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autopilot: move determining chanSize from heuristic to agent

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Since we want to combine scores from multiple heuristics, things get
complicated if the heuristics report their own individual channel sizes.
Therefore we change the NodeScores interface slightly, letting the agent
specify the wanted channel size, and let the heuristic score the nodes
accordingly.
This commit is contained in:
Johan T. Halseth
2018-12-19 14:54:53 +01:00
parent d5f3714f86
commit cfd237bf1f
4 changed files with 27 additions and 32 deletions
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12
autopilot/interface.go
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@@ -111,11 +111,11 @@ type AttachmentDirective struct {
// the interface is to allow an auto-pilot agent to decide if it needs more
// channels, and if so, which exact channels should be opened.
type AttachmentHeuristic interface {
// NodeScores is a method that given the current channel graph, current
// set of local channels and funds available, scores the given nodes
// according to the preference of opening a channel with them. The
// returned channel candidates maps the NodeID to an attachemnt
// directive containing a score and a channel size.
// NodeScores is a method that given the current channel graph and
// current set of local channels, scores the given nodes according to
// the preference of opening a channel of the given size with them. The
// returned channel candidates maps the NodeID to an attachment
// directive containing a score.
//
// The scores will be in the range [0, M], where 0 indicates no
// improvement in connectivity if a channel is opened to this node,
@@ -126,7 +126,7 @@ type AttachmentHeuristic interface {
// NOTE: A NodeID not found in the returned map is implicitly given a
// score of 0.
NodeScores(g ChannelGraph, chans []Channel,
fundsAvailable btcutil.Amount, nodes map[NodeID]struct{}) (
chanSize btcutil.Amount, nodes map[NodeID]struct{}) (
map[NodeID]*AttachmentDirective, error)
}