Struct ManifestStore 

pub struct ManifestStore { /* private fields */ }

Manifest persistence helpers.

Separated from event_log so the hot append path does not carry serialization concerns, and so open can cheaply probe the manifest before deciding whether to run the O(n) scan.

Implementations

impl ManifestStore

pub fn new(session_dir: PathBuf) -> Self

Create a new manifest store for the given session directory.

pub fn manifest_path(&self) -> PathBuf

Path to manifest.json inside the session directory.

pub fn turns_path(&self) -> PathBuf

Path to index/turns.json inside the session directory.

pub fn load_manifest( &self, ) -> Result<Option<SessionManifest>, SessionStoreError>

Load the manifest if it exists and is parseable.

Returns Ok(None) when the file is missing (fresh session) or unreadable, rather than erroring — the caller can fall back to scanning the event log.

pub fn load_turn_index(&self) -> Result<Option<TurnIndex>, SessionStoreError>

Load the turn index if it exists and is parseable.

Returns Ok(None) when the file is missing or unreadable.

pub fn write_manifest( &self, manifest: &SessionManifest, ) -> Result<(), SessionStoreError>

Atomically write the manifest. Parent directories must already exist.

pub fn write_turn_index( &self, index: &TurnIndex, ) -> Result<(), SessionStoreError>

Atomically write the turn index. Parent directories must already exist.