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Copy pathbackup.go
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262 lines (248 loc) · 6 KB
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Copy pathbackup.go
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262 lines (248 loc) · 6 KB
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package process
import (
"fmt"
"os"
"os/exec"
"path"
"path/filepath"
"regexp"
"strings"
"sync"
"time"
"github.com/ModuleAB/ModuleAB/agent/client"
"github.com/ModuleAB/ModuleAB/agent/logger"
"github.com/ModuleAB/ModuleAB/server/models"
"github.com/aliyun/aliyun-oss-go-sdk/oss"
"golang.org/x/exp/inotify"
)
const (
// UseLowMemoryMode should open running with memory < 1G
UseLowMemoryMode = true
// Will use gzip
UseCompress = true
)
// BackupManager module
type BackupManager struct {
JobList []string
client.AliConfig
Watcher *inotify.Watcher
host *models.Hosts
LowMemoryMode bool
Compress bool
PreserveFile bool
}
// NewBackupManager is to create a new `BackupManager` instance
func NewBackupManager(config client.AliConfig, lowmemory bool, compress bool, preservefile bool) (*BackupManager, error) {
var err error
b := new(BackupManager)
b.JobList = make([]string, 0)
b.AliConfig = config
b.Watcher, err = inotify.NewWatcher()
b.LowMemoryMode = lowmemory
b.Compress = compress
b.PreserveFile = preservefile
if err != nil {
return nil, err
}
return b, nil
}
// Update is to configure `BackupManager` instance with path to be monitored.
func (b *BackupManager) Update(ps []*models.Paths) error {
for _, v := range ps {
found := false
for _, v0 := range b.JobList {
if v.Path == v0 {
found = true
break
}
}
if found {
continue
}
err := b.Watcher.AddWatch(
v.Path, inotify.IN_CLOSE_WRITE|inotify.IN_MOVED_TO)
if err != nil {
logger.AppLog.Warning("Monitor start failed:", err)
continue
}
logger.AppLog.Info("Monitor for", v.Path, "started.")
b.JobList = append(b.JobList, v.Path)
}
for k, v := range b.JobList {
found := false
for _, v0 := range ps {
if v0.Path == v {
found = true
break
}
}
if !found {
err := b.Watcher.RemoveWatch(v)
if err != nil {
logger.AppLog.Warning("Monitor stop failed:", err)
continue
}
logger.AppLog.Info("Monitor for", k, "stopped.")
b.JobList = append(b.JobList[:k], b.JobList[k+1:]...)
}
}
return nil
}
// Run is to start `BackupManager` instance.
func (b *BackupManager) Run(h *models.Hosts) {
logger.AppLog.Info("Backup process started.")
for {
select {
case event := <-b.Watcher.Event:
logger.AppLog.Debug("Get event:", event)
for _, v := range h.Paths {
filename, err := filepath.Abs(event.Name)
if err != nil {
logger.AppLog.Warn("Failed to fetch path:", err)
continue
}
if strings.HasPrefix(filename, v.Path) {
if b.LowMemoryMode {
b.doBackup(v, filename, h, event.Name)
} else {
go b.doBackup(v, filename, h, event.Name)
}
}
}
}
}
}
/* Params:
* v *models.Paths
* filename string -- file full path
* h *models.Hosts
* eName string -- file path from inotify
*/
func (b *BackupManager) doBackup(v *models.Paths, filename string, h *models.Hosts, eName string) {
defer func() {
x := recover()
if x != nil {
logger.AppLog.Warn(
fmt.Sprintf("Error While Uploading \"%s\", for reason %v", filename, x),
)
}
}()
if v.BackupSet == nil {
logger.AppLog.Warn("No BackupSet or AppSet got, skip")
return
}
_, file := path.Split(strings.TrimSpace(filename))
file = time.Now().Format("2006/01/02") + "/" + file
if b.Compress {
if !regexp.MustCompile("\\.gz$|\\.zip$|\\.tgz$|\\.bz2").MatchString(eName) {
gz := exec.Command("gzip", eName)
err := gz.Run()
if err != nil {
logger.AppLog.Warn(eName, "Compress Failed.")
} else {
logger.AppLog.Debug(eName, " Will upload compressed file.")
return
}
}
}
record := &models.Records{
Filename: file,
Host: h,
BackupSet: v.BackupSet,
AppSet: h.AppSet,
Path: v,
Type: models.RecordTypeBackup,
BackupTime: time.Now(),
}
logger.AppLog.Debug("Now is:", time.Now().Format(time.RFC3339))
logger.AppLog.Debug("Record:", record)
ossclient, err := oss.New(
v.BackupSet.Oss.Endpoint, b.ApiKey, b.ApiSecret)
if err != nil {
logger.AppLog.Warn("Error while connect to oss:", err)
fmt.Println("Error while connect to oss:", err)
return
}
bucket, err := ossclient.Bucket(v.BackupSet.Oss.BucketName)
if err != nil {
logger.AppLog.Warn(
"Error while retrievaling bucket:", err)
fmt.Println(
"Error while retrievaling bucket:", err)
return
}
ps := strings.Split(path.Dir(record.GetFullPath()), "/")
var (
dir string
lock sync.Mutex
dirCreated = true
isRecoverFile = false
)
lock.Lock()
logger.AppLog.Debug("recoverdFiles is:", recoverdFiles)
for k, v := range recoverdFiles {
if eName == v {
recoverdFiles = append(recoverdFiles[:k], recoverdFiles[k+1:]...)
isRecoverFile = true
}
}
lock.Unlock()
if isRecoverFile {
logger.AppLog.Info("File", eName, "is recover file.")
return
}
for delay := 0; delay <= 50; delay += 10 {
if delay > 0 {
logger.AppLog.Info("Retry in", delay, "Minutes")
time.Sleep(time.Duration(delay) * time.Minute)
}
for _, p := range ps {
dir = fmt.Sprintf("%s%s/", dir, p)
err = bucket.PutObject(dir, strings.NewReader(""))
if err != nil {
logger.AppLog.Warn(
"Error while making dir on bucket:", err)
fmt.Println(
"Error while making dir on bucket:", err)
dirCreated = false
break
}
}
if !dirCreated {
continue
}
err = bucket.UploadFile(
record.GetFullPath(),
eName,
100*1024*1024,
)
if err != nil {
logger.AppLog.Warn(
"Error while uploading:", err)
fmt.Println(
"Error while uploading:", err)
continue
}
if strings.HasSuffix(eName, ".gz") && !b.PreserveFile {
err := os.Remove(eName)
logger.AppLog.Warn(
"Error while removing:", err)
fmt.Println(
"Error while removing:", err)
}
err = client.UploadRecord(record)
if err != nil {
logger.AppLog.Warn(
"Error while recording:", err)
fmt.Println(
"Error while recording:", err)
continue
}
return
}
logger.AppLog.Warn("Backup file:", eName, "Failed.")
err = client.FailLog(h, eName)
if err != nil {
logger.AppLog.Warn("Upload FailLog failed:", err)
}
}