The field name 'Schema' was confusing given it holds a *TableMetadata struct
and serializes as 'metadata' in JSON. Rename to 'Metadata' for clarity and
consistency with the JSON tag and intended meaning.
- Remove dead URL unescape for namespace (regex [a-z0-9_]+ cannot contain
percent-escapes)
- Add URL decoding and validation of extracted table name via
validateTableName() to prevent callers from bypassing request validation
done in other paths
Enforce the same bucket name validation rules (length, characters, reserved
prefixes/suffixes) when extracting from ARN. This prevents accepting ARNs
that the system would never create and ensures consistency with
CreateTableBucket validation.
Relaxed regex validation in utils.go to support hyphens in S3 Tables
namespaces and table names, improving consistency with S3 bucket naming
and allowing derived names from services like S3 Storage Lens.
- Pre-compile regex patterns as package-level variables to avoid re-compilation overhead on every call
- Add a random component to version token generation to reduce collision probability under high concurrency
- Prohibit path traversal (".", "..") and "/" in namespaces
- Restrict namespace characters to [a-z0-9_] for consistency
- Switch to url.PathUnescape for correct decoding of ARN path components
- Align ARN parsing regex with single-segment namespace validation
- Add multi-segment namespace support to ARN parsing
- Refactor permission checking to use map lookup
- Wrap lookup errors with ErrNotFound in filer operations
- Standardize splitPath to use path package
- Move ARN parsing, path helpers, and metadata structures to utils.go
- Extract all extended attribute and filer operations to filer_ops.go
- Reduces code duplication and improves modularity
- Improves code organization and maintainability
