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filesystem.go
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filesystem.go
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package client
import (
"fmt"
"io"
"io/fs"
"log"
"os"
"github.com/movsb/taoblog/modules/utils/syncer"
proto "github.com/movsb/taoblog/protocols"
)
type SyncFileSpec proto.FileSpec
func (s *SyncFileSpec) Less(than *SyncFileSpec) bool {
return s.Path < than.Path
}
func (s *SyncFileSpec) DeepEqual(to *SyncFileSpec) bool {
lm, rm := os.FileMode(s.Mode), os.FileMode(to.Mode)
if lm.IsDir() != rm.IsDir() {
return false
}
if s.Size != to.Size {
return false
}
if s.Time != to.Time {
return false
}
return true
}
type FilesSyncer struct {
client proto.Management_FileSystemClient
}
func NewFilesSyncer(client proto.Management_FileSystemClient) *FilesSyncer {
s := &FilesSyncer{
client: client,
}
return s
}
func (s *FilesSyncer) SyncPostFiles(id int64, root fs.FS, files []string) error {
localFiles, err := s.listLocalFilesFromPaths(root, files)
if err != nil {
return err
}
if err := s.init(&proto.FileSystemRequest_InitRequest{
For: &proto.FileSystemRequest_InitRequest_Post_{
Post: &proto.FileSystemRequest_InitRequest_Post{
Id: id,
},
},
}); err != nil {
return err
}
wrappedLocalFiles := s.wrapFileSpecs(localFiles)
wrappedRemoteFiles, err := s.listRemoteFiles()
if err != nil {
return err
}
ss := syncer.New(
syncer.WithCopyLocalToRemote[[]*SyncFileSpec](func(f *SyncFileSpec) error {
fp, err := root.Open(f.Path)
if err != nil {
return err
}
defer fp.Close()
return s.copyLocalToRemote(f, fp)
}),
)
return ss.Sync(wrappedLocalFiles, wrappedRemoteFiles, syncer.LocalToRemote)
}
func (s *FilesSyncer) init(req *proto.FileSystemRequest_InitRequest) error {
if err := s.client.Send(&proto.FileSystemRequest{
Init: req,
}); err != nil {
panic(err)
}
rsp, err := s.client.Recv()
if err != nil {
return err
}
if rsp.GetInit() == nil {
return fmt.Errorf("expect init")
}
return nil
}
func (s *FilesSyncer) listLocalFilesFromPaths(root fs.FS, paths []string) ([]*proto.FileSpec, error) {
var localFiles []*proto.FileSpec
for _, file := range paths {
stat, err := fs.Stat(root, file)
if err != nil {
return nil, err
}
f := proto.FileSpec{
Path: file,
Mode: uint32(stat.Mode()),
Size: uint32(stat.Size()),
Time: uint32(stat.ModTime().Unix()),
}
localFiles = append(localFiles, (*proto.FileSpec)(&f))
}
return localFiles, nil
}
func (s *FilesSyncer) listRemoteFiles() ([]*SyncFileSpec, error) {
if err := s.client.Send(&proto.FileSystemRequest{
Request: &proto.FileSystemRequest_ListFiles{
ListFiles: &proto.FileSystemRequest_ListFilesRequest{},
},
}); err != nil {
return nil, err
}
rsp, err := s.client.Recv()
if err != nil {
return nil, err
}
remoteList := rsp.GetListFiles()
if remoteList == nil {
return nil, fmt.Errorf("remote list is nil")
}
remoteFiles := remoteList.GetFiles()
return s.wrapFileSpecs(remoteFiles), nil
}
func (s *FilesSyncer) wrapFileSpecs(list []*proto.FileSpec) []*SyncFileSpec {
sfs := make([]*SyncFileSpec, 0, len(list))
for _, l := range list {
sfs = append(sfs, (*SyncFileSpec)(l))
}
return sfs
}
func (s *FilesSyncer) deleteRemote(f *SyncFileSpec) error {
if err := s.client.Send(&proto.FileSystemRequest{
Request: &proto.FileSystemRequest_DeleteFile{
DeleteFile: &proto.FileSystemRequest_DeleteFileRequest{
Path: f.Path,
},
},
}); err != nil {
panic(err)
}
rsp, err := s.client.Recv()
if err != nil {
panic(err)
}
if rsp.GetDeleteFile() == nil {
panic("expect get delete")
}
log.Println("删除远程:", f.Path)
return nil
}
func (s *FilesSyncer) copyLocalToRemote(f *SyncFileSpec, r io.Reader) error {
data, err := io.ReadAll(r)
if err != nil {
return err
}
if err := s.client.Send(&proto.FileSystemRequest{
Request: &proto.FileSystemRequest_WriteFile{
WriteFile: &proto.FileSystemRequest_WriteFileRequest{
Spec: (*proto.FileSpec)(f),
Data: data,
},
},
}); err != nil {
return err
}
rsp, err := s.client.Recv()
if err != nil {
return err
}
if rsp.GetWriteFile() == nil {
return fmt.Errorf("expect write file")
}
log.Println("复制到远程:", f.Path)
return nil
}