frp/client/proxy/proxy_manager.go

159 lines
3.5 KiB
Go

// Copyright 2023 The frp Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package proxy
import (
"context"
"fmt"
"net"
"reflect"
"sync"
"github.com/samber/lo"
"github.com/fatedier/frp/client/event"
v1 "github.com/fatedier/frp/pkg/config/v1"
"github.com/fatedier/frp/pkg/msg"
"github.com/fatedier/frp/pkg/transport"
"github.com/fatedier/frp/pkg/util/xlog"
)
type Manager struct {
proxies map[string]*Wrapper
msgTransporter transport.MessageTransporter
closed bool
mu sync.RWMutex
clientCfg *v1.ClientCommonConfig
ctx context.Context
}
func NewManager(
ctx context.Context,
clientCfg *v1.ClientCommonConfig,
msgTransporter transport.MessageTransporter,
) *Manager {
return &Manager{
proxies: make(map[string]*Wrapper),
msgTransporter: msgTransporter,
closed: false,
clientCfg: clientCfg,
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
}
return pm.msgTransporter.Send(m)
}
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 []v1.ProxyConfigurer) {
xl := xlog.FromContextSafe(pm.ctx)
pxyCfgsMap := lo.KeyBy(pxyCfgs, func(c v1.ProxyConfigurer) string {
return c.GetBaseConfig().Name
})
pm.mu.Lock()
defer pm.mu.Unlock()
delPxyNames := make([]string, 0)
for name, pxy := range pm.proxies {
del := false
cfg, ok := pxyCfgsMap[name]
if !ok || !reflect.DeepEqual(pxy.Cfg, cfg) {
del = true
}
if del {
delPxyNames = append(delPxyNames, name)
delete(pm.proxies, name)
pxy.Stop()
}
}
if len(delPxyNames) > 0 {
xl.Info("proxy removed: %s", delPxyNames)
}
addPxyNames := make([]string, 0)
for _, cfg := range pxyCfgs {
name := cfg.GetBaseConfig().Name
if _, ok := pm.proxies[name]; !ok {
pxy := NewWrapper(pm.ctx, cfg, pm.clientCfg, pm.HandleEvent, pm.msgTransporter)
pm.proxies[name] = pxy
addPxyNames = append(addPxyNames, name)
pxy.Start()
}
}
if len(addPxyNames) > 0 {
xl.Info("proxy added: %s", addPxyNames)
}
}