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package filer
import ( "context"
"github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/chrislusf/seaweedfs/weed/util" "github.com/golang/protobuf/proto" "github.com/viant/ptrie" )
const ( DirectoryEtc = "/etc" FilerConfName = "filer.conf" )
type FilerConf struct { rules ptrie.Trie }
func NewFilerConf() (fc *FilerConf) { fc = &FilerConf{ rules: ptrie.New(), } return fc }
func (fc *FilerConf) loadFromFiler(filer *Filer) (err error){ filerConfPath := util.NewFullPath(DirectoryEtc, FilerConfName) entry, err := filer.FindEntry(context.Background(), filerConfPath) if err != nil { if err == filer_pb.ErrNotFound { return nil } glog.Errorf("read filer conf entry %s: %v", filerConfPath, err) return }
return fc.loadFromChunks(filer, entry.Chunks) }
func (fc *FilerConf) loadFromChunks(filer *Filer, chunks []*filer_pb.FileChunk) (err error) { data, err := filer.readEntry(chunks) if err != nil { glog.Errorf("read filer conf content: %v", err) return }
return fc.loadFromBytes(data) }
func (fc *FilerConf) loadFromBytes(data []byte) (err error) { conf := &filer_pb.FilerConf{} err = proto.UnmarshalText(string(data), conf) if err != nil { glog.Errorf("unable to parse filer conf: %v", err) // this is not recoverable
return nil }
return fc.doLoadConf(conf) }
func (fc *FilerConf) doLoadConf(conf *filer_pb.FilerConf) (err error) { for _, location := range conf.Locations { err = fc.rules.Put([]byte(location.LocationPrefix), location) if err != nil { glog.Errorf("put location prefix: %v", err) // this is not recoverable
return nil } } return nil }
var ( EmptyFilerConfPathConf = &filer_pb.FilerConf_PathConf{} )
func (fc *FilerConf) MatchStorageRule(path string) (pathConf *filer_pb.FilerConf_PathConf){ fc.rules.MatchPrefix([]byte(path), func(key []byte, value interface{}) bool { pathConf = value.(*filer_pb.FilerConf_PathConf) return true }) if pathConf == nil { return EmptyFilerConfPathConf } return pathConf }
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