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watchtower: add ListClosableSessions method

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This commit adds a new ListClosableSessions method to the tower client
DB. This method will return a map of sessionIDs to block heights. The
IDs belong to sessions that are considered closable and the block
heights are the block height at which the last associated channel for
the session was closed in.
This commit is contained in:
Elle Mouton
2022-10-21 11:22:20 +02:00
parent 571966440c
commit 3577c829d3
4 changed files with 75 additions and 1 deletions
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14
watchtower/wtmock/client_db.go
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@@ -551,6 +551,20 @@ func (m *ClientDB) AckUpdate(id *wtdb.SessionID, seqNum,
return wtdb.ErrCommittedUpdateNotFound
}
// ListClosableSessions fetches and returns the IDs for all sessions marked as
// closable.
func (m *ClientDB) ListClosableSessions() (map[wtdb.SessionID]uint32, error) {
m.mu.Lock()
defer m.mu.Unlock()
cs := make(map[wtdb.SessionID]uint32, len(m.closableSessions))
for id, height := range m.closableSessions {
cs[id] = height
}
return cs, nil
}
// FetchChanSummaries loads a mapping from all registered channels to their
// channel summaries.
func (m *ClientDB) FetchChanSummaries() (wtdb.ChannelSummaries, error) {