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package filer2
import (
"bytes"
"fmt"
"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,
}
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) ReadLogBuffer(lastReadTime time.Time, eachEventFn func(fullpath string, eventNotification *filer_pb.EventNotification) error) (newLastReadTime time.Time, err error) {
var bytesBuf *bytes.Buffer
bytesBuf = f.MetaLogBuffer.ReadFromBuffer(lastReadTime)
if bytesBuf == nil {
return
}
defer f.MetaLogBuffer.ReleaseMeory(bytesBuf)
buf := bytesBuf.Bytes()
var processedTs int64
for pos := 0; pos+4 < len(buf); {
size := util.BytesToUint32(buf[pos : pos+4])
entryData := buf[pos+4 : pos+4+int(size)]
logEntry := &filer_pb.LogEntry{}
err = proto.Unmarshal(entryData, logEntry)
if err != nil {
glog.Errorf("unexpected unmarshal filer_pb.LogEntry: %v", err)
return lastReadTime, fmt.Errorf("unexpected unmarshal filer_pb.LogEntry: %v", err)
}
event := &filer_pb.SubscribeMetadataResponse{}
err = proto.Unmarshal(logEntry.Data, event)
if err != nil {
glog.Errorf("unexpected unmarshal filer_pb.SubscribeMetadataResponse: %v", err)
return lastReadTime, fmt.Errorf("unexpected unmarshal filer_pb.SubscribeMetadataResponse: %v", err)
}
err = eachEventFn(event.Directory, event.EventNotification)
processedTs = logEntry.TsNs
if err != nil {
newLastReadTime = time.Unix(0, processedTs)
return
}
pos += 4 + int(size)
}
newLastReadTime = time.Unix(0, processedTs)
return
}
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