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autopilot: Exclude nodes that previously failed

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This commit is contained in:
Simon Horlick 2018-01-13 18:01:55 +08:00 committed by Olaoluwa Osuntokun
parent a43d7d3532
commit 73468cf06e
1 changed files with 18 additions and 7 deletions
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25
autopilot/agent.go
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@ -231,18 +231,21 @@ func (a *Agent) OnChannelClose(closedChans ...lnwire.ShortChannelID) {
// channels open to, with the set of nodes that are pending new channels. This
// ensures that the Agent doesn't attempt to open any "duplicate" channels to
// the same node.
func mergeNodeMaps(a map[NodeID]struct{},
b map[NodeID]Channel) map[NodeID]struct{} {
func mergeNodeMaps(a map[NodeID]struct{}, b map[NodeID]struct{},
c map[NodeID]Channel) map[NodeID]struct{} {
c := make(map[NodeID]struct{}, len(a)+len(b))
res := make(map[NodeID]struct{}, len(a)+len(b)+len(c))
for nodeID := range a {
c[nodeID] = struct{}{}
res[nodeID] = struct{}{}
}
for nodeID := range b {
c[nodeID] = struct{}{}
res[nodeID] = struct{}{}
}
for nodeID := range c {
res[nodeID] = struct{}{}
}
return c
return res
}
// mergeChanState merges the Agent's set of active channels, with the set of
@ -280,6 +283,10 @@ func (a *Agent) controller(startingBalance btcutil.Amount) {
// TODO(roasbeef): do we in fact need to maintain order?
// * use sync.Cond if so
// failedNodes lists nodes that we've previously attempted to initiate
// channels with, but didn't succeed.
failedNodes := make(map[NodeID]struct{})
// pendingOpens tracks the channels that we've requested to be
// initiated, but haven't yet been confirmed as being fully opened.
// This state is required as otherwise, we may go over our allotted
@ -369,7 +376,7 @@ func (a *Agent) controller(startingBalance btcutil.Amount) {
// we avoid duplicate edges.
connectedNodes := a.chanState.ConnectedNodes()
pendingMtx.Lock()
nodesToSkip := mergeNodeMaps(connectedNodes, pendingOpens)
nodesToSkip := mergeNodeMaps(connectedNodes, failedNodes, pendingOpens)
pendingMtx.Unlock()
// If we reach this point, then according to our
@ -428,6 +435,10 @@ func (a *Agent) controller(startingBalance btcutil.Amount) {
pendingMtx.Lock()
nID := NewNodeID(directive.PeerKey)
delete(pendingOpens, nID)
// Mark this node as failed so we don't
// attempt it again.
failedNodes[nID] = struct{}{}
pendingMtx.Unlock()
// Trigger the autopilot controller to