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routing: cap number of yen's algorithm iterations at 100

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This commit makes a precautionary change in order to ensure that the
upper bound on the number of iteration’s within our version of Yen’s
algorithm is fixed.
This commit is contained in:
Olaoluwa Osuntokun 2017-08-15 19:56:28 -07:00
parent 09521b9c2a
commit 5ef077e5c8
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1 changed files with 3 additions and 1 deletions
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4
routing/pathfind.go
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@ -536,7 +536,7 @@ func findPaths(graph *channeldb.ChannelGraph, source *channeldb.LightningNode,
// While we still have candidate paths to explore we'll keep exploring
// the sub-graphs created to find the next k-th shortest path.
for k := 1; k == 1 || candidatePaths.Len() != 0; k++ {
for k := 1; k < 100; k++ {
prevShortest := shortestPaths[k-1]
// We'll examine each edge in the previous iteration's shortest
@ -605,6 +605,8 @@ func findPaths(graph *channeldb.ChannelGraph, source *channeldb.LightningNode,
newPath.hops = append(newPath.hops, rootPath...)
newPath.hops = append(newPath.hops, spurPath...)
// TODO(roasbeef): add and consult path finger print
// We'll now add this newPath to the heap of candidate
// shortest paths.
heap.Push(&candidatePaths, newPath)