seaweedfs/weed/storage/backend/disk_file.go
chrislu 93261f5199 Revert "Refactor for Sync method (#3426)"
This reverts commit 670cb759f8.

with the pr
weed/storage () - (master) > go test -count=1 ./...
ok  	github.com/seaweedfs/seaweedfs/weed/storage	18.486s
?   	github.com/seaweedfs/seaweedfs/weed/storage/backend	[no test files]
ok  	github.com/seaweedfs/seaweedfs/weed/storage/backend/memory_map	0.025s
?   	github.com/seaweedfs/seaweedfs/weed/storage/backend/s3_backend	[no test files]
ok  	github.com/seaweedfs/seaweedfs/weed/storage/erasure_coding	0.864s
?   	github.com/seaweedfs/seaweedfs/weed/storage/idx	[no test files]
ok  	github.com/seaweedfs/seaweedfs/weed/storage/needle	0.110s
ok  	github.com/seaweedfs/seaweedfs/weed/storage/needle_map	24.414s
ok  	github.com/seaweedfs/seaweedfs/weed/storage/super_block	0.203s
?   	github.com/seaweedfs/seaweedfs/weed/storage/types	[no test files]
?   	github.com/seaweedfs/seaweedfs/weed/storage/volume_info	[no test files]
weed/storage () - (master) >
weed/storage () - (master) >

without the pr
weed/storage () - (master) >
weed/storage () - (master) > go test -count=1 ./...
ok  	github.com/seaweedfs/seaweedfs/weed/storage	1.617s
?   	github.com/seaweedfs/seaweedfs/weed/storage/backend	[no test files]
ok  	github.com/seaweedfs/seaweedfs/weed/storage/backend/memory_map	0.026s
?   	github.com/seaweedfs/seaweedfs/weed/storage/backend/s3_backend	[no test files]
ok  	github.com/seaweedfs/seaweedfs/weed/storage/erasure_coding	0.906s
?   	github.com/seaweedfs/seaweedfs/weed/storage/idx	[no test files]
ok  	github.com/seaweedfs/seaweedfs/weed/storage/needle	0.202s
ok  	github.com/seaweedfs/seaweedfs/weed/storage/needle_map	24.533s
ok  	github.com/seaweedfs/seaweedfs/weed/storage/super_block	0.280s
?   	github.com/seaweedfs/seaweedfs/weed/storage/types	[no test files]
?   	github.com/seaweedfs/seaweedfs/weed/storage/volume_info	[no test files]
2022-08-15 15:35:31 -07:00

87 lines
1.6 KiB
Go

package backend
import (
"github.com/seaweedfs/seaweedfs/weed/glog"
. "github.com/seaweedfs/seaweedfs/weed/storage/types"
"os"
"time"
)
var (
_ BackendStorageFile = &DiskFile{}
)
type DiskFile struct {
File *os.File
fullFilePath string
fileSize int64
modTime time.Time
}
func NewDiskFile(f *os.File) *DiskFile {
stat, err := f.Stat()
if err != nil {
glog.Fatalf("stat file %s: %v", f.Name(), err)
}
offset := stat.Size()
if offset%NeedlePaddingSize != 0 {
offset = offset + (NeedlePaddingSize - offset%NeedlePaddingSize)
}
return &DiskFile{
fullFilePath: f.Name(),
File: f,
fileSize: offset,
modTime: stat.ModTime(),
}
}
func (df *DiskFile) ReadAt(p []byte, off int64) (n int, err error) {
return df.File.ReadAt(p, off)
}
func (df *DiskFile) WriteAt(p []byte, off int64) (n int, err error) {
n, err = df.File.WriteAt(p, off)
if err == nil {
waterMark := off + int64(n)
if waterMark > df.fileSize {
df.fileSize = waterMark
df.modTime = time.Now()
}
}
return
}
func (df *DiskFile) Write(p []byte) (n int, err error) {
return df.WriteAt(p, df.fileSize)
}
func (df *DiskFile) Truncate(off int64) error {
err := df.File.Truncate(off)
if err == nil {
df.fileSize = off
df.modTime = time.Now()
}
return err
}
func (df *DiskFile) Close() error {
return df.File.Close()
}
func (df *DiskFile) GetStat() (datSize int64, modTime time.Time, err error) {
if df.File == nil {
err = os.ErrInvalid
}
return df.fileSize, df.modTime, err
}
func (df *DiskFile) Name() string {
return df.fullFilePath
}
func (df *DiskFile) Sync() error {
return nil
// return df.File.Sync()
}