Periodical external pathfinding scores merge by joostjager · Pull Request #449 · lightningdevkit/ldk-node

joostjager · 2025-01-29T11:14:52Z

Fixes #313

Depends on lightningdevkit/rust-lightning#3562

Export functionality in #458

src/config.rs

Cargo.toml

tnull

Thanks! Did a first pass, already looks pretty good!

Cargo.toml

src/builder.rs

src/config.rs

src/lib.rs

src/builder.rs

src/lib.rs

src/scoring.rs

src/lib.rs

src/config.rs

src/builder.rs

src/io/utils.rs

src/scoring.rs

src/lib.rs

src/builder.rs

src/lib.rs

src/scoring.rs

tnull · 2025-02-06T12:46:10Z

src/scoring.rs

+async fn sync_external_scores(
+	logger: &Logger, scorer: &Mutex<CombinedScorer<Arc<Graph>, Arc<Logger>>>,
+	node_metrics: &RwLock<NodeMetrics>, kv_store: Arc<DynStore>, url: &String,
+) -> () {


Should this return a Result?

I don't think so - this function cannot fail?

tnull · 2025-02-06T12:47:25Z

src/scoring.rs

+			match body {
+				Err(e) => {
+					log_error!(logger, "Failed to read external scores update: {}", e);
+					return;


Let's avoid these explicit returns if possible.

Indeed, not necessary. I wanted to exit the parent function with these returns, but just letting it run would have the same result.

In this current revision I now have a few real ones, after unwrapping the matches a bit.

joostjager · 2025-02-07T10:56:24Z

Comments addressed. Now need to decide in lightningdevkit/rust-lightning#3562 how to read the combined scorer from disk (with local and merged data), and apply that in this PR.

src/builder.rs

src/scoring.rs

benthecarman · 2025-08-13T16:07:14Z

src/scoring.rs

+) -> () {
+	let response = tokio::time::timeout(
+		Duration::from_secs(EXTERNAL_PATHFINDING_SCORES_SYNC_TIMEOUT_SECS),
+		reqwest::get(url),


should create a reqwest client instead of doing reqwest::get, otherwise it needs to redo TLS and everything each time

should create a reqwest client instead of doing reqwest::get, otherwise it needs to redo TLS and everything each time

Right, but establishing a new connection once an hour is reasonable? And probably preferable compared to keep a connection open if we only use it once an hour?

ah yeah true

joostjager · 2025-09-10T12:30:03Z

This has been parked, but I suppose with the new develop branch we can merge this after a rebase.

tnull · 2025-09-10T12:40:34Z

This has been parked, but I suppose with the new develop branch we can merge this after a rebase.

Yes, please rebase!

tnull · 2025-10-07T09:00:10Z

Gentle ping @joostjager

joostjager · 2025-10-16T12:30:33Z

Rebased

tnull

Two minor comments, otherwise should look good.

src/scoring.rs

tnull · 2025-10-17T06:58:38Z

@joostjager Feel free to squash the fixup. More detailed/verbose commit messages would also be appreciated.

…nal http source

Save external pathfinding scores in a cache so that they will be available immediately after a node restart. Otherwise there might be a time window where new scores need to be downloaded still and the node operates on local data only.

joostjager · 2025-10-23T17:21:14Z

Squashed without changes.

joostjager mentioned this pull request Jan 30, 2025

Merge probabilistic scores from external source lightningdevkit/rust-lightning#3562

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joostjager changed the title ~~Import scores~~ Periodical external score merge Jan 30, 2025

joostjager force-pushed the import-scores branch 2 times, most recently from e0b7070 to 58acc12 Compare January 30, 2025 13:31

joostjager commented Jan 30, 2025

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joostjager marked this pull request as ready for review January 31, 2025 08:53

joostjager commented Jan 31, 2025

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joostjager mentioned this pull request Feb 5, 2025

Add pathfinding scores export method #458

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joostjager changed the title ~~Periodical external score merge~~ Periodical external pathfinding scores merge Feb 5, 2025

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joostjager force-pushed the import-scores branch from d6bb7cf to 5ae6a35 Compare February 11, 2025 07:42

tnull modified the milestones: 0.6, 0.7 Jun 9, 2025

benthecarman reviewed Aug 13, 2025

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remove unnecessary arc clone

94cc2dc

joostjager force-pushed the import-scores branch from 5ae6a35 to 19bf276 Compare October 16, 2025 11:21

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joostjager force-pushed the import-scores branch from 0dfafb6 to 961e67f Compare October 16, 2025 12:56

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joostjager added 2 commits October 23, 2025 19:20

add functionality to periodically update routing scores from an exter…

49502cf

…nal http source

cache external pathfinding scores

52705d3

Save external pathfinding scores in a cache so that they will be available immediately after a node restart. Otherwise there might be a time window where new scores need to be downloaded still and the node operates on local data only.

joostjager force-pushed the import-scores branch from 961e67f to 52705d3 Compare October 23, 2025 17:21

joostjager merged commit 9d71d3a into lightningdevkit:main Oct 23, 2025
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github-project-automation bot moved this to Done in Weekly Goals Oct 23, 2025

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joostjager commented Jan 29, 2025 •

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