lsm/seaweedfs
1
0
Fork 0
mirror of https://github.com/seaweedfs/seaweedfs.git synced 2025-09-19 05:07:57 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

listen for metadata updates

Browse Source
This commit is contained in:
chrislu
2022-02-14 01:09:31 -08:00
parent 7286e525ad
commit dbeeda8123
17 changed files with 499 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
weed/mount/inode_to_path.go
View File

@@ -14,21 +14,23 @@ type InodeToPath struct {
}
type InodeEntry struct {
util.FullPath
nlookup uint64
nlookup uint64
isDirectory bool
isChildrenCached bool
}
func NewInodeToPath() *InodeToPath {
return &InodeToPath{
t := &InodeToPath{
inode2path: make(map[uint64]*InodeEntry),
path2inode: make(map[util.FullPath]uint64),
nextInodeId: 2, // the root inode id is 1
}
t.inode2path[1] = &InodeEntry{"/", 1, true, false}
t.path2inode["/"] = 1
return t
}
func (i *InodeToPath) Lookup(path util.FullPath) uint64 {
if path == "/" {
return 1
}
func (i *InodeToPath) Lookup(path util.FullPath, isDirectory bool) uint64 {
i.Lock()
defer i.Unlock()
inode, found := i.path2inode[path]
@@ -36,7 +38,7 @@ func (i *InodeToPath) Lookup(path util.FullPath) uint64 {
inode = i.nextInodeId
i.nextInodeId++
i.path2inode[path] = inode
i.inode2path[inode] = &InodeEntry{path, 1}
i.inode2path[inode] = &InodeEntry{path, 1, isDirectory, false}
} else {
i.inode2path[inode].nlookup++
}
@@ -58,9 +60,6 @@ func (i *InodeToPath) GetInode(path util.FullPath) uint64 {
}
func (i *InodeToPath) GetPath(inode uint64) util.FullPath {
if inode == 1 {
return "/"
}
i.RLock()
defer i.RUnlock()
path, found := i.inode2path[inode]
@@ -71,15 +70,37 @@ func (i *InodeToPath) GetPath(inode uint64) util.FullPath {
}
func (i *InodeToPath) HasPath(path util.FullPath) bool {
if path == "/" {
return true
}
i.RLock()
defer i.RUnlock()
_, found := i.path2inode[path]
return found
}
func (i *InodeToPath) MarkChildrenCached(fullpath util.FullPath) {
i.RLock()
defer i.RUnlock()
inode, found := i.path2inode[fullpath]
if !found {
glog.Fatalf("MarkChildrenCached not found inode %v", fullpath)
}
path, found := i.inode2path[inode]
path.isChildrenCached = true
}
func (i *InodeToPath) IsChildrenCached(fullpath util.FullPath) bool {
i.RLock()
defer i.RUnlock()
inode, found := i.path2inode[fullpath]
if !found {
return false
}
path, found := i.inode2path[inode]
if found {
return path.isChildrenCached
}
return false
}
func (i *InodeToPath) HasInode(inode uint64) bool {
if inode == 1 {
return true
@@ -91,9 +112,6 @@ func (i *InodeToPath) HasInode(inode uint64) bool {
}
func (i *InodeToPath) RemovePath(path util.FullPath) {
if path == "/" {
return
}
i.Lock()
defer i.Unlock()
inode, found := i.path2inode[path]
@@ -104,9 +122,6 @@ func (i *InodeToPath) RemovePath(path util.FullPath) {
}
func (i *InodeToPath) MovePath(sourcePath, targetPath util.FullPath) {
if sourcePath == "/" || targetPath == "/" {
return
}
i.Lock()
defer i.Unlock()
sourceInode, sourceFound := i.path2inode[sourcePath]
@@ -127,12 +142,8 @@ func (i *InodeToPath) MovePath(sourcePath, targetPath util.FullPath) {
}
}
func (i *InodeToPath) Forget(inode, nlookup uint64) {
if inode == 1 {
return
}
func (i *InodeToPath) Forget(inode, nlookup uint64, onForgetDir func(dir util.FullPath)) {
i.Lock()
defer i.Unlock()
path, found := i.inode2path[inode]
if found {
path.nlookup -= nlookup
@@ -141,4 +152,10 @@ func (i *InodeToPath) Forget(inode, nlookup uint64) {
delete(i.inode2path, inode)
}
}
i.Unlock()
if found {
if path.isDirectory && onForgetDir != nil {
onForgetDir(path.FullPath)
}
}
}