/
sync.go
196 lines (169 loc) · 4.07 KB
/
sync.go
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package sync
import (
"fmt"
"net/http"
"os"
"path/filepath"
"time"
"github.com/aliyun/aliyun-oss-go-sdk/oss"
"github.com/araddon/dateparse"
"github.com/briandowns/spinner"
"github.com/pkg/errors"
"pet/config"
"pet/snippet"
)
// Force Sync remote to local
func ForceSync() error {
var snippetFile = config.Conf.General.SnippetFile
var snippetDir = filepath.Dir(snippetFile)
err := removeContents(snippetDir)
if err != nil {
return errors.Wrap(err, "Failed to clean local data dir")
}
objectKeys, err := listObjects()
if err != nil {
return err
}
for _, objectKey := range objectKeys {
config.Conf.General.SnippetFile = filepath.Join(snippetDir, objectKey)
err = AutoSync(config.Conf.General.SnippetFile)
if err != nil {
return err
}
}
fmt.Println("Sync success")
return nil
}
// AutoSync syncs snippets automatically
func AutoSync(file string) error {
ossMeta, err := getObjectMeta(file)
if err != nil {
return err
}
lastModified, ok := ossMeta["Last-Modified"]
if !ok {
return upload(ok)
}
fi, err := os.Stat(file)
if os.IsNotExist(err) {
return download()
} else if err != nil {
return errors.Wrap(err, "Failed to get a FileInfo")
}
local := fi.ModTime().UTC()
remote, err := dateparse.ParseLocal(lastModified[0])
if err != nil {
return errors.Wrap(err, "Failed to get a FileInfo")
}
switch {
case local.After(remote):
return upload(ok)
case remote.After(local):
return download()
default:
return nil
}
}
func RemoveSync(file string) error {
var snippetName = filepath.Base(file)
err := os.Remove(file)
if err != nil && !os.IsNotExist(err) {
return errors.Wrap(err, "Failed to delete local file")
}
client := aliOSSClient()
err = client.DeleteObject(snippetName)
if err != nil {
return errors.Wrapf(err, "%s delete remote error", snippetName)
}
fmt.Println("Delete success")
return nil
}
func getObjectMeta(file string) (http.Header, error) {
s := spinner.New(spinner.CharSets[14], 100*time.Millisecond)
s.Start()
s.Suffix = " Getting Object..."
defer s.Stop()
var snippetName = filepath.Base(file)
client := aliOSSClient()
props, err := client.GetObjectDetailedMeta(snippetName)
if err != nil {
if len(props) == 0 {
return props, nil
}
return nil, errors.Wrapf(err, "Failed to get object")
}
return props, nil
}
func listObjects() (objectKeys []string, err error) {
client := aliOSSClient()
lsRes, err := client.ListObjects()
if err != nil {
return nil, errors.Wrapf(err, "Failed to list objects")
}
for _, object := range lsRes.Objects {
objectKeys = append(objectKeys, object.Key)
}
return objectKeys, nil
}
func upload(remoteExist bool) (err error) {
var snippetFile = config.Conf.General.SnippetFile
var snippetName = filepath.Base(snippetFile)
var snippets snippet.Snippets
if err := snippets.Load(); err != nil {
return err
}
body, err := snippets.ToString()
if err != nil {
return err
}
if len(body) == 0 {
if remoteExist {
return download()
}
fmt.Printf("%s is empty, skip sync\n", snippetName)
return nil
}
client := aliOSSClient()
err = client.PutObjectFromFile(snippetName, snippetFile)
if err != nil {
return errors.Wrapf(err, "%s upload error", snippetName)
}
fmt.Println("Upload success")
return nil
}
func download() error {
var snippetFile = config.Conf.General.SnippetFile
var snippetName = filepath.Base(snippetFile)
client := aliOSSClient()
err := client.GetObjectToFile(snippetName, snippetFile)
if err != nil {
return errors.Wrapf(err, "%s download error", snippetName)
}
fmt.Println("Already up-to-date")
return nil
}
func aliOSSClient() *oss.Bucket {
client, _ := oss.New(
config.Conf.AliOSS.Endpoint, config.Conf.AliOSS.AccessID, config.Conf.AliOSS.AccessKey,
)
bucket, _ := client.Bucket(config.Conf.AliOSS.BucketName)
return bucket
}
func removeContents(dir string) error {
d, err := os.Open(dir)
if err != nil {
return err
}
defer d.Close()
names, err := d.Readdirnames(-1)
if err != nil {
return err
}
for _, name := range names {
err = os.RemoveAll(filepath.Join(dir, name))
if err != nil {
return err
}
}
return nil
}