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go style task engine

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This commit is contained in:
Darien Raymond 2016-12-29 22:17:12 +01:00
parent bdfb879963
commit 690d71b16e
No known key found for this signature in database
GPG Key ID: 7251FFA14BB18169
4 changed files with 100 additions and 132 deletions
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30
common/signal/exec.go Normal file
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@ -0,0 +1,30 @@
package signal
func executeAndFulfill(f func() error, done chan<- error) {
err := f()
if err != nil {
done <- err
}
close(done)
}
func ExecuteAsync(f func() error) <-chan error {
done := make(chan error, 1)
go executeAndFulfill(f, done)
return done
}
func ErrorOrFinish2(c1, c2 <-chan error) error {
select {
case err, failed := <-c1:
if failed {
return err
}
return <-c2
case err, failed := <-c2:
if failed {
return err
}
return <-c1
}
}

41
common/task/task.go
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@ -1,41 +0,0 @@
package task
import (
"sync"
)
type Task interface {
Execute() error
}
type ParallelExecutor struct {
sync.Mutex
tasks sync.WaitGroup
errors []error
}
func (pe *ParallelExecutor) track(err error) {
if err == nil {
return
}
pe.Lock()
pe.errors = append(pe.errors, err)
pe.Unlock()
}
func (pe *ParallelExecutor) Execute(task Task) {
pe.tasks.Add(1)
go func() {
pe.track(task.Execute())
pe.tasks.Done()
}()
}
func (pe *ParallelExecutor) Wait() {
pe.tasks.Wait()
}
func (pe *ParallelExecutor) Errors() []error {
return pe.errors
}

27
proxy/dokodemo/dokodemo.go
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@ -11,6 +11,7 @@ import (
"v2ray.com/core/common/log"
v2net "v2ray.com/core/common/net"
"v2ray.com/core/common/serial"
"v2ray.com/core/common/signal"
"v2ray.com/core/proxy"
"v2ray.com/core/transport/internet"
"v2ray.com/core/transport/internet/udp"
@ -168,35 +169,37 @@ func (v *DokodemoDoor) HandleTCPConnection(conn internet.Connection) {
})
defer ray.InboundOutput().Release()
var wg sync.WaitGroup
reader := v2net.NewTimeOutReader(v.config.Timeout, conn)
defer reader.Release()
wg.Add(1)
go func() {
requestDone := signal.ExecuteAsync(func() error {
defer ray.InboundInput().Close()
v2reader := buf.NewReader(reader)
defer v2reader.Release()
if err := buf.PipeUntilEOF(v2reader, ray.InboundInput()); err != nil {
log.Info("Dokodemo: Failed to transport all TCP request: ", err)
return err
}
wg.Done()
ray.InboundInput().Close()
}()
wg.Add(1)
go func() {
return nil
})
responseDone := signal.ExecuteAsync(func() error {
defer ray.InboundOutput().Release()
v2writer := buf.NewWriter(conn)
defer v2writer.Release()
if err := buf.PipeUntilEOF(ray.InboundOutput(), v2writer); err != nil {
log.Info("Dokodemo: Failed to transport all TCP response: ", err)
return err
}
wg.Done()
}()
return nil
})
wg.Wait()
signal.ErrorOrFinish2(requestDone, responseDone)
}
type Factory struct{}

134
proxy/vmess/inbound/inbound.go
View File

@ -15,7 +15,7 @@ import (
v2net "v2ray.com/core/common/net"
"v2ray.com/core/common/protocol"
"v2ray.com/core/common/serial"
"v2ray.com/core/common/task"
"v2ray.com/core/common/signal"
"v2ray.com/core/common/uuid"
"v2ray.com/core/proxy"
"v2ray.com/core/proxy/vmess"
@ -24,66 +24,6 @@ import (
"v2ray.com/core/transport/ray"
)
type requestProcessor struct {
session *encoding.ServerSession
request *protocol.RequestHeader
input io.Reader
output ray.OutputStream
}
func (r *requestProcessor) Execute() error {
defer r.output.Close()
bodyReader := r.session.DecodeRequestBody(r.request, r.input)
defer bodyReader.Release()
if err := buf.PipeUntilEOF(bodyReader, r.output); err != nil {
log.Debug("VMess|Inbound: Error when sending data to outbound: ", err)
return err
}
return nil
}
type responseProcessor struct {
session *encoding.ServerSession
request *protocol.RequestHeader
response *protocol.ResponseHeader
input ray.InputStream
output io.Writer
}
func (r *responseProcessor) Execute() error {
defer r.input.Release()
r.session.EncodeResponseHeader(r.response, r.output)
bodyWriter := r.session.EncodeResponseBody(r.request, r.output)
// Optimize for small response packet
if data, err := r.input.Read(); err == nil {
if err := bodyWriter.Write(data); err != nil {
return err
}
if bufferedWriter, ok := r.output.(*bufio.BufferedWriter); ok {
bufferedWriter.SetBuffered(false)
}
if err := buf.PipeUntilEOF(r.input, bodyWriter); err != nil {
log.Debug("VMess|Inbound: Error when sending data to downstream: ", err)
return err
}
}
if r.request.Option.Has(protocol.RequestOptionChunkStream) {
if err := bodyWriter.Write(buf.NewLocal(8)); err != nil {
return err
}
}
return nil
}
type userByEmail struct {
sync.RWMutex
cache map[string]*protocol.User
@ -190,6 +130,50 @@ func (v *VMessInboundHandler) Start() error {
return nil
}
func transferRequest(session *encoding.ServerSession, request *protocol.RequestHeader, input io.Reader, output ray.OutputStream) error {
defer output.Close()
bodyReader := session.DecodeRequestBody(request, input)
defer bodyReader.Release()
if err := buf.PipeUntilEOF(bodyReader, output); err != nil {
log.Debug("VMess|Inbound: Error when sending data to outbound: ", err)
return err
}
return nil
}
func transferResponse(session *encoding.ServerSession, request *protocol.RequestHeader, response *protocol.ResponseHeader, input ray.InputStream, output io.Writer) error {
defer input.Release()
session.EncodeResponseHeader(response, output)
bodyWriter := session.EncodeResponseBody(request, output)
// Optimize for small response packet
if data, err := input.Read(); err == nil {
if err := bodyWriter.Write(data); err != nil {
return err
}
if bufferedWriter, ok := output.(*bufio.BufferedWriter); ok {
bufferedWriter.SetBuffered(false)
}
if err := buf.PipeUntilEOF(input, bodyWriter); err != nil {
log.Debug("VMess|Inbound: Error when sending data to downstream: ", err)
return err
}
}
if request.Option.Has(protocol.RequestOptionChunkStream) {
if err := bodyWriter.Write(buf.NewLocal(8)); err != nil {
return err
}
}
return nil
}
func (v *VMessInboundHandler) HandleConnection(connection internet.Connection) {
defer connection.Close()
@ -242,12 +226,8 @@ func (v *VMessInboundHandler) HandleConnection(connection internet.Connection) {
connReader.SetTimeOut(userSettings.PayloadReadTimeout)
reader.SetBuffered(false)
var executor task.ParallelExecutor
executor.Execute(&requestProcessor{
session: session,
request: request,
input: reader,
output: input,
requestDone := signal.ExecuteAsync(func() error {
return transferRequest(session, request, reader, input)
})
writer := bufio.NewWriter(connection)
@ -261,23 +241,19 @@ func (v *VMessInboundHandler) HandleConnection(connection internet.Connection) {
response.Option.Set(protocol.ResponseOptionConnectionReuse)
}
executor.Execute(&responseProcessor{
session: session,
request: request,
response: response,
input: output,
output: writer,
responseDone := signal.ExecuteAsync(func() error {
return transferResponse(session, request, response, output, writer)
})
executor.Wait()
err = signal.ErrorOrFinish2(requestDone, responseDone)
if err != nil {
connection.SetReusable(false)
return
}
if err := writer.Flush(); err != nil {
connection.SetReusable(false)
}
errors := executor.Errors()
if len(errors) > 0 {
connection.SetReusable(false)
return
}
}