garage-unix-socket/doc/book/reference-manual/s3-compatibility.md

+++ title = "S3 Compatibility status" weight = 20 +++

Endpoint implementation

All APIs that are missing on Garage will return a 501 Not Implemented. Some x-amz- headers are not implemented.

The compatibility list for other platforms is given only for information purposes and based on available documentation. Some entries might be inexact. Feel free to open a PR to fix this table. Minio is missing because they do not provide a public S3 compatibility list.

Features

Feature	Garage	Openstack Swift	Ceph Object Gateway	Riak CS	OpenIO
signature v2 (deprecated)	❌ Missing	✅	❌	✅	✅
signature v4	✅ Implemented	✅	✅	❌	✅
URL path-style (eg. host.tld/bucket/key)	✅ Implemented	✅	✅	❓	✅
URL vhost-style URL (eg. bucket.host.tld/key)	✅ Implemented	❌	✅	✅	✅
Presigned URLs	✅ Implemented	❌	✅	✅	✅(❓)

Note: OpenIO does not says if it supports presigned URLs. Because it is part of signature v4 and they claim they support it without additional precisions, we suppose that OpenIO supports presigned URLs.

Core endoints

Endpoint	Garage	Openstack Swift	Ceph Object Gateway	Riak CS	OpenIO
CreateBucket	✅ Implemented	✅	✅	✅	✅
DeleteBucket	✅ Implemented	✅	✅	✅	✅
GetBucketLocation	✅ Implemented	✅	✅	❌	✅
HeadBucket	✅ Implemented	✅	✅	✅	✅
ListBuckets	✅ Implemented	❌	✅	✅	✅
HeadObject	✅ Implemented	✅	✅	✅	✅
CopyObject	✅ Implemented	✅	✅	✅	✅
DeleteObject	✅ Implemented	✅	✅	✅	✅
DeleteObjects	✅ Implemented	✅	✅	✅	✅
GetObject	✅ Implemented	✅	✅	✅	✅
ListObjects	✅ Implemented (see details below)	✅	✅	✅	❌
ListObjectsV2	✅ Implemented	❌	❌	❌	✅
PostObject (compatibility API)	❌ Missing	❌	✅	❌	❌
PutObject	✅ Implemented	✅	✅	✅	✅

ListObjects: Implemented, but there isn't a very good specification of what encoding-type=url covers so there might be some encoding bugs. In our implementation the url-encoded fields are in the same in ListObjects as they are in ListObjectsV2.

Note: Ceph API documentation is incomplete and miss at least HeadBucket and UploadPartCopy, but these endpoints are documented in Red Hat Ceph Storage - Chapter 2. Ceph Object Gateway and the S3 API

Multipart Upload endpoints

Endpoint	Garage	Openstack Swift	Ceph Object Gateway	Riak CS	OpenIO
AbortMultipartUpload	✅ Implemented	✅	✅	✅	✅
CompleteMultipartUpload	✅ Implemented (see details below)	✅	✅	✅	✅
CreateMultipartUpload	✅ Implemented	✅	✅	✅	✅
ListMultipartUpload	✅ Implemented	✅	✅	✅	✅
ListParts	✅ Implemented	✅	✅	✅	✅
UploadPart	✅ Implemented (see details below)	✅	✅	✅	✅
UploadPartCopy	✅ Implemented	✅	✅	✅	✅

Our implementation of Multipart Upload is currently a bit more restrictive than Amazon's one in some edge cases. For more information, please refer to our issue tracker.

Website endpoints

Endpoint	Garage	Openstack Swift	Ceph Object Gateway	Riak CS	OpenIO
DeleteBucketWebsite	✅ Implemented	❌	❌	❌	❌
GetBucketWebsite	✅ Implemented	❌	❌	❌	❌
PutBucketWebsite	⚠ Partially implemented (see below)	❌	❌	❌	❌
DeleteBucketCors	✅ Implemented	❌	❌	❌	✅
GetBucketCors	✅ Implemented	❌	❌	❌	✅
PutBucketCors	✅ Implemented	❌	❌	❌	✅

PutBucketWebsite: Implemented, but only stores the index document suffix and the error document path. Redirects are not supported.

Note: Ceph radosgw has some support for static websites but it is different from Amazon one plus it does not implement its configuration endpoints.

ACL, Policies endpoints

Amazon has 2 access control mechanisms in S3: ACL (legacy) and policies (new one). Garage implements none of them, and has its own system instead, built around a per-access-key-per-bucket logic. See Garage CLI reference manual to learn how to use Garage's permission system.

Endpoint	Garage	Openstack Swift	Ceph Object Gateway	Riak CS	OpenIO
DeleteBucketPolicy	❌ Missing	❌	❌	✅	❌
GetBucketPolicy	❌ Missing	❌	❌	⚠	❌
GetBucketPolicyStatus	❌ Missing	❌	❌	❌	❌
PutBucketPolicy	❌ Missing	❌	❌	⚠	❌
GetBucketAcl	❌ Missing	✅	✅	✅	✅
PutBucketAcl	❌ Missing	✅	✅	✅	✅
GetObjectAcl	❌ Missing	✅	✅	✅	✅
PutObjectAcl	❌ Missing	✅	✅	✅	✅

Notes: Ceph claims that it supports bucket policies but does not implement any Policy endpoints. They probably refer to their own permission system. Riak CS only supports a subset of the policy configuration.

Versioning, Lifecycle endpoints

Garage does not support (yet) object versioning. If you need this feature, please share your use case in our dedicated issue.

Endpoint	Garage	Openstack Swift	Ceph Object Gateway	Riak CS	OpenIO
DeleteBucketLifecycle	❌ Missing	❌	✅	❌	✅
GetBucketLifecycleConfiguration	❌ Missing	❌	⚠	❌	✅
PutBucketLifecycleConfiguration	❌ Missing	❌	⚠	❌	✅
GetBucketVersioning	❌ Stub (see below)	✅	✅	❌	✅
ListObjectVersions	❌ Missing	❌	✅	❌	✅
PutBucketVersioning	❌ Missing	❌	✅	❌	✅

GetBucketVersioning: Stub implementation (Garage does not yet support versionning so this always returns "versionning not enabled").

Note: Ceph only supports Expiration, NoncurrentVersionExpiration and AbortIncompleteMultipartUpload on its Lifecycle endpoints.

Replication endpoints

Please open an issue if you have a use case for replication.

Endpoint	Garage	Openstack Swift	Ceph Object Gateway	Riak CS	OpenIO
DeleteBucketReplication	❌ Missing	❌	✅	❌	❌
GetBucketReplication	❌ Missing	❌	✅	❌	❌
PutBucketReplication	❌ Missing	❌	⚠	❌	❌

Note: Ceph documentation briefly says that Ceph supports replication though the S3 API but with some limitations. Additionaly, replication endpoints are not documented in the S3 compatibility page so I don't know what kind of support we can expect.

Locking objects

Amazon defines a concept of object locking that can be achieved either through a Retention period or a Legal hold.

Endpoint	Garage	Openstack Swift	Ceph Object Gateway	Riak CS	OpenIO
GetObjectLegalHold	❌ Missing	❌	✅	❌	❌
PutObjectLegalHold	❌ Missing	❌	✅	❌	❌
GetObjectRetention	❌ Missing	❌	✅	❌	❌
PutObjectRetention	❌ Missing	❌	✅	❌	❌
GetObjectLockConfiguration	❌ Missing	❌	❌	❌	❌
PutObjectLockConfiguration	❌ Missing	❌	❌	❌	❌

(Server-side) encryption

We think that you can either encrypt your server partition or do client-side encryption, so we did not implement server-side encryption for Garage. Please open an issue if you have a use case.

Endpoint	Garage	Openstack Swift	Ceph Object Gateway	Riak CS	OpenIO
DeleteBucketEncryption	❌ Missing	❌	❌	❌	❌
GetBucketEncryption	❌ Missing	❌	❌	❌	❌
PutBucketEncryption	❌ Missing	❌	❌	❌	❌

Misc endpoints

Endpoint	Garage	Openstack Swift	Ceph Object Gateway	Riak CS	OpenIO
GetBucketNotificationConfiguration	❌ Missing	❌	✅	❌	❌
PutBucketNotificationConfiguration	❌ Missing	❌	✅	❌	❌
DeleteBucketTagging	❌ Missing	❌	❌	❌	✅
GetBucketTagging	❌ Missing	❌	❌	❌	✅
PutBucketTagging	❌ Missing	❌	❌	❌	✅
DeleteObjectTagging	❌ Missing	❌	❌	❌	✅
GetObjectTagging	❌ Missing	❌	❌	❌	✅
PutObjectTagging	❌ Missing	❌	❌	❌	✅
GetObjectTorrent	❌ Missing	❌	❌	❌	❌

Vendor specific endpoints

Display Amazon specifc endpoints

Endpoint	Garage	Openstack Swift	Ceph Object Gateway	Riak CS	OpenIO
DeleteBucketAnalyticsConfiguration	❌ Missing	❌	❌	❌	❌
DeleteBucketIntelligentTieringConfiguration	❌ Missing	❌	❌	❌	❌
DeleteBucketInventoryConfiguration	❌ Missing	❌	❌	❌	❌
DeleteBucketMetricsConfiguration	❌ Missing	❌	❌	❌	❌
DeleteBucketOwnershipControls	❌ Missing	❌	❌	❌	❌
DeletePublicAccessBlock	❌ Missing	❌	❌	❌	❌
GetBucketAccelerateConfiguration	❌ Missing	❌	❌	❌	❌
GetBucketAnalyticsConfiguration	❌ Missing	❌	❌	❌	❌
GetBucketIntelligentTieringConfiguration	❌ Missing	❌	❌	❌	❌
GetBucketInventoryConfiguration	❌ Missing	❌	❌	❌	❌
GetBucketLogging	❌ Missing	❌	❌	❌	❌
GetBucketMetricsConfiguration	❌ Missing	❌	❌	❌	❌
GetBucketOwnershipControls	❌ Missing	❌	❌	❌	❌
GetBucketRequestPayment	❌ Missing	❌	❌	❌	❌
GetPublicAccessBlock	❌ Missing	❌	❌	❌	❌
ListBucketAnalyticsConfigurations	❌ Missing	❌	❌	❌	❌
ListBucketIntelligentTieringConfigurations	❌ Missing	❌	❌	❌	❌
ListBucketInventoryConfigurations	❌ Missing	❌	❌	❌	❌
ListBucketMetricsConfigurations	❌ Missing	❌	❌	❌	❌
PutBucketAccelerateConfiguration	❌ Missing	❌	❌	❌	❌
PutBucketAnalyticsConfiguration	❌ Missing	❌	❌	❌	❌
PutBucketIntelligentTieringConfiguration	❌ Missing	❌	❌	❌	❌
PutBucketInventoryConfiguration	❌ Missing	❌	❌	❌	❌
PutBucketLogging	❌ Missing	❌	❌	❌	❌
PutBucketMetricsConfiguration	❌ Missing	❌	❌	❌	❌
PutBucketOwnershipControls	❌ Missing	❌	❌	❌	❌
PutBucketRequestPayment	❌ Missing	❌	❌	❌	❌
PutPublicAccessBlock	❌ Missing	❌	❌	❌	❌
RestoreObject	❌ Missing	❌	❌	❌	❌
SelectObjectContent	❌ Missing	❌	❌	❌	❌