mirror of
https://github.com/octoleo/syncthing.git
synced 2024-12-23 11:28:59 +00:00
88 lines
2.1 KiB
Go
88 lines
2.1 KiB
Go
// Copyright (C) 2014 The Syncthing Authors.
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify it
|
|
// under the terms of the GNU General Public License as published by the Free
|
|
// Software Foundation, either version 3 of the License, or (at your option)
|
|
// any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful, but WITHOUT
|
|
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
// more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License along
|
|
// with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package scanner
|
|
|
|
import (
|
|
"os"
|
|
"path/filepath"
|
|
"sync"
|
|
|
|
"github.com/syncthing/syncthing/internal/protocol"
|
|
)
|
|
|
|
// The parallell hasher reads FileInfo structures from the inbox, hashes the
|
|
// file to populate the Blocks element and sends it to the outbox. A number of
|
|
// workers are used in parallel. The outbox will become closed when the inbox
|
|
// is closed and all items handled.
|
|
|
|
func newParallelHasher(dir string, blockSize, workers int, outbox, inbox chan protocol.FileInfo) {
|
|
var wg sync.WaitGroup
|
|
wg.Add(workers)
|
|
|
|
for i := 0; i < workers; i++ {
|
|
go func() {
|
|
hashFiles(dir, blockSize, outbox, inbox)
|
|
wg.Done()
|
|
}()
|
|
}
|
|
|
|
go func() {
|
|
wg.Wait()
|
|
close(outbox)
|
|
}()
|
|
}
|
|
|
|
func HashFile(path string, blockSize int) ([]protocol.BlockInfo, error) {
|
|
fd, err := os.Open(path)
|
|
if err != nil {
|
|
if debug {
|
|
l.Debugln("open:", err)
|
|
}
|
|
return []protocol.BlockInfo{}, err
|
|
}
|
|
|
|
fi, err := fd.Stat()
|
|
if err != nil {
|
|
fd.Close()
|
|
if debug {
|
|
l.Debugln("stat:", err)
|
|
}
|
|
return []protocol.BlockInfo{}, err
|
|
}
|
|
defer fd.Close()
|
|
return Blocks(fd, blockSize, fi.Size())
|
|
}
|
|
|
|
func hashFiles(dir string, blockSize int, outbox, inbox chan protocol.FileInfo) {
|
|
for f := range inbox {
|
|
if f.IsDirectory() || f.IsDeleted() || f.IsSymlink() {
|
|
outbox <- f
|
|
continue
|
|
}
|
|
|
|
blocks, err := HashFile(filepath.Join(dir, f.Name), blockSize)
|
|
if err != nil {
|
|
if debug {
|
|
l.Debugln("hash error:", f.Name, err)
|
|
}
|
|
continue
|
|
}
|
|
|
|
f.Blocks = blocks
|
|
outbox <- f
|
|
}
|
|
}
|