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Merge pull request #5832 from guggero/node-feature-log

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channeldb: fix graph cache feature handling
This commit is contained in:
Oliver Gugger 2021-10-08 10:02:44 +02:00 • committed by GitHub
commit dd3719d5de
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2 changed files with 10 additions and 5 deletions
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3
channeldb/graph.go
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@ -376,7 +376,8 @@ func (c *ChannelGraph) ForEachNodeChannel(node route.Vertex,
return c.graphCache.ForEachChannel(node, cb)
}
// FetchNodeFeatures returns the features of a given node.
// FetchNodeFeatures returns the features of a given node. If no features are
// known for the node, an empty feature vector is returned.
func (c *ChannelGraph) FetchNodeFeatures(
node route.Vertex) (*lnwire.FeatureVector, error) {

12
channeldb/graph_cache.go
View file

@ -415,9 +415,12 @@ func (c *GraphCache) ForEachChannel(node route.Vertex,
features, ok := c.nodeFeatures[node]
if !ok {
log.Warnf("Node %v has no features defined, falling back to "+
"default feature vector for path finding", node)
// If the features were set to nil explicitly, that's fine here.
// The router will overwrite the features of the destination
// node with those found in the invoice if necessary. But if we
// didn't yet get a node announcement we want to mimic the
// behavior of the old DB based code that would always set an
// empty feature vector instead of leaving it nil.
features = lnwire.EmptyFeatureVector()
}
@ -444,7 +447,8 @@ func (c *GraphCache) ForEachChannel(node route.Vertex,
return nil
}
// GetFeatures returns the features of the node with the given ID.
// GetFeatures returns the features of the node with the given ID. If no
// features are known for the node, an empty feature vector is returned.
func (c *GraphCache) GetFeatures(node route.Vertex) *lnwire.FeatureVector {
c.mtx.RLock()
defer c.mtx.RUnlock()