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Merge pull request #1202 from cfromknecht/link-sync-circuit-commit

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htlcswitch/link: ensure circuits are committed in-order
This commit is contained in:
Olaoluwa Osuntokun
2018-05-08 18:53:05 -07:00
committed by GitHub
parent b437553b5a de9de771bb
commit 01a9b6b7da
1 changed files with 11 additions and 3 deletions
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14
htlcswitch/link.go
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@@ -1859,7 +1859,10 @@ func (l *channelLink) processRemoteSettleFails(fwdPkg *channeldb.FwdPkg,
} }
} }
go l.forwardBatch(switchPackets...) // Only spawn the task forward packets we have a non-zero number.
if len(switchPackets) > 0 {
go l.forwardBatch(switchPackets...)
}
} }
// processRemoteAdds serially processes each of the Add payment descriptors // processRemoteAdds serially processes each of the Add payment descriptors
@@ -2365,7 +2368,12 @@ func (l *channelLink) processRemoteAdds(fwdPkg *channeldb.FwdPkg,
l.debugf("forwarding %d packets to switch", len(switchPackets)) l.debugf("forwarding %d packets to switch", len(switchPackets))
go l.forwardBatch(switchPackets...) // NOTE: This call is made synchronous so that we ensure all circuits
// are committed in the exact order that they are processed in the link.
// Failing to do this could cause reorderings/gaps in the range of
// opened circuits, which violates assumptions made by the circuit
// trimming.
l.forwardBatch(switchPackets...)
return needUpdate return needUpdate
} }
@@ -2387,7 +2395,7 @@ func (l *channelLink) forwardBatch(packets ...*htlcPacket) {
} }
errChan := l.cfg.ForwardPackets(filteredPkts...) errChan := l.cfg.ForwardPackets(filteredPkts...)
l.handleBatchFwdErrs(errChan) go l.handleBatchFwdErrs(errChan)
} }
// handleBatchFwdErrs waits on the given errChan until it is closed, logging // handleBatchFwdErrs waits on the given errChan until it is closed, logging