Struct DevStore 

pub struct DevStore {
    pub endpoint: String,
    pub bucket: String,
    pub access_key_id: String,
    pub secret_access_key: String,
    pub provenance: StoreProvenance,
}

Coordinates of the dev object store this process talks to, and where they came from. Handed to consumers (build-child env, discovery file, the in-process V8 SSR runtime) so they can point an S3 client at it.

Fields

endpoint: String

e.g. http://127.0.0.1:54321 — no trailing slash, path-style.

bucket: String

The dev bucket: the camp’s per-workspace one, or EMBEDDED_BUCKET.

access_key_id: String

secret_access_key: String

provenance: StoreProvenance

Which of the two providers supplied the fields above.

Implementations

impl DevStore

pub async fn resolve(state_dir: impl AsRef<Path>) -> Result<DevStore>

Resolve the dev object store, preferring the camp’s and falling back to an embedded one rooted at <state_dir>/s3.

Three cases, and the middle one is the reason this is not a plain unwrap_or_else:

• All four S3_* set — a yah camp injected them. Use the camp’s store, so mes and every other app in the camp share one bucket.
• Some but not all set — a configuration error, not a fallback signal. Somebody meant to use the camp’s store and got it half-wired; silently starting a second, empty store would hide that behind a dev loop that looks fine until a published object is missing. Bails naming exactly which vars are absent.
• None set — standalone (mes . on a scaffolded project, the invocation the scaffold’s README gives). Start the embedded surface.

R584-T1 deleted the embedded arm on the premise that a camp is always there; it was restored 2026-09-17 after the standalone tier of check-mesofact-new.sh — which runs mes with no camp at all — failed on exactly that premise for six days.

pub fn env_vars(&self) -> Vec<(String, String)>

Conventional env vars mesofact-dev injects so a workload’s [sources.r2] can resolve in dev: R2_ENDPOINT, R2_BUCKET, R2_ACCESS_KEY_ID, R2_SECRET_ACCESS_KEY.

Trait Implementations

impl Clone for DevStore

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DevStore

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

Formats the value using the given formatter.