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package filer
import (
"context"
"fmt"
"io"
"regexp"
"strings"
"time"
"github.com/seaweedfs/seaweedfs/weed/util/log_buffer"
"google.golang.org/protobuf/proto"
"github.com/seaweedfs/seaweedfs/weed/glog"
"github.com/seaweedfs/seaweedfs/weed/notification"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"github.com/seaweedfs/seaweedfs/weed/util"
)
func (f *Filer) NotifyUpdateEvent(ctx context.Context, oldEntry, newEntry *Entry, deleteChunks, isFromOtherCluster bool, signatures []int32) {
var fullpath string
if oldEntry != nil {
fullpath = string(oldEntry.FullPath)
} else if newEntry != nil {
fullpath = string(newEntry.FullPath)
} else {
return
}
// println("fullpath:", fullpath)
if strings.HasPrefix(fullpath, SystemLogDir) {
return
}
foundSelf := false
for _, sig := range signatures {
if sig == f.Signature {
foundSelf = true
}
}
if !foundSelf {
signatures = append(signatures, f.Signature)
}
newParentPath := ""
if newEntry != nil {
newParentPath, _ = newEntry.FullPath.DirAndName()
}
eventNotification := &filer_pb.EventNotification{
OldEntry: oldEntry.ToProtoEntry(),
NewEntry: newEntry.ToProtoEntry(),
DeleteChunks: deleteChunks,
NewParentPath: newParentPath,
IsFromOtherCluster: isFromOtherCluster,
Signatures: signatures,
}
if notification.Queue != nil {
glog.V(3).Infof("notifying entry update %v", fullpath)
if err := notification.Queue.SendMessage(fullpath, eventNotification); err != nil {
// throw message
glog.Error(err)
}
}
f.logMetaEvent(ctx, fullpath, eventNotification)
// Trigger empty folder cleanup for local events
// Remote events are handled via MetaAggregator.onMetadataChangeEvent
f.triggerLocalEmptyFolderCleanup(oldEntry, newEntry)
}
func (f *Filer) logMetaEvent(ctx context.Context, fullpath string, eventNotification *filer_pb.EventNotification) {
dir, _ := util.FullPath(fullpath).DirAndName()
event := &filer_pb.SubscribeMetadataResponse{
Directory: dir,
EventNotification: eventNotification,
TsNs: time.Now().UnixNano(),
}
data, err := proto.Marshal(event)
if err != nil {
glog.Errorf("failed to marshal filer_pb.SubscribeMetadataResponse %+v: %v", event, err)
return
}
if err := f.LocalMetaLogBuffer.AddDataToBuffer([]byte(dir), data, event.TsNs); err != nil {
glog.Errorf("failed to add data to log buffer for %s: %v", dir, err)
}
}
// triggerLocalEmptyFolderCleanup triggers empty folder cleanup for local events
// This is needed because onMetadataChangeEvent is only called for remote peer events
func (f *Filer) triggerLocalEmptyFolderCleanup(oldEntry, newEntry *Entry) {
if f.EmptyFolderCleaner == nil || !f.EmptyFolderCleaner.IsEnabled() {
return
}
eventTime := time.Now()
// Handle delete events (oldEntry exists, newEntry is nil)
if oldEntry != nil && newEntry == nil {
dir, name := oldEntry.FullPath.DirAndName()
f.EmptyFolderCleaner.OnDeleteEvent(dir, name, oldEntry.IsDirectory(), eventTime)
}
// Handle create events (oldEntry is nil, newEntry exists)
if oldEntry == nil && newEntry != nil {
dir, name := newEntry.FullPath.DirAndName()
f.EmptyFolderCleaner.OnCreateEvent(dir, name, newEntry.IsDirectory())
}
// Handle rename/move events (both exist but paths differ)
if oldEntry != nil && newEntry != nil {
oldDir, oldName := oldEntry.FullPath.DirAndName()
newDir, newName := newEntry.FullPath.DirAndName()
if oldDir != newDir || oldName != newName {
// Treat old location as delete
f.EmptyFolderCleaner.OnDeleteEvent(oldDir, oldName, oldEntry.IsDirectory(), eventTime)
// Treat new location as create
f.EmptyFolderCleaner.OnCreateEvent(newDir, newName, newEntry.IsDirectory())
}
}
}
func (f *Filer) logFlushFunc(logBuffer *log_buffer.LogBuffer, startTime, stopTime time.Time, buf []byte, minOffset, maxOffset int64) {
if len(buf) == 0 {
return
}
startTime, stopTime = startTime.UTC(), stopTime.UTC()
targetFile := fmt.Sprintf("%s/%04d-%02d-%02d/%02d-%02d.%08x", SystemLogDir,
startTime.Year(), startTime.Month(), startTime.Day(), startTime.Hour(), startTime.Minute(), f.UniqueFilerId,
// startTime.Second(), startTime.Nanosecond(),
)
for {
if err := f.appendToFile(targetFile, buf); err != nil {
glog.V(0).Infof("metadata log write failed %s: %v", targetFile, err)
time.Sleep(737 * time.Millisecond)
} else {
break
}
}
}
var (
VolumeNotFoundPattern = regexp.MustCompile(`volume \d+? not found`)
)
func (f *Filer) ReadPersistedLogBuffer(startPosition log_buffer.MessagePosition, stopTsNs int64, eachLogEntryFn log_buffer.EachLogEntryFuncType) (lastTsNs int64, isDone bool, err error) {
visitor, visitErr := f.collectPersistedLogBuffer(startPosition, stopTsNs)
if visitErr != nil {
if visitErr == io.EOF {
return
}
err = fmt.Errorf("reading from persisted logs: %w", visitErr)
return
}
var logEntry *filer_pb.LogEntry
for {
logEntry, visitErr = visitor.GetNext()
if visitErr != nil {
if visitErr == io.EOF {
break
}
err = fmt.Errorf("read next from persisted logs: %w", visitErr)
return
}
isDone, visitErr = eachLogEntryFn(logEntry)
if visitErr != nil {
err = fmt.Errorf("process persisted log entry: %w", visitErr)
return
}
lastTsNs = logEntry.TsNs
if isDone {
return
}
}
return
}
|
