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manager.go
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manager.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 manager
import (
"context"
"crypto/tls"
"embed"
"io/fs"
"net/http"
"path"
"time"
"github.com/gin-contrib/static"
"github.com/johanbrandhorst/certify"
"google.golang.org/grpc"
zapadapter "logur.dev/adapter/zap"
logger "d7y.io/dragonfly/v2/internal/dflog"
"d7y.io/dragonfly/v2/manager/cache"
"d7y.io/dragonfly/v2/manager/config"
"d7y.io/dragonfly/v2/manager/database"
"d7y.io/dragonfly/v2/manager/job"
"d7y.io/dragonfly/v2/manager/metrics"
"d7y.io/dragonfly/v2/manager/permission/rbac"
"d7y.io/dragonfly/v2/manager/router"
"d7y.io/dragonfly/v2/manager/rpcserver"
"d7y.io/dragonfly/v2/manager/searcher"
"d7y.io/dragonfly/v2/manager/service"
pkgcache "d7y.io/dragonfly/v2/pkg/cache"
"d7y.io/dragonfly/v2/pkg/dfpath"
"d7y.io/dragonfly/v2/pkg/issuer"
"d7y.io/dragonfly/v2/pkg/objectstorage"
"d7y.io/dragonfly/v2/pkg/rpc"
"d7y.io/dragonfly/v2/pkg/types"
)
const (
// gracefulStopTimeout specifies a time limit for
// grpc server to complete a graceful shutdown.
gracefulStopTimeout = 10 * time.Minute
// assetsTargetPath is target path of embed assets.
assetsTargetPath = "dist"
)
//go:embed dist/*
var assets embed.FS
type embedFileSystem struct {
http.FileSystem
}
func (e embedFileSystem) Exists(prefix string, path string) bool {
_, err := e.Open(path)
if err != nil {
return false
}
return true
}
func EmbedFolder(fsEmbed embed.FS, targetPath string) static.ServeFileSystem {
fsys, err := fs.Sub(fsEmbed, targetPath)
if err != nil {
panic(err)
}
return embedFileSystem{
FileSystem: http.FS(fsys),
}
}
type Server struct {
// Server configuration
config *config.Config
// GRPC server
grpcServer *grpc.Server
// REST server
restServer *http.Server
// Metrics server
metricsServer *http.Server
}
func New(cfg *config.Config, d dfpath.Dfpath) (*Server, error) {
s := &Server{config: cfg}
// Initialize database
db, err := database.New(cfg)
if err != nil {
return nil, err
}
// Initialize enforcer
enforcer, err := rbac.NewEnforcer(db.DB)
if err != nil {
return nil, err
}
// Initialize cache
cache, err := cache.New(cfg)
if err != nil {
return nil, err
}
// Initialize searcher
searcher := searcher.New(d.PluginDir())
// Initialize job
job, err := job.New(cfg)
if err != nil {
return nil, err
}
// Initialize object storage
var objectStorage objectstorage.ObjectStorage
if cfg.ObjectStorage.Enable {
objectStorage, err = objectstorage.New(
cfg.ObjectStorage.Name,
cfg.ObjectStorage.Region,
cfg.ObjectStorage.Endpoint,
cfg.ObjectStorage.AccessKey,
cfg.ObjectStorage.SecretKey,
objectstorage.WithS3ForcePathStyle(cfg.ObjectStorage.S3ForcePathStyle),
)
if err != nil {
return nil, err
}
}
// Initialize REST server
restService := service.New(db, cache, job, enforcer, objectStorage)
router, err := router.Init(cfg, d.LogDir(), restService, enforcer, EmbedFolder(assets, assetsTargetPath))
if err != nil {
return nil, err
}
s.restServer = &http.Server{
Addr: cfg.Server.REST.Addr,
Handler: router,
}
// Initialize roles and check roles
err = rbac.InitRBAC(enforcer, router, db.DB)
if err != nil {
return nil, err
}
// Initialize signing certificate and tls credentials of grpc server.
var options []rpcserver.Option
if cfg.Security.AutoIssueCert {
cert, err := tls.X509KeyPair([]byte(cfg.Security.CACert), []byte(cfg.Security.CAKey))
if err != nil {
return nil, err
}
certifyClient := &certify.Certify{
CommonName: types.ManagerName,
Issuer: issuer.NewDragonflyManagerIssuer(
&cert,
issuer.WithManagerValidityPeriod(cfg.Security.CertSpec.ValidityPeriod),
),
RenewBefore: time.Hour,
CertConfig: &certify.CertConfig{
SubjectAlternativeNames: cfg.Security.CertSpec.DNSNames,
IPSubjectAlternativeNames: append(cfg.Security.CertSpec.IPAddresses, cfg.Server.GRPC.AdvertiseIP),
},
IssueTimeout: 0,
Logger: zapadapter.New(logger.CoreLogger.Desugar()),
Cache: pkgcache.NewCertifyMutliCache(
certify.NewMemCache(),
certify.DirCache(path.Join(d.CacheDir(), pkgcache.CertifyCacheDirName, types.ManagerName))),
}
// Issue a certificate to reduce first time delay.
if _, err := certifyClient.GetCertificate(&tls.ClientHelloInfo{
ServerName: cfg.Server.GRPC.AdvertiseIP.String(),
}); err != nil {
logger.Errorf("issue certificate error: %s", err.Error())
return nil, err
}
// Manager GRPC server's tls varify must be false. If ClientCAs are required for client verification,
// the client cannot call the IssueCertificate api.
transportCredentials, err := rpc.NewServerCredentialsByCertify(cfg.Security.TLSPolicy, false, []byte(cfg.Security.CACert), certifyClient)
if err != nil {
return nil, err
}
options = append(
options,
// Set ca certificate for issuing certificate.
rpcserver.WithSelfSignedCert(&cert),
// Set tls credentials for grpc server.
rpcserver.WithGRPCServerOptions([]grpc.ServerOption{grpc.Creds(transportCredentials)}),
)
}
// Initialize GRPC server
_, grpcServer, err := rpcserver.New(cfg, db, cache, searcher, objectStorage, &cfg.ObjectStorage, options...)
if err != nil {
return nil, err
}
s.grpcServer = grpcServer
// Initialize prometheus
if cfg.Metrics.Enable {
s.metricsServer = metrics.New(&cfg.Metrics, grpcServer)
}
return s, nil
}
func (s *Server) Serve() error {
// Started REST server
go func() {
logger.Infof("started rest server at %s", s.restServer.Addr)
if err := s.restServer.ListenAndServe(); err != nil {
if err == http.ErrServerClosed {
return
}
logger.Fatalf("rest server closed unexpect: %v", err)
}
}()
// Started metrics server
if s.metricsServer != nil {
go func() {
logger.Infof("started metrics server at %s", s.metricsServer.Addr)
if err := s.metricsServer.ListenAndServe(); err != nil {
if err == http.ErrServerClosed {
return
}
logger.Fatalf("metrics server closed unexpect: %v", err)
}
}()
}
// Generate GRPC listener
lis, _, err := rpc.ListenWithPortRange(s.config.Server.GRPC.ListenIP.String(), s.config.Server.GRPC.PortRange.Start, s.config.Server.GRPC.PortRange.End)
if err != nil {
logger.Fatalf("net listener failed to start: %v", err)
}
defer lis.Close()
// Started GRPC server
logger.Infof("started grpc server at %s://%s", lis.Addr().Network(), lis.Addr().String())
if err := s.grpcServer.Serve(lis); err != nil {
logger.Errorf("stoped grpc server: %+v", err)
return err
}
return nil
}
func (s *Server) Stop() {
// Stop REST server
if err := s.restServer.Shutdown(context.Background()); err != nil {
logger.Errorf("rest server failed to stop: %+v", err)
} else {
logger.Info("rest server closed under request")
}
// Stop metrics server
if s.metricsServer != nil {
if err := s.metricsServer.Shutdown(context.Background()); err != nil {
logger.Errorf("metrics server failed to stop: %+v", err)
} else {
logger.Info("metrics server closed under request")
}
}
// Stop GRPC server
stopped := make(chan struct{})
go func() {
s.grpcServer.GracefulStop()
logger.Info("grpc server closed under request")
close(stopped)
}()
t := time.NewTimer(gracefulStopTimeout)
select {
case <-t.C:
s.grpcServer.Stop()
case <-stopped:
t.Stop()
}
}