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multi: remove function BalancesAtHeight

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This commit deletes the function `BalancesAtHeight` since its only
usague is to find the push amount, which can be achieved by saving the
initial balances.
Another reason to remove it is to pave the way to incooperate our new
revocation log. If we ever need this function again, we can add it back
by visiting all the revocation logs to calculate the balances at a given
height.
This commit is contained in:
yyforyongyu
2022-04-08 04:27:26 +08:00
parent 7eaf0d0089
commit f42d1f2d62
4 changed files with 24 additions and 249 deletions
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43
channeldb/channel.go
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@@ -183,11 +183,6 @@ var (
// ErrMissingIndexEntry is returned when a caller attempts to close a
// channel and the outpoint is missing from the index.
ErrMissingIndexEntry = fmt.Errorf("missing outpoint from index")
// errHeightNotFound is returned when a query for channel balances at
// a height that we have not reached yet is made.
errHeightNotReached = fmt.Errorf("height requested greater than " +
"current commit height")
)
const (
@@ -1653,44 +1648,6 @@ func (c *OpenChannel) UpdateCommitment(newCommitment *ChannelCommitment,
return nil
}
// BalancesAtHeight returns the local and remote balances on our commitment
// transactions as of a given height.
//
// NOTE: these are our balances *after* subtracting the commitment fee and
// anchor outputs.
func (c *OpenChannel) BalancesAtHeight(height uint64) (lnwire.MilliSatoshi,
lnwire.MilliSatoshi, error) {
if height > c.LocalCommitment.CommitHeight &&
height > c.RemoteCommitment.CommitHeight {
return 0, 0, errHeightNotReached
}
// If our current commit is as the desired height, we can return our
// current balances.
if c.LocalCommitment.CommitHeight == height {
return c.LocalCommitment.LocalBalance,
c.LocalCommitment.RemoteBalance, nil
}
// If our current remote commit is at the desired height, we can return
// the current balances.
if c.RemoteCommitment.CommitHeight == height {
return c.RemoteCommitment.LocalBalance,
c.RemoteCommitment.RemoteBalance, nil
}
// If we are not currently on the height requested, we need to look up
// the previous height to obtain our balances at the given height.
commit, err := c.FindPreviousState(height)
if err != nil {
return 0, 0, err
}
return commit.LocalBalance, commit.RemoteBalance, nil
}
// ActiveHtlcs returns a slice of HTLC's which are currently active on *both*
// commitment transactions.
func (c *OpenChannel) ActiveHtlcs() []HTLC {