s3: support for alternative s3 bucket url syntax, closes #7871

pkg/components/imguploader/imguploader.go

@@ -27,25 +27,15 @@ func NewImageUploader() (ImageUploader, error) {
 			return nil, err
 		}
 
-		bucket := s3sec.Key("bucket_url").MustString("")
+		bucketUrl := s3sec.Key("bucket_url").MustString("")
 		accessKey := s3sec.Key("access_key").MustString("")
 		secretKey := s3sec.Key("secret_key").MustString("")
-
-		region := ""
-		rBucket := regexp.MustCompile(`https?:\/\/(.*)\.s3(-([^.]+))?\.amazonaws\.com\/?`)
-		matches := rBucket.FindStringSubmatch(bucket)
-		if len(matches) == 0 {
-			return nil, fmt.Errorf("Could not find bucket setting for image.uploader.s3")
-		} else {
-			bucket = matches[1]
-			if matches[3] != "" {
-				region = matches[3]
-			} else {
-				region = "us-east-1"
-			}
+		info, err := getRegionAndBucketFromUrl(bucketUrl)
+		if err != nil {
+			return nil, err
 		}
 
-		return NewS3Uploader(region, bucket, "public-read", accessKey, secretKey), nil
+		return NewS3Uploader(info.region, info.bucket, "public-read", accessKey, secretKey), nil
 	case "webdav":
 		webdavSec, err := setting.Cfg.GetSection("external_image_storage.webdav")
 		if err != nil {
@@ -65,3 +55,37 @@ func NewImageUploader() (ImageUploader, error) {
 
 	return NopImageUploader{}, nil
 }
+
+type s3Info struct {
+	region string
+	bucket string
+}
+
+func getRegionAndBucketFromUrl(url string) (*s3Info, error) {
+	info := &s3Info{}
+	urlRegex := regexp.MustCompile(`https?:\/\/(.*)\.s3(-([^.]+))?\.amazonaws\.com\/?`)
+	matches := urlRegex.FindStringSubmatch(url)
+	if len(matches) > 0 {
+		info.bucket = matches[1]
+		if matches[3] != "" {
+			info.region = matches[3]
+		} else {
+			info.region = "us-east-1"
+		}
+		return info, nil
+	}
+
+	urlRegex2 := regexp.MustCompile(`https?:\/\/s3(-([^.]+))?\.amazonaws\.com\/(.*)?`)
+	matches2 := urlRegex2.FindStringSubmatch(url)
+	if len(matches2) > 0 {
+		info.bucket = matches2[3]
+		if matches2[2] != "" {
+			info.region = matches2[2]
+		} else {
+			info.region = "us-east-1"
+		}
+		return info, nil
+	}
+
+	return nil, fmt.Errorf("Could not find bucket setting for image.uploader.s3")
+}

pkg/components/imguploader/imguploader_test.go

@@ -10,14 +10,14 @@ import (
 
 func TestImageUploaderFactory(t *testing.T) {
 	Convey("Can create image uploader for ", t, func() {
-		Convey("S3ImageUploader", func() {
-			var err error
+		Convey("S3ImageUploader config", func() {
 			setting.NewConfigContext(&setting.CommandLineArgs{
 				HomePath: "../../../",
 			})
 
 			setting.ImageUploadProvider = "s3"
 
+			Convey("with bucket url https://foo.bar.baz.s3-us-east-2.amazonaws.com", func() {
 				s3sec, err := setting.Cfg.GetSection("external_image_storage.s3")
 				s3sec.NewKey("bucket_url", "https://foo.bar.baz.s3-us-east-2.amazonaws.com")
 				s3sec.NewKey("access_key", "access_key")
@@ -35,6 +35,43 @@ func TestImageUploaderFactory(t *testing.T) {
 				So(original.secretKey, ShouldEqual, "secret_key")
 			})
 
+			Convey("with bucket url https://s3.amazonaws.com/mybucket", func() {
+				s3sec, err := setting.Cfg.GetSection("external_image_storage.s3")
+				s3sec.NewKey("bucket_url", "https://s3.amazonaws.com/my.bucket.com")
+				s3sec.NewKey("access_key", "access_key")
+				s3sec.NewKey("secret_key", "secret_key")
+
+				uploader, err := NewImageUploader()
+
+				So(err, ShouldBeNil)
+				original, ok := uploader.(*S3Uploader)
+
+				So(ok, ShouldBeTrue)
+				So(original.region, ShouldEqual, "us-east-1")
+				So(original.bucket, ShouldEqual, "my.bucket.com")
+				So(original.accessKey, ShouldEqual, "access_key")
+				So(original.secretKey, ShouldEqual, "secret_key")
+			})
+
+			Convey("with bucket url https://s3-us-west-2.amazonaws.com/mybucket", func() {
+				s3sec, err := setting.Cfg.GetSection("external_image_storage.s3")
+				s3sec.NewKey("bucket_url", "https://s3-us-west-2.amazonaws.com/my.bucket.com")
+				s3sec.NewKey("access_key", "access_key")
+				s3sec.NewKey("secret_key", "secret_key")
+
+				uploader, err := NewImageUploader()
+
+				So(err, ShouldBeNil)
+				original, ok := uploader.(*S3Uploader)
+
+				So(ok, ShouldBeTrue)
+				So(original.region, ShouldEqual, "us-west-2")
+				So(original.bucket, ShouldEqual, "my.bucket.com")
+				So(original.accessKey, ShouldEqual, "access_key")
+				So(original.secretKey, ShouldEqual, "secret_key")
+			})
+		})
+
 		Convey("Webdav uploader", func() {
 			var err error