func ObjectIDOfWebString(s string) bson.ObjectId {
b, err := hex.DecodeString(s)
if err != nil {
return ""
}
return bson.ObjectId(b)
}
func (kp *KPartite) makeEdgeID(from, to bson.ObjectId) bson.ObjectId {
kp.Lock()
kp.edgeHash.Reset()
kp.edgeHash.Write([]byte(from))
kp.edgeHash.Write([]byte(to))
h := kp.edgeHash.Sum()
kp.Unlock()
return bson.ObjectId(h[:IDLEN])
}
func chooseID() bson.ObjectId {
rand.Seed(time.Nanoseconds())
b := make([]byte, IDLEN)
for i := 0; i < IDLEN/4; i++ {
u := rand.Uint32()
b[4*i] = byte(u & 0xff)
b[4*i+1] = byte((u >> 8) & 0xff)
b[4*i+2] = byte((u >> 16) & 0xff)
b[4*i+3] = byte((u >> 24) & 0xff)
}
return bson.ObjectId(b)
}