mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2026-09-10 16:40:46 +02:00
Chris Lu
3514925581
* filer: let a nested path rule turn worm off mergePathConf ORs the booleans, so worm set on a bucket could never be lifted on a directory under it, while every string field is overridden by the more specific rule. Make worm tri-state instead: unset inherits, set wins. readOnly, fsync and disableChunkDeletion keep the OR, so a nested rule still cannot escape a lock the bucket set. Configurations written before this carry an explicit "worm": false on every rule, because they are marshalled with EmitUnpopulated. Reading those back as an override would quietly drop worm from nested paths, so filer.conf is now stamped with a version and the flag is dropped to unset when the version predates it. * filer: copy the worm value out of the matched rule mergePathConf aliased the pointer into the merged result, so a caller that wrote through it would reach into the stored rule.
108 lines
2.6 KiB
Go
108 lines
2.6 KiB
Go
package mount
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import (
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"context"
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"errors"
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"fmt"
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"path/filepath"
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"time"
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"github.com/seaweedfs/seaweedfs/weed/filer"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/mount/meta_cache"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"github.com/seaweedfs/seaweedfs/weed/util"
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)
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func (wfs *WFS) subscribeFilerConfEvents() (*meta_cache.MetadataFollower, error) {
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confDir := filer.DirectoryEtcSeaweedFS
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confName := filer.FilerConfName
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confFullName := filepath.Join(filer.DirectoryEtcSeaweedFS, filer.FilerConfName)
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// read current conf
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err := wfs.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
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content, err := filer.ReadInsideFiler(context.Background(), client, confDir, confName)
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if err != nil {
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return err
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}
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fc := filer.NewFilerConf()
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if len(content) > 0 {
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if err := fc.LoadFromBytes(content); err != nil {
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return fmt.Errorf("parse %s: %v", confFullName, err)
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}
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}
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wfs.FilerConf = fc
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return nil
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})
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if err != nil {
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if errors.Is(err, filer_pb.ErrNotFound) {
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glog.V(0).Infof("fuse filer conf %s not found", confFullName)
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} else {
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return nil, err
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}
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}
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processEventFn := func(resp *filer_pb.SubscribeMetadataResponse) error {
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if !isFilerConfUpdateEvent(resp, confDir, confName) {
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return nil
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}
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content := resp.EventNotification.NewEntry.Content
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fc := filer.NewFilerConf()
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if len(content) > 0 {
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if err = fc.LoadFromBytes(content); err != nil {
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return fmt.Errorf("parse %s: %v", confFullName, err)
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}
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}
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wfs.FilerConf = fc
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return nil
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}
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return &meta_cache.MetadataFollower{
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PathPrefixToWatch: confFullName,
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ProcessEventFn: processEventFn,
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}, nil
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}
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func isFilerConfUpdateEvent(resp *filer_pb.SubscribeMetadataResponse, confDir, confName string) bool {
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if resp == nil || resp.EventNotification == nil || resp.EventNotification.NewEntry == nil {
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return false
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}
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return filer_pb.MetadataEventTargetDirectory(resp) == confDir &&
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resp.EventNotification.NewEntry.Name == confName
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}
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func (wfs *WFS) wormEnforcedForEntry(path util.FullPath, entry *filer_pb.Entry) (wormEnforced, wormEnabled bool) {
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if entry == nil || wfs.FilerConf == nil {
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return false, false
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}
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rule := wfs.FilerConf.MatchStorageRule(string(path))
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if !rule.GetWorm() {
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return false, false
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}
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// worm is not enforced
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if entry.WormEnforcedAtTsNs == 0 {
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return false, true
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}
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// worm will never expire
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if rule.WormRetentionTimeSeconds == 0 {
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return true, true
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}
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enforcedAt := time.Unix(0, entry.WormEnforcedAtTsNs)
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// worm is expired
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if time.Now().Sub(enforcedAt).Seconds() >= float64(rule.WormRetentionTimeSeconds) {
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return false, true
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}
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return true, true
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}
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