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create_routes_for_payment: fix 'we atomically loop'

Before this commit, partial results were yielded before we had
examined the whole split configuration.

I think the correct behaviour is to create all the routes for the
current configuration, then to yield them. If there is an exception,
we should try the next one.
This commit is contained in:
ThomasV
2022-09-20 12:50:33 +02:00
parent 5e77886b98
commit ead886781a

View File

@@ -1736,12 +1736,12 @@ class LNWallet(LNWorker):
exclude_single_part_payments=True, exclude_single_part_payments=True,
) )
# We atomically loop through a split configuration. If there was # We atomically loop through a split configuration. If there was
# a failure to find a path for a single part, we give back control # a failure to find a path for a single part, we try the next configuration.
# after exhausting the split configuration.
yielded_from_split_configuration = False
self.logger.info(f'suggest_split {amount_msat} returned {len(split_configurations)} configurations') self.logger.info(f'suggest_split {amount_msat} returned {len(split_configurations)} configurations')
for sc in split_configurations: for sc in split_configurations:
self.logger.info(f"trying split configuration: {list(sc.config.values())} rating: {sc.rating}") self.logger.info(f"trying split configuration: {list(sc.config.values())} rating: {sc.rating}")
sc_routes = []
sc_success = True
for (chan_id, _), part_amounts_msat in sc.config.items(): for (chan_id, _), part_amounts_msat in sc.config.items():
for part_amount_msat in part_amounts_msat: for part_amount_msat in part_amounts_msat:
channel = self.channels[chan_id] channel = self.channels[chan_id]
@@ -1758,12 +1758,16 @@ class LNWallet(LNWorker):
full_path=None full_path=None
) )
) )
yield route, part_amount_msat, final_total_msat, part_amount_msat, min_cltv_expiry, payment_secret, fwd_trampoline_onion, None sc_routes.append((route, part_amount_msat, final_total_msat, part_amount_msat, min_cltv_expiry, payment_secret, fwd_trampoline_onion, None))
yielded_from_split_configuration = True
except NoPathFound: except NoPathFound:
continue sc_success = False
if yielded_from_split_configuration: break
if sc_success:
for r in sc_routes:
yield r
return return
else:
continue
raise NoPathFound() raise NoPathFound()
@profiler @profiler