BlobDescriptor class

Metadata describing a blob stored in a BlossomCache.

The shape mirrors the descriptor returned by Blossom servers (BUD-02), so it can be serialized over a protocol boundary if needed.

Constructors

BlobDescriptor({required String sha256, required int size, required DateTime uploadedAt, DateTime? lastAccessedAt, String? type, bool pinned = false})

Properties

hashCode → int

The hash code for this object.

no setter, override

lastAccessedAt → DateTime

When the blob was last read via BlossomCache.get. Equal to uploadedAt for blobs that have never been read. Not updated by BlossomCache.head, BlossomCache.pin, or BlossomCache.unpin.

final

pinned → bool

When true, automatic eviction (e.g. by BoundedBlossomCache) must skip this blob. Manual BlossomCache.delete still works regardless.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

sha256 → String

The sha256 of the blob's bytes, lowercase hex.

final

size → int

Size of the blob in bytes.

final

type → String?

MIME type, if known.

final

uploadedAt → DateTime

When the blob was added to the cache.

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson() → Map<String, Object?>

JSON shape compatible with Blossom protocol responses. The accessed field is a local extension and not part of the standard Blossom spec.

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override