X-Git-Url: http://git.bitcoin.ninja/index.cgi?p=ldk-sample;a=blobdiff_plain;f=src%2Fdisk.rs;h=7be070c962f4d73e3c9445c8a5a8730fedd71fe3;hp=b641ebb053167b01c6f397c1ef40d0decd98ad61;hb=e31773bd74197082c327fdeb878f28664ee65e21;hpb=7a39a4df612ae282fcf2329be8fc1bf8da8a84db

diff --git a/src/disk.rs b/src/disk.rs
index b641ebb..7be070c 100644
--- a/src/disk.rs
+++ b/src/disk.rs
@@ -3,6 +3,7 @@ use bitcoin::secp256k1::key::PublicKey;
 use bitcoin::BlockHash;
 use chrono::Utc;
 use lightning::routing::network_graph::NetworkGraph;
+use lightning::routing::scorer::Scorer;
 use lightning::util::logger::{Logger, Record};
 use lightning::util::ser::{Readable, Writeable, Writer};
 use std::collections::HashMap;
@@ -92,3 +93,25 @@ pub(crate) fn read_network(path: &Path, genesis_hash: BlockHash) -> NetworkGraph
 	}
 	NetworkGraph::new(genesis_hash)
 }
+
+pub(crate) fn persist_scorer(path: &Path, scorer: &Scorer) -> std::io::Result<()> {
+	let mut tmp_path = path.to_path_buf().into_os_string();
+	tmp_path.push(".tmp");
+	let file = fs::OpenOptions::new().write(true).create(true).open(&tmp_path)?;
+	let write_res = scorer.write(&mut BufWriter::new(file));
+	if let Err(e) = write_res.and_then(|_| fs::rename(&tmp_path, path)) {
+		let _ = fs::remove_file(&tmp_path);
+		Err(e)
+	} else {
+		Ok(())
+	}
+}
+
+pub(crate) fn read_scorer(path: &Path) -> Scorer {
+	if let Ok(file) = File::open(path) {
+		if let Ok(scorer) = Scorer::read(&mut BufReader::new(file)) {
+			return scorer;
+		}
+	}
+	Scorer::default()
+}