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package proxy
import (
"encoding/json"
"fmt"
"os"
"path/filepath"
"strings"
"time"
"cocogo/pkg/common"
"cocogo/pkg/config"
"cocogo/pkg/logger"
"cocogo/pkg/model"
)
var conf = config.Conf
type CommandRecorder struct {
Session *SwitchSession
storage CommandStorage
queue chan *model.Command
}
func NewCommandRecorder(sess *SwitchSession) (recorder *CommandRecorder) {
storage := NewCommandStorage()
recorder = &CommandRecorder{Session: sess, queue: make(chan *model.Command, 10), storage: storage}
go recorder.record()
recorder.Start()
return recorder
}
func NewReplyRecord(sess *SwitchSession) (recorder *ReplyRecorder) {
storage := NewReplayStorage()
srvStorage := &ServerReplayStorage{}
recorder = &ReplyRecorder{SessionID: sess.Id, storage: storage, backOffStorage: srvStorage}
recorder.Start()
return recorder
}
func (c *CommandRecorder) Record(command [2]string) {
if command[0] == "" && command[1] == "" {
return
}
cmd := &model.Command{
SessionId: c.Session.Id,
OrgId: c.Session.Org,
Input: command[0],
Output: command[1],
User: c.Session.User,
Server: c.Session.Server,
SystemUser: c.Session.SystemUser,
Timestamp: time.Now().Unix(),
}
c.queue <- cmd
}
func (c *CommandRecorder) Start() {
}
func (c *CommandRecorder) End() {
close(c.queue)
}
func (c *CommandRecorder) record() {
cmdList := make([]*model.Command, 0)
for {
select {
case p, ok := <-c.queue:
if !ok {
logger.Debug("Session command recorder close: ", c.Session.Id)
return
}
cmdList = append(cmdList, p)
if len(cmdList) < 5 {
continue
}
case <-time.After(time.Second * 5):
if len(cmdList) == 0 {
continue
}
}
err := c.storage.BulkSave(cmdList)
if err == nil {
cmdList = cmdList[:0]
continue
}
if len(cmdList) > 10 {
cmdList = cmdList[1:]
}
}
}
type ReplyRecorder struct {
SessionID string
absFilePath string
absGzFilePath string
target string
file *os.File
timeStartNano int64
storage ReplayStorage
backOffStorage ReplayStorage
}
func (r *ReplyRecorder) Record(b []byte) {
if len(b) > 0 {
delta := float64(time.Now().UnixNano()-r.timeStartNano) / 1000 / 1000 / 1000
data, _ := json.Marshal(string(b))
_, _ = r.file.WriteString(fmt.Sprintf(`"%.3f":%s`, delta, data))
}
}
func (r *ReplyRecorder) Start() {
rootPath := conf.RootPath
today := time.Now().UTC().Format("2006-01-02")
gzFileName := r.SessionID + ".replay.gz"
replayDir := filepath.Join(rootPath, "data", "replays", today)
r.absFilePath = filepath.Join(replayDir, r.SessionID)
r.absGzFilePath = filepath.Join(replayDir, today, gzFileName)
r.target = strings.Join([]string{today, gzFileName}, "/")
r.timeStartNano = time.Now().UnixNano()
err := common.EnsureDirExist(replayDir)
if err != nil {
logger.Errorf("Create dir %s error: %s\n", replayDir, err)
return
}
logger.Debug("Replay file path: ", r.absFilePath)
r.file, err = os.Create(r.absFilePath)
if err != nil {
logger.Errorf("Create file %s error: %s\n", r.absFilePath, err)
}
_, _ = r.file.Write([]byte("{"))
}
func (r *ReplyRecorder) End() {
_ = r.file.Close()
go r.uploadReplay()
}
func (r *ReplyRecorder) uploadReplay() {
maxRetry := 3
if !common.FileExists(r.absFilePath) {
logger.Debug("Replay file not found, passed: ", r.absFilePath)
return
}
if stat, err := os.Stat(r.absFilePath); err == nil && stat.Size() == 0 {
logger.Debug("Replay file is empty, removed: ", r.absFilePath)
_ = os.Remove(r.absFilePath)
return
}
if !common.FileExists(r.absGzFilePath) {
logger.Debug("Compress replay file: ", r.absFilePath)
_ = common.GzipCompressFile(r.absFilePath, r.absGzFilePath)
_ = os.Remove(r.absFilePath)
}
for i := 0; i <= maxRetry; i++ {
logger.Debug("Upload replay file: ", r.absGzFilePath)
err := r.storage.Upload(r.absGzFilePath, r.target)
if err == nil {
_ = os.Remove(r.absGzFilePath)
break
}
// 如果还是失败，使用备用storage再传一次
if i == maxRetry {
logger.Errorf("Using back off storage retry upload")
r.storage = r.backOffStorage
r.uploadReplay()
break
}
}
}