func replyError(err error) error {
if mysql.ErrorEqual(err, mysql.ErrBadConn) {
return sqldriver.ErrBadConn
} else {
return errors.Trace(err)
}
}
func (c *Canal) travelRowsEventHandler(e *RowsEvent) error {
c.rsLock.Lock()
defer c.rsLock.Unlock()
var err error
for _, h := range c.rsHandlers {
if err = h.Do(e); err != nil && !mysql.ErrorEqual(err, ErrHandleInterrupted) {
log.Errorf("handle %v err: %v", h, err)
} else if mysql.ErrorEqual(err, ErrHandleInterrupted) {
log.Errorf("handle %v err, interrupted", h)
return ErrHandleInterrupted
}
}
return nil
}
// Parse the dump data with Dumper generate.
// It can not parse all the data formats with mysqldump outputs
func Parse(r io.Reader, h ParseHandler) error {
rb := bufio.NewReaderSize(r, 1024*16)
var db string
var binlogParsed bool
for {
line, err := rb.ReadString('\n')
if err != nil && err != io.EOF {
return errors.Trace(err)
} else if mysql.ErrorEqual(err, io.EOF) {
break
}
line = line[0 : len(line)-1]
if !binlogParsed {
if m := binlogExp.FindAllStringSubmatch(line, -1); len(m) == 1 {
name := m[0][1]
pos, err := strconv.ParseUint(m[0][2], 10, 64)
if err != nil {
return errors.Errorf("parse binlog %v err, invalid number", line)
}
if err = h.BinLog(name, pos); err != nil && err != ErrSkip {
return errors.Trace(err)
}
binlogParsed = true
}
}
if m := useExp.FindAllStringSubmatch(line, -1); len(m) == 1 {
db = m[0][1]
}
if m := valuesExp.FindAllStringSubmatch(line, -1); len(m) == 1 {
table := m[0][1]
values, err := parseValues(m[0][2])
if err != nil {
return errors.Errorf("parse values %v err", line)
}
if err = h.Data(db, table, values); err != nil && err != ErrSkip {
return errors.Trace(err)
}
}
}
return nil
}