mirrors/lnd
1
0
Fork 0
mirror of https://github.com/lightningnetwork/lnd.git synced 2025-01-19 05:45:21 +01:00
Code Issues Projects Releases Wiki Activity

rpcserver: extract abandonChan method

Browse Source 
We'll want to re-use the abandon channel functionality for the batch
funding, as a cleanup in case the funding is aborted before publishing
any transaction.
This commit is contained in:
Oliver Gugger 2021-08-24 11:21:54 +02:00
parent ae2e9541a4
commit 37d0d651c4
No known key found for this signature in database
GPG Key ID: 8E4256593F177720
1 changed files with 40 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
rpcserver.go
View File

@ -2394,6 +2394,44 @@ func abandonChanFromGraph(chanGraph *channeldb.ChannelGraph,
return chanGraph.DeleteChannelEdges(false, chanID)
}
// abandonChan removes a channel from the database, graph and contract court.
func (r *rpcServer) abandonChan(chanPoint *wire.OutPoint,
bestHeight uint32) error {
// Abandoning a channel is a three-step process: remove from the open
// channel state, remove from the graph, remove from the contract
// court. Between any step it's possible that the users restarts the
// process all over again. As a result, each of the steps below are
// intended to be idempotent.
err := r.server.chanStateDB.AbandonChannel(chanPoint, bestHeight)
if err != nil {
return err
}
err = abandonChanFromGraph(r.server.graphDB, chanPoint)
if err != nil {
return err
}
err = r.server.chainArb.ResolveContract(*chanPoint)
if err != nil {
return err
}
// If this channel was in the process of being closed, but didn't fully
// close, then it's possible that the nursery is hanging on to some
// state. To err on the side of caution, we'll now attempt to wipe any
// state for this channel from the nursery.
err = r.server.utxoNursery.cfg.Store.RemoveChannel(chanPoint)
if err != nil && err != ErrContractNotFound {
return err
}
// Finally, notify the backup listeners that the channel can be removed
// from any channel backups.
r.server.channelNotifier.NotifyClosedChannelEvent(*chanPoint)
return nil
}
// AbandonChannel removes all channel state from the database except for a
// close summary. This method can be used to get rid of permanently unusable
// channels due to bugs fixed in newer versions of lnd.
@ -2472,36 +2510,10 @@ func (r *rpcServer) AbandonChannel(_ context.Context,
return nil, err
}
// Abandoning a channel is a three step process: remove from the open
// channel state, remove from the graph, remove from the contract
// court. Between any step it's possible that the users restarts the
// process all over again. As a result, each of the steps below are
// intended to be idempotent.
err = r.server.chanStateDB.AbandonChannel(chanPoint, uint32(bestHeight))
if err != nil {
// Remove the channel from the graph, database and contract court.
if err := r.abandonChan(chanPoint, uint32(bestHeight)); err != nil {
return nil, err
}
err = abandonChanFromGraph(r.server.graphDB, chanPoint)
if err != nil {
return nil, err
}
err = r.server.chainArb.ResolveContract(*chanPoint)
if err != nil {
return nil, err
}
// If this channel was in the process of being closed, but didn't fully
// close, then it's possible that the nursery is hanging on to some
// state. To err on the side of caution, we'll now attempt to wipe any
// state for this channel from the nursery.
err = r.server.utxoNursery.cfg.Store.RemoveChannel(chanPoint)
if err != nil && err != ErrContractNotFound {
return nil, err
}
// Finally, notify the backup listeners that the channel can be removed
// from any channel backups.
r.server.channelNotifier.NotifyClosedChannelEvent(*chanPoint)
return &lnrpc.AbandonChannelResponse{}, nil
}