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Merge pull request #3763 from joostjager/close-later

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cnct: keep open channel data after channel commitment tx confirms
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Joost Jager 2019-12-17 16:00:20 +01:00 committed by GitHub
commit 2ce22d912b
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1 changed files with 26 additions and 1 deletions
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27
channeldb/channel.go
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@ -37,6 +37,11 @@ var (
// TODO(roasbeef): flesh out comment
openChannelBucket = []byte("open-chan-bucket")
// historicalChannelBucket stores all channels that have seen their
// commitment tx confirm. All information from their previous open state
// is retained.
historicalChannelBucket = []byte("historical-chan-bucket")
// chanInfoKey can be accessed within the bucket for a channel
// (identified by its chanPoint). This key stores all the static
// information for a channel which is decided at the end of the
@ -2285,7 +2290,8 @@ func (c *OpenChannel) CloseChannel(summary *ChannelCloseSummary) error {
if err != nil {
return err
}
chanBucket := chainBucket.Bucket(chanPointBuf.Bytes())
chanKey := chanPointBuf.Bytes()
chanBucket := chainBucket.Bucket(chanKey)
if chanBucket == nil {
return ErrNoActiveChannels
}
@ -2322,6 +2328,25 @@ func (c *OpenChannel) CloseChannel(summary *ChannelCloseSummary) error {
return err
}
// Add channel state to the historical channel bucket.
historicalBucket, err := tx.CreateBucketIfNotExists(
historicalChannelBucket,
)
if err != nil {
return err
}
historicalChanBucket, err :=
historicalBucket.CreateBucketIfNotExists(chanKey)
if err != nil {
return err
}
err = putOpenChannel(historicalChanBucket, chanState)
if err != nil {
return err
}
// Finally, create a summary of this channel in the closed
// channel bucket for this node.
return putChannelCloseSummary(