args,
+ Err(()) => return
+ };
+
+ // Initialize the LDK data directory if necessary.
+ let ldk_data_dir = format!("{}/.ldk", args.ldk_storage_dir_path);
+ fs::create_dir_all(ldk_data_dir.clone()).unwrap();
+
+ // Initialize our bitcoind client.
+ let bitcoind_client = Arc::new(BitcoindClient::new(args.bitcoind_rpc_host.clone(),
+ args.bitcoind_rpc_port,
+ args.bitcoind_rpc_username.clone(),
+ args.bitcoind_rpc_password.clone()).unwrap());
+ let mut bitcoind_rpc_client = bitcoind_client.get_new_rpc_client().unwrap();
// ## Setup
// Step 1: Initialize the FeeEstimator
+
+ // BitcoindClient implements the FeeEstimator trait, so it'll act as our fee estimator.
let fee_estimator = bitcoind_client.clone();
// Step 2: Initialize the Logger
- let logger = Arc::new(FilesystemLogger{});
+ let logger = Arc::new(FilesystemLogger::new(ldk_data_dir.clone()));
// Step 3: Initialize the BroadcasterInterface
+
+ // BitcoindClient implements the BroadcasterInterface trait, so it'll act as our transaction
+ // broadcaster.
let broadcaster = bitcoind_client.clone();
// Step 4: Initialize Persist
- let persister = Arc::new(FilesystemPersister::new(".".to_string()));
+ let persister = Arc::new(FilesystemPersister::new(ldk_data_dir.clone()));
// Step 5: Initialize the ChainMonitor
let chain_monitor: Arc<ArcChainMonitor> = Arc::new(ChainMonitor::new(None, broadcaster.clone(),
persister.clone()));
// Step 6: Initialize the KeysManager
- let node_privkey = if let Ok(seed) = fs::read("./key_seed") { // the private key that corresponds
- assert_eq!(seed.len(), 32); // to our lightning node's pubkey
+
+ // The key seed that we use to derive the node privkey (that corresponds to the node pubkey) and
+ // other secret key material.
+ let keys_seed_path = format!("{}/keys_seed", ldk_data_dir.clone());
+ let keys_seed = if let Ok(seed) = fs::read(keys_seed_path.clone()) {
+ assert_eq!(seed.len(), 32);
let mut key = [0; 32];
key.copy_from_slice(&seed);
key
} else {
let mut key = [0; 32];
thread_rng().fill_bytes(&mut key);
- let mut f = File::create("./key_seed").unwrap();
- f.write_all(&key).expect("Failed to write seed to disk");
- f.sync_all().expect("Failed to sync seed to disk");
+ let mut f = File::create(keys_seed_path).unwrap();
+ f.write_all(&key).expect("Failed to write node keys seed to disk");
+ f.sync_all().expect("Failed to sync node keys seed to disk");
key
};
let cur = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap();
- let keys_manager = Arc::new(KeysManager::new(&node_privkey, cur.as_secs(), cur.subsec_nanos()));
+ let keys_manager = Arc::new(KeysManager::new(&keys_seed, cur.as_secs(), cur.subsec_nanos()));
// Step 7: Read ChannelMonitor state from disk
- let mut outpoint_to_channelmonitor = read_channelmonitors_from_disk("./monitors".to_string(),
- keys_manager.clone()).unwrap();
+ let monitors_path = format!("{}/monitors", ldk_data_dir.clone());
+ let mut outpoint_to_channelmonitor = disk::read_channelmonitors_from_disk(monitors_path.to_string(),
+ keys_manager.clone()).unwrap();
- // Step 9: Read ChannelManager state from disk
+ // Step 9: Initialize the ChannelManager
let user_config = UserConfig::default();
- let mut channel_manager: ChannelManager;
- let mut channel_manager_last_blockhash: Option<BlockHash> = None;
- if let Ok(mut f) = fs::File::open("./manager") {
- let (last_block_hash_option, channel_manager_from_disk) = {
+ let runtime = Runtime::new().unwrap();
+ let mut restarting_node = true;
+ let (channel_manager_blockhash, mut channel_manager) = {
+ if let Ok(mut f) = fs::File::open(format!("{}/manager", ldk_data_dir.clone())) {
let mut channel_monitor_mut_references = Vec::new();
for (_, channel_monitor) in outpoint_to_channelmonitor.iter_mut() {
channel_monitor_mut_references.push(&mut channel_monitor.1);
chain_monitor.clone(), broadcaster.clone(),
logger.clone(), user_config,
channel_monitor_mut_references);
- <(Option<BlockHash>, ChannelManager)>::read(&mut f, read_args).unwrap()
- };
- channel_manager = channel_manager_from_disk;
- channel_manager_last_blockhash = last_block_hash_option;
- } else {
- let mut bitcoind_rpc_client = bitcoind_client.bitcoind_rpc_client.lock().unwrap();
- let current_chain_height: usize = bitcoind_rpc_client
- .call_method("getblockchaininfo", &vec![]).unwrap()["blocks"].as_u64().unwrap() as usize;
- channel_manager = channelmanager::ChannelManager::new(Network::Regtest, fee_estimator.clone(),
- chain_monitor.clone(), broadcaster.clone(),
- logger.clone(), keys_manager.clone(),
- user_config, current_chain_height);
- }
+ <(BlockHash, ChannelManager)>::read(&mut f, read_args).unwrap()
+ } else { // We're starting a fresh node.
+ restarting_node = false;
+ let getinfo_resp = bitcoind_client.get_blockchain_info();
+ let chain_params = ChainParameters {
+ network: NETWORK,
+ latest_hash: getinfo_resp.latest_blockhash,
+ latest_height: getinfo_resp.latest_height,
+ };
+ let fresh_channel_manager = channelmanager::ChannelManager::new(fee_estimator.clone(),
+ chain_monitor.clone(),
+ broadcaster.clone(),
+ logger.clone(),
+ keys_manager.clone(),
+ user_config, chain_params);
+ (getinfo_resp.latest_blockhash, fresh_channel_manager)
+ }
+ };
- // Step 10: Sync ChannelMonitors to chain tip if restarting
- let mut chain_tip = None;
+ // Step 10: Sync ChannelMonitors and ChannelManager to chain tip
let mut chain_listener_channel_monitors = Vec::new();
let mut cache = UnboundedCache::new();
- let rpc_credentials = base64::encode(format!("{}:{}", rpc_user, rpc_password));
- let mut block_source = RpcClient::new(&rpc_credentials, HttpEndpoint::for_host(bitcoind_host)
- .with_port(bitcoind_port)).unwrap();
- let runtime = Runtime::new().expect("Unable to create a runtime");
- if outpoint_to_channelmonitor.len() > 0 {
+ let mut chain_tip: Option<poll::ValidatedBlockHeader> = None;
+ if restarting_node {
+ let mut chain_listeners = vec![
+ (channel_manager_blockhash, &mut channel_manager as &mut dyn chain::Listen)];
+
for (outpoint, blockhash_and_monitor) in outpoint_to_channelmonitor.drain() {
let blockhash = blockhash_and_monitor.0;
let channel_monitor = blockhash_and_monitor.1;
- chain_listener_channel_monitors.push((blockhash, (RefCell::new(channel_monitor),
+ chain_listener_channel_monitors.push((blockhash, (channel_monitor,
broadcaster.clone(), fee_estimator.clone(),
logger.clone()), outpoint));
}
- let mut chain_listeners = Vec::new();
for monitor_listener_info in chain_listener_channel_monitors.iter_mut() {
chain_listeners.push((monitor_listener_info.0,
&mut monitor_listener_info.1 as &mut dyn chain::Listen));
}
- // Because `sync_listeners` is an async function and we want to run it synchronously,
- // we run it in a tokio Runtime.
- chain_tip = Some(runtime.block_on(init::sync_listeners(&mut block_source, Network::Regtest,
- &mut cache, chain_listeners)).unwrap());
+ chain_tip = Some(runtime.block_on(init::synchronize_listeners(&mut bitcoind_rpc_client, NETWORK,
+ &mut cache, chain_listeners)).unwrap());
}
// Step 11: Give ChannelMonitors to ChainMonitor
- if chain_listener_channel_monitors.len() > 0 {
- for item in chain_listener_channel_monitors.drain(..) {
- let channel_monitor = item.1.0.into_inner();
- let funding_outpoint = item.2;
- chain_monitor.watch_channel(funding_outpoint, channel_monitor).unwrap();
- }
- }
-
- // Step 12: Sync ChannelManager to chain tip if restarting
- if let Some(channel_manager_blockhash) = channel_manager_last_blockhash {
- let chain_listener = vec![
- (channel_manager_blockhash, &mut channel_manager as &mut dyn chain::Listen)];
- chain_tip = Some(runtime.block_on(init::sync_listeners(&mut block_source, Network::Regtest,
- &mut cache, chain_listener)).unwrap());
+ for item in chain_listener_channel_monitors.drain(..) {
+ let channel_monitor = item.1.0;
+ let funding_outpoint = item.2;
+ chain_monitor.watch_channel(funding_outpoint, channel_monitor).unwrap();
}
// Step 13: Optional: Initialize the NetGraphMsgHandler
// XXX persist routing data
- let genesis = genesis_block(Network::Regtest).header.block_hash();
+ let genesis = genesis_block(NETWORK).header.block_hash();
let router = Arc::new(NetGraphMsgHandler::new(genesis, None::<Arc<dyn chain::Access>>, logger.clone()));
// Step 14: Initialize the PeerManager
- let channel_manager = Arc::new(channel_manager);
+ let channel_manager: Arc<ChannelManager> = Arc::new(channel_manager);
let mut ephemeral_bytes = [0; 32];
rand::thread_rng().fill_bytes(&mut ephemeral_bytes);
let lightning_msg_handler = MessageHandler { chan_handler: channel_manager.clone(),
&ephemeral_bytes, logger.clone()));
// ## Running LDK
- // Step 15: Initialize LDK Event Handling
- let (event_ntfn_sender, mut event_ntfn_receiver) = mpsc::channel(2);
- let peer_manager_event_listener = peer_manager.clone();
- let channel_manager_event_listener = channel_manager.clone();
- let chain_monitor_event_listener = chain_monitor.clone();
- let payment_info: PaymentInfoStorage = Arc::new(Mutex::new(HashMap::new()));
- let payment_info_for_events = payment_info.clone();
- thread::spawn(move || async move {
- let mut pending_txs = HashMap::new();
- loop {
- event_ntfn_receiver.recv().await.unwrap();
- pending_txs = handle_ldk_events(peer_manager_event_listener.clone(),
- channel_manager_event_listener.clone(),
- chain_monitor_event_listener.clone(),
- bitcoind_client.clone(), keys_manager.clone(),
- pending_txs, payment_info_for_events.clone());
- }
- });
-
// Step 16: Initialize Peer Connection Handling
+
+ // We poll for events in handle_ldk_events(..) rather than waiting for them over the
+ // mpsc::channel, so we can leave the event receiver as unused.
+ let (event_ntfn_sender, mut _event_ntfn_receiver) = mpsc::channel(2);
let peer_manager_connection_handler = peer_manager.clone();
let event_notifier = event_ntfn_sender.clone();
- thread::spawn(move || async move {
- let listener = std::net::TcpListener::bind("0.0.0.0:9735").unwrap();
+ let listening_port = args.ldk_peer_listening_port;
+ runtime.spawn(async move {
+ let listener = std::net::TcpListener::bind(format!("0.0.0.0:{}", listening_port)).unwrap();
loop {
let tcp_stream = listener.accept().unwrap().0;
lightning_net_tokio::setup_inbound(peer_manager_connection_handler.clone(),
});
// Step 17: Connect and Disconnect Blocks
- let mut chain_poller = poll::ChainPoller::new(&mut block_source, Network::Regtest);
if chain_tip.is_none() {
- match runtime.block_on(chain_poller.poll_chain_tip(None)).unwrap() {
- ChainTip::Better(header) => chain_tip = Some(header),
- _ => panic!("Unexpected chain tip")
- }
+ chain_tip = Some(runtime.block_on(init::validate_best_block_header(&mut bitcoind_rpc_client)).unwrap());
}
- let chain_listener = (chain_monitor.clone(), channel_manager.clone());
- let _spv_client = SpvClient::new(chain_tip.unwrap(), chain_poller, &mut cache, &chain_listener);
+ let channel_manager_listener = channel_manager.clone();
+ let chain_monitor_listener = chain_monitor.clone();
+ runtime.spawn(async move {
+ let chain_poller = poll::ChainPoller::new(&mut bitcoind_rpc_client, NETWORK);
+ let chain_listener = (chain_monitor_listener, channel_manager_listener);
+ let mut spv_client = SpvClient::new(chain_tip.unwrap(), chain_poller, &mut cache,
+ &chain_listener);
+ loop {
+ spv_client.poll_best_tip().await.unwrap();
+ thread::sleep(Duration::new(1, 0));
+ }
+ });
// Step 17 & 18: Initialize ChannelManager persistence & Once Per Minute: ChannelManager's
// timer_chan_freshness_every_min() and PeerManager's timer_tick_occurred
+ let runtime_handle = runtime.handle();
+ let data_dir = ldk_data_dir.clone();
let persist_channel_manager_callback = move |node: &ChannelManager| {
- FilesystemPersister::persist_manager("./".to_string(), &*node)
+ FilesystemPersister::persist_manager(data_dir.clone(), &*node)
};
- BackgroundProcessor::start(persist_channel_manager_callback, channel_manager.clone(), logger.clone());
+ BackgroundProcessor::start(persist_channel_manager_callback, channel_manager.clone(),
+ logger.clone());
+
let peer_manager_processor = peer_manager.clone();
- thread::spawn(move || {
+ runtime_handle.spawn(async move {
loop {
- peer_manager_processor.timer_tick_occured();
+ peer_manager_processor.timer_tick_occurred();
thread::sleep(Duration::new(60, 0));
}
});
- cli::poll_for_user_input(peer_manager.clone(), channel_manager.clone(), event_ntfn_sender.clone());
+
+ // Step 15: Initialize LDK Event Handling
+ let peer_manager_event_listener = peer_manager.clone();
+ let channel_manager_event_listener = channel_manager.clone();
+ let chain_monitor_event_listener = chain_monitor.clone();
+ let keys_manager_listener = keys_manager.clone();
+ let payment_info: PaymentInfoStorage = Arc::new(Mutex::new(HashMap::new()));
+ let payment_info_for_events = payment_info.clone();
+ let handle = runtime_handle.clone();
+ thread::spawn(move || {
+ handle_ldk_events(peer_manager_event_listener, channel_manager_event_listener,
+ chain_monitor_event_listener, bitcoind_client.clone(),
+ keys_manager_listener, payment_info_for_events);
+ });
+
+ // Reconnect to channel peers if possible.
+ let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
+ match disk::read_channel_peer_data(Path::new(&peer_data_path)) {
+ Ok(mut info) => {
+ for (pubkey, peer_addr) in info.drain() {
+ let _ = cli::connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone(),
+ event_ntfn_sender.clone(), handle.clone());
+ }
+ },
+ Err(e) => println!("ERROR: errored reading channel peer info from disk: {:?}", e),
+ }
+
+ // Start the CLI.
+ cli::poll_for_user_input(peer_manager.clone(), channel_manager.clone(), router.clone(),
+ payment_info, keys_manager.get_node_secret(), event_ntfn_sender,
+ ldk_data_dir.clone(), logger.clone(), handle);
}
projects / ldk-sample / blobdiff