func commandStats(q queue.Queue, tokens []string, r *bufio.Reader, w *bufio.Writer) error {
fields := len(tokens)
if fields != 1 && fields != 2 {
fmt.Fprint(w, CLIENT_ERROR_BADCMD_FORMAT)
return errors.NotValidf("mc tokens %v ", tokens)
}
if fields == 1 {
// TODO: implement stats command
fmt.Fprint(w, END)
} else if fields == 2 && strings.EqualFold(tokens[1], "queue") {
accumulationInfos, err := q.AccumulationStatus()
if err != nil {
fmt.Fprintf(w, "%s %s\r\n", ENGINE_ERROR_PREFIX, err)
return nil
}
for _, accumulationInfo := range accumulationInfos {
fmt.Fprintf(w, "%s %s.%s %d/%d \r\n", "STAT",
accumulationInfo.Group,
accumulationInfo.Queue,
accumulationInfo.Total,
accumulationInfo.Consumed)
}
fmt.Fprint(w, END)
} else {
fmt.Fprint(w, ERROR)
}
return nil
}
func commandGet(q queue.Queue, tokens []string, r *bufio.Reader, w *bufio.Writer) error {
fields := len(tokens)
if fields < 2 {
fmt.Fprint(w, ERROR)
return errors.NotValidf("mc tokens %v ", tokens)
}
cmd := tokens[0]
keyValues := make([]pair, 0)
for _, key := range tokens[1:] {
k := strings.Split(key, ".")
queue := k[0]
group := defaultGroup
if len(k) > 1 {
group = k[0]
queue = k[1]
}
id, data, flag, err := q.RecvMessage(queue, group)
if err != nil {
if errors.Cause(err) == kafka.ErrTimeout {
w.WriteString(END)
} else {
fmt.Fprintf(w, "%s %s\r\n", ENGINE_ERROR_PREFIX, err)
}
return nil
}
// eset data : idlen id data
if strings.EqualFold(cmd, EGET_NAME) {
idLen := (byte)(len(id))
esetData := make([]byte, 0)
esetData = append(esetData, idLen)
esetData = append(esetData, ([]byte)(id)...)
data = append(esetData, data...)
}
keyValues = append(keyValues, pair{
key: key,
queue: queue,
group: group,
id: id,
value: data,
flag: flag,
})
}
for _, kv := range keyValues {
fmt.Fprintf(w, "%s %s %d %d\r\n", VALUE, kv.key, kv.flag, len(kv.value))
w.Write(kv.value)
w.WriteString("\r\n")
if strings.EqualFold(cmd, GET_NAME) {
q.AckMessage(kv.queue, kv.group, kv.id)
}
}
w.WriteString(END)
return nil
}
func commandACK(q queue.Queue, tokens []string, r *bufio.Reader, w *bufio.Writer) error {
var noreply string
fields := len(tokens)
if fields != 5 && fields != 6 {
fmt.Fprint(w, CLIENT_ERROR_BADCMD_FORMAT)
return errors.NotValidf("mc tokens %v ", tokens)
}
key := tokens[1]
if fields == 6 {
noreply = tokens[5]
}
// for ack command, flag is unused
_, err := strconv.ParseUint(tokens[2], 10, 32)
if err != nil {
fmt.Fprint(w, CLIENT_ERROR_BADCMD_FORMAT)
return errors.Trace(err)
}
length, err := strconv.ParseUint(tokens[4], 10, 32)
if err != nil {
fmt.Fprint(w, CLIENT_ERROR_BADCMD_FORMAT)
return errors.Trace(err)
}
id := make([]byte, length)
_, err = io.ReadAtLeast(r, id, int(length))
if err != nil {
fmt.Fprint(w, CLIENT_ERROR_BAD_DATACHUNK)
return errors.Trace(err)
}
r.ReadString('\n')
keys := strings.Split(key, ".")
group := defaultGroup
queue := keys[0]
if len(keys) > 1 {
group = keys[0]
queue = keys[1]
}
err = q.AckMessage(queue, group, string(id))
if err != nil {
fmt.Fprintf(w, "%s %s\r\n", ENGINE_ERROR_PREFIX, err)
return nil
}
if NOREPLY == noreply {
return nil
}
fmt.Fprint(w, STORED)
return nil
}
func commandSet(q queue.Queue, tokens []string, r *bufio.Reader, w *bufio.Writer) error {
var noreply string
fields := len(tokens)
if fields != 5 && fields != 6 {
fmt.Fprint(w, CLIENT_ERROR_BADCMD_FORMAT)
return errors.NotValidf("mc tokens %v ", tokens)
}
cmd := tokens[0]
key := tokens[1]
if fields == 6 {
noreply = tokens[5]
}
flag, err := strconv.ParseUint(tokens[2], 10, 32)
if err != nil {
fmt.Fprint(w, CLIENT_ERROR_BADCMD_FORMAT)
return errors.Trace(err)
}
length, err := strconv.ParseUint(tokens[4], 10, 32)
if err != nil {
fmt.Fprint(w, CLIENT_ERROR_BADCMD_FORMAT)
return errors.Trace(err)
}
data := make([]byte, length)
_, err = io.ReadAtLeast(r, data, int(length))
if err != nil {
fmt.Fprint(w, CLIENT_ERROR_BAD_DATACHUNK)
return errors.Trace(err)
}
r.ReadString('\n')
keys := strings.Split(key, ".")
group := defaultGroup
queue := keys[0]
if len(keys) > 1 {
group = keys[0]
queue = keys[1]
}
id, err := q.SendMessage(queue, group, data, flag)
if err != nil {
fmt.Fprintf(w, "%s %s\r\n", ENGINE_ERROR_PREFIX, err)
return nil
}
if NOREPLY == noreply {
return nil
}
// if eset command, return message id
if strings.EqualFold(cmd, ESET_NAME) {
fmt.Fprint(w, id+" "+STORED)
return nil
}
fmt.Fprint(w, STORED)
return nil
}
