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package filer2
import (
"context"
"fmt"
"io"
"strings"
"time"
"github.com/golang/protobuf/proto"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/notification"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/util"
)
func (f *Filer) NotifyUpdateEvent(oldEntry, newEntry *Entry, deleteChunks bool) {
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
}
newParentPath := ""
if newEntry != nil {
newParentPath, _ = newEntry.FullPath.DirAndName()
}
eventNotification := &filer_pb.EventNotification{
OldEntry: oldEntry.ToProtoEntry(),
NewEntry: newEntry.ToProtoEntry(),
DeleteChunks: deleteChunks,
NewParentPath: newParentPath,
}
if notification.Queue != nil {
glog.V(3).Infof("notifying entry update %v", fullpath)
notification.Queue.SendMessage(fullpath, eventNotification)
}
f.logMetaEvent(fullpath, eventNotification)
}
func (f *Filer) logMetaEvent(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
}
f.MetaLogBuffer.AddToBuffer([]byte(dir), data)
}
func (f *Filer) logFlushFunc(startTime, stopTime time.Time, buf []byte) {
targetFile := fmt.Sprintf("%s/%04d-%02d-%02d/%02d-%02d.segment", SystemLogDir,
startTime.Year(), startTime.Month(), startTime.Day(), startTime.Hour(), startTime.Minute(),
// startTime.Second(), startTime.Nanosecond(),
)
if err := f.appendToFile(targetFile, buf); err != nil {
glog.V(0).Infof("log write failed %s: %v", targetFile, err)
}
}
func (f *Filer) ReadPersistedLogBuffer(startTime time.Time, eachLogEntryFn func(logEntry *filer_pb.LogEntry) error) error {
startDate := fmt.Sprintf("%04d-%02d-%02d", startTime.Year(), startTime.Month(), startTime.Day())
startHourMinute := fmt.Sprintf("%02d-%02d.segment", startTime.Hour(), startTime.Minute())
sizeBuf := make([]byte, 4)
startTsNs := startTime.UnixNano()
dayEntries, listDayErr := f.ListDirectoryEntries(context.Background(), SystemLogDir, startDate, true, 366)
if listDayErr != nil {
return fmt.Errorf("fail to list log by day: %v", listDayErr)
}
for _, dayEntry := range dayEntries {
// println("checking day", dayEntry.FullPath)
hourMinuteEntries, listHourMinuteErr := f.ListDirectoryEntries(context.Background(), util.NewFullPath(SystemLogDir, dayEntry.Name()), "", false, 24*60)
if listHourMinuteErr != nil {
return fmt.Errorf("fail to list log %s by day: %v", dayEntry.Name(), listHourMinuteErr)
}
for _, hourMinuteEntry := range hourMinuteEntries {
// println("checking hh-mm", hourMinuteEntry.FullPath)
if dayEntry.Name() == startDate {
if strings.Compare(hourMinuteEntry.Name(), startHourMinute) < 0 {
continue
}
}
// println("processing", hourMinuteEntry.FullPath)
chunkedFileReader := NewChunkStreamReaderFromFiler(f.MasterClient, hourMinuteEntry.Chunks)
if err := readEachLogEntry(chunkedFileReader, sizeBuf, startTsNs, eachLogEntryFn); err != nil {
chunkedFileReader.Close()
if err == io.EOF {
break
}
return err
}
chunkedFileReader.Close()
}
}
return nil
}
func readEachLogEntry(r io.Reader, sizeBuf []byte, ns int64, eachLogEntryFn func(logEntry *filer_pb.LogEntry) error) error {
for {
n, err := r.Read(sizeBuf)
if err != nil {
return err
}
if n != 4 {
return fmt.Errorf("size %d bytes, expected 4 bytes", n)
}
size := util.BytesToUint32(sizeBuf)
entryData := make([]byte, size)
n, err = r.Read(entryData)
if err != nil {
return err
}
if n != int(size) {
return fmt.Errorf("entry data %d bytes, expected %d bytes", n, size)
}
logEntry := &filer_pb.LogEntry{}
if err = proto.Unmarshal(entryData, logEntry); err != nil {
return err
}
if logEntry.TsNs <= ns {
return nil
}
// println("each log: ", logEntry.TsNs)
if err := eachLogEntryFn(logEntry); err != nil {
return err
}
}
}
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