145 lines
3.7 KiB
Go
145 lines
3.7 KiB
Go
/*
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* Copyright 2020 The Dragonfly Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package server
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import (
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"context"
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"sync"
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"d7y.io/dragonfly/v2/internal/dferrors"
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logger "d7y.io/dragonfly/v2/internal/dflog"
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"d7y.io/dragonfly/v2/pkg/rpc"
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"d7y.io/dragonfly/v2/pkg/rpc/base"
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"d7y.io/dragonfly/v2/pkg/rpc/cdnsystem"
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"d7y.io/dragonfly/v2/pkg/safe"
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"d7y.io/dragonfly/v2/pkg/util/net/iputils"
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"go.uber.org/zap"
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"google.golang.org/grpc"
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"google.golang.org/grpc/peer"
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)
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func init() {
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// set register with server implementation.
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rpc.SetRegister(func(s *grpc.Server, impl interface{}) {
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cdnsystem.RegisterSeederServer(s, &proxy{server: impl.(SeederServer)})
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})
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}
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// see cdnsystem.SeederServer
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type SeederServer interface {
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ObtainSeeds(context.Context, *cdnsystem.SeedRequest, chan<- *cdnsystem.PieceSeed) error
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GetPieceTasks(context.Context, *base.PieceTaskRequest) (*base.PiecePacket, error)
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}
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type proxy struct {
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server SeederServer
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cdnsystem.UnimplementedSeederServer
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}
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func (p *proxy) ObtainSeeds(sr *cdnsystem.SeedRequest, stream cdnsystem.Seeder_ObtainSeedsServer) (err error) {
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ctx, cancel := context.WithCancel(stream.Context())
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defer cancel()
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peerAddr := "unknown"
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if pe, ok := peer.FromContext(ctx); ok {
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peerAddr = pe.Addr.String()
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}
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logger.Infof("trigger obtain seed for taskID: %s, url: %s, from: %s", sr.TaskId, sr.Url, peerAddr)
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errChan := make(chan error, 10)
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psc := make(chan *cdnsystem.PieceSeed, 4)
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once := new(sync.Once)
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closePsc := func() {
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once.Do(func() {
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close(psc)
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})
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}
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defer closePsc()
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go call(ctx, psc, p, sr, errChan)
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go send(psc, closePsc, stream, errChan)
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if err = <-errChan; dferrors.IsEndOfStream(err) {
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err = nil
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}
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return
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}
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func (p *proxy) GetPieceTasks(ctx context.Context, ptr *base.PieceTaskRequest) (*base.PiecePacket, error) {
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return p.server.GetPieceTasks(ctx, ptr)
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}
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func send(psc chan *cdnsystem.PieceSeed, closePsc func(), stream cdnsystem.Seeder_ObtainSeedsServer, errChan chan error) {
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err := safe.Call(func() {
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defer closePsc()
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for v := range psc {
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if err := stream.Send(v); err != nil {
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errChan <- err
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return
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}
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if v.Done {
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break
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}
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}
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errChan <- dferrors.ErrEndOfStream
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})
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if err != nil {
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errChan <- err
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}
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}
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func call(ctx context.Context, psc chan *cdnsystem.PieceSeed, p *proxy, sr *cdnsystem.SeedRequest, errChan chan error) {
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err := safe.Call(func() {
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if err := p.server.ObtainSeeds(ctx, sr, psc); err != nil {
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errChan <- err
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}
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})
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if err != nil {
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errChan <- err
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}
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}
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func StatSeedStart(taskID, url string) {
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logger.StatSeedLogger.Info("trigger seed making",
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zap.String("taskID", taskID),
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zap.String("url", url),
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zap.String("seederIp", iputils.HostIP),
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zap.String("seederName", iputils.HostName))
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}
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func StatSeedFinish(taskID, url string, success bool, err error, beginTime, endTime int, traffic, contentLength int64) {
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logger.StatSeedLogger.Info("seed making finish",
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zap.Bool("success", success),
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zap.String("taskID", taskID),
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zap.String("url", url),
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zap.String("seederIp", iputils.HostIP),
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zap.String("seederName", iputils.HostName),
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zap.Int("beginTime", beginTime),
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zap.Int("endTime", endTime),
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zap.Int64("traffic", traffic),
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zap.Int64("contentLength", contentLength),
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zap.Error(err))
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}
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