Enum StorageEngine 

pub enum StorageEngine {
    Bundle,
    Packchain,
}

Identifies the on-bucket storage format / serialisation engine.

engine is a bucket-level property: once written to the FORMAT key on the first push, it is validated on every subsequent connect. The ?engine= URL parameter is advisory — it is only meaningful when initialising a new repository. After the first push the stored value is authoritative and the URL parameter is checked for conflicts.

Variants

Bundle

Git bundle v2 — a text header followed by a PACK file.

Key layout: <prefix>/refs/heads/<branch>/<sha>.bundle.

Packchain

Incremental pack-chain engine (issue #52).

On-bucket layout: chain.json (newest-first manifest) plus path-index.json per ref, with content-addressed packs at <prefix>/packs/<sha>.{pack,idx} and a baseline bundle for first-push fan-out. Push, fetch, direct file access (read_blob library API), compaction, and GC are all implemented; see src/packchain/{push,fetch,read,compact,gc}.rs.

Implementations

impl StorageEngine

pub const fn as_str(self) -> &'static str

The canonical name for this engine, as stored in the FORMAT key and accepted in the ?engine= URL parameter.

Trait Implementations

impl Clone for StorageEngine

fn clone(&self) -> StorageEngine

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for StorageEngine

impl Debug for StorageEngine

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for StorageEngine

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for StorageEngine

impl PartialEq for StorageEngine

fn eq(&self, other: &StorageEngine) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for StorageEngine