fs

An experimental Object Storage written in Go that should be partially compatible with S3

Features

Bucket operations:

• PUT /{bucket}
• HEAD /{bucket}
• DELETE /{bucket}
• GET / (list buckets)

Object operations:

• PUT /{bucket}/{key}
• GET /{bucket}/{key}
• HEAD /{bucket}/{key}
• DELETE /{bucket}/{key}
• GET /{bucket}?list-type=2&prefix=... (ListObjectsV2-style)

Multipart upload:

• POST /{bucket}/{key}?uploads (initiate)
• PUT /{bucket}/{key}?uploadId=...&partNumber=N (upload part)
• GET /{bucket}/{key}?uploadId=... (list parts)
• POST /{bucket}/{key}?uploadId=... (complete)
• DELETE /{bucket}/{key}?uploadId=... (abort)

Multi-object delete:

• POST /{bucket}?delete with S3-style XML body

AWS SigV4 streaming payload decoding for uploads (aws-chunked request bodies)

Authentication:

• AWS SigV4 request verification (header and presigned URL forms)
• Local credential/policy store in bbolt
• Bootstrap access key/secret via environment variables

Auth Setup

Required when AUTH_ENABLED=true:

• AUTH_MASTER_KEY must be base64 for 32 decoded bytes (AES-256 key), e.g. openssl rand -base64 32
• AUTH_BOOTSTRAP_ACCESS_KEY and AUTH_BOOTSTRAP_SECRET_KEY define initial credentials

Reference: auth/README.md

Health:

• GET /healthz
• HEAD /healthz
• GET /metrics (Prometheus exposition format)
• HEAD /metrics

Limitations

• Not full S3 API coverage.
• No versioning or lifecycle policies.
• Error and edge-case behavior is still being refined for client compatibility.

License

MIT License