6 log "github.com/sirupsen/logrus"
8 "github.com/vapor/crypto"
9 "github.com/vapor/crypto/ed25519/chainkd"
10 "github.com/vapor/federation/config"
11 "github.com/vapor/protocol/vm/vmutil"
14 func ParseFedProg(warders []config.Warder, quorum int) []byte {
17 xpubs := []chainkd.XPub{}
18 for _, w := range warders {
19 xpubs = append(xpubs, w.XPub)
22 scirpt, err := vmutil.P2SPMultiSigProgram(chainkd.XPubKeys(xpubs), quorum)
24 log.Panicf("fail to generate federation scirpt for federation: %v", err)
27 scriptHash := crypto.Sha256(scirpt)
28 wscript, err := vmutil.P2WSHProgram(scriptHash)
30 log.Panicf("Fail converts scriptHash to witness: %v", err)
36 type byPosition []config.Warder
38 func (w byPosition) Len() int { return len(w) }
39 func (w byPosition) Swap(i, j int) { w[i], w[j] = w[j], w[i] }
40 func (w byPosition) Less(i, j int) bool { return w[i].Position < w[j].Position }
42 func SortWarders(warders []config.Warder) []config.Warder {
43 sort.Sort(byPosition(warders))