lnd.xprv/channeldb/legacy_serialization.go
Olaoluwa Osuntokun 0386e0c297 Revert "channeldb: remove unsupported migrations"
This reverts commit 3ab4c749c6da4c2693b3978c0a0863787c9c3495.
2019-10-12 00:47:45 -07:00

56 lines
1.6 KiB
Go

package channeldb
import (
"io"
)
// deserializeCloseChannelSummaryV6 reads the v6 database format for
// ChannelCloseSummary.
//
// NOTE: deprecated, only for migration.
func deserializeCloseChannelSummaryV6(r io.Reader) (*ChannelCloseSummary, error) {
c := &ChannelCloseSummary{}
err := ReadElements(r,
&c.ChanPoint, &c.ShortChanID, &c.ChainHash, &c.ClosingTXID,
&c.CloseHeight, &c.RemotePub, &c.Capacity, &c.SettledBalance,
&c.TimeLockedBalance, &c.CloseType, &c.IsPending,
)
if err != nil {
return nil, err
}
// We'll now check to see if the channel close summary was encoded with
// any of the additional optional fields.
err = ReadElements(r, &c.RemoteCurrentRevocation)
switch {
case err == io.EOF:
return c, nil
// If we got a non-eof error, then we know there's an actually issue.
// Otherwise, it may have been the case that this summary didn't have
// the set of optional fields.
case err != nil:
return nil, err
}
if err := readChanConfig(r, &c.LocalChanConfig); err != nil {
return nil, err
}
// Finally, we'll attempt to read the next unrevoked commitment point
// for the remote party. If we closed the channel before receiving a
// funding locked message, then this can be nil. As a result, we'll use
// the same technique to read the field, only if there's still data
// left in the buffer.
err = ReadElements(r, &c.RemoteNextRevocation)
if err != nil && err != io.EOF {
// If we got a non-eof error, then we know there's an actually
// issue. Otherwise, it may have been the case that this
// summary didn't have the set of optional fields.
return nil, err
}
return c, nil
}