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VariObjectStorage - Implementation Status

This document tracks the implementation progress of S3 API features and backend support.

Status Legend

Icon Status Description
⬜ Not Started Feature has not been implemented yet
🟡 In Progress Feature is currently being developed
✅ Complete Feature is fully implemented and tested
⚠️ Partial Feature is partially implemented with limitations
❌ Not Planned Feature will not be implemented

S3 API Feature Support

Bucket Operations

Feature Status Completion
CreateBucket ✅ Complete 100%
DeleteBucket ✅ Complete 100%
HeadBucket ✅ Complete 100%
ListBuckets ✅ Complete 100%
GetBucketLocation ❌ Not Started Returns 501 - not universally supported
GetBucketVersioning ❌ No Returns 501 - not universally supported
PutBucketVersioning ❌ No Returns 501 - not universally supported
GetBucketAcl ⬜ Not Started 0%
PutBucketAcl ⬜ Not Started 0%
GetBucketPolicy ⬜ Not Started 0%
PutBucketPolicy ⬜ Not Started 0%
DeleteBucketPolicy ⬜ Not Started 0%
GetBucketCors ❌ No Returns 501 - not universally supported
PutBucketCors ❌ No Returns 501 - not universally supported
DeleteBucketCors ❌ No Returns 501 - not universally supported
GetBucketLifecycle ❌ No Returns 501 - lifecycle semantics differ across backends
PutBucketLifecycle ❌ No Returns 501 - lifecycle semantics differ across backends
DeleteBucketLifecycle ❌ No Returns 501 - lifecycle semantics differ across backends
GetBucketTagging ✅ Complete 100% - keys normalized to lowercase
PutBucketTagging ✅ Complete 100% - keys normalized to lowercase
DeleteBucketTagging ✅ Complete 100%

Bucket Operations Total: 76% (16/21 core operations complete)

Object Operations

Feature Status Completion
PutObject ✅ Complete 100%
GetObject ✅ Complete 100%
HeadObject ✅ Complete 100%
DeleteObject ✅ Complete 100%
DeleteObjects (Bulk) ✅ Complete 100%
CopyObject ✅ Complete 100%
ListObjects ✅ Complete 100%
ListObjectsV2 ✅ Complete 100%
ListObjectVersions ❌ No Returns 501 - not universally supported
GetObjectAcl ⬜ Not Started 0%
PutObjectAcl ⬜ Not Started 0%
GetObjectTagging ✅ Complete 100%
PutObjectTagging ✅ Complete 100%
DeleteObjectTagging ✅ Complete 100%
RestoreObject ❌ No Returns 501 - archive semantics differ
Byte-Range Fetches ✅ Complete 100%

Object Operations Total: 87% (14/16 core operations complete)

Multipart Upload Operations

Feature Status Completion
CreateMultipartUpload ✅ Complete 100%
UploadPart ✅ Complete 100%
UploadPartCopy ✅ Complete 100%
CompleteMultipartUpload ✅ Complete 100%
AbortMultipartUpload ✅ Complete 100%
ListMultipartUploads ✅ Complete 100%
ListParts ✅ Complete 100%

Multipart Upload Operations Total: 100% (7/7 operations complete)

Presigned URLs

Feature Status Completion
Presigned GET ⬜ Not Started 0%
Presigned PUT ⬜ Not Started 0%
Presigned DELETE ⬜ Not Started 0%

Presigned URLs Total: 0% (0/3 operations complete)

Authentication & Authorization

Feature Status Completion
AWS Signature V4 ✅ Complete 100%
STS AssumeRole ⬜ Not Started 0%
IAM Policies ⬜ Not Started 0%

Authentication & Authorization Total: 33% (1/3 features complete)

Advanced Features

Feature Status Completion
Server-Side Encryption (SSE-S3) ⬜ Not Started 0%
Server-Side Encryption (SSE-C) ⬜ Not Started 0%
Server-Side Encryption (SSE-KMS) ⬜ Not Started 0%
Object Lock ⬜ Not Started 0%
Object Retention ⬜ Not Started 0%
Legal Hold ⬜ Not Started 0%
Conditional Reads (If-Match, etc.) ⬜ Not Started 0%
Content-MD5 Validation ⬜ Not Started 0%
ETag Support ✅ Complete 100%

Advanced Features Total: 11% (1/9 features complete)

Overall Progress

Category Progress
Bucket Operations 76%
Object Operations 87%
Multipart Upload Operations 100%
Presigned URLs 0%
Authentication & Authorization 33%
Advanced Features 11%
Overall ~52%

Backend Support

Backend Status Notes
Amazon S3 (aws-s3) ✅ Complete All core operations implemented
Azure Blob Storage (azblob) ✅ Complete All core operations implemented
Google Cloud Storage (gcs) ✅ Complete All core operations implemented
Local Disk (disk) ✅ Complete All core operations implemented; stores data in local filesystem

Known Limitations

Bucket Tagging

  • Tag Key Case Normalization: Bucket tag keys are normalized to lowercase for consistent behavior across all backends. For example, Environment becomes environment. This is enforced at the API handler level.