2018-05-06 05:47:16 +00:00
|
|
|
package filesys
|
|
|
|
|
2018-05-08 08:59:43 +00:00
|
|
|
import (
|
2018-11-23 07:05:22 +00:00
|
|
|
"context"
|
2018-11-08 15:37:34 +00:00
|
|
|
"fmt"
|
2018-11-23 07:05:22 +00:00
|
|
|
"math"
|
2018-11-08 15:37:34 +00:00
|
|
|
"sync"
|
|
|
|
"time"
|
|
|
|
|
2018-07-22 00:39:10 +00:00
|
|
|
"bazil.org/fuse"
|
2018-05-08 08:59:43 +00:00
|
|
|
"bazil.org/fuse/fs"
|
2018-06-06 09:09:57 +00:00
|
|
|
"github.com/chrislusf/seaweedfs/weed/glog"
|
2018-07-22 00:39:10 +00:00
|
|
|
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
|
2018-07-04 02:07:55 +00:00
|
|
|
"github.com/chrislusf/seaweedfs/weed/util"
|
2018-07-22 00:39:10 +00:00
|
|
|
"github.com/karlseguin/ccache"
|
2018-11-15 07:31:39 +00:00
|
|
|
"google.golang.org/grpc"
|
2018-05-08 08:59:43 +00:00
|
|
|
)
|
2018-05-06 05:47:16 +00:00
|
|
|
|
2018-07-22 08:14:36 +00:00
|
|
|
type Option struct {
|
|
|
|
FilerGrpcAddress string
|
|
|
|
FilerMountRootPath string
|
|
|
|
Collection string
|
|
|
|
Replication string
|
|
|
|
TtlSec int32
|
|
|
|
ChunkSizeLimit int64
|
|
|
|
DataCenter string
|
|
|
|
DirListingLimit int
|
2018-11-08 15:37:34 +00:00
|
|
|
EntryCacheTtl time.Duration
|
2018-07-22 08:14:36 +00:00
|
|
|
}
|
|
|
|
|
2018-11-23 07:05:22 +00:00
|
|
|
var _ = fs.FS(&WFS{})
|
|
|
|
var _ = fs.FSStatfser(&WFS{})
|
|
|
|
|
2018-05-06 05:47:16 +00:00
|
|
|
type WFS struct {
|
2018-07-22 08:14:36 +00:00
|
|
|
option *Option
|
2018-05-14 09:02:17 +00:00
|
|
|
listDirectoryEntriesCache *ccache.Cache
|
2018-06-06 09:09:57 +00:00
|
|
|
|
|
|
|
// contains all open handles
|
|
|
|
handles []*FileHandle
|
|
|
|
pathToHandleIndex map[string]int
|
|
|
|
pathToHandleLock sync.Mutex
|
2018-12-28 11:27:48 +00:00
|
|
|
bufPool sync.Pool
|
2018-11-15 07:31:39 +00:00
|
|
|
|
2018-11-23 08:24:51 +00:00
|
|
|
stats statsCache
|
|
|
|
}
|
|
|
|
type statsCache struct {
|
|
|
|
filer_pb.StatisticsResponse
|
|
|
|
lastChecked int64 // unix time in seconds
|
2018-05-06 05:47:16 +00:00
|
|
|
}
|
|
|
|
|
2018-07-22 08:14:36 +00:00
|
|
|
func NewSeaweedFileSystem(option *Option) *WFS {
|
2018-05-06 05:47:16 +00:00
|
|
|
return &WFS{
|
2018-11-04 19:59:08 +00:00
|
|
|
option: option,
|
2018-11-07 19:35:13 +00:00
|
|
|
listDirectoryEntriesCache: ccache.New(ccache.Configure().MaxSize(int64(option.DirListingLimit) + 200).ItemsToPrune(100)),
|
2018-06-06 09:09:57 +00:00
|
|
|
pathToHandleIndex: make(map[string]int),
|
2018-12-28 11:27:48 +00:00
|
|
|
bufPool: sync.Pool{
|
|
|
|
New: func() interface{} {
|
|
|
|
return make([]byte, option.ChunkSizeLimit)
|
|
|
|
},
|
|
|
|
},
|
2018-05-06 05:47:16 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
func (wfs *WFS) Root() (fs.Node, error) {
|
2018-07-22 08:14:36 +00:00
|
|
|
return &Dir{Path: wfs.option.FilerMountRootPath, wfs: wfs}, nil
|
2018-05-06 05:47:16 +00:00
|
|
|
}
|
2018-05-08 08:59:43 +00:00
|
|
|
|
2018-05-10 06:18:02 +00:00
|
|
|
func (wfs *WFS) withFilerClient(fn func(filer_pb.SeaweedFilerClient) error) error {
|
2018-05-08 08:59:43 +00:00
|
|
|
|
2018-12-07 09:25:01 +00:00
|
|
|
return util.WithCachedGrpcClient(func(grpcConnection *grpc.ClientConn) error {
|
|
|
|
client := filer_pb.NewSeaweedFilerClient(grpcConnection)
|
2018-11-15 07:31:39 +00:00
|
|
|
return fn(client)
|
2018-12-07 09:25:01 +00:00
|
|
|
}, wfs.option.FilerGrpcAddress)
|
2018-05-08 08:59:43 +00:00
|
|
|
|
|
|
|
}
|
2018-06-06 09:09:57 +00:00
|
|
|
|
2018-07-22 08:14:36 +00:00
|
|
|
func (wfs *WFS) AcquireHandle(file *File, uid, gid uint32) (fileHandle *FileHandle) {
|
2018-06-06 09:09:57 +00:00
|
|
|
wfs.pathToHandleLock.Lock()
|
|
|
|
defer wfs.pathToHandleLock.Unlock()
|
|
|
|
|
|
|
|
fullpath := file.fullpath()
|
|
|
|
|
|
|
|
index, found := wfs.pathToHandleIndex[fullpath]
|
|
|
|
if found && wfs.handles[index] != nil {
|
2018-12-28 11:27:48 +00:00
|
|
|
glog.V(2).Infoln(fullpath, "found fileHandle id", index)
|
2018-06-06 09:09:57 +00:00
|
|
|
return wfs.handles[index]
|
|
|
|
}
|
|
|
|
|
2018-11-15 06:48:54 +00:00
|
|
|
fileHandle = newFileHandle(file, uid, gid)
|
2018-06-06 09:09:57 +00:00
|
|
|
for i, h := range wfs.handles {
|
|
|
|
if h == nil {
|
2018-07-22 08:14:36 +00:00
|
|
|
wfs.handles[i] = fileHandle
|
|
|
|
fileHandle.handle = uint64(i)
|
2018-06-06 09:09:57 +00:00
|
|
|
wfs.pathToHandleIndex[fullpath] = i
|
2018-07-22 08:14:36 +00:00
|
|
|
glog.V(4).Infoln(fullpath, "reuse fileHandle id", fileHandle.handle)
|
2018-06-06 09:09:57 +00:00
|
|
|
return
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2018-07-22 08:14:36 +00:00
|
|
|
wfs.handles = append(wfs.handles, fileHandle)
|
|
|
|
fileHandle.handle = uint64(len(wfs.handles) - 1)
|
2018-12-28 11:27:48 +00:00
|
|
|
glog.V(2).Infoln(fullpath, "new fileHandle id", fileHandle.handle)
|
2018-07-22 08:14:36 +00:00
|
|
|
wfs.pathToHandleIndex[fullpath] = int(fileHandle.handle)
|
2018-06-06 09:09:57 +00:00
|
|
|
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2018-11-14 07:53:17 +00:00
|
|
|
func (wfs *WFS) ReleaseHandle(fullpath string, handleId fuse.HandleID) {
|
2018-06-06 09:09:57 +00:00
|
|
|
wfs.pathToHandleLock.Lock()
|
|
|
|
defer wfs.pathToHandleLock.Unlock()
|
|
|
|
|
2018-11-21 23:12:47 +00:00
|
|
|
glog.V(4).Infof("%s releasing handle id %d current handles length %d", fullpath, handleId, len(wfs.handles))
|
2018-11-14 07:53:17 +00:00
|
|
|
delete(wfs.pathToHandleIndex, fullpath)
|
2018-06-06 09:09:57 +00:00
|
|
|
if int(handleId) < len(wfs.handles) {
|
|
|
|
wfs.handles[int(handleId)] = nil
|
|
|
|
}
|
|
|
|
|
|
|
|
return
|
|
|
|
}
|
2018-11-23 07:05:22 +00:00
|
|
|
|
|
|
|
// Statfs is called to obtain file system metadata. Implements fuse.FSStatfser
|
|
|
|
func (wfs *WFS) Statfs(ctx context.Context, req *fuse.StatfsRequest, resp *fuse.StatfsResponse) error {
|
|
|
|
|
|
|
|
glog.V(4).Infof("reading fs stats: %+v", req)
|
|
|
|
|
2018-11-23 08:24:51 +00:00
|
|
|
if wfs.stats.lastChecked < time.Now().Unix()-20 {
|
|
|
|
|
|
|
|
err := wfs.withFilerClient(func(client filer_pb.SeaweedFilerClient) error {
|
|
|
|
|
|
|
|
request := &filer_pb.StatisticsRequest{
|
|
|
|
Collection: wfs.option.Collection,
|
|
|
|
Replication: wfs.option.Replication,
|
|
|
|
Ttl: fmt.Sprintf("%ds", wfs.option.TtlSec),
|
|
|
|
}
|
|
|
|
|
|
|
|
glog.V(4).Infof("reading filer stats: %+v", request)
|
|
|
|
resp, err := client.Statistics(ctx, request)
|
|
|
|
if err != nil {
|
|
|
|
glog.V(0).Infof("reading filer stats %v: %v", request, err)
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
glog.V(4).Infof("read filer stats: %+v", resp)
|
|
|
|
|
|
|
|
wfs.stats.TotalSize = resp.TotalSize
|
|
|
|
wfs.stats.UsedSize = resp.UsedSize
|
|
|
|
wfs.stats.FileCount = resp.FileCount
|
|
|
|
wfs.stats.lastChecked = time.Now().Unix()
|
|
|
|
|
|
|
|
return nil
|
|
|
|
})
|
|
|
|
if err != nil {
|
|
|
|
glog.V(0).Infof("filer Statistics: %v", err)
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
totalDiskSize := wfs.stats.TotalSize
|
|
|
|
usedDiskSize := wfs.stats.UsedSize
|
|
|
|
actualFileCount := wfs.stats.FileCount
|
2018-11-23 07:05:22 +00:00
|
|
|
|
|
|
|
// Compute the total number of available blocks
|
|
|
|
resp.Blocks = totalDiskSize / blockSize
|
|
|
|
|
|
|
|
// Compute the number of used blocks
|
|
|
|
numblocks := uint64(usedDiskSize / blockSize)
|
|
|
|
|
|
|
|
// Report the number of free and available blocks for the block size
|
|
|
|
resp.Bfree = resp.Blocks - numblocks
|
|
|
|
resp.Bavail = resp.Blocks - numblocks
|
|
|
|
resp.Bsize = uint32(blockSize)
|
|
|
|
|
|
|
|
// Report the total number of possible files in the file system (and those free)
|
|
|
|
resp.Files = math.MaxInt64
|
|
|
|
resp.Ffree = math.MaxInt64 - actualFileCount
|
|
|
|
|
|
|
|
// Report the maximum length of a name and the minimum fragment size
|
|
|
|
resp.Namelen = 1024
|
|
|
|
resp.Frsize = uint32(blockSize)
|
|
|
|
|
|
|
|
return nil
|
|
|
|
}
|