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move starqueue from starnet to stario

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master
兔子 4 months ago
parent 1de78f2f06
commit f6363fed07
2 changed files with 0 additions and 367 deletions
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325
que.go
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@ -1,325 +0,0 @@
package starnet
import (
"bytes"
"context"
"encoding/binary"
"errors"
"fmt"
"os"
"sync"
"time"
)
var ErrDeadlineExceeded error = errors.New("deadline exceeded")
// 识别头
var header = []byte{11, 27, 19, 96, 12, 25, 02, 20}
// MsgQueue 为基本的信息单位
type MsgQueue struct {
ID uint16
Msg []byte
Conn interface{}
}
// StarQueue 为流数据中的消息队列分发
type StarQueue struct {
maxLength uint32
count int64
Encode bool
msgID uint16
msgPool chan MsgQueue
unFinMsg sync.Map
lastID int //= -1
ctx context.Context
cancel context.CancelFunc
duration time.Duration
EncodeFunc func([]byte) []byte
DecodeFunc func([]byte) []byte
//restoreMu sync.Mutex
}
func NewQueueCtx(ctx context.Context, count int64, maxMsgLength uint32) *StarQueue {
var q StarQueue
q.Encode = false
q.count = count
q.maxLength = maxMsgLength
q.msgPool = make(chan MsgQueue, count)
if ctx == nil {
q.ctx, q.cancel = context.WithCancel(context.Background())
} else {
q.ctx, q.cancel = context.WithCancel(ctx)
}
q.duration = 0
return &q
}
func NewQueueWithCount(count int64) *StarQueue {
return NewQueueCtx(nil, count, 0)
}
// NewQueue 建立一个新消息队列
func NewQueue() *StarQueue {
return NewQueueWithCount(32)
}
// Uint32ToByte 4位uint32转byte
func Uint32ToByte(src uint32) []byte {
res := make([]byte, 4)
res[3] = uint8(src)
res[2] = uint8(src >> 8)
res[1] = uint8(src >> 16)
res[0] = uint8(src >> 24)
return res
}
// ByteToUint32 byte转4位uint32
func ByteToUint32(src []byte) uint32 {
var res uint32
buffer := bytes.NewBuffer(src)
binary.Read(buffer, binary.BigEndian, &res)
return res
}
// Uint16ToByte 2位uint16转byte
func Uint16ToByte(src uint16) []byte {
res := make([]byte, 2)
res[1] = uint8(src)
res[0] = uint8(src >> 8)
return res
}
// ByteToUint16 用于byte转uint16
func ByteToUint16(src []byte) uint16 {
var res uint16
buffer := bytes.NewBuffer(src)
binary.Read(buffer, binary.BigEndian, &res)
return res
}
// BuildMessage 生成编码后的信息用于发送
func (q *StarQueue) BuildMessage(src []byte) []byte {
var buff bytes.Buffer
q.msgID++
if q.Encode {
src = q.EncodeFunc(src)
}
length := uint32(len(src))
buff.Write(header)
buff.Write(Uint32ToByte(length))
buff.Write(Uint16ToByte(q.msgID))
buff.Write(src)
return buff.Bytes()
}
// BuildHeader 生成编码后的Header用于发送
func (q *StarQueue) BuildHeader(length uint32) []byte {
var buff bytes.Buffer
q.msgID++
buff.Write(header)
buff.Write(Uint32ToByte(length))
buff.Write(Uint16ToByte(q.msgID))
return buff.Bytes()
}
type unFinMsg struct {
ID uint16
LengthRecv uint32
// HeaderMsg 信息头，应当为14位：8位识别码+4位长度码+2位id
HeaderMsg []byte
RecvMsg []byte
}
func (q *StarQueue) push2list(msg MsgQueue) {
q.msgPool <- msg
}
// ParseMessage 用于解析收到的msg信息
func (q *StarQueue) ParseMessage(msg []byte, conn interface{}) error {
return q.parseMessage(msg, conn)
}
// parseMessage 用于解析收到的msg信息
func (q *StarQueue) parseMessage(msg []byte, conn interface{}) error {
tmp, ok := q.unFinMsg.Load(conn)
if ok { //存在未完成的信息
lastMsg := tmp.(*unFinMsg)
headerLen := len(lastMsg.HeaderMsg)
if headerLen < 14 { //未完成头标题
//传输的数据不能填充header头
if len(msg) < 14-headerLen {
//加入header头并退出
lastMsg.HeaderMsg = bytesMerge(lastMsg.HeaderMsg, msg)
q.unFinMsg.Store(conn, lastMsg)
return nil
}
//获取14字节完整的header
header := msg[0 : 14-headerLen]
lastMsg.HeaderMsg = bytesMerge(lastMsg.HeaderMsg, header)
//检查收到的header是否为认证header
//若不是，丢弃并重新来过
if !checkHeader(lastMsg.HeaderMsg[0:8]) {
q.unFinMsg.Delete(conn)
if len(msg) == 0 {
return nil
}
return q.parseMessage(msg, conn)
}
//获得本数据包长度
lastMsg.LengthRecv = ByteToUint32(lastMsg.HeaderMsg[8:12])
if q.maxLength != 0 && lastMsg.LengthRecv > q.maxLength {
q.unFinMsg.Delete(conn)
return fmt.Errorf("msg length is %d ,too large than %d", lastMsg.LengthRecv, q.maxLength)
}
//获得本数据包ID
lastMsg.ID = ByteToUint16(lastMsg.HeaderMsg[12:14])
//存入列表
q.unFinMsg.Store(conn, lastMsg)
msg = msg[14-headerLen:]
if uint32(len(msg)) < lastMsg.LengthRecv {
lastMsg.RecvMsg = msg
q.unFinMsg.Store(conn, lastMsg)
return nil
}
if uint32(len(msg)) >= lastMsg.LengthRecv {
lastMsg.RecvMsg = msg[0:lastMsg.LengthRecv]
if q.Encode {
lastMsg.RecvMsg = q.DecodeFunc(lastMsg.RecvMsg)
}
msg = msg[lastMsg.LengthRecv:]
storeMsg := MsgQueue{
ID: lastMsg.ID,
Msg: lastMsg.RecvMsg,
Conn: conn,
}
//q.restoreMu.Lock()
q.push2list(storeMsg)
//q.restoreMu.Unlock()
q.unFinMsg.Delete(conn)
return q.parseMessage(msg, conn)
}
} else {
lastID := int(lastMsg.LengthRecv) - len(lastMsg.RecvMsg)
if lastID < 0 {
q.unFinMsg.Delete(conn)
return q.parseMessage(msg, conn)
}
if len(msg) >= lastID {
lastMsg.RecvMsg = bytesMerge(lastMsg.RecvMsg, msg[0:lastID])
if q.Encode {
lastMsg.RecvMsg = q.DecodeFunc(lastMsg.RecvMsg)
}
storeMsg := MsgQueue{
ID: lastMsg.ID,
Msg: lastMsg.RecvMsg,
Conn: conn,
}
q.push2list(storeMsg)
q.unFinMsg.Delete(conn)
if len(msg) == lastID {
return nil
}
msg = msg[lastID:]
return q.parseMessage(msg, conn)
}
lastMsg.RecvMsg = bytesMerge(lastMsg.RecvMsg, msg)
q.unFinMsg.Store(conn, lastMsg)
return nil
}
}
if len(msg) == 0 {
return nil
}
var start int
if start = searchHeader(msg); start == -1 {
return errors.New("data format error")
}
msg = msg[start:]
lastMsg := unFinMsg{}
q.unFinMsg.Store(conn, &lastMsg)
return q.parseMessage(msg, conn)
}
func checkHeader(msg []byte) bool {
if len(msg) != 8 {
return false
}
for k, v := range msg {
if v != header[k] {
return false
}
}
return true
}
func searchHeader(msg []byte) int {
if len(msg) < 8 {
return 0
}
for k, v := range msg {
find := 0
if v == header[0] {
for k2, v2 := range header {
if msg[k+k2] == v2 {
find++
} else {
break
}
}
if find == 8 {
return k
}
}
}
return -1
}
func bytesMerge(src ...[]byte) []byte {
var buff bytes.Buffer
for _, v := range src {
buff.Write(v)
}
return buff.Bytes()
}
// Restore 获取收到的信息
func (q *StarQueue) Restore() (MsgQueue, error) {
if q.duration.Seconds() == 0 {
q.duration = 86400 * time.Second
}
for {
select {
case <-q.ctx.Done():
return MsgQueue{}, errors.New("Stoped By External Function Call")
case <-time.After(q.duration):
if q.duration != 0 {
return MsgQueue{}, ErrDeadlineExceeded
}
case data, ok := <-q.msgPool:
if !ok {
return MsgQueue{}, os.ErrClosed
}
return data, nil
}
}
}
// RestoreOne 获取收到的一个信息
// 兼容性修改
func (q *StarQueue) RestoreOne() (MsgQueue, error) {
return q.Restore()
}
// Stop 立即停止Restore
func (q *StarQueue) Stop() {
q.cancel()
}
// RestoreDuration Restore最大超时时间
func (q *StarQueue) RestoreDuration(tm time.Duration) {
q.duration = tm
}
func (q *StarQueue) RestoreChan() <-chan MsgQueue {
return q.msgPool
}

42
que_test.go
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@ -1,42 +0,0 @@
package starnet
import (
"fmt"
"testing"
"time"
)
func Test_QueSpeed(t *testing.T) {
que := NewQueueWithCount(0)
stop := make(chan struct{}, 1)
que.RestoreDuration(time.Second * 10)
var count int64
go func() {
for {
select {
case <-stop:
//fmt.Println(count)
return
default:
}
_, err := que.RestoreOne()
if err == nil {
count++
}
}
}()
cp := 0
stoped := time.After(time.Second * 10)
data := que.BuildMessage([]byte("hello"))
for {
select {
case <-stoped:
fmt.Println(count, cp)
stop <- struct{}{}
return
default:
que.ParseMessage(data, "lala")
cp++
}
}
}
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