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google_oss.go
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/
google_oss.go
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package oss
import (
"encoding/base64"
"errors"
"io/ioutil"
"net/http"
"strconv"
"time"
"cloud.google.com/go/storage"
"github.com/latolukasz/beeorm"
"golang.org/x/net/context"
"golang.org/x/oauth2/google"
"google.golang.org/api/option"
"github.com/coretrix/hitrix/pkg/helper"
"github.com/coretrix/hitrix/service/component/clock"
"github.com/coretrix/hitrix/service/component/config"
)
type GoogleOSS struct {
client *storage.Client
clockService clock.IClock
ctx context.Context
buckets map[Bucket]*BucketConfig
accessID string
privateKey []byte
}
func NewGoogleOSS(configService config.IConfig, clockService clock.IClock, publicNamespaces, privateNamespaces []Namespace) (IProvider, error) {
ctx := context.Background()
if !helper.ExistsInDir(".oss.json", configService.GetFolderPath()) {
return nil, errors.New(configService.GetFolderPath() + "/.oss.json does not exists")
}
credentialsFile := configService.GetFolderPath() + "/.oss.json"
client, err := storage.NewClient(ctx, option.WithCredentialsFile(credentialsFile))
if err != nil {
return nil, err
}
jwtCredentialsJSONString, err := ioutil.ReadFile(credentialsFile)
if err != nil {
return nil, err
}
jwtConfig, _ := google.JWTConfigFromJSON(jwtCredentialsJSONString)
return &GoogleOSS{
client: client,
clockService: clockService,
ctx: ctx,
buckets: loadBucketsConfig(configService, publicNamespaces, privateNamespaces),
accessID: jwtConfig.Email,
privateKey: jwtConfig.PrivateKey,
}, nil
}
func (ossStorage *GoogleOSS) GetBucketConfig(bucket Bucket) *BucketConfig {
return getBucketConfig(ossStorage.buckets[bucket])
}
func (ossStorage *GoogleOSS) GetClient() interface{} {
return ossStorage.client
}
func (ossStorage *GoogleOSS) GetObjectURL(bucket Bucket, object *Object) (string, error) {
cdnURL, err := ossStorage.GetObjectCDNURL(bucket, object)
if err != nil {
return "", err
}
if cdnURL != "" {
return cdnURL, nil
}
return ossStorage.GetObjectOSSURL(bucket, object)
}
func (ossStorage *GoogleOSS) GetObjectOSSURL(bucket Bucket, object *Object) (string, error) {
ossBucketObjectAttributes, err := ossStorage.client.Bucket(ossStorage.buckets[bucket].Name).Object(object.StorageKey).Attrs(ossStorage.ctx)
if err != nil {
return "", err
}
return ossBucketObjectAttributes.MediaLink, nil
}
func (ossStorage *GoogleOSS) GetObjectCDNURL(bucket Bucket, object *Object) (string, error) {
return getObjectCDNURL(ossStorage.buckets[bucket], object.StorageKey), nil
}
func (ossStorage *GoogleOSS) GetObjectSignedURL(bucket Bucket, object *Object, expires time.Time) (string, error) {
return storage.SignedURL(ossStorage.buckets[bucket].Name,
object.StorageKey,
&storage.SignedURLOptions{
GoogleAccessID: ossStorage.accessID,
PrivateKey: ossStorage.privateKey,
Method: http.MethodGet,
Expires: expires,
})
}
func (ossStorage *GoogleOSS) GetObjectBase64Content(bucket Bucket, object *Object) (string, error) {
reader, err := ossStorage.client.Bucket(ossStorage.buckets[bucket].Name).Object(object.StorageKey).NewReader(context.Background())
if err != nil {
return "", err
}
content, err := ioutil.ReadAll(reader)
if err != nil {
return "", err
}
return base64.StdEncoding.EncodeToString(content), nil
}
func (ossStorage *GoogleOSS) UploadObjectFromFile(ormService *beeorm.Engine, bucket Bucket, namespace Namespace, localFile string) (Object, error) {
fileContent, ext, err := readContentFile(localFile)
if err != nil {
return Object{}, err
}
return ossStorage.UploadObjectFromByte(ormService, bucket, namespace, fileContent, ext)
}
func (ossStorage *GoogleOSS) UploadObjectFromBase64(ormService *beeorm.Engine, bucket Bucket, namespace Namespace, base64content, extension string) (Object, error) {
byteData, err := base64.StdEncoding.DecodeString(base64content)
if err != nil {
return Object{}, err
}
return ossStorage.UploadObjectFromByte(ormService, bucket, namespace, byteData, extension)
}
func (ossStorage *GoogleOSS) UploadImageFromBase64(ormService *beeorm.Engine, bucket Bucket, namespace Namespace, base64image, extension string) (Object, error) {
byteData, err := base64.StdEncoding.DecodeString(base64image)
if err != nil {
return Object{}, err
}
return ossStorage.UploadObjectFromByte(ormService, bucket, namespace, byteData, extension)
}
func (ossStorage *GoogleOSS) UploadImageFromFile(ormService *beeorm.Engine, bucket Bucket, namespace Namespace, localFile string) (Object, error) {
return ossStorage.UploadObjectFromFile(ormService, bucket, namespace, localFile)
}
func (ossStorage *GoogleOSS) UploadObjectFromByte(ormService *beeorm.Engine, bucket Bucket, namespace Namespace, objectContent []byte, extension string) (Object, error) {
bucketConfig := ossStorage.buckets[bucket]
bucketConfig.validateNamespace(namespace)
storageCounter := getStorageCounter(ormService, ossStorage.buckets[bucket])
objectKey := ossStorage.getObjectKey(namespace, storageCounter, extension)
ossBucketObject := ossStorage.client.Bucket(bucketConfig.Name).Object(objectKey).NewWriter(ossStorage.ctx)
//TODO Remove
ossStorage.setObjectContentType(ossBucketObject, extension)
_, err := ossBucketObject.Write(objectContent)
if err != nil {
return Object{}, err
}
err = ossBucketObject.Close()
if err != nil {
return Object{}, err
}
return Object{
ID: storageCounter,
StorageKey: objectKey,
}, nil
}
func (ossStorage *GoogleOSS) DeleteObject(_ Bucket, _ *Object) error {
panic("not implemented")
}
func (ossStorage *GoogleOSS) CreateObjectFromKey(ormService *beeorm.Engine, bucket Bucket, key string) Object {
return Object{
ID: getStorageCounter(ormService, ossStorage.buckets[bucket]),
StorageKey: key,
}
}
func (ossStorage *GoogleOSS) getObjectKey(namespace Namespace, storageCounter uint64, fileExtension string) string {
if namespace != "" {
return namespace.String() + "/" + strconv.FormatUint(storageCounter, 10) + fileExtension
}
return strconv.FormatUint(storageCounter, 10) + fileExtension
}
//TODO Remove
func (ossStorage *GoogleOSS) setObjectContentType(writer *storage.Writer, extension string) {
if writer == nil {
return
}
if extension == ".svg" && writer.ObjectAttrs.ContentType == "" {
writer.ObjectAttrs.ContentType = "image/svg+xml"
}
}