+//! Utilities that handle persisting Rust-Lightning data to disk via standard filesystem APIs.
+
+#![deny(broken_intra_doc_links)]
+#![deny(missing_docs)]
+
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+
+#![cfg_attr(all(test, feature = "_bench_unstable"), feature(test))]
+#[cfg(all(test, feature = "_bench_unstable"))] extern crate test;
+
mod util;
extern crate lightning;
extern crate bitcoin;
extern crate libc;
-use bitcoin::hashes::hex::ToHex;
-use crate::util::DiskWriteable;
-use lightning::chain;
-use lightning::chain::chaininterface::{BroadcasterInterface, FeeEstimator};
-use lightning::chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateErr};
-use lightning::chain::channelmonitor;
+use bitcoin::hash_types::{BlockHash, Txid};
+use bitcoin::hashes::hex::FromHex;
+use lightning::chain::channelmonitor::ChannelMonitor;
use lightning::chain::keysinterface::{Sign, KeysInterface};
-use lightning::chain::transaction::OutPoint;
-use lightning::ln::channelmanager::ChannelManager;
-use lightning::util::logger::Logger;
-use lightning::util::ser::Writeable;
+use lightning::util::ser::{ReadableArgs, Writeable};
+use lightning::util::persist::KVStorePersister;
use std::fs;
-use std::io::Error;
-use std::path::PathBuf;
-use std::sync::Arc;
-
-#[cfg(test)]
-use {
- lightning::util::ser::ReadableArgs,
- bitcoin::{BlockHash, Txid},
- bitcoin::hashes::hex::FromHex,
- std::collections::HashMap,
- std::io::Cursor
-};
+use std::io::Cursor;
+use std::ops::Deref;
+use std::path::{Path, PathBuf};
/// FilesystemPersister persists channel data on disk, where each channel's
/// data is stored in a file named after its funding outpoint.
path_to_channel_data: String,
}
-impl<Signer: Sign> DiskWriteable for ChannelMonitor<Signer> {
- fn write_to_file(&self, writer: &mut fs::File) -> Result<(), Error> {
- self.write(writer)
- }
-}
-
-impl<Signer: Sign, M, T, K, F, L> DiskWriteable for ChannelManager<Signer, Arc<M>, Arc<T>, Arc<K>, Arc<F>, Arc<L>>
-where M: chain::Watch<Signer>,
- T: BroadcasterInterface,
- K: KeysInterface<Signer=Signer>,
- F: FeeEstimator,
- L: Logger,
-{
- fn write_to_file(&self, writer: &mut fs::File) -> Result<(), std::io::Error> {
- self.write(writer)
- }
-}
-
impl FilesystemPersister {
/// Initialize a new FilesystemPersister and set the path to the individual channels'
/// files.
}
}
+ /// Get the directory which was provided when this persister was initialized.
pub fn get_data_dir(&self) -> String {
self.path_to_channel_data.clone()
}
- pub(crate) fn path_to_monitor_data(&self) -> PathBuf {
- let mut path = PathBuf::from(self.path_to_channel_data.clone());
- path.push("monitors");
- path
- }
-
- /// Writes the provided `ChannelManager` to the path provided at `FilesystemPersister`
- /// initialization, within a file called "manager".
- pub fn persist_manager<Signer, M, T, K, F, L>(
- data_dir: String,
- manager: &ChannelManager<Signer, Arc<M>, Arc<T>, Arc<K>, Arc<F>, Arc<L>>
- ) -> Result<(), std::io::Error>
- where Signer: Sign,
- M: chain::Watch<Signer>,
- T: BroadcasterInterface,
- K: KeysInterface<Signer=Signer>,
- F: FeeEstimator,
- L: Logger
+ /// Read `ChannelMonitor`s from disk.
+ pub fn read_channelmonitors<Signer: Sign, K: Deref> (
+ &self, keys_manager: K
+ ) -> Result<Vec<(BlockHash, ChannelMonitor<Signer>)>, std::io::Error>
+ where K::Target: KeysInterface<Signer=Signer> + Sized,
{
- let path = PathBuf::from(data_dir);
- util::write_to_file(path, "manager".to_string(), manager)
- }
-
- #[cfg(test)]
- fn load_channel_data<Keys: KeysInterface>(&self, keys: &Keys) ->
- Result<HashMap<OutPoint, ChannelMonitor<Keys::Signer>>, ChannelMonitorUpdateErr> {
- if let Err(_) = fs::create_dir_all(self.path_to_monitor_data()) {
- return Err(ChannelMonitorUpdateErr::PermanentFailure);
+ let mut path = PathBuf::from(&self.path_to_channel_data);
+ path.push("monitors");
+ if !Path::new(&path).exists() {
+ return Ok(Vec::new());
+ }
+ let mut res = Vec::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::InvalidData,
+ "Invalid ChannelMonitor file name",
+ ));
+ }
+ if filename.unwrap().ends_with(".tmp") {
+ // If we were in the middle of committing an new update and crashed, it should be
+ // safe to ignore the update - we should never have returned to the caller and
+ // irrevocably committed to the new state in any way.
+ continue;
}
- let mut res = HashMap::new();
- for file_option in fs::read_dir(self.path_to_monitor_data()).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(ChannelMonitorUpdateErr::PermanentFailure);
- }
-
- let txid = Txid::from_hex(filename.unwrap().split_at(64).0);
- if txid.is_err() { return Err(ChannelMonitorUpdateErr::PermanentFailure); }
- let index = filename.unwrap().split_at(65).1.split('.').next().unwrap().parse();
- if index.is_err() { return Err(ChannelMonitorUpdateErr::PermanentFailure); }
+ let txid = Txid::from_hex(filename.unwrap().split_at(64).0);
+ if txid.is_err() {
+ return Err(std::io::Error::new(
+ std::io::ErrorKind::InvalidData,
+ "Invalid tx ID in filename",
+ ));
+ }
- let contents = fs::read(&file.path());
- if contents.is_err() { return Err(ChannelMonitorUpdateErr::PermanentFailure); }
+ let index = filename.unwrap().split_at(65).1.parse();
+ if index.is_err() {
+ return Err(std::io::Error::new(
+ std::io::ErrorKind::InvalidData,
+ "Invalid tx index in filename",
+ ));
+ }
- if let Ok((_, loaded_monitor)) =
- <(BlockHash, ChannelMonitor<Keys::Signer>)>::read(&mut Cursor::new(&contents.unwrap()), keys) {
- res.insert(OutPoint { txid: txid.unwrap(), index: index.unwrap() }, loaded_monitor);
- } else {
- return Err(ChannelMonitorUpdateErr::PermanentFailure);
+ let contents = fs::read(&file.path())?;
+ let mut buffer = Cursor::new(&contents);
+ match <(BlockHash, ChannelMonitor<Signer>)>::read(&mut buffer, &*keys_manager) {
+ Ok((blockhash, channel_monitor)) => {
+ if channel_monitor.get_funding_txo().0.txid != txid.unwrap() || channel_monitor.get_funding_txo().0.index != index.unwrap() {
+ return Err(std::io::Error::new(std::io::ErrorKind::InvalidData, "ChannelMonitor was stored in the wrong file"));
}
+ res.push((blockhash, channel_monitor));
+ }
+ Err(e) => return Err(std::io::Error::new(
+ std::io::ErrorKind::InvalidData,
+ format!("Failed to deserialize ChannelMonitor: {}", e),
+ ))
}
- Ok(res)
}
-}
-
-impl<ChannelSigner: Sign + Send + Sync> channelmonitor::Persist<ChannelSigner> for FilesystemPersister {
- fn persist_new_channel(&self, funding_txo: OutPoint, monitor: &ChannelMonitor<ChannelSigner>) -> Result<(), ChannelMonitorUpdateErr> {
- let filename = format!("{}_{}", funding_txo.txid.to_hex(), funding_txo.index);
- util::write_to_file(self.path_to_monitor_data(), filename, monitor)
- .map_err(|_| ChannelMonitorUpdateErr::PermanentFailure)
+ Ok(res)
}
+}
- fn update_persisted_channel(&self, funding_txo: OutPoint, _update: &ChannelMonitorUpdate, monitor: &ChannelMonitor<ChannelSigner>) -> Result<(), ChannelMonitorUpdateErr> {
- let filename = format!("{}_{}", funding_txo.txid.to_hex(), funding_txo.index);
- util::write_to_file(self.path_to_monitor_data(), filename, monitor)
- .map_err(|_| ChannelMonitorUpdateErr::PermanentFailure)
+impl KVStorePersister for FilesystemPersister {
+ fn persist<W: Writeable>(&self, key: &str, object: &W) -> std::io::Result<()> {
+ let mut dest_file = PathBuf::from(self.path_to_channel_data.clone());
+ dest_file.push(key);
+ util::write_to_file(dest_file, object)
}
}
use bitcoin::blockdata::block::{Block, BlockHeader};
use bitcoin::hashes::hex::FromHex;
use bitcoin::Txid;
- use lightning::chain::channelmonitor::{Persist, ChannelMonitorUpdateErr};
+ use lightning::chain::ChannelMonitorUpdateErr;
+ use lightning::chain::chainmonitor::Persist;
use lightning::chain::transaction::OutPoint;
- use lightning::{check_closed_broadcast, check_added_monitors};
+ use lightning::{check_closed_broadcast, check_closed_event, check_added_monitors};
use lightning::ln::features::InitFeatures;
use lightning::ln::functional_test_utils::*;
- use lightning::ln::msgs::ErrorAction;
- use lightning::util::events::{MessageSendEventsProvider, MessageSendEvent};
+ use lightning::util::events::{ClosureReason, MessageSendEventsProvider};
use lightning::util::test_utils;
use std::fs;
#[cfg(target_os = "windows")]
// Check that the persisted channel data is empty before any channels are
// open.
- let mut persisted_chan_data_0 = persister_0.load_channel_data(nodes[0].keys_manager).unwrap();
- assert_eq!(persisted_chan_data_0.keys().len(), 0);
- let mut persisted_chan_data_1 = persister_1.load_channel_data(nodes[1].keys_manager).unwrap();
- assert_eq!(persisted_chan_data_1.keys().len(), 0);
+ let mut persisted_chan_data_0 = persister_0.read_channelmonitors(nodes[0].keys_manager).unwrap();
+ assert_eq!(persisted_chan_data_0.len(), 0);
+ let mut persisted_chan_data_1 = persister_1.read_channelmonitors(nodes[1].keys_manager).unwrap();
+ assert_eq!(persisted_chan_data_1.len(), 0);
// Helper to make sure the channel is on the expected update ID.
macro_rules! check_persisted_data {
($expected_update_id: expr) => {
- persisted_chan_data_0 = persister_0.load_channel_data(nodes[0].keys_manager).unwrap();
- assert_eq!(persisted_chan_data_0.keys().len(), 1);
- for mon in persisted_chan_data_0.values() {
+ persisted_chan_data_0 = persister_0.read_channelmonitors(nodes[0].keys_manager).unwrap();
+ assert_eq!(persisted_chan_data_0.len(), 1);
+ for (_, mon) in persisted_chan_data_0.iter() {
assert_eq!(mon.get_latest_update_id(), $expected_update_id);
}
- persisted_chan_data_1 = persister_1.load_channel_data(nodes[1].keys_manager).unwrap();
- assert_eq!(persisted_chan_data_1.keys().len(), 1);
- for mon in persisted_chan_data_1.values() {
+ persisted_chan_data_1 = persister_1.read_channelmonitors(nodes[1].keys_manager).unwrap();
+ assert_eq!(persisted_chan_data_1.len(), 1);
+ for (_, mon) in persisted_chan_data_1.iter() {
assert_eq!(mon.get_latest_update_id(), $expected_update_id);
}
}
check_persisted_data!(0);
// Send a few payments and make sure the monitors are updated to the latest.
- send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
+ send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
check_persisted_data!(5);
- send_payment(&nodes[1], &vec!(&nodes[0])[..], 4000000, 4_000_000);
+ send_payment(&nodes[1], &vec!(&nodes[0])[..], 4000000);
check_persisted_data!(10);
// Force close because cooperative close doesn't result in any persisted
// updates.
nodes[0].node.force_close_channel(&nodes[0].node.list_channels()[0].channel_id).unwrap();
- check_closed_broadcast!(nodes[0], false);
+ check_closed_event!(nodes[0], 1, ClosureReason::HolderForceClosed);
+ check_closed_broadcast!(nodes[0], true);
check_added_monitors!(nodes[0], 1);
let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
assert_eq!(node_txn.len(), 1);
- let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
- connect_block(&nodes[1], &Block { header, txdata: vec![node_txn[0].clone(), node_txn[0].clone()]}, 1);
- check_closed_broadcast!(nodes[1], false);
+ let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
+ connect_block(&nodes[1], &Block { header, txdata: vec![node_txn[0].clone(), node_txn[0].clone()]});
+ check_closed_broadcast!(nodes[1], true);
+ check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed);
check_added_monitors!(nodes[1], 1);
// Make sure everything is persisted as expected after close.
let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
nodes[1].node.force_close_channel(&chan.2).unwrap();
+ check_closed_event!(nodes[1], 1, ClosureReason::HolderForceClosed);
let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
+ let update_map = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap();
+ let update_id = update_map.get(&added_monitors[0].0.to_channel_id()).unwrap();
// Set the persister's directory to read-only, which should result in
// returning a permanent failure when we then attempt to persist a
txid: Txid::from_hex("8984484a580b825b9972d7adb15050b3ab624ccd731946b3eeddb92f4e7ef6be").unwrap(),
index: 0
};
- match persister.persist_new_channel(test_txo, &added_monitors[0].1) {
+ match persister.persist_new_channel(test_txo, &added_monitors[0].1, update_id.2) {
Err(ChannelMonitorUpdateErr::PermanentFailure) => {},
_ => panic!("unexpected result from persisting new channel")
}
let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
nodes[1].node.force_close_channel(&chan.2).unwrap();
+ check_closed_event!(nodes[1], 1, ClosureReason::HolderForceClosed);
let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
+ let update_map = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap();
+ let update_id = update_map.get(&added_monitors[0].0.to_channel_id()).unwrap();
// Create the persister with an invalid directory name and test that the
// channel fails to open because the directories fail to be created. There
txid: Txid::from_hex("8984484a580b825b9972d7adb15050b3ab624ccd731946b3eeddb92f4e7ef6be").unwrap(),
index: 0
};
- match persister.persist_new_channel(test_txo, &added_monitors[0].1) {
+ match persister.persist_new_channel(test_txo, &added_monitors[0].1, update_id.2) {
Err(ChannelMonitorUpdateErr::PermanentFailure) => {},
_ => panic!("unexpected result from persisting new channel")
}
added_monitors.clear();
}
}
+
+#[cfg(all(test, feature = "_bench_unstable"))]
+pub mod bench {
+ use test::Bencher;
+
+ #[bench]
+ fn bench_sends(bench: &mut Bencher) {
+ let persister_a = super::FilesystemPersister::new("bench_filesystem_persister_a".to_string());
+ let persister_b = super::FilesystemPersister::new("bench_filesystem_persister_b".to_string());
+ lightning::ln::channelmanager::bench::bench_two_sends(bench, persister_a, persister_b);
+ }
+}
projects / rust-lightning / blobdiff