Struct Engine 

pub struct Engine { /* private fields */ }

The install engine, bound to a $VANTA_HOME.

Implementations

impl Engine

pub fn open(home: impl AsRef<Path>) -> VtaResult<Engine>

Open the engine over home ($VANTA_HOME) with the default (permissive) policy — checksum-gated, signatures verified when present. Use Engine::open_with_policy to require signatures.

pub fn open_with_policy( home: impl AsRef<Path>, policy: Policy, ) -> VtaResult<Engine>

Open the engine with an explicit verification Policy (audit H2).

pub fn with_max_decompressed(self, max: u64) -> Self

Override the decompressed-size ceiling (audit M8).

pub fn store(&self) -> &Store

Borrow the underlying store / state (for gc, which, etc.).

pub fn state(&self) -> &State

pub fn install_artifact( &self, tool: &str, version: &str, artifact: &Artifact, ) -> VtaResult<StoreKey>

Install one resolved artifact for the current platform, returning its store key. Fetch → verify → materialize → publish → commit a generation. A store hit short-circuits fetch/verify/materialize.

pub fn install_artifact_reported( &self, tool: &str, version: &str, artifact: &Artifact, reporter: &dyn Reporter, ) -> VtaResult<StoreKey>

Like Engine::install_artifact, but drives reporter with download byte counts and phase transitions so a caller can render progress.

pub fn bundle_current(&self, out: &Path) -> VtaResult<usize>

Bundle the active generation’s store entries into a portable archive (docs/13-offline.md). Returns the number of entries written.

pub fn restore(&self, bundle: &Path) -> VtaResult<usize>

Restore store entries from a bundle, verifying each entry’s integrity against its content-addressed key. Returns the number newly imported.

pub fn remove(&self, tool: &str) -> VtaResult<bool>

Remove a tool: record a new generation without it and unlink its primary executable. Returns whether the tool was present.