From cc1b505b305c5339496d9aaca28c73b083ba602f Mon Sep 17 00:00:00 2001 From: Elias Rohrer Date: Tue, 1 Aug 2023 13:37:46 +0200 Subject: [PATCH] Migrate to `KVStore`/`FilesystemStore` Firstly, we switch our BP over to use `FilesystemStore`, which also gives us test coverage and ensures the compatibility. Then, we remove the superseded `KVStorePersister` trait and the `FilesystemPersister` code. --- bench/benches/bench.rs | 1 - lightning-background-processor/src/lib.rs | 103 ++++--- lightning-persister/Cargo.toml | 2 - lightning-persister/src/lib.rs | 338 ---------------------- lightning-persister/src/util.rs | 188 ------------ lightning/src/util/persist.rs | 51 ++-- 6 files changed, 94 insertions(+), 589 deletions(-) delete mode 100644 lightning-persister/src/util.rs diff --git a/bench/benches/bench.rs b/bench/benches/bench.rs index 54799f44c..3fc3abe68 100644 --- a/bench/benches/bench.rs +++ b/bench/benches/bench.rs @@ -15,7 +15,6 @@ criterion_group!(benches, lightning::routing::router::benches::generate_large_mpp_routes_with_probabilistic_scorer, lightning::sign::benches::bench_get_secure_random_bytes, lightning::ln::channelmanager::bench::bench_sends, - lightning_persister::bench::bench_sends, lightning_rapid_gossip_sync::bench::bench_reading_full_graph_from_file, lightning::routing::gossip::benches::read_network_graph, lightning::routing::gossip::benches::write_network_graph); diff --git a/lightning-background-processor/src/lib.rs b/lightning-background-processor/src/lib.rs index 8648920ec..353ed6738 100644 --- a/lightning-background-processor/src/lib.rs +++ b/lightning-background-processor/src/lib.rs @@ -500,9 +500,16 @@ use core::task; /// For example, in order to process background events in a [Tokio](https://tokio.rs/) task, you /// could setup `process_events_async` like this: /// ``` -/// # struct MyPersister {} -/// # impl lightning::util::persist::KVStorePersister for MyPersister { -/// # fn persist(&self, key: &str, object: &W) -> lightning::io::Result<()> { Ok(()) } +/// # use lightning::io; +/// # use std::sync::{Arc, Mutex}; +/// # use std::sync::atomic::{AtomicBool, Ordering}; +/// # use lightning_background_processor::{process_events_async, GossipSync}; +/// # struct MyStore {} +/// # impl lightning::util::persist::KVStore for MyStore { +/// # fn read(&self, namespace: &str, sub_namespace: &str, key: &str) -> io::Result> { Ok(Vec::new()) } +/// # fn write(&self, namespace: &str, sub_namespace: &str, key: &str, buf: &[u8]) -> io::Result<()> { Ok(()) } +/// # fn remove(&self, namespace: &str, sub_namespace: &str, key: &str, lazy: bool) -> io::Result<()> { Ok(()) } +/// # fn list(&self, namespace: &str, sub_namespace: &str) -> io::Result> { Ok(Vec::new()) } /// # } /// # struct MyEventHandler {} /// # impl MyEventHandler { @@ -514,23 +521,20 @@ use core::task; /// # fn send_data(&mut self, _data: &[u8], _resume_read: bool) -> usize { 0 } /// # fn disconnect_socket(&mut self) {} /// # } -/// # use std::sync::{Arc, Mutex}; -/// # use std::sync::atomic::{AtomicBool, Ordering}; -/// # use lightning_background_processor::{process_events_async, GossipSync}; /// # type MyBroadcaster = dyn lightning::chain::chaininterface::BroadcasterInterface + Send + Sync; /// # type MyFeeEstimator = dyn lightning::chain::chaininterface::FeeEstimator + Send + Sync; /// # type MyNodeSigner = dyn lightning::sign::NodeSigner + Send + Sync; /// # type MyUtxoLookup = dyn lightning::routing::utxo::UtxoLookup + Send + Sync; /// # type MyFilter = dyn lightning::chain::Filter + Send + Sync; /// # type MyLogger = dyn lightning::util::logger::Logger + Send + Sync; -/// # type MyChainMonitor = lightning::chain::chainmonitor::ChainMonitor, Arc, Arc, Arc, Arc>; +/// # type MyChainMonitor = lightning::chain::chainmonitor::ChainMonitor, Arc, Arc, Arc, Arc>; /// # type MyPeerManager = lightning::ln::peer_handler::SimpleArcPeerManager; /// # type MyNetworkGraph = lightning::routing::gossip::NetworkGraph>; /// # type MyGossipSync = lightning::routing::gossip::P2PGossipSync, Arc, Arc>; /// # type MyChannelManager = lightning::ln::channelmanager::SimpleArcChannelManager; /// # type MyScorer = Mutex, Arc>>; /// -/// # async fn setup_background_processing(my_persister: Arc, my_event_handler: Arc, my_chain_monitor: Arc, my_channel_manager: Arc, my_gossip_sync: Arc, my_logger: Arc, my_scorer: Arc, my_peer_manager: Arc) { +/// # async fn setup_background_processing(my_persister: Arc, my_event_handler: Arc, my_chain_monitor: Arc, my_channel_manager: Arc, my_gossip_sync: Arc, my_logger: Arc, my_scorer: Arc, my_peer_manager: Arc) { /// let background_persister = Arc::clone(&my_persister); /// let background_event_handler = Arc::clone(&my_event_handler); /// let background_chain_mon = Arc::clone(&my_chain_monitor); @@ -866,8 +870,8 @@ mod tests { use lightning::util::config::UserConfig; use lightning::util::ser::Writeable; use lightning::util::test_utils; - use lightning::util::persist::KVStorePersister; - use lightning_persister::FilesystemPersister; + use lightning::util::persist::{KVStore, CHANNEL_MANAGER_PERSISTENCE_NAMESPACE, CHANNEL_MANAGER_PERSISTENCE_SUB_NAMESPACE, CHANNEL_MANAGER_PERSISTENCE_KEY, NETWORK_GRAPH_PERSISTENCE_NAMESPACE, NETWORK_GRAPH_PERSISTENCE_SUB_NAMESPACE, NETWORK_GRAPH_PERSISTENCE_KEY, SCORER_PERSISTENCE_NAMESPACE, SCORER_PERSISTENCE_SUB_NAMESPACE, SCORER_PERSISTENCE_KEY}; + use lightning_persister::fs_store::FilesystemStore; use std::collections::VecDeque; use std::{fs, env}; use std::path::PathBuf; @@ -906,7 +910,7 @@ mod tests { >, Arc>; - type ChainMonitor = chainmonitor::ChainMonitor, Arc, Arc, Arc, Arc>; + type ChainMonitor = chainmonitor::ChainMonitor, Arc, Arc, Arc, Arc>; type PGS = Arc>>, Arc, Arc>>; type RGS = Arc>>, Arc>>; @@ -917,7 +921,7 @@ mod tests { rapid_gossip_sync: RGS, peer_manager: Arc, Arc, IgnoringMessageHandler, Arc, IgnoringMessageHandler, Arc>>, chain_monitor: Arc, - persister: Arc, + kv_store: Arc, tx_broadcaster: Arc, network_graph: Arc>>, logger: Arc, @@ -941,9 +945,9 @@ mod tests { impl Drop for Node { fn drop(&mut self) { - let data_dir = self.persister.get_data_dir(); + let data_dir = self.kv_store.get_data_dir(); match fs::remove_dir_all(data_dir.clone()) { - Err(e) => println!("Failed to remove test persister directory {}: {}", data_dir, e), + Err(e) => println!("Failed to remove test store directory {}: {}", data_dir.display(), e), _ => {} } } @@ -954,13 +958,13 @@ mod tests { graph_persistence_notifier: Option>, manager_error: Option<(std::io::ErrorKind, &'static str)>, scorer_error: Option<(std::io::ErrorKind, &'static str)>, - filesystem_persister: FilesystemPersister, + kv_store: FilesystemStore, } impl Persister { - fn new(data_dir: String) -> Self { - let filesystem_persister = FilesystemPersister::new(data_dir); - Self { graph_error: None, graph_persistence_notifier: None, manager_error: None, scorer_error: None, filesystem_persister } + fn new(data_dir: PathBuf) -> Self { + let kv_store = FilesystemStore::new(data_dir); + Self { graph_error: None, graph_persistence_notifier: None, manager_error: None, scorer_error: None, kv_store } } fn with_graph_error(self, error: std::io::ErrorKind, message: &'static str) -> Self { @@ -980,15 +984,25 @@ mod tests { } } - impl KVStorePersister for Persister { - fn persist(&self, key: &str, object: &W) -> std::io::Result<()> { - if key == "manager" { + impl KVStore for Persister { + fn read(&self, namespace: &str, sub_namespace: &str, key: &str) -> lightning::io::Result> { + self.kv_store.read(namespace, sub_namespace, key) + } + + fn write(&self, namespace: &str, sub_namespace: &str, key: &str, buf: &[u8]) -> lightning::io::Result<()> { + if namespace == CHANNEL_MANAGER_PERSISTENCE_NAMESPACE && + sub_namespace == CHANNEL_MANAGER_PERSISTENCE_SUB_NAMESPACE && + key == CHANNEL_MANAGER_PERSISTENCE_KEY + { if let Some((error, message)) = self.manager_error { return Err(std::io::Error::new(error, message)) } } - if key == "network_graph" { + if namespace == NETWORK_GRAPH_PERSISTENCE_NAMESPACE && + sub_namespace == NETWORK_GRAPH_PERSISTENCE_SUB_NAMESPACE && + key == NETWORK_GRAPH_PERSISTENCE_KEY + { if let Some(sender) = &self.graph_persistence_notifier { match sender.send(()) { Ok(()) => {}, @@ -1001,13 +1015,24 @@ mod tests { } } - if key == "scorer" { + if namespace == SCORER_PERSISTENCE_NAMESPACE && + sub_namespace == SCORER_PERSISTENCE_SUB_NAMESPACE && + key == SCORER_PERSISTENCE_KEY + { if let Some((error, message)) = self.scorer_error { return Err(std::io::Error::new(error, message)) } } - self.filesystem_persister.persist(key, object) + self.kv_store.write(namespace, sub_namespace, key, buf) + } + + fn remove(&self, namespace: &str, sub_namespace: &str, key: &str, lazy: bool) -> lightning::io::Result<()> { + self.kv_store.remove(namespace, sub_namespace, key, lazy) + } + + fn list(&self, namespace: &str, sub_namespace: &str) -> lightning::io::Result> { + self.kv_store.list(namespace, sub_namespace) } } @@ -1157,10 +1182,10 @@ mod tests { let seed = [i as u8; 32]; let router = Arc::new(DefaultRouter::new(network_graph.clone(), logger.clone(), seed, scorer.clone(), ())); let chain_source = Arc::new(test_utils::TestChainSource::new(Network::Bitcoin)); - let persister = Arc::new(FilesystemPersister::new(format!("{}_persister_{}", &persist_dir, i))); + let kv_store = Arc::new(FilesystemStore::new(format!("{}_persister_{}", &persist_dir, i).into())); 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 chain_monitor = Arc::new(chainmonitor::ChainMonitor::new(Some(chain_source.clone()), tx_broadcaster.clone(), logger.clone(), fee_estimator.clone(), kv_store.clone())); let best_block = BestBlock::from_network(network); let params = ChainParameters { network, best_block }; let manager = Arc::new(ChannelManager::new(fee_estimator.clone(), chain_monitor.clone(), tx_broadcaster.clone(), router.clone(), logger.clone(), keys_manager.clone(), keys_manager.clone(), keys_manager.clone(), UserConfig::default(), params, genesis_block.header.time)); @@ -1172,7 +1197,7 @@ mod tests { onion_message_handler: IgnoringMessageHandler{}, custom_message_handler: IgnoringMessageHandler{} }; let peer_manager = Arc::new(PeerManager::new(msg_handler, 0, &seed, logger.clone(), keys_manager.clone())); - let node = Node { node: manager, p2p_gossip_sync, rapid_gossip_sync, peer_manager, chain_monitor, persister, tx_broadcaster, network_graph, logger, best_block, scorer }; + let node = Node { node: manager, p2p_gossip_sync, rapid_gossip_sync, peer_manager, chain_monitor, kv_store, tx_broadcaster, network_graph, logger, best_block, scorer }; nodes.push(node); } @@ -1267,7 +1292,7 @@ mod tests { let tx = open_channel!(nodes[0], nodes[1], 100000); // Initiate the background processors to watch each node. - let data_dir = nodes[0].persister.get_data_dir(); + let data_dir = nodes[0].kv_store.get_data_dir(); let persister = Arc::new(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].p2p_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone())); @@ -1332,7 +1357,7 @@ mod tests { // `ChainMonitor::rebroadcast_pending_claims` is called every `REBROADCAST_TIMER`, and // `PeerManager::timer_tick_occurred` every `PING_TIMER`. let (_, nodes) = create_nodes(1, "test_timer_tick_called"); - let data_dir = nodes[0].persister.get_data_dir(); + let data_dir = nodes[0].kv_store.get_data_dir(); let persister = Arc::new(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].no_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone())); @@ -1359,7 +1384,7 @@ mod tests { let (_, nodes) = create_nodes(2, "test_persist_error"); open_channel!(nodes[0], nodes[1], 100000); - let data_dir = nodes[0].persister.get_data_dir(); + let data_dir = nodes[0].kv_store.get_data_dir(); let persister = Arc::new(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].no_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone())); @@ -1379,7 +1404,7 @@ mod tests { let (_, nodes) = create_nodes(2, "test_persist_error_sync"); open_channel!(nodes[0], nodes[1], 100000); - let data_dir = nodes[0].persister.get_data_dir(); + let data_dir = nodes[0].kv_store.get_data_dir(); let persister = Arc::new(Persister::new(data_dir).with_manager_error(std::io::ErrorKind::Other, "test")); let bp_future = super::process_events_async( @@ -1405,7 +1430,7 @@ mod tests { fn test_network_graph_persist_error() { // Test that if we encounter an error during network graph persistence, an error gets returned. let (_, nodes) = create_nodes(2, "test_persist_network_graph_error"); - let data_dir = nodes[0].persister.get_data_dir(); + let data_dir = nodes[0].kv_store.get_data_dir(); let persister = Arc::new(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].p2p_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone())); @@ -1423,7 +1448,7 @@ mod tests { fn test_scorer_persist_error() { // Test that if we encounter an error during scorer persistence, an error gets returned. let (_, nodes) = create_nodes(2, "test_persist_scorer_error"); - let data_dir = nodes[0].persister.get_data_dir(); + let data_dir = nodes[0].kv_store.get_data_dir(); let persister = Arc::new(Persister::new(data_dir).with_scorer_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].no_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone())); @@ -1441,7 +1466,7 @@ mod tests { fn test_background_event_handling() { let (_, mut nodes) = create_nodes(2, "test_background_event_handling"); let channel_value = 100000; - let data_dir = nodes[0].persister.get_data_dir(); + let data_dir = nodes[0].kv_store.get_data_dir(); let persister = Arc::new(Persister::new(data_dir.clone())); // Set up a background event handler for FundingGenerationReady events. @@ -1514,7 +1539,7 @@ mod tests { #[test] fn test_scorer_persistence() { let (_, nodes) = create_nodes(2, "test_scorer_persistence"); - let data_dir = nodes[0].persister.get_data_dir(); + let data_dir = nodes[0].kv_store.get_data_dir(); let persister = Arc::new(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].no_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone())); @@ -1586,7 +1611,7 @@ mod tests { let (sender, receiver) = std::sync::mpsc::sync_channel(1); let (_, nodes) = create_nodes(2, "test_not_pruning_network_graph_until_graph_sync_completion"); - let data_dir = nodes[0].persister.get_data_dir(); + let data_dir = nodes[0].kv_store.get_data_dir(); let persister = Arc::new(Persister::new(data_dir).with_graph_persistence_notifier(sender)); let event_handler = |_: _| {}; @@ -1605,7 +1630,7 @@ mod tests { let (sender, receiver) = std::sync::mpsc::sync_channel(1); let (_, nodes) = create_nodes(2, "test_not_pruning_network_graph_until_graph_sync_completion_async"); - let data_dir = nodes[0].persister.get_data_dir(); + let data_dir = nodes[0].kv_store.get_data_dir(); let persister = Arc::new(Persister::new(data_dir).with_graph_persistence_notifier(sender)); let (exit_sender, exit_receiver) = tokio::sync::watch::channel(()); @@ -1745,7 +1770,7 @@ mod tests { }; let (_, nodes) = create_nodes(1, "test_payment_path_scoring"); - let data_dir = nodes[0].persister.get_data_dir(); + let data_dir = nodes[0].kv_store.get_data_dir(); let persister = Arc::new(Persister::new(data_dir)); let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].no_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone())); @@ -1778,7 +1803,7 @@ mod tests { }; let (_, nodes) = create_nodes(1, "test_payment_path_scoring_async"); - let data_dir = nodes[0].persister.get_data_dir(); + let data_dir = nodes[0].kv_store.get_data_dir(); let persister = Arc::new(Persister::new(data_dir)); let (exit_sender, exit_receiver) = tokio::sync::watch::channel(()); diff --git a/lightning-persister/Cargo.toml b/lightning-persister/Cargo.toml index 271f3b882..7ba422322 100644 --- a/lightning-persister/Cargo.toml +++ b/lightning-persister/Cargo.toml @@ -16,10 +16,8 @@ rustdoc-args = ["--cfg", "docsrs"] [dependencies] bitcoin = "0.29.0" lightning = { version = "0.0.116", path = "../lightning" } -libc = "0.2" [target.'cfg(windows)'.dependencies] -winapi = { version = "0.3", features = ["winbase"] } windows-sys = { version = "0.48.0", default-features = false, features = ["Win32_Storage_FileSystem", "Win32_Foundation"] } [target.'cfg(ldk_bench)'.dependencies] diff --git a/lightning-persister/src/lib.rs b/lightning-persister/src/lib.rs index 932e4f41a..ae258e137 100644 --- a/lightning-persister/src/lib.rs +++ b/lightning-persister/src/lib.rs @@ -16,341 +16,3 @@ mod utils; #[cfg(test)] mod test_utils; - -mod util; - -extern crate lightning; -extern crate bitcoin; -extern crate libc; - -use bitcoin::hash_types::{BlockHash, Txid}; -use bitcoin::hashes::hex::FromHex; -use lightning::chain::channelmonitor::ChannelMonitor; -use lightning::sign::{EntropySource, SignerProvider}; -use lightning::util::ser::{ReadableArgs, Writeable}; -use lightning::util::persist::KVStorePersister; -use std::fs; -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. -/// -/// Warning: this module does the best it can with calls to persist data, but it -/// can only guarantee that the data is passed to the drive. It is up to the -/// drive manufacturers to do the actual persistence properly, which they often -/// don't (especially on consumer-grade hardware). Therefore, it is up to the -/// user to validate their entire storage stack, to ensure the writes are -/// persistent. -/// Corollary: especially when dealing with larger amounts of money, it is best -/// practice to have multiple channel data backups and not rely only on one -/// FilesystemPersister. -pub struct FilesystemPersister { - path_to_channel_data: String, -} - -impl FilesystemPersister { - /// Initialize a new FilesystemPersister and set the path to the individual channels' - /// files. - pub fn new(path_to_channel_data: String) -> Self { - Self { - path_to_channel_data, - } - } - - /// Get the directory which was provided when this persister was initialized. - pub fn get_data_dir(&self) -> String { - self.path_to_channel_data.clone() - } - - /// Read `ChannelMonitor`s from disk. - pub fn read_channelmonitors ( - &self, entropy_source: ES, signer_provider: SP - ) -> std::io::Result::Signer>)>> - where - ES::Target: EntropySource + Sized, - SP::Target: SignerProvider + Sized - { - 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)? { - let file = file_option.unwrap(); - let owned_file_name = file.file_name(); - let filename = owned_file_name.to_str() - .ok_or_else(|| std::io::Error::new(std::io::ErrorKind::InvalidData, - "File name is not a valid utf8 string"))?; - if !filename.is_ascii() || filename.len() < 65 { - return Err(std::io::Error::new( - std::io::ErrorKind::InvalidData, - "Invalid ChannelMonitor file name", - )); - } - if filename.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 txid: Txid = Txid::from_hex(filename.split_at(64).0) - .map_err(|_| std::io::Error::new( - std::io::ErrorKind::InvalidData, - "Invalid tx ID in filename", - ))?; - - let index: u16 = filename.split_at(65).1.parse() - .map_err(|_| std::io::Error::new( - std::io::ErrorKind::InvalidData, - "Invalid tx index in filename", - ))?; - - let contents = fs::read(&file.path())?; - let mut buffer = Cursor::new(&contents); - match <(BlockHash, ChannelMonitor<::Signer>)>::read(&mut buffer, (&*entropy_source, &*signer_provider)) { - Ok((blockhash, channel_monitor)) => { - if channel_monitor.get_funding_txo().0.txid != txid || channel_monitor.get_funding_txo().0.index != index { - 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 KVStorePersister for FilesystemPersister { - fn persist(&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) - } -} - -#[cfg(test)] -mod tests { - extern crate lightning; - extern crate bitcoin; - use crate::FilesystemPersister; - use bitcoin::hashes::hex::FromHex; - use bitcoin::Txid; - use lightning::chain::ChannelMonitorUpdateStatus; - use lightning::chain::chainmonitor::Persist; - use lightning::chain::channelmonitor::CLOSED_CHANNEL_UPDATE_ID; - use lightning::chain::transaction::OutPoint; - use lightning::{check_closed_broadcast, check_closed_event, check_added_monitors}; - use lightning::events::{ClosureReason, MessageSendEventsProvider}; - use lightning::ln::functional_test_utils::*; - use lightning::util::test_utils; - use std::fs; - #[cfg(target_os = "windows")] - use { - lightning::get_event_msg, - lightning::ln::msgs::ChannelMessageHandler, - }; - - impl Drop for FilesystemPersister { - fn drop(&mut self) { - // We test for invalid directory names, so it's OK if directory removal - // fails. - match fs::remove_dir_all(&self.path_to_channel_data) { - Err(e) => println!("Failed to remove test persister directory: {}", e), - _ => {} - } - } - } - - #[test] - fn test_if_monitors_is_not_dir() { - let persister = FilesystemPersister::new("test_monitors_is_not_dir".to_string()); - - fs::create_dir_all(&persister.path_to_channel_data).unwrap(); - let mut path = std::path::PathBuf::from(&persister.path_to_channel_data); - path.push("monitors"); - fs::File::create(path).unwrap(); - - let chanmon_cfgs = create_chanmon_cfgs(1); - let mut node_cfgs = create_node_cfgs(1, &chanmon_cfgs); - let chain_mon_0 = test_utils::TestChainMonitor::new(Some(&chanmon_cfgs[0].chain_source), &chanmon_cfgs[0].tx_broadcaster, &chanmon_cfgs[0].logger, &chanmon_cfgs[0].fee_estimator, &persister, node_cfgs[0].keys_manager); - node_cfgs[0].chain_monitor = chain_mon_0; - let node_chanmgrs = create_node_chanmgrs(1, &node_cfgs, &[None]); - let nodes = create_network(1, &node_cfgs, &node_chanmgrs); - - // Check that read_channelmonitors() returns error if monitors/ is not a - // directory. - assert!(persister.read_channelmonitors(nodes[0].keys_manager, nodes[0].keys_manager).is_err()); - } - - // Integration-test the FilesystemPersister. Test relaying a few payments - // and check that the persisted data is updated the appropriate number of - // times. - #[test] - fn test_filesystem_persister() { - // Create the nodes, giving them FilesystemPersisters for data persisters. - let persister_0 = FilesystemPersister::new("test_filesystem_persister_0".to_string()); - let persister_1 = FilesystemPersister::new("test_filesystem_persister_1".to_string()); - let chanmon_cfgs = create_chanmon_cfgs(2); - let mut node_cfgs = create_node_cfgs(2, &chanmon_cfgs); - let chain_mon_0 = test_utils::TestChainMonitor::new(Some(&chanmon_cfgs[0].chain_source), &chanmon_cfgs[0].tx_broadcaster, &chanmon_cfgs[0].logger, &chanmon_cfgs[0].fee_estimator, &persister_0, node_cfgs[0].keys_manager); - let chain_mon_1 = test_utils::TestChainMonitor::new(Some(&chanmon_cfgs[1].chain_source), &chanmon_cfgs[1].tx_broadcaster, &chanmon_cfgs[1].logger, &chanmon_cfgs[1].fee_estimator, &persister_1, node_cfgs[1].keys_manager); - node_cfgs[0].chain_monitor = chain_mon_0; - node_cfgs[1].chain_monitor = chain_mon_1; - let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]); - let nodes = create_network(2, &node_cfgs, &node_chanmgrs); - - // Check that the persisted channel data is empty before any channels are - // open. - let mut persisted_chan_data_0 = persister_0.read_channelmonitors(nodes[0].keys_manager, 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, 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.read_channelmonitors(nodes[0].keys_manager, 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.read_channelmonitors(nodes[1].keys_manager, 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); - } - } - } - - // Create some initial channel and check that a channel was persisted. - let _ = create_announced_chan_between_nodes(&nodes, 0, 1); - 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); - check_persisted_data!(5); - 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_broadcasting_latest_txn(&nodes[0].node.list_channels()[0].channel_id, &nodes[1].node.get_our_node_id()).unwrap(); - check_closed_event!(nodes[0], 1, ClosureReason::HolderForceClosed, [nodes[1].node.get_our_node_id()], 100000); - 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); - - connect_block(&nodes[1], &create_dummy_block(nodes[0].best_block_hash(), 42, vec![node_txn[0].clone(), node_txn[0].clone()])); - check_closed_broadcast!(nodes[1], true); - check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed, [nodes[0].node.get_our_node_id()], 100000); - check_added_monitors!(nodes[1], 1); - - // Make sure everything is persisted as expected after close. - check_persisted_data!(CLOSED_CHANNEL_UPDATE_ID); - } - - // Test that if the persister's path to channel data is read-only, writing a - // monitor to it results in the persister returning a PermanentFailure. - // Windows ignores the read-only flag for folders, so this test is Unix-only. - #[cfg(not(target_os = "windows"))] - #[test] - fn test_readonly_dir_perm_failure() { - let persister = FilesystemPersister::new("test_readonly_dir_perm_failure".to_string()); - fs::create_dir_all(&persister.path_to_channel_data).unwrap(); - - // Set up a dummy channel and force close. This will produce a monitor - // that we can then use to test persistence. - let chanmon_cfgs = create_chanmon_cfgs(2); - let node_cfgs = create_node_cfgs(2, &chanmon_cfgs); - let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]); - let nodes = create_network(2, &node_cfgs, &node_chanmgrs); - let chan = create_announced_chan_between_nodes(&nodes, 0, 1); - nodes[1].node.force_close_broadcasting_latest_txn(&chan.2, &nodes[0].node.get_our_node_id()).unwrap(); - check_closed_event!(nodes[1], 1, ClosureReason::HolderForceClosed, [nodes[0].node.get_our_node_id()], 100000); - 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 - // channel update. - let path = &persister.path_to_channel_data; - let mut perms = fs::metadata(path).unwrap().permissions(); - perms.set_readonly(true); - fs::set_permissions(path, perms).unwrap(); - - let test_txo = OutPoint { - txid: Txid::from_hex("8984484a580b825b9972d7adb15050b3ab624ccd731946b3eeddb92f4e7ef6be").unwrap(), - index: 0 - }; - match persister.persist_new_channel(test_txo, &added_monitors[0].1, update_id.2) { - ChannelMonitorUpdateStatus::PermanentFailure => {}, - _ => panic!("unexpected result from persisting new channel") - } - - nodes[1].node.get_and_clear_pending_msg_events(); - added_monitors.clear(); - } - - // Test that if a persister's directory name is invalid, monitor persistence - // will fail. - #[cfg(target_os = "windows")] - #[test] - fn test_fail_on_open() { - // Set up a dummy channel and force close. This will produce a monitor - // that we can then use to test persistence. - let chanmon_cfgs = create_chanmon_cfgs(2); - let mut node_cfgs = create_node_cfgs(2, &chanmon_cfgs); - let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]); - let nodes = create_network(2, &node_cfgs, &node_chanmgrs); - let chan = create_announced_chan_between_nodes(&nodes, 0, 1); - nodes[1].node.force_close_broadcasting_latest_txn(&chan.2, &nodes[0].node.get_our_node_id()).unwrap(); - check_closed_event!(nodes[1], 1, ClosureReason::HolderForceClosed, [nodes[0].node.get_our_node_id()], 100000); - 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 - // don't seem to be invalid filename characters on Unix that Rust doesn't - // handle, hence why the test is Windows-only. - let persister = FilesystemPersister::new(":<>/".to_string()); - - let test_txo = OutPoint { - txid: Txid::from_hex("8984484a580b825b9972d7adb15050b3ab624ccd731946b3eeddb92f4e7ef6be").unwrap(), - index: 0 - }; - match persister.persist_new_channel(test_txo, &added_monitors[0].1, update_id.2) { - ChannelMonitorUpdateStatus::PermanentFailure => {}, - _ => panic!("unexpected result from persisting new channel") - } - - nodes[1].node.get_and_clear_pending_msg_events(); - added_monitors.clear(); - } -} - -#[cfg(ldk_bench)] -/// Benches -pub mod bench { - use criterion::Criterion; - - /// Bench! - pub fn bench_sends(bench: &mut Criterion) { - 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, "bench_filesystem_persisted_sends", persister_a, persister_b); - } -} diff --git a/lightning-persister/src/util.rs b/lightning-persister/src/util.rs deleted file mode 100644 index 20c4a8151..000000000 --- a/lightning-persister/src/util.rs +++ /dev/null @@ -1,188 +0,0 @@ -#[cfg(target_os = "windows")] -extern crate winapi; - -use std::fs; -use std::path::PathBuf; -use std::io::BufWriter; - -#[cfg(not(target_os = "windows"))] -use std::os::unix::io::AsRawFd; - -use lightning::util::ser::Writeable; - -#[cfg(target_os = "windows")] -use { - std::ffi::OsStr, - std::os::windows::ffi::OsStrExt -}; - -#[cfg(target_os = "windows")] -macro_rules! call { - ($e: expr) => ( - if $e != 0 { - return Ok(()) - } else { - return Err(std::io::Error::last_os_error()) - } - ) -} - -#[cfg(target_os = "windows")] -fn path_to_windows_str>(path: T) -> Vec { - path.as_ref().encode_wide().chain(Some(0)).collect() -} - -#[allow(bare_trait_objects)] -pub(crate) fn write_to_file(dest_file: PathBuf, data: &W) -> std::io::Result<()> { - let mut tmp_file = dest_file.clone(); - tmp_file.set_extension("tmp"); - - let parent_directory = dest_file.parent().unwrap(); - fs::create_dir_all(parent_directory)?; - // Do a crazy dance with lots of fsync()s to be overly cautious here... - // We never want to end up in a state where we've lost the old data, or end up using the - // old data on power loss after we've returned. - // The way to atomically write a file on Unix platforms is: - // open(tmpname), write(tmpfile), fsync(tmpfile), close(tmpfile), rename(), fsync(dir) - { - // Note that going by rust-lang/rust@d602a6b, on MacOS it is only safe to use - // rust stdlib 1.36 or higher. - let mut buf = BufWriter::new(fs::File::create(&tmp_file)?); - data.write(&mut buf)?; - buf.into_inner()?.sync_all()?; - } - // Fsync the parent directory on Unix. - #[cfg(not(target_os = "windows"))] - { - fs::rename(&tmp_file, &dest_file)?; - let dir_file = fs::OpenOptions::new().read(true).open(parent_directory)?; - unsafe { libc::fsync(dir_file.as_raw_fd()); } - } - #[cfg(target_os = "windows")] - { - if dest_file.exists() { - unsafe {winapi::um::winbase::ReplaceFileW( - path_to_windows_str(dest_file).as_ptr(), path_to_windows_str(tmp_file).as_ptr(), std::ptr::null(), - winapi::um::winbase::REPLACEFILE_IGNORE_MERGE_ERRORS, - std::ptr::null_mut() as *mut winapi::ctypes::c_void, - std::ptr::null_mut() as *mut winapi::ctypes::c_void - )}; - } else { - call!(unsafe {winapi::um::winbase::MoveFileExW( - path_to_windows_str(tmp_file).as_ptr(), path_to_windows_str(dest_file).as_ptr(), - winapi::um::winbase::MOVEFILE_WRITE_THROUGH | winapi::um::winbase::MOVEFILE_REPLACE_EXISTING - )}); - } - } - Ok(()) -} - -#[cfg(test)] -mod tests { - use lightning::util::ser::{Writer, Writeable}; - - use super::{write_to_file}; - use std::fs; - use std::io; - use std::path::PathBuf; - - struct TestWriteable{} - impl Writeable for TestWriteable { - fn write(&self, writer: &mut W) -> Result<(), std::io::Error> { - writer.write_all(&[42; 1]) - } - } - - // Test that if the persister's path to channel data is read-only, writing - // data to it fails. Windows ignores the read-only flag for folders, so this - // test is Unix-only. - #[cfg(not(target_os = "windows"))] - #[test] - fn test_readonly_dir() { - let test_writeable = TestWriteable{}; - let filename = "test_readonly_dir_persister_filename".to_string(); - let path = "test_readonly_dir_persister_dir"; - fs::create_dir_all(path).unwrap(); - let mut perms = fs::metadata(path).unwrap().permissions(); - perms.set_readonly(true); - fs::set_permissions(path, perms).unwrap(); - let mut dest_file = PathBuf::from(path); - dest_file.push(filename); - match write_to_file(dest_file, &test_writeable) { - Err(e) => assert_eq!(e.kind(), io::ErrorKind::PermissionDenied), - _ => panic!("Unexpected error message") - } - } - - // Test failure to rename in the process of atomically creating a channel - // monitor's file. We induce this failure by making the `tmp` file a - // directory. - // Explanation: given "from" = the file being renamed, "to" = the destination - // file that already exists: Unix should fail because if "from" is a file, - // then "to" is also required to be a file. - // TODO: ideally try to make this work on Windows again - #[cfg(not(target_os = "windows"))] - #[test] - fn test_rename_failure() { - let test_writeable = TestWriteable{}; - let filename = "test_rename_failure_filename"; - let path = "test_rename_failure_dir"; - let mut dest_file = PathBuf::from(path); - dest_file.push(filename); - // Create the channel data file and make it a directory. - fs::create_dir_all(dest_file.clone()).unwrap(); - match write_to_file(dest_file, &test_writeable) { - Err(e) => assert_eq!(e.raw_os_error(), Some(libc::EISDIR)), - _ => panic!("Unexpected Ok(())") - } - fs::remove_dir_all(path).unwrap(); - } - - #[test] - fn test_diskwriteable_failure() { - struct FailingWriteable {} - impl Writeable for FailingWriteable { - fn write(&self, _writer: &mut W) -> Result<(), std::io::Error> { - Err(std::io::Error::new(std::io::ErrorKind::Other, "expected failure")) - } - } - - let filename = "test_diskwriteable_failure"; - let path = "test_diskwriteable_failure_dir"; - let test_writeable = FailingWriteable{}; - let mut dest_file = PathBuf::from(path); - dest_file.push(filename); - match write_to_file(dest_file, &test_writeable) { - Err(e) => { - assert_eq!(e.kind(), std::io::ErrorKind::Other); - assert_eq!(e.get_ref().unwrap().to_string(), "expected failure"); - }, - _ => panic!("unexpected result") - } - fs::remove_dir_all(path).unwrap(); - } - - // Test failure to create the temporary file in the persistence process. - // We induce this failure by having the temp file already exist and be a - // directory. - #[test] - fn test_tmp_file_creation_failure() { - let test_writeable = TestWriteable{}; - let filename = "test_tmp_file_creation_failure_filename".to_string(); - let path = "test_tmp_file_creation_failure_dir"; - let mut dest_file = PathBuf::from(path); - dest_file.push(filename); - let mut tmp_file = dest_file.clone(); - tmp_file.set_extension("tmp"); - fs::create_dir_all(tmp_file).unwrap(); - match write_to_file(dest_file, &test_writeable) { - Err(e) => { - #[cfg(not(target_os = "windows"))] - assert_eq!(e.raw_os_error(), Some(libc::EISDIR)); - #[cfg(target_os = "windows")] - assert_eq!(e.kind(), io::ErrorKind::PermissionDenied); - } - _ => panic!("Unexpected error message") - } - } -} diff --git a/lightning/src/util/persist.rs b/lightning/src/util/persist.rs index 5b122b7a5..ca0605c95 100644 --- a/lightning/src/util/persist.rs +++ b/lightning/src/util/persist.rs @@ -114,15 +114,6 @@ pub trait KVStore { fn list(&self, namespace: &str, sub_namespace: &str) -> io::Result>; } -/// Trait for a key-value store for persisting some writeable object at some key -/// Implementing `KVStorePersister` provides auto-implementations for [`Persister`] -/// and [`Persist`] traits. It uses "manager", "network_graph", -/// and "monitors/{funding_txo_id}_{funding_txo_index}" for keys. -pub trait KVStorePersister { - /// Persist the given writeable using the provided key - fn persist(&self, key: &str, object: &W) -> io::Result<()>; -} - /// Trait that handles persisting a [`ChannelManager`], [`NetworkGraph`], and [`WriteableScore`] to disk. pub trait Persister<'a, M: Deref, T: Deref, ES: Deref, NS: Deref, SP: Deref, F: Deref, R: Deref, L: Deref, S: WriteableScore<'a>> where M::Target: 'static + chain::Watch<::Signer>, @@ -144,7 +135,8 @@ pub trait Persister<'a, M: Deref, T: Deref, ES: Deref, NS: Deref, SP: Deref, F: fn persist_scorer(&self, scorer: &S) -> Result<(), io::Error>; } -impl<'a, A: KVStorePersister, M: Deref, T: Deref, ES: Deref, NS: Deref, SP: Deref, F: Deref, R: Deref, L: Deref, S: WriteableScore<'a>> Persister<'a, M, T, ES, NS, SP, F, R, L, S> for A + +impl<'a, A: KVStore, M: Deref, T: Deref, ES: Deref, NS: Deref, SP: Deref, F: Deref, R: Deref, L: Deref, S: WriteableScore<'a>> Persister<'a, M, T, ES, NS, SP, F, R, L, S> for A where M::Target: 'static + chain::Watch<::Signer>, T::Target: 'static + BroadcasterInterface, ES::Target: 'static + EntropySource, @@ -154,39 +146,56 @@ impl<'a, A: KVStorePersister, M: Deref, T: Deref, ES: Deref, NS: Deref, SP: Dere R::Target: 'static + Router, L::Target: 'static + Logger, { - /// Persist the given ['ChannelManager'] to disk with the name "manager", returning an error if persistence failed. + /// Persist the given [`ChannelManager`] to disk, returning an error if persistence failed. fn persist_manager(&self, channel_manager: &ChannelManager) -> Result<(), io::Error> { - self.persist("manager", channel_manager) + self.write(CHANNEL_MANAGER_PERSISTENCE_NAMESPACE, + CHANNEL_MANAGER_PERSISTENCE_SUB_NAMESPACE, + CHANNEL_MANAGER_PERSISTENCE_KEY, + &channel_manager.encode()) } - /// Persist the given [`NetworkGraph`] to disk with the name "network_graph", returning an error if persistence failed. + /// Persist the given [`NetworkGraph`] to disk, returning an error if persistence failed. fn persist_graph(&self, network_graph: &NetworkGraph) -> Result<(), io::Error> { - self.persist("network_graph", network_graph) + self.write(NETWORK_GRAPH_PERSISTENCE_NAMESPACE, + NETWORK_GRAPH_PERSISTENCE_SUB_NAMESPACE, + NETWORK_GRAPH_PERSISTENCE_KEY, + &network_graph.encode()) } - /// Persist the given [`WriteableScore`] to disk with name "scorer", returning an error if persistence failed. + /// Persist the given [`WriteableScore`] to disk, returning an error if persistence failed. fn persist_scorer(&self, scorer: &S) -> Result<(), io::Error> { - self.persist("scorer", &scorer) + self.write(SCORER_PERSISTENCE_NAMESPACE, + SCORER_PERSISTENCE_SUB_NAMESPACE, + SCORER_PERSISTENCE_KEY, + &scorer.encode()) } } -impl Persist for K { +impl Persist for K { // TODO: We really need a way for the persister to inform the user that its time to crash/shut // down once these start returning failure. // A PermanentFailure implies we should probably just shut down the node since we're // force-closing channels without even broadcasting! fn persist_new_channel(&self, funding_txo: OutPoint, monitor: &ChannelMonitor, _update_id: MonitorUpdateId) -> chain::ChannelMonitorUpdateStatus { - let key = format!("monitors/{}_{}", funding_txo.txid.to_hex(), funding_txo.index); - match self.persist(&key, monitor) { + let key = format!("{}_{}", funding_txo.txid.to_hex(), funding_txo.index); + match self.write( + CHANNEL_MONITOR_PERSISTENCE_NAMESPACE, + CHANNEL_MONITOR_PERSISTENCE_SUB_NAMESPACE, + &key, &monitor.encode()) + { Ok(()) => chain::ChannelMonitorUpdateStatus::Completed, Err(_) => chain::ChannelMonitorUpdateStatus::PermanentFailure, } } fn update_persisted_channel(&self, funding_txo: OutPoint, _update: Option<&ChannelMonitorUpdate>, monitor: &ChannelMonitor, _update_id: MonitorUpdateId) -> chain::ChannelMonitorUpdateStatus { - let key = format!("monitors/{}_{}", funding_txo.txid.to_hex(), funding_txo.index); - match self.persist(&key, monitor) { + let key = format!("{}_{}", funding_txo.txid.to_hex(), funding_txo.index); + match self.write( + CHANNEL_MONITOR_PERSISTENCE_NAMESPACE, + CHANNEL_MONITOR_PERSISTENCE_SUB_NAMESPACE, + &key, &monitor.encode()) + { Ok(()) => chain::ChannelMonitorUpdateStatus::Completed, Err(_) => chain::ChannelMonitorUpdateStatus::PermanentFailure, } -- 2.39.5