2 use bitcoin::secp256k1::key::PublicKey;
3 use bitcoin::BlockHash;
5 use lightning::routing::network_graph::NetworkGraph;
6 use lightning::routing::scorer::Scorer;
7 use lightning::util::logger::{Logger, Record};
8 use lightning::util::ser::{Readable, Writeable, Writer};
9 use std::collections::HashMap;
12 use std::io::{BufRead, BufReader, BufWriter};
13 use std::net::SocketAddr;
16 pub(crate) struct FilesystemLogger {
19 impl FilesystemLogger {
20 pub(crate) fn new(data_dir: String) -> Self {
21 let logs_path = format!("{}/logs", data_dir);
22 fs::create_dir_all(logs_path.clone()).unwrap();
23 Self { data_dir: logs_path }
26 impl Logger for FilesystemLogger {
27 fn log(&self, record: &Record) {
28 let raw_log = record.args.to_string();
30 "{} {:<5} [{}:{}] {}\n",
31 // Note that a "real" lightning node almost certainly does *not* want subsecond
32 // precision for message-receipt information as it makes log entries a target for
33 // deanonymization attacks. For testing, however, its quite useful.
34 Utc::now().format("%Y-%m-%d %H:%M:%S%.3f"),
35 record.level.to_string(),
40 let logs_file_path = format!("{}/logs.txt", self.data_dir.clone());
41 fs::OpenOptions::new()
46 .write_all(log.as_bytes())
50 pub(crate) fn persist_channel_peer(path: &Path, peer_info: &str) -> std::io::Result<()> {
51 let mut file = fs::OpenOptions::new().create(true).append(true).open(path)?;
52 file.write_all(format!("{}\n", peer_info).as_bytes())
55 pub(crate) fn read_channel_peer_data(
57 ) -> Result<HashMap<PublicKey, SocketAddr>, std::io::Error> {
58 let mut peer_data = HashMap::new();
59 if !Path::new(&path).exists() {
60 return Ok(HashMap::new());
62 let file = File::open(path)?;
63 let reader = BufReader::new(file);
64 for line in reader.lines() {
65 match cli::parse_peer_info(line.unwrap()) {
66 Ok((pubkey, socket_addr)) => {
67 peer_data.insert(pubkey, socket_addr);
69 Err(e) => return Err(e),
75 pub(crate) fn persist_network(path: &Path, network_graph: &NetworkGraph) -> std::io::Result<()> {
76 let mut tmp_path = path.to_path_buf().into_os_string();
77 tmp_path.push(".tmp");
78 let file = fs::OpenOptions::new().write(true).create(true).open(&tmp_path)?;
79 let write_res = network_graph.write(&mut BufWriter::new(file));
80 if let Err(e) = write_res.and_then(|_| fs::rename(&tmp_path, path)) {
81 let _ = fs::remove_file(&tmp_path);
88 pub(crate) fn read_network(path: &Path, genesis_hash: BlockHash) -> NetworkGraph {
89 if let Ok(file) = File::open(path) {
90 if let Ok(graph) = NetworkGraph::read(&mut BufReader::new(file)) {
94 NetworkGraph::new(genesis_hash)
97 pub(crate) fn persist_scorer(path: &Path, scorer: &Scorer) -> std::io::Result<()> {
98 let mut tmp_path = path.to_path_buf().into_os_string();
99 tmp_path.push(".tmp");
100 let file = fs::OpenOptions::new().write(true).create(true).open(&tmp_path)?;
101 let write_res = scorer.write(&mut BufWriter::new(file));
102 if let Err(e) = write_res.and_then(|_| fs::rename(&tmp_path, path)) {
103 let _ = fs::remove_file(&tmp_path);
110 pub(crate) fn read_scorer(path: &Path) -> Scorer {
111 if let Ok(file) = File::open(path) {
112 if let Ok(scorer) = Scorer::read(&mut BufReader::new(file)) {