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proxy_manager.go
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proxy_manager.go
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package proxy
import (
"context"
"fmt"
"net"
"sync"
"github.com/fatedier/golib/errors"
"github.com/fatedier/frp/client/event"
"github.com/fatedier/frp/pkg/config"
"github.com/fatedier/frp/pkg/msg"
"github.com/fatedier/frp/pkg/util/xlog"
)
type Manager struct {
sendCh chan (msg.Message)
proxies map[string]*Wrapper
closed bool
mu sync.RWMutex
clientCfg config.ClientCommonConf
// The UDP port that the server is listening on
serverUDPPort int
ctx context.Context
}
func NewManager(ctx context.Context, msgSendCh chan (msg.Message), clientCfg config.ClientCommonConf, serverUDPPort int) *Manager {
return &Manager{
sendCh: msgSendCh,
proxies: make(map[string]*Wrapper),
closed: false,
clientCfg: clientCfg,
serverUDPPort: serverUDPPort,
ctx: ctx,
}
}
func (pm *Manager) StartProxy(name string, remoteAddr string, serverRespErr string) error {
pm.mu.RLock()
pxy, ok := pm.proxies[name]
pm.mu.RUnlock()
if !ok {
return fmt.Errorf("proxy [%s] not found", name)
}
err := pxy.SetRunningStatus(remoteAddr, serverRespErr)
if err != nil {
return err
}
return nil
}
func (pm *Manager) Close() {
pm.mu.Lock()
defer pm.mu.Unlock()
for _, pxy := range pm.proxies {
pxy.Stop()
}
pm.proxies = make(map[string]*Wrapper)
}
func (pm *Manager) HandleWorkConn(name string, workConn net.Conn, m *msg.StartWorkConn) {
pm.mu.RLock()
pw, ok := pm.proxies[name]
pm.mu.RUnlock()
if ok {
pw.InWorkConn(workConn, m)
} else {
workConn.Close()
}
}
func (pm *Manager) HandleEvent(payload interface{}) error {
var m msg.Message
switch e := payload.(type) {
case *event.StartProxyPayload:
m = e.NewProxyMsg
case *event.CloseProxyPayload:
m = e.CloseProxyMsg
default:
return event.ErrPayloadType
}
err := errors.PanicToError(func() {
pm.sendCh <- m
})
return err
}
func (pm *Manager) GetAllProxyStatus() []*WorkingStatus {
ps := make([]*WorkingStatus, 0)
pm.mu.RLock()
defer pm.mu.RUnlock()
for _, pxy := range pm.proxies {
ps = append(ps, pxy.GetStatus())
}
return ps
}
func (pm *Manager) Reload(pxyCfgs map[string]config.ProxyConf) {
xl := xlog.FromContextSafe(pm.ctx)
pm.mu.Lock()
defer pm.mu.Unlock()
delPxyNames := make([]string, 0)
for name, pxy := range pm.proxies {
del := false
cfg, ok := pxyCfgs[name]
if !ok {
del = true
} else if !pxy.Cfg.Compare(cfg) {
del = true
}
if del {
delPxyNames = append(delPxyNames, name)
delete(pm.proxies, name)
pxy.Stop()
}
}
if len(delPxyNames) > 0 {
xl.Info("proxy removed: %v", delPxyNames)
}
addPxyNames := make([]string, 0)
for name, cfg := range pxyCfgs {
if _, ok := pm.proxies[name]; !ok {
pxy := NewWrapper(pm.ctx, cfg, pm.clientCfg, pm.HandleEvent, pm.serverUDPPort)
pm.proxies[name] = pxy
addPxyNames = append(addPxyNames, name)
pxy.Start()
}
}
if len(addPxyNames) > 0 {
xl.Info("proxy added: %v", addPxyNames)
}
}