mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-28 11:57:54 +08:00
275 lines
7.5 KiB
Go
275 lines
7.5 KiB
Go
package filesys
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"github.com/chrislusf/seaweedfs/weed/filer"
|
|
"github.com/chrislusf/seaweedfs/weed/storage/types"
|
|
"github.com/chrislusf/seaweedfs/weed/wdclient"
|
|
"math"
|
|
"os"
|
|
"path"
|
|
"sync"
|
|
"time"
|
|
|
|
"google.golang.org/grpc"
|
|
|
|
"github.com/chrislusf/seaweedfs/weed/util/grace"
|
|
|
|
"github.com/seaweedfs/fuse"
|
|
"github.com/seaweedfs/fuse/fs"
|
|
|
|
"github.com/chrislusf/seaweedfs/weed/filesys/meta_cache"
|
|
"github.com/chrislusf/seaweedfs/weed/glog"
|
|
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
|
|
"github.com/chrislusf/seaweedfs/weed/util"
|
|
"github.com/chrislusf/seaweedfs/weed/util/chunk_cache"
|
|
)
|
|
|
|
type Option struct {
|
|
MountDirectory string
|
|
FilerAddress string
|
|
FilerGrpcAddress string
|
|
GrpcDialOption grpc.DialOption
|
|
FilerMountRootPath string
|
|
Collection string
|
|
Replication string
|
|
TtlSec int32
|
|
DiskType types.DiskType
|
|
ChunkSizeLimit int64
|
|
ConcurrentWriters int
|
|
CacheDir string
|
|
CacheSizeMB int64
|
|
DataCenter string
|
|
Umask os.FileMode
|
|
|
|
MountUid uint32
|
|
MountGid uint32
|
|
MountMode os.FileMode
|
|
MountCtime time.Time
|
|
MountMtime time.Time
|
|
|
|
VolumeServerAccess string // how to access volume servers
|
|
Cipher bool // whether encrypt data on volume server
|
|
UidGidMapper *meta_cache.UidGidMapper
|
|
}
|
|
|
|
var _ = fs.FS(&WFS{})
|
|
var _ = fs.FSStatfser(&WFS{})
|
|
|
|
type WFS struct {
|
|
option *Option
|
|
|
|
// contains all open handles, protected by handlesLock
|
|
handlesLock sync.Mutex
|
|
handles map[uint64]*FileHandle
|
|
|
|
bufPool sync.Pool
|
|
|
|
stats statsCache
|
|
|
|
root fs.Node
|
|
fsNodeCache *FsCache
|
|
|
|
chunkCache *chunk_cache.TieredChunkCache
|
|
metaCache *meta_cache.MetaCache
|
|
signature int32
|
|
|
|
// throttle writers
|
|
concurrentWriters *util.LimitedConcurrentExecutor
|
|
Server *fs.Server
|
|
}
|
|
type statsCache struct {
|
|
filer_pb.StatisticsResponse
|
|
lastChecked int64 // unix time in seconds
|
|
}
|
|
|
|
func NewSeaweedFileSystem(option *Option) *WFS {
|
|
wfs := &WFS{
|
|
option: option,
|
|
handles: make(map[uint64]*FileHandle),
|
|
bufPool: sync.Pool{
|
|
New: func() interface{} {
|
|
return make([]byte, option.ChunkSizeLimit)
|
|
},
|
|
},
|
|
signature: util.RandomInt32(),
|
|
}
|
|
cacheUniqueId := util.Md5String([]byte(option.MountDirectory + option.FilerGrpcAddress + option.FilerMountRootPath + util.Version()))[0:8]
|
|
cacheDir := path.Join(option.CacheDir, cacheUniqueId)
|
|
if option.CacheSizeMB > 0 {
|
|
os.MkdirAll(cacheDir, os.FileMode(0777)&^option.Umask)
|
|
wfs.chunkCache = chunk_cache.NewTieredChunkCache(256, cacheDir, option.CacheSizeMB, 1024*1024)
|
|
}
|
|
|
|
wfs.metaCache = meta_cache.NewMetaCache(path.Join(cacheDir, "meta"), util.FullPath(option.FilerMountRootPath), option.UidGidMapper, func(filePath util.FullPath) {
|
|
|
|
fsNode := NodeWithId(filePath.AsInode())
|
|
if err := wfs.Server.InvalidateNodeData(fsNode); err != nil {
|
|
glog.V(4).Infof("InvalidateNodeData %s : %v", filePath, err)
|
|
}
|
|
|
|
dir, name := filePath.DirAndName()
|
|
parent := NodeWithId(util.FullPath(dir).AsInode())
|
|
if dir == option.FilerMountRootPath {
|
|
parent = NodeWithId(1)
|
|
}
|
|
if err := wfs.Server.InvalidateEntry(parent, name); err != nil {
|
|
glog.V(4).Infof("InvalidateEntry %s : %v", filePath, err)
|
|
}
|
|
})
|
|
startTime := time.Now()
|
|
go meta_cache.SubscribeMetaEvents(wfs.metaCache, wfs.signature, wfs, wfs.option.FilerMountRootPath, startTime.UnixNano())
|
|
grace.OnInterrupt(func() {
|
|
wfs.metaCache.Shutdown()
|
|
})
|
|
|
|
wfs.root = &Dir{name: wfs.option.FilerMountRootPath, wfs: wfs, id: 1}
|
|
wfs.fsNodeCache = newFsCache(wfs.root)
|
|
|
|
if wfs.option.ConcurrentWriters > 0 {
|
|
wfs.concurrentWriters = util.NewLimitedConcurrentExecutor(wfs.option.ConcurrentWriters)
|
|
}
|
|
|
|
return wfs
|
|
}
|
|
|
|
func (wfs *WFS) Root() (fs.Node, error) {
|
|
return wfs.root, nil
|
|
}
|
|
|
|
func (wfs *WFS) AcquireHandle(file *File, uid, gid uint32) (fileHandle *FileHandle) {
|
|
|
|
fullpath := file.fullpath()
|
|
glog.V(4).Infof("AcquireHandle %s uid=%d gid=%d", fullpath, uid, gid)
|
|
|
|
inodeId := file.Id()
|
|
|
|
wfs.handlesLock.Lock()
|
|
existingHandle, found := wfs.handles[inodeId]
|
|
wfs.handlesLock.Unlock()
|
|
if found && existingHandle != nil {
|
|
existingHandle.f.isOpen++
|
|
glog.V(4).Infof("Acquired Handle %s open %d", fullpath, existingHandle.f.isOpen)
|
|
return existingHandle
|
|
}
|
|
|
|
entry, _ := file.maybeLoadEntry(context.Background())
|
|
file.entry = entry
|
|
fileHandle = newFileHandle(file, uid, gid)
|
|
file.isOpen++
|
|
|
|
wfs.handlesLock.Lock()
|
|
wfs.handles[inodeId] = fileHandle
|
|
wfs.handlesLock.Unlock()
|
|
fileHandle.handle = inodeId
|
|
|
|
glog.V(4).Infof("Acquired new Handle %s open %d", fullpath, file.isOpen)
|
|
return
|
|
}
|
|
|
|
func (wfs *WFS) ReleaseHandle(fullpath util.FullPath, handleId fuse.HandleID) {
|
|
wfs.handlesLock.Lock()
|
|
defer wfs.handlesLock.Unlock()
|
|
|
|
glog.V(4).Infof("ReleaseHandle %s id %d current handles length %d", fullpath, handleId, len(wfs.handles))
|
|
|
|
delete(wfs.handles, uint64(handleId))
|
|
|
|
return
|
|
}
|
|
|
|
// 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)
|
|
|
|
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),
|
|
DiskType: string(wfs.option.DiskType),
|
|
}
|
|
|
|
glog.V(4).Infof("reading filer stats: %+v", request)
|
|
resp, err := client.Statistics(context.Background(), 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
|
|
|
|
// 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
|
|
}
|
|
|
|
func (wfs *WFS) mapPbIdFromFilerToLocal(entry *filer_pb.Entry) {
|
|
if entry.Attributes == nil {
|
|
return
|
|
}
|
|
entry.Attributes.Uid, entry.Attributes.Gid = wfs.option.UidGidMapper.FilerToLocal(entry.Attributes.Uid, entry.Attributes.Gid)
|
|
}
|
|
func (wfs *WFS) mapPbIdFromLocalToFiler(entry *filer_pb.Entry) {
|
|
if entry.Attributes == nil {
|
|
return
|
|
}
|
|
entry.Attributes.Uid, entry.Attributes.Gid = wfs.option.UidGidMapper.LocalToFiler(entry.Attributes.Uid, entry.Attributes.Gid)
|
|
}
|
|
|
|
func (wfs *WFS) LookupFn() wdclient.LookupFileIdFunctionType {
|
|
if wfs.option.VolumeServerAccess == "filerProxy" {
|
|
return func(fileId string) (targetUrls []string, err error) {
|
|
return []string{"http://" + wfs.option.FilerAddress + "/?proxyChunkId=" + fileId}, nil
|
|
}
|
|
}
|
|
return filer.LookupFn(wfs)
|
|
|
|
}
|
|
|
|
type NodeWithId uint64
|
|
func (n NodeWithId) Id() uint64 {
|
|
return uint64(n)
|
|
}
|
|
func (n NodeWithId) Attr(ctx context.Context, attr *fuse.Attr) error {
|
|
return nil
|
|
}
|