From: Matt Corallo <649246+TheBlueMatt@users.noreply.github.com>
Date: Tue, 26 Sep 2023 20:07:52 +0000 (+0000)
Subject: Merge pull request #2417 from tnull/2023-07-max-total-fee
X-Git-Tag: v0.0.117-alpha2~5
X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=commitdiff_plain;h=1ac53ed02bf26520d3b1a2c3c0e90c8691c83099;p=rust-lightning

Merge pull request #2417 from tnull/2023-07-max-total-fee

Add config option to set maximum total routing fee
---

1ac53ed02bf26520d3b1a2c3c0e90c8691c83099
diff --cc lightning/src/routing/router.rs
index 6e5c00e76,c680d57a6..c20ce2e97
--- a/lightning/src/routing/router.rs
+++ b/lightning/src/routing/router.rs
@@@ -5239,11 -5269,23 +5270,23 @@@ mod tests 
  			} else { panic!(); }
  		}
  
+ 		{
+ 			// Attempt to route while setting max_total_routing_fee_msat to 149_999 results in a failure.
+ 			let route_params = RouteParameters { payment_params: payment_params.clone(), final_value_msat: 200_000,
+ 				max_total_routing_fee_msat: Some(149_999) };
+ 			if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(
+ 				&our_id, &route_params, &network_graph.read_only(), None, Arc::clone(&logger),
+ 				&scorer, &(), &random_seed_bytes) {
+ 					assert_eq!(err, "Failed to find a sufficient route to the given destination");
+ 			} else { panic!(); }
+ 		}
+ 
  		{
  			// Now, attempt to route 200 sats (exact amount we can route).
- 			let route_params = RouteParameters::from_payment_params_and_value(payment_params, 200_000);
+ 			let route_params = RouteParameters { payment_params: payment_params.clone(), final_value_msat: 200_000,
+ 				max_total_routing_fee_msat: Some(150_000) };
  			let route = get_route(&our_id, &route_params, &network_graph.read_only(), None,
 -				Arc::clone(&logger), &scorer, &(), &random_seed_bytes).unwrap();
 +				Arc::clone(&logger), &scorer, &Default::default(), &random_seed_bytes).unwrap();
  			assert_eq!(route.paths.len(), 2);
  
  			let mut total_amount_paid_msat = 0;