/
client.go
118 lines (97 loc) · 1.82 KB
/
client.go
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package internal
import (
"errors"
"github.com/go-well/spider/silk"
"net"
"sync"
"time"
)
type Handler func(c *Client, p *silk.Package)
type Handlers []Handler
var handlers = map[silk.Type]Handlers{}
//
var clients sync.Map
func RegisterHandler(tp silk.Type, handler Handler) {
hs, ok := handlers[tp]
if !ok {
hs = Handlers{handler}
handlers[tp] = hs
} else {
handlers[tp] = append(hs, handler)
}
}
type Client struct {
conn net.Conn
parser silk.Parser
files sync.Map
tunnels sync.Map
tasks sync.Map
requests sync.Map
requestIndex uint16
topics sync.Map
}
func (c *Client) handle(p *silk.Package) {
//先处理会话
if p.Id > 0 {
if ch, ok := c.requests.LoadAndDelete(p.Id); ok {
cc := ch.(chan *silk.Package)
cc <- p
}
}
if hs, ok := handlers[p.Type]; ok {
for _, h := range hs {
h(c, p)
}
}
}
func (c *Client) run() {
for {
var buf = make([]byte, 1024)
n, err := c.conn.Read(buf)
if err != nil {
break
}
packs, err := c.parser.Parse(buf[:n])
for _, p := range packs {
c.handle(p)
}
if err != nil {
//print
}
}
}
func (c *Client) Send(p *silk.Package) error {
buf := p.Encode()
_, err := c.conn.Write(buf)
return err
}
func (c *Client) Ask(p *silk.Package) (*silk.Package, error) {
//分配ID
c.requestIndex++
if c.requestIndex == 0 {
c.requestIndex++
}
id := c.requestIndex
p.Id = id
err := c.Send(p)
if err != nil {
return nil, err
}
//等待结果和超时
ch := make(chan *silk.Package)
c.requests.Store(id, ch)
select {
case p := <-ch:
if p.Fail {
return nil, errors.New(string(p.Data))
}
return p, nil
case <-time.After(time.Minute):
return nil, errors.New("timeout")
}
}
func (c *Client) Close() error {
//TODO 判断是否已经关闭
//TODO 关闭文件,关闭通道,关闭task
return c.conn.Close()
}