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multi: partition lnwire.ChanUpdateFlag into ChannelFlags and MessageFlags

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In this commit:

* we partition lnwire.ChanUpdateFlag into two (ChanUpdateChanFlags and
ChanUpdateMsgFlags), from a uint16 to a pair of uint8's

* we rename the ChannelUpdate.Flags to ChannelFlags and add an
additional MessageFlags field, which will be used to indicate the
presence of the optional field HtlcMaximumMsat within the ChannelUpdate.

* we partition ChannelEdgePolicy.Flags into message and channel flags.
This change corresponds to the partitioning of the ChannelUpdate's Flags
field into MessageFlags and ChannelFlags.

Co-authored-by: Johan T. Halseth <johanth@gmail.com>
This commit is contained in:
Valentine Wallace
2019-01-12 18:59:43 +01:00
committed by Johan T. Halseth
parent 375be936ce
commit 0fd6004958
21 changed files with 176 additions and 113 deletions
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26
lnwire/lnwire.go
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@@ -105,9 +105,15 @@ func WriteElement(w io.Writer, element interface{}) error {
if _, err := w.Write(b[:]); err != nil {
return err
}
case ChanUpdateFlag:
var b [2]byte
binary.BigEndian.PutUint16(b[:], uint16(e))
case ChanUpdateMsgFlags:
var b [1]byte
b[0] = uint8(e)
if _, err := w.Write(b[:]); err != nil {
return err
}
case ChanUpdateChanFlags:
var b [1]byte
b[0] = uint8(e)
if _, err := w.Write(b[:]); err != nil {
return err
}
@@ -470,12 +476,18 @@ func ReadElement(r io.Reader, element interface{}) error {
return err
}
*e = binary.BigEndian.Uint16(b[:])
case *ChanUpdateFlag:
var b [2]byte
if _, err := io.ReadFull(r, b[:]); err != nil {
case *ChanUpdateMsgFlags:
var b [1]uint8
if _, err := r.Read(b[:]); err != nil {
return err
}
*e = ChanUpdateFlag(binary.BigEndian.Uint16(b[:]))
*e = ChanUpdateMsgFlags(b[0])
case *ChanUpdateChanFlags:
var b [1]uint8
if _, err := r.Read(b[:]); err != nil {
return err
}
*e = ChanUpdateChanFlags(b[0])
case *ErrorCode:
var b [2]byte
if _, err := io.ReadFull(r, b[:]); err != nil {