422 lines
8.1 KiB
Go
422 lines
8.1 KiB
Go
package cli
|
||
|
||
import (
|
||
"bufio"
|
||
"fmt"
|
||
"log"
|
||
"net"
|
||
"os"
|
||
"strconv"
|
||
"strings"
|
||
"sync"
|
||
"time"
|
||
)
|
||
|
||
type Client struct {
|
||
wlock sync.Mutex // write lock
|
||
rlock sync.Mutex // read lock
|
||
|
||
addr string // host:port
|
||
conn net.Conn // socket conn
|
||
createTime time.Time // client create time
|
||
groupid string // client group id
|
||
|
||
subFun map[string]func(v string) // subscribe topic and callback function
|
||
timerFun map[string]func() // subscribe timer amd callback function
|
||
|
||
chSend chan []string // chan of send message
|
||
chReceive chan []string // chan of receive message
|
||
timerReceive chan []string // chan of timer
|
||
}
|
||
|
||
func Create(addr string, groupid string) (*Client, error) {
|
||
conn, err := net.Dial("tcp", addr)
|
||
if err != nil {
|
||
return &Client{}, err
|
||
}
|
||
|
||
client := Client{
|
||
wlock: sync.Mutex{},
|
||
rlock: sync.Mutex{},
|
||
addr: addr,
|
||
conn: conn,
|
||
groupid: groupid,
|
||
createTime: time.Now(),
|
||
|
||
subFun: make(map[string]func(v string)),
|
||
timerFun: make(map[string]func()),
|
||
chSend: make(chan []string, 100),
|
||
chReceive: make(chan []string, 100),
|
||
timerReceive: make(chan []string, 100),
|
||
}
|
||
|
||
conn.Write([]byte("groupid " + groupid + "\r\n"))
|
||
client.init()
|
||
return &client, err
|
||
}
|
||
|
||
func (c *Client) reconn() (err error) {
|
||
for n := 1; n < 10; n++ {
|
||
conn, err := net.Dial("tcp", c.addr)
|
||
if err != nil {
|
||
log.Println("reconn", err)
|
||
time.Sleep(time.Second * 3)
|
||
continue
|
||
} else if err == nil {
|
||
c.conn = conn
|
||
conn.Write([]byte("groupid " + c.groupid + "\r\n"))
|
||
go c.receive()
|
||
|
||
// 重新订阅
|
||
for topic, _ := range c.subFun {
|
||
c.subscribes(topic)
|
||
}
|
||
for topic, _ := range c.timerFun {
|
||
c.timer(topic)
|
||
}
|
||
break
|
||
}
|
||
}
|
||
return
|
||
}
|
||
|
||
func (c *Client) init() {
|
||
// 消费 topic 消息
|
||
go func() {
|
||
for {
|
||
select {
|
||
case vs := <-c.chReceive:
|
||
fun := c.subFun[vs[1]]
|
||
if fun == nil {
|
||
log.Println("topic received, nothing to do", vs[1], vs[2])
|
||
continue
|
||
}
|
||
fun(vs[2])
|
||
case vs := <-c.timerReceive:
|
||
fun := c.timerFun[vs[1]]
|
||
if fun == nil {
|
||
log.Println("timer received, nothing to do", vs[1])
|
||
continue
|
||
}
|
||
fun()
|
||
}
|
||
|
||
}
|
||
}()
|
||
|
||
go c.receive()
|
||
}
|
||
|
||
func (c *Client) Subscribe(topic string, fun func(v string)) {
|
||
c.subFun[topic] = fun
|
||
c.subscribes(topic)
|
||
}
|
||
|
||
/*
|
||
---
|
||
ping
|
||
---
|
||
*/
|
||
func (c *Client) ping() {
|
||
c.send("ping")
|
||
}
|
||
|
||
// -------------------------------------- pub-sub --------------------------------------
|
||
/*
|
||
send topic message :
|
||
---
|
||
*3
|
||
$7
|
||
message
|
||
$8
|
||
my-topic
|
||
$24
|
||
{username:xx,mobile:xxx}
|
||
---
|
||
*/
|
||
func (c *Client) Publish(topic string, message string) error {
|
||
c.send("publish", topic, message)
|
||
return nil
|
||
}
|
||
|
||
func (c *Client) Daly(topic string, message string, daly int) error {
|
||
c.send("daly", topic, message, strconv.Itoa(daly))
|
||
return nil
|
||
}
|
||
|
||
/*func (c *Client) Timer(topic string, expr string, fun func()) {
|
||
c.timerFun[topic] = fun
|
||
c.send("timer", topic, expr, "x")
|
||
}*/
|
||
func (c *Client) Timer(topic string, fun func()) {
|
||
c.timerFun[topic] = fun
|
||
c.send("timer", topic)
|
||
}
|
||
func (c *Client) TimerSingle(topic string, expr string, fun func()) {
|
||
c.timerFun[topic] = fun
|
||
c.send("timer", topic, expr, "a")
|
||
}
|
||
|
||
// todo: save client timer‘s info
|
||
func (c *Client) timer(topic string) {
|
||
c.send("timer", topic)
|
||
}
|
||
|
||
// send cmd
|
||
func (c *Client) Cmd(cmd string) {
|
||
c.send("cmd", cmd)
|
||
}
|
||
|
||
func (c *Client) Close() {
|
||
c.conn.Close()
|
||
}
|
||
|
||
/*
|
||
// subscribe topic
|
||
---
|
||
subscribe x y z
|
||
---
|
||
*/
|
||
func (c *Client) subscribes(topics ...string) error {
|
||
if len(topics) == 0 {
|
||
return nil
|
||
}
|
||
|
||
messages := "subscribe"
|
||
for _, topic := range topics {
|
||
messages += " " + topic
|
||
}
|
||
c.send(messages)
|
||
return nil
|
||
}
|
||
|
||
/*
|
||
send socket message :
|
||
if len(vs) equal 1 will send message `vs[0] + "\r\n"`
|
||
else if len(vs) gt 1 will send message `* + len(vs)+ "\r\n" +"$"+ len(vs[n])+ "\r\n" + vs[n] + "\r\n" ...`
|
||
*/
|
||
func (c *Client) send(vs ...string) (err error) {
|
||
//chSend <- vs
|
||
c.wlock.Lock()
|
||
defer c.wlock.Unlock()
|
||
a:
|
||
if len(vs) == 1 {
|
||
_, err = c.conn.Write([]byte(vs[0] + "\r\n"))
|
||
} else if len(vs) > 1 {
|
||
data := "*" + strconv.Itoa(len(vs)) + "\r\n"
|
||
for _, v := range vs {
|
||
data += "$" + strconv.Itoa(len(v)) + "\r\n"
|
||
data += v + "\r\n"
|
||
}
|
||
_, err = c.conn.Write([]byte(data))
|
||
}
|
||
if err != nil {
|
||
log.Println(err)
|
||
time.Sleep(time.Second * 3)
|
||
goto a
|
||
}
|
||
|
||
return err
|
||
}
|
||
|
||
func (c *Client) receive() {
|
||
c.rlock.Lock()
|
||
defer c.rlock.Unlock()
|
||
|
||
r := bufio.NewReader(c.conn)
|
||
for {
|
||
v, _, err := r.ReadLine()
|
||
if err != nil {
|
||
log.Println("receive error and reconn: ", err)
|
||
if err = c.reconn(); err == nil {
|
||
r = bufio.NewReader(c.conn)
|
||
} else {
|
||
|
||
}
|
||
time.Sleep(time.Second * 3)
|
||
continue
|
||
} else if len(v) == 0 {
|
||
log.Println("receive empty")
|
||
continue
|
||
}
|
||
|
||
switch string(v[0:1]) {
|
||
case "*": // 订阅消息
|
||
// 数据行数
|
||
vlen, err := strconv.Atoi(string(v[1:]))
|
||
if err != nil {
|
||
log.Println("receive parse len error: ", err, string(v))
|
||
continue
|
||
}
|
||
|
||
// 读取完整数据
|
||
vs := make([]string, 0)
|
||
for i := 0; i < vlen; i++ {
|
||
r.ReadLine() // $x
|
||
v, _, err = r.ReadLine()
|
||
if err != nil {
|
||
log.Println("receive parse v error: ", err)
|
||
}
|
||
vs = append(vs, string(v))
|
||
}
|
||
|
||
if len(vs) == 3 && strings.EqualFold(vs[0], "message") {
|
||
c.chReceive <- vs
|
||
continue
|
||
}
|
||
if len(vs) == 2 && strings.EqualFold(vs[0], "timer") {
|
||
c.timerReceive <- vs
|
||
continue
|
||
}
|
||
/*if len(vs) == 2 && strings.EqualFold(vs[0], "daly") {
|
||
c.dalyFun[vs[1]]()
|
||
delete(c.dalyFun, vs[1])
|
||
continue
|
||
}*/
|
||
|
||
continue
|
||
case "+": // +pong, +xxx
|
||
case "-":
|
||
fmt.Println("error:", string(v))
|
||
case ":":
|
||
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
// -------------------------------------- k-v --------------------------------------
|
||
/*
|
||
*3
|
||
$3
|
||
set
|
||
$n
|
||
x
|
||
$m
|
||
xx
|
||
*/
|
||
func (c *Client) set(key string, value interface{}) error {
|
||
|
||
return nil
|
||
}
|
||
|
||
func (c *Client) get(key string) string {
|
||
|
||
return ""
|
||
}
|
||
|
||
// -------------------------------------- hm --------------------------------------
|
||
|
||
// ==============================================================================
|
||
|
||
var reconnect = 0
|
||
|
||
// client 命令行程序
|
||
func ClientRun(addr string) {
|
||
conn, err := net.Dial("tcp", fmt.Sprintf("%s", addr))
|
||
|
||
for {
|
||
if err != nil {
|
||
log.Println(err)
|
||
time.Sleep(time.Second * 3)
|
||
conn, err = net.Dial("tcp", fmt.Sprintf("%s", addr))
|
||
continue
|
||
}
|
||
|
||
fmt.Println(fmt.Sprintf("had connected server: %s", addr))
|
||
break
|
||
}
|
||
|
||
defer func() {
|
||
if reconnect == 1 {
|
||
conn.Close()
|
||
ClientRun(addr)
|
||
}
|
||
}()
|
||
|
||
go clientRead(conn)
|
||
|
||
for {
|
||
inReader := bufio.NewReader(os.Stdin)
|
||
line, err := inReader.ReadString('\n')
|
||
if err != nil {
|
||
fmt.Println(err)
|
||
return
|
||
} else if reconnect == 1 {
|
||
return
|
||
}
|
||
|
||
line = strings.Trim(line, "\r\n")
|
||
line = strings.Trim(line, "\n")
|
||
line = strings.Trim(line, " ")
|
||
|
||
if strings.EqualFold(line, "") {
|
||
continue
|
||
} else if strings.EqualFold(line, ":exit") {
|
||
fmt.Println("exit!")
|
||
return
|
||
}
|
||
|
||
//fmt.Println("发送数据：" + line)
|
||
|
||
line = strings.ReplaceAll(line, " ", "")
|
||
parr := strings.Split(line, " ")
|
||
conn.Write([]byte("*" + strconv.Itoa(len(parr)) + "\r\n"))
|
||
for i := range parr {
|
||
conn.Write([]byte("$" + strconv.Itoa(len(parr[i])) + "\r\n"))
|
||
conn.Write([]byte(parr[i] + "\r\n"))
|
||
}
|
||
}
|
||
}
|
||
|
||
func clientRead(conn net.Conn) {
|
||
defer func() {
|
||
if r := recover(); r != nil {
|
||
fmt.Println("Recovered:", r)
|
||
}
|
||
reconnect = 1
|
||
}()
|
||
|
||
reader := bufio.NewReader(conn)
|
||
for {
|
||
rcmd := make([]string, 0)
|
||
line, _, err := reader.ReadLine()
|
||
if err != nil {
|
||
log.Println("connection error: ", err)
|
||
return
|
||
} else if len(line) == 0 {
|
||
continue
|
||
}
|
||
|
||
switch string(line[:1]) {
|
||
case "*":
|
||
n, _ := strconv.Atoi(string(line[1:]))
|
||
for i := 0; i < n; i++ {
|
||
reader.ReadLine()
|
||
v, _, _ := reader.ReadLine()
|
||
rcmd = append(rcmd, string(v))
|
||
}
|
||
case "+":
|
||
rcmd = append(rcmd, string(line))
|
||
case "-":
|
||
rcmd = append(rcmd, string(line))
|
||
case ":":
|
||
rcmd = append(rcmd, string(line))
|
||
case "h":
|
||
if strings.EqualFold(string(line), "help-start") {
|
||
for {
|
||
v, _, _ := reader.ReadLine()
|
||
if strings.EqualFold(string(v), "help-end") {
|
||
break
|
||
}
|
||
rcmd = append(rcmd, string(v)+"\r\n")
|
||
}
|
||
}
|
||
default:
|
||
rcmd = append(rcmd, string(line))
|
||
}
|
||
|
||
fmt.Println(">", strings.Join(rcmd, " "))
|
||
}
|
||
}
|