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cdn.go
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cdn.go
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/*
* Copyright 2020 The Dragonfly 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 cdnsystem cdn server
package cdnsystem
import (
"context"
"fmt"
"runtime"
"d7y.io/dragonfly/v2/cdnsystem/config"
"d7y.io/dragonfly/v2/cdnsystem/plugins"
"d7y.io/dragonfly/v2/cdnsystem/rpcserver"
"d7y.io/dragonfly/v2/cdnsystem/supervisor/cdn"
"d7y.io/dragonfly/v2/cdnsystem/supervisor/cdn/storage"
"d7y.io/dragonfly/v2/cdnsystem/supervisor/gc"
"d7y.io/dragonfly/v2/cdnsystem/supervisor/progress"
"d7y.io/dragonfly/v2/cdnsystem/supervisor/task"
logger "d7y.io/dragonfly/v2/internal/dflog"
"d7y.io/dragonfly/v2/pkg/rpc"
"d7y.io/dragonfly/v2/pkg/rpc/cdnsystem/server"
"d7y.io/dragonfly/v2/pkg/rpc/manager"
managerclient "d7y.io/dragonfly/v2/pkg/rpc/manager/client"
"d7y.io/dragonfly/v2/pkg/util/net/iputils"
"github.com/pkg/errors"
"go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc"
"google.golang.org/grpc"
)
type Server struct {
config *config.Config
seedServer server.SeederServer
managerClient managerclient.Client
}
// New creates a brand new server instance.
func New(cfg *config.Config) (*Server, error) {
s := &Server{config: cfg}
if ok := storage.IsSupport(cfg.StorageMode); !ok {
return nil, fmt.Errorf("os %s is not support storage mode %s", runtime.GOOS, cfg.StorageMode)
}
if err := plugins.Initialize(cfg.Plugins); err != nil {
return nil, err
}
// Initialize progress manager
progressMgr, err := progress.NewManager()
if err != nil {
return nil, errors.Wrapf(err, "create progress manager")
}
// Initialize storage manager
storageMgr, ok := storage.Get(cfg.StorageMode)
if !ok {
return nil, fmt.Errorf("can not find storage pattern %s", cfg.StorageMode)
}
// Initialize CDN manager
cdnMgr, err := cdn.NewManager(cfg, storageMgr, progressMgr)
if err != nil {
return nil, errors.Wrapf(err, "create cdn manager")
}
// Initialize task manager
taskMgr, err := task.NewManager(cfg, cdnMgr, progressMgr)
if err != nil {
return nil, errors.Wrapf(err, "create task manager")
}
// Initialize storage manager
storageMgr.Initialize(taskMgr)
// Initialize storage manager
cdnSeedServer, err := rpcserver.NewCdnSeedServer(cfg, taskMgr)
if err != nil {
return nil, errors.Wrap(err, "create seedServer")
}
s.seedServer = cdnSeedServer
// Initialize manager client
if cfg.Manager.Addr != "" {
managerClient, err := managerclient.New(cfg.Manager.Addr)
if err != nil {
return nil, err
}
s.managerClient = managerClient
// Register to manager
if _, err := s.managerClient.UpdateCDN(&manager.UpdateCDNRequest{
SourceType: manager.SourceType_CDN_SOURCE,
HostName: iputils.HostName,
Ip: s.config.AdvertiseIP,
Port: int32(s.config.ListenPort),
DownloadPort: int32(s.config.DownloadPort),
Idc: s.config.Host.IDC,
Location: s.config.Host.Location,
CdnClusterId: uint64(s.config.Manager.CDNClusterID),
}); err != nil {
return nil, err
}
}
return s, nil
}
func (s *Server) Serve() (err error) {
defer func() {
if rec := recover(); rec != nil {
err = errors.New(fmt.Sprintf("%v", rec))
}
}()
// Start GC
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
err = gc.StartGC(ctx)
if err != nil {
return err
}
// Serve Keepalive
if s.managerClient != nil {
go func() {
logger.Info("start keepalive to manager")
s.managerClient.KeepAlive(s.config.Manager.KeepAlive.Interval, &manager.KeepAliveRequest{
HostName: iputils.HostName,
SourceType: manager.SourceType_CDN_SOURCE,
ClusterId: uint64(s.config.Manager.CDNClusterID),
})
}()
}
// Serve GRPC
var opts []grpc.ServerOption
if s.config.Options.Telemetry.Jaeger != "" {
opts = append(opts, grpc.ChainUnaryInterceptor(otelgrpc.UnaryServerInterceptor()), grpc.ChainStreamInterceptor(otelgrpc.StreamServerInterceptor()))
}
err = rpc.StartTCPServer(s.config.ListenPort, s.config.ListenPort, s.seedServer, opts...)
if err != nil {
return errors.Wrap(err, "start tcp server")
}
return nil
}
func (s *Server) Stop() {
if s.managerClient != nil {
s.managerClient.Close()
logger.Info("manager client closed")
}
rpc.StopServer()
logger.Info("grpc server closed under request")
}