func TestChannelEmptyConsumer(t *testing.T) {
opts := nsqdNs.NewOptions()
opts.Logger = newTestLogger(t)
tcpAddr, _, nsqd, nsqdServer := mustStartNSQD(opts)
defer os.RemoveAll(opts.DataPath)
defer nsqdServer.Exit()
conn, _ := mustConnectNSQD(tcpAddr)
defer conn.Close()
topicName := "test_channel_empty" + strconv.Itoa(int(time.Now().Unix()))
topic := nsqd.GetTopicIgnPart(topicName)
channel := topic.GetChannel("channel")
client := nsqdNs.NewClientV2(0, conn, opts, nil)
client.SetReadyCount(25)
channel.AddClient(client.ID, client)
for i := 0; i < 25; i++ {
msg := nsqdNs.NewMessage(nsqdNs.MessageID(i), []byte("test"))
channel.StartInFlightTimeout(msg, 0, "", opts.MsgTimeout)
client.SendingMessage()
}
for _, cl := range channel.GetClients() {
stats := cl.Stats()
test.Equal(t, stats.InFlightCount, int64(25))
}
channel.SetConsumeOffset(channel.GetChannelEnd().Offset(), channel.GetChannelEnd().TotalMsgCnt(), true)
time.Sleep(time.Second)
for _, cl := range channel.GetClients() {
stats := cl.Stats()
test.Equal(t, stats.InFlightCount, int64(0))
}
}
func (p *protocolV2) IOLoop(conn net.Conn) error {
var err error
var line []byte
var zeroTime time.Time
left := make([]byte, 100)
tmpLine := make([]byte, 100)
clientID := p.ctx.nextClientID()
client := nsqd.NewClientV2(clientID, conn, p.ctx.getOpts(), p.ctx.GetTlsConfig())
// synchronize the startup of messagePump in order
// to guarantee that it gets a chance to initialize
// goroutine local state derived from client attributes
// and avoid a potential race with IDENTIFY (where a client
// could have changed or disabled said attributes)
messagePumpStartedChan := make(chan bool)
msgPumpStoppedChan := make(chan bool)
go p.messagePump(client, messagePumpStartedChan, msgPumpStoppedChan)
<-messagePumpStartedChan
for {
if client.HeartbeatInterval > 0 {
client.SetReadDeadline(time.Now().Add(client.HeartbeatInterval * 2))
} else {
client.SetReadDeadline(zeroTime)
}
// ReadSlice does not allocate new space for the data each request
// ie. the returned slice is only valid until the next call to it
line, err = client.Reader.ReadSlice('\n')
if err != nil {
if err == io.EOF {
err = nil
} else {
err = fmt.Errorf("failed to read command - %s", err)
}
break
}
if p.ctx.getOpts().Verbose || nsqd.NsqLogger().Level() >= levellogger.LOG_DETAIL {
nsqd.NsqLogger().Logf("PROTOCOL(V2) got client command: %v ", line)
}
// handle the compatible for message id.
// Since the new message id is id+traceid. we can not
// use \n to check line.
// REQ, FIN, TOUCH (with message id as param) should be handled.
// FIN 16BYTES\n
// REQ 16bytes time\n
// TOUCH 16bytes\n
isSpecial := false
params := make([][]byte, 0)
if len(line) >= 3 {
if bytes.Equal(line[:3], []byte("FIN")) ||
bytes.Equal(line[:3], []byte("REQ")) {
isSpecial = true
if len(line) < 21 {
left = left[:20-len(line)]
nr := 0
nr, err = io.ReadFull(client.Reader, left)
if err != nil {
nsqd.NsqLogger().LogErrorf("read param err:%v", err)
}
line = append(line, left[:nr]...)
tmpLine = tmpLine[:len(line)]
copy(tmpLine, line)
// the readslice will overwrite the slice line,
// so we should copy it and copy back.
extra, extraErr := client.Reader.ReadSlice('\n')
tmpLine = append(tmpLine, extra...)
line = append(line[:0], tmpLine...)
if extraErr != nil {
nsqd.NsqLogger().LogErrorf("read param err:%v", extraErr)
}
}
params = append(params, line[:3])
if len(line) >= 21 {
params = append(params, line[4:20])
// it must be REQ
if bytes.Equal(line[:3], []byte("REQ")) {
if len(line) >= 22 {
params = append(params, line[21:len(line)-1])
}
} else {
params = append(params, line[20:])
}
} else {
params = append(params, []byte(""))
}
} else if len(line) >= 5 {
if bytes.Equal(line[:5], []byte("TOUCH")) {
isSpecial = true
if len(line) < 23 {
left = left[:23-len(line)]
nr := 0
nr, err = io.ReadFull(client.Reader, left)
if err != nil {
nsqd.NsqLogger().Logf("TOUCH param err:%v", err)
}
line = append(line, left[:nr]...)
}
params = append(params, line[:5])
if len(line) >= 23 {
params = append(params, line[6:22])
} else {
params = append(params, []byte(""))
}
}
}
}
if p.ctx.getOpts().Verbose || nsqd.NsqLogger().Level() >= levellogger.LOG_DETAIL {
nsqd.NsqLogger().Logf("PROTOCOL(V2) got client command: %v ", line)
}
if !isSpecial {
// trim the '\n'
line = line[:len(line)-1]
// optionally trim the '\r'
if len(line) > 0 && line[len(line)-1] == '\r' {
line = line[:len(line)-1]
}
params = bytes.Split(line, separatorBytes)
}
if p.ctx.getOpts().Verbose || nsqd.NsqLogger().Level() >= levellogger.LOG_DETAIL {
nsqd.NsqLogger().Logf("PROTOCOL(V2): [%s] %v, %v", client, string(params[0]), params)
}
var response []byte
response, err = p.Exec(client, params)
err = handleRequestReponseForClient(client, response, err)
if err != nil {
break
}
}
if err != nil {
nsqd.NsqLogger().Logf("PROTOCOL(V2): client [%s] exiting ioloop with error: %v", client, err)
}
nsqd.NsqLogger().LogDebugf("PROTOCOL(V2): client [%s] exiting ioloop", client)
close(client.ExitChan)
p.ctx.nsqd.CleanClientPubStats(client.RemoteAddr().String(), "tcp")
<-msgPumpStoppedChan
if client.Channel != nil {
client.Channel.RequeueClientMessages(client.ID, client.String())
client.Channel.RemoveClient(client.ID)
}
client.FinalClose()
return err
}
