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graph/db: convert ChanUpdatesInHorizon to use iterators

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In this commit, we refactor the ChanUpdatesInHorizon method to return
an iterator instead of a slice. This change significantly reduces
memory usage when dealing with large result sets by allowing callers to
process items incrementally rather than loading everything into memory
at once.
This commit is contained in:
Olaoluwa Osuntokun
2025-08-04 17:16:21 -07:00
parent 1d6d54e5db
commit 069888b51a
7 changed files with 254 additions and 86 deletions
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4
graph/builder.go
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@@ -593,13 +593,13 @@ func (b *Builder) pruneZombieChans() error {
startTime := time.Unix(0, 0)
endTime := time.Now().Add(-1 * chanExpiry)
oldEdges, err := b.cfg.Graph.ChanUpdatesInHorizon(startTime, endTime)
oldEdgesIter, err := b.cfg.Graph.ChanUpdatesInHorizon(startTime, endTime)
if err != nil {
return fmt.Errorf("unable to fetch expired channel updates "+
"chans: %v", err)
}
for _, u := range oldEdges {
for u := range oldEdgesIter {
err = filterPruneChans(u.Info, u.Policy1, u.Policy2)
if err != nil {
return fmt.Errorf("error filtering channels to "+