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package mount
import (
"errors"
"fmt"
"path/filepath"
"time"
"github.com/seaweedfs/seaweedfs/weed/filer"
"github.com/seaweedfs/seaweedfs/weed/util/log"
"github.com/seaweedfs/seaweedfs/weed/mount/meta_cache"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"github.com/seaweedfs/seaweedfs/weed/util"
)
func (wfs *WFS) subscribeFilerConfEvents() (*meta_cache.MetadataFollower, error) {
confDir := filer.DirectoryEtcSeaweedFS
confName := filer.FilerConfName
confFullName := filepath.Join(filer.DirectoryEtcSeaweedFS, filer.FilerConfName)
// read current conf
err := wfs.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
content, err := filer.ReadInsideFiler(client, confDir, confName)
if err != nil {
return err
}
fc := filer.NewFilerConf()
if len(content) > 0 {
if err := fc.LoadFromBytes(content); err != nil {
return fmt.Errorf("parse %s: %v", confFullName, err)
}
}
wfs.FilerConf = fc
return nil
})
if err != nil {
if errors.Is(err, filer_pb.ErrNotFound) {
log.V(3).Infof("fuse filer conf %s not found", confFullName)
} else {
return nil, err
}
}
processEventFn := func(resp *filer_pb.SubscribeMetadataResponse) error {
message := resp.EventNotification
if message.NewEntry == nil {
return nil
}
dir := resp.Directory
name := resp.EventNotification.NewEntry.Name
if dir != confDir || name != confName {
return nil
}
content := message.NewEntry.Content
fc := filer.NewFilerConf()
if len(content) > 0 {
if err = fc.LoadFromBytes(content); err != nil {
return fmt.Errorf("parse %s: %v", confFullName, err)
}
}
wfs.FilerConf = fc
return nil
}
return &meta_cache.MetadataFollower{
PathPrefixToWatch: confFullName,
ProcessEventFn: processEventFn,
}, nil
}
func (wfs *WFS) wormEnforcedForEntry(path util.FullPath, entry *filer_pb.Entry) (wormEnforced, wormEnabled bool) {
if entry == nil || wfs.FilerConf == nil {
return false, false
}
rule := wfs.FilerConf.MatchStorageRule(string(path))
if !rule.Worm {
return false, false
}
// worm is not enforced
if entry.WormEnforcedAtTsNs == 0 {
return false, true
}
// worm will never expire
if rule.WormRetentionTimeSeconds == 0 {
return true, true
}
enforcedAt := time.Unix(0, entry.WormEnforcedAtTsNs)
// worm is expired
if time.Now().Sub(enforcedAt).Seconds() >= float64(rule.WormRetentionTimeSeconds) {
return false, true
}
return true, true
}
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