func checkMetadataForInsert(m gregor.Metadata) error {
if m.MsgID() == nil {
return fmt.Errorf("bad metadata; nil MsgID")
}
if m.UID() == nil {
return fmt.Errorf("bad metadata: nil UID")
}
return nil
}
func (s *SQLEngine) consumeInBandMessageMetadata(tx *sql.Tx, md gregor.Metadata, t gregor.InBandMsgType) (gregor.Metadata, error) {
if err := checkMetadataForInsert(md); err != nil {
return nil, err
}
if t != gregor.InBandMsgTypeUpdate && t != gregor.InBandMsgTypeSync {
return nil, fmt.Errorf("bad metadata: unrecognized msg type")
}
qb := s.newQueryBuilder()
qb.Build("INSERT INTO gregor_messages(uid, msgid, mtype, devid, ctime) VALUES(?, ?, ?, ?,",
hexEnc(md.UID()), hexEnc(md.MsgID()), int(t), hexEncOrNull(md.DeviceID()))
if md.CTime().IsZero() {
qb.Now()
} else {
qb.AddTime(md.CTime())
}
qb.Build(")")
if err := qb.Exec(tx); err != nil {
return nil, err
}
if !md.CTime().IsZero() {
return md, nil
}
// get the inserted ctime
ctime, err := s.ctimeFromMessage(tx, md.UID(), md.MsgID())
if err != nil {
return nil, err
}
return s.objFactory.MakeMetadata(md.UID(), md.MsgID(), md.DeviceID(), ctime, md.InBandMsgType())
}