Add forcepathstyle parameter for s3

Signed-off-by: duanhongyi <duanhongyi@doopai.com>

docs/configuration.md

@@ -118,6 +118,7 @@ storage:
     secretkey: awssecretkey
     region: us-west-1
     regionendpoint: http://myobjects.local
+    forcepathstyle: true
     accelerate: false
     bucket: bucketname
     encrypt: true
@@ -423,6 +424,7 @@ storage:
     secretkey: awssecretkey
     region: us-west-1
     regionendpoint: http://myobjects.local
+    forcepathstyle: true
     accelerate: false
     bucket: bucketname
     encrypt: true

docs/storage-drivers/s3.md

@@ -13,8 +13,9 @@ Amazon S3 or S3 compatible services for object storage.
 |:--------------|:---------|:--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | `accesskey` | no     | Your AWS Access Key. If you use [IAM roles](http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/iam-roles-for-amazon-ec2.html), omit to fetch temporary credentials from IAM. |
 | `secretkey`  | no   | Your AWS Secret Key. If you use [IAM roles](http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/iam-roles-for-amazon-ec2.html), omit to fetch temporary credentials from IAM. |
-| `region` |  yes  | The AWS region in which your bucket exists. For the moment, the Go AWS library in use does not use the newer DNS based bucket routing. |
+| `region` |  yes  | The AWS region in which your bucket exists. |
 | `regionendpoint` | no | Endpoint for S3 compatible storage services (Minio, etc). |
+| `forcepathstyle` | no | To enable path-style addressing when the value is set to `true`. The default is `true`. |
 | `bucket`  | yes | The bucket name in which you want to store the registry's data. |
 | `encrypt`  | no | Specifies whether the registry stores the image in encrypted format or not. A boolean value. The default is `false`. |
 | `keyid`  | no | Optional KMS key ID to use for encryption (encrypt must be true, or this parameter is ignored). The default is `none`. |
@@ -35,6 +36,8 @@ Amazon S3 or S3 compatible services for object storage.
 
 `regionendpoint`: (optional) Endpoint URL for S3 compatible APIs. This should not be provided when using Amazon S3.
 
+`forcepathstyle`: (optional) The force path style for S3 compatible APIs. Some manufacturers only support force path style, while others only support DNS based bucket routing. Amazon S3 supports both.
+
 `bucket`: The name of your S3 bucket where you wish to store objects. The bucket must exist prior to the driver initialization.
 
 `encrypt`: (optional) Whether you would like your data encrypted on the server side (defaults to false if not specified).

registry/storage/driver/s3-aws/s3.go

@@ -88,6 +88,7 @@ type DriverParameters struct {
 	Bucket                      string
 	Region                      string
 	RegionEndpoint              string
+	ForcePathStyle              bool
 	Encrypt                     bool
 	KeyID                       string
 	Secure                      bool
@@ -189,6 +190,23 @@ func FromParameters(parameters map[string]interface{}) (*Driver, error) {
 		regionEndpoint = ""
 	}
 
+	forcePathStyleBool := true
+	forcePathStyle := parameters["forcepathstyle"]
+	switch forcePathStyle := forcePathStyle.(type) {
+	case string:
+		b, err := strconv.ParseBool(forcePathStyle)
+		if err != nil {
+			return nil, fmt.Errorf("the forcePathStyle parameter should be a boolean")
+		}
+		forcePathStyleBool = b
+	case bool:
+		forcePathStyleBool = forcePathStyle
+	case nil:
+		// do nothing
+	default:
+		return nil, fmt.Errorf("the forcePathStyle parameter should be a boolean")
+	}
+
 	regionName := parameters["region"]
 	if regionName == nil || fmt.Sprint(regionName) == "" {
 		return nil, fmt.Errorf("no region parameter provided")
@@ -401,6 +419,7 @@ func FromParameters(parameters map[string]interface{}) (*Driver, error) {
 		fmt.Sprint(bucket),
 		region,
 		fmt.Sprint(regionEndpoint),
+		forcePathStyleBool,
 		encryptBool,
 		fmt.Sprint(keyID),
 		secureBool,
@@ -473,8 +492,8 @@ func New(params DriverParameters) (*Driver, error) {
 	}
 
 	if params.RegionEndpoint != "" {
-		awsConfig.WithS3ForcePathStyle(true)
 		awsConfig.WithEndpoint(params.RegionEndpoint)
+		awsConfig.WithS3ForcePathStyle(params.ForcePathStyle)
 	}
 
 	awsConfig.WithS3UseAccelerate(params.Accelerate)

registry/storage/driver/s3-aws/s3_test.go

@@ -41,6 +41,7 @@ func init() {
 	objectACL := os.Getenv("S3_OBJECT_ACL")
 	root, err := ioutil.TempDir("", "driver-")
 	regionEndpoint := os.Getenv("REGION_ENDPOINT")
+	forcePathStyle := os.Getenv("AWS_S3_FORCE_PATH_STYLE")
 	sessionToken := os.Getenv("AWS_SESSION_TOKEN")
 	useDualStack := os.Getenv("S3_USE_DUALSTACK")
 	combineSmallPart := os.Getenv("MULTIPART_COMBINE_SMALL_PART")
@@ -82,6 +83,13 @@ func init() {
 				return nil, err
 			}
 		}
+		forcePathStyleBool := true
+		if forcePathStyle != "" {
+			forcePathStyleBool, err = strconv.ParseBool(forcePathStyle)
+			if err != nil {
+				return nil, err
+			}
+		}
 
 		useDualStackBool := false
 		if useDualStack != "" {
@@ -110,6 +118,7 @@ func init() {
 			bucket,
 			region,
 			regionEndpoint,
+			forcePathStyleBool,
 			encryptBool,
 			keyID,
 			secureBool,