mirror of https://github.com/fatedier/frp
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
120 lines
3.1 KiB
120 lines
3.1 KiB
// 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 transport
|
|
|
|
import (
|
|
"context"
|
|
"reflect"
|
|
"sync"
|
|
|
|
"github.com/fatedier/golib/errors"
|
|
|
|
"github.com/fatedier/frp/pkg/msg"
|
|
)
|
|
|
|
type MessageTransporter interface {
|
|
Send(msg.Message) error
|
|
// Recv(ctx context.Context, laneKey string, msgType string) (Message, error)
|
|
// Do will first send msg, then recv msg with the same laneKey and specified msgType.
|
|
Do(ctx context.Context, req msg.Message, laneKey, recvMsgType string) (msg.Message, error)
|
|
Dispatch(m msg.Message, laneKey string) bool
|
|
DispatchWithType(m msg.Message, msgType, laneKey string) bool
|
|
}
|
|
|
|
func NewMessageTransporter(sendCh chan msg.Message) MessageTransporter {
|
|
return &transporterImpl{
|
|
sendCh: sendCh,
|
|
registry: make(map[string]map[string]chan msg.Message),
|
|
}
|
|
}
|
|
|
|
type transporterImpl struct {
|
|
sendCh chan msg.Message
|
|
|
|
// First key is message type and second key is lane key.
|
|
// Dispatch will dispatch message to releated channel by its message type
|
|
// and lane key.
|
|
registry map[string]map[string]chan msg.Message
|
|
mu sync.RWMutex
|
|
}
|
|
|
|
func (impl *transporterImpl) Send(m msg.Message) error {
|
|
return errors.PanicToError(func() {
|
|
impl.sendCh <- m
|
|
})
|
|
}
|
|
|
|
func (impl *transporterImpl) Do(ctx context.Context, req msg.Message, laneKey, recvMsgType string) (msg.Message, error) {
|
|
ch := make(chan msg.Message, 1)
|
|
defer close(ch)
|
|
unregisterFn := impl.registerMsgChan(ch, laneKey, recvMsgType)
|
|
defer unregisterFn()
|
|
|
|
if err := impl.Send(req); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
select {
|
|
case <-ctx.Done():
|
|
return nil, ctx.Err()
|
|
case resp := <-ch:
|
|
return resp, nil
|
|
}
|
|
}
|
|
|
|
func (impl *transporterImpl) DispatchWithType(m msg.Message, msgType, laneKey string) bool {
|
|
var ch chan msg.Message
|
|
impl.mu.RLock()
|
|
byLaneKey, ok := impl.registry[msgType]
|
|
if ok {
|
|
ch = byLaneKey[laneKey]
|
|
}
|
|
impl.mu.RUnlock()
|
|
|
|
if ch == nil {
|
|
return false
|
|
}
|
|
|
|
if err := errors.PanicToError(func() {
|
|
ch <- m
|
|
}); err != nil {
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
func (impl *transporterImpl) Dispatch(m msg.Message, laneKey string) bool {
|
|
msgType := reflect.TypeOf(m).Elem().Name()
|
|
return impl.DispatchWithType(m, msgType, laneKey)
|
|
}
|
|
|
|
func (impl *transporterImpl) registerMsgChan(recvCh chan msg.Message, laneKey string, msgType string) (unregister func()) {
|
|
impl.mu.Lock()
|
|
byLaneKey, ok := impl.registry[msgType]
|
|
if !ok {
|
|
byLaneKey = make(map[string]chan msg.Message)
|
|
impl.registry[msgType] = byLaneKey
|
|
}
|
|
byLaneKey[laneKey] = recvCh
|
|
impl.mu.Unlock()
|
|
|
|
unregister = func() {
|
|
impl.mu.Lock()
|
|
delete(byLaneKey, laneKey)
|
|
impl.mu.Unlock()
|
|
}
|
|
return
|
|
}
|