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htlcswitch: return concrete error from GetLinksByInterface

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This commit is contained in:
Wilmer Paulino 2018-08-28 20:10:02 -07:00
parent a1f549754b
commit 33dda07b62
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GPG Key ID: 6DF57B9F9514972F
1 changed files with 5 additions and 2 deletions
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7
htlcswitch/switch.go
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@ -55,6 +55,10 @@ var (
// request. // request.
ErrSwitchExiting = errors.New("htlcswitch shutting down") ErrSwitchExiting = errors.New("htlcswitch shutting down")
// ErrNoLinksFound is an error returned when we attempt to retrieve the
// active links in the switch for a specific destination.
ErrNoLinksFound = errors.New("no channel links found")
// zeroPreimage is the empty preimage which is returned when we have // zeroPreimage is the empty preimage which is returned when we have
// some errors. // some errors.
zeroPreimage [sha256.Size]byte zeroPreimage [sha256.Size]byte
@ -2105,8 +2109,7 @@ func (s *Switch) GetLinksByInterface(hop [33]byte) ([]ChannelLink, error) {
func (s *Switch) getLinks(destination [33]byte) ([]ChannelLink, error) { func (s *Switch) getLinks(destination [33]byte) ([]ChannelLink, error) {
links, ok := s.interfaceIndex[destination] links, ok := s.interfaceIndex[destination]
if !ok { if !ok {
return nil, fmt.Errorf("unable to locate channel link by "+ return nil, ErrNoLinksFound
"destination hop id %x", destination)
} }
channelLinks := make([]ChannelLink, 0, len(links)) channelLinks := make([]ChannelLink, 0, len(links))