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lnwallet: add new PreimageCache interface

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Olaoluwa Osuntokun 2018-01-16 18:04:07 -08:00
parent a9d451e46d
commit b1503adfad
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1 changed files with 16 additions and 2 deletions
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18
lnwallet/interface.go
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@ -278,13 +278,27 @@ type MessageSigner interface {
SignMessage(pubKey *btcec.PublicKey, msg []byte) (*btcec.Signature, error) SignMessage(pubKey *btcec.PublicKey, msg []byte) (*btcec.Signature, error)
} }
// PreimageCache is an interface that represents a global cache for preimages.
// We'll utilize this cache to communicate the discovery of new preimages
// across sub-systems.
type PreimageCache interface {
// LookupPreimage attempts to look up a preimage according to its hash.
// If found, the preimage is returned along with true for the second
// argument. Otherwise, it'll return false.
LookupPreimage(hash []byte) ([]byte, bool)
// AddPreimage attempts to add a new preimage to the global cache. If
// successful a nil error will be returned.
AddPreimage(preimage []byte) error
}
// WalletDriver represents a "driver" for a particular concrete // WalletDriver represents a "driver" for a particular concrete
// WalletController implementation. A driver is identified by a globally unique // WalletController implementation. A driver is identified by a globally unique
// string identifier along with a 'New()' method which is responsible for // string identifier along with a 'New()' method which is responsible for
// initializing a particular WalletController concrete implementation. // initializing a particular WalletController concrete implementation.
type WalletDriver struct { type WalletDriver struct {
// WalletType is a string which uniquely identifies the WalletController // WalletType is a string which uniquely identifies the
// that this driver, drives. // WalletController that this driver, drives.
WalletType string WalletType string
// New creates a new instance of a concrete WalletController // New creates a new instance of a concrete WalletController