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package filer2
import (
"fmt"
"strings"
"sync"
"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 key string
if oldEntry != nil {
key = string(oldEntry.FullPath)
} else if newEntry != nil {
key = string(newEntry.FullPath)
} else {
return
}
println("key:", key)
if strings.HasPrefix(key, "/.meta") {
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", key)
notification.Queue.SendMessage(key, eventNotification)
}
f.logMetaEvent(time.Now(), key, eventNotification)
}
func (f *Filer) logMetaEvent(ts time.Time, dir string, eventNotification *filer_pb.EventNotification) {
event := &filer_pb.FullEventNotification{
Directory: dir,
EventNotification: eventNotification,
}
data, err := proto.Marshal(event)
if err != nil {
glog.Errorf("failed to marshal filer_pb.FullEventNotification %+v: %v", event, err)
return
}
f.metaLogBuffer.AddToBuffer(ts, []byte(dir), data)
}
func (f *Filer) logFlushFunc(startTime, stopTime time.Time, buf []byte) {
targetFile := fmt.Sprintf("/.meta/log/%04d/%02d/%02d/%02d/%02d/%02d-%02d.log",
startTime.Year(), startTime.Month(), startTime.Day(), startTime.Hour(), startTime.Minute(),
startTime.Second(), stopTime.Second())
if err := f.appendToFile(targetFile, buf); err != nil {
glog.V(0).Infof("log write failed %s: %v", targetFile, err)
}
}
type LogBuffer struct {
buf []byte
pos int
startTime time.Time
stopTime time.Time
sizeBuf []byte
flushInterval time.Duration
flushFn func(startTime, stopTime time.Time, buf []byte)
sync.Mutex
}
func NewLogBuffer(flushInterval time.Duration, flushFn func(startTime, stopTime time.Time, buf []byte)) *LogBuffer {
lb := &LogBuffer{
buf: make([]byte, 4*0124*1024),
sizeBuf: make([]byte, 4),
flushInterval: 2 * time.Second, // flushInterval,
flushFn: flushFn,
}
go lb.loopFlush()
return lb
}
func (m *LogBuffer) loopFlush() {
for {
m.Lock()
m.flush()
m.Unlock()
time.Sleep(m.flushInterval)
}
}
func (m *LogBuffer) flush() {
if m.flushFn != nil && m.pos > 0 {
m.flushFn(m.startTime, m.stopTime, m.buf[:m.pos])
m.pos = 0
}
}
func (m *LogBuffer) AddToBuffer(ts time.Time, key, data []byte) {
logEntry := &filer_pb.LogEntry{
TsNs: ts.UnixNano(),
PartitionKeyHash: util.HashToInt32(key),
Data: data,
}
logEntryData, _ := proto.Marshal(logEntry)
size := len(logEntryData)
m.Lock()
defer m.Unlock()
if m.pos == 0 {
m.startTime = ts
}
if m.startTime.Add(m.flushInterval).Before(ts) || len(m.buf)-m.pos < size+4 {
m.flush()
m.startTime = ts
}
m.stopTime = ts
util.Uint32toBytes(m.sizeBuf, uint32(size))
copy(m.buf[m.pos:m.pos+4], m.sizeBuf)
copy(m.buf[m.pos+4:m.pos+4+size], logEntryData)
m.pos += size + 4
}
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