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package filer2
import (
"fmt"
"github.com/chrislusf/seaweedfs/weed/filer2/embedded"
"github.com/karlseguin/ccache"
"strings"
)
type Filer struct {
master string
store FilerStore
directoryCache *ccache.Cache
}
func NewFiler(master string) *Filer {
return &Filer{
master: master,
directoryCache: ccache.New(ccache.Configure().MaxSize(1000).ItemsToPrune(100)),
}
}
func NewEmbeddedFiler(master string, dir string) (*Filer, error) {
_, err := embedded.NewEmbeddedStore(dir)
if err != nil {
return nil, fmt.Errorf("failed to create embedded filer store: %v", err)
}
return &Filer{
master: master,
// store: store,
}, nil
}
func (f *Filer) CreateEntry(entry Entry) (error) {
/*
1. recursively ensure parent directory is created.
2. get current parent directory, add link,
3. add the file entry
*/
recursivelyEnsureDirectory(entry.Dir, func(parent, name string) error {
return nil
})
return f.store.CreateEntry(entry)
}
func (f *Filer) AppendFileChunk(p FullPath, c FileChunk) (err error) {
return f.store.AppendFileChunk(p, c)
}
func (f *Filer) FindEntry(p FullPath) (found bool, fileEntry Entry, err error) {
return f.store.FindEntry(p)
}
func (f *Filer) DeleteEntry(p FullPath) (fileEntry Entry, err error) {
return f.store.DeleteEntry(p)
}
func (f *Filer) ListDirectoryEntries(p FullPath) ([]Entry, error) {
return f.store.ListDirectoryEntries(p)
}
func (f *Filer) UpdateEntry(entry Entry) (error) {
return f.store.UpdateEntry(entry)
}
func recursivelyEnsureDirectory(fullPath string, fn func(parent, name string) error) (error) {
if strings.HasSuffix(fullPath, "/") {
fullPath = fullPath[0:len(fullPath)-1]
}
nextPathEnd := strings.LastIndex(fullPath, "/")
if nextPathEnd < 0 {
return nil
}
dirName := fullPath[nextPathEnd+1:]
parentDirPath := fullPath[0:nextPathEnd]
if parentDirPath == "" {
parentDirPath = "/"
}
if err := recursivelyEnsureDirectory(parentDirPath, fn); err != nil {
return err
}
if err := fn(parentDirPath, dirName); err != nil {
return err
}
return nil
}
func (f *Filer) cacheGetDirectory(dirpath string) (error) {
return nil
}
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