Function getSession

server/src/training-agent/state.ts:309–336

(key: string)

 * machines see each other's writes.
 */
export async function getSession(key: string): Promise<SessionState> {
  const ctx = requestCtx.getStore();
  if (ctx) {
    const cached = ctx.sessions.get(key);
    if (cached) return cached;
  }

  let session: SessionState | undefined;
  try {
    const storedShape = await getStore().get<Record<string, unknown>>(SESSIONS_COLLECTION, key);
    if (storedShape) session = deserializeSession(storedShape);
  } catch (err) {
    logger.warn({ err, key }, 'Failed to load session from store; creating fresh');
  }
  if (!session) {
    session = createSession();
  }
  session.lastAccessedAt = new Date();

  if (ctx) {
    ctx.sessions.set(key, session);
    // Snapshot the round-trip shape (serialize after deserialize) so any
    // normalization done by (de)serialize doesn't register as a mutation.
    // stableStringify drops lastAccessedAt so "touch-only" reads don't flush.
    ctx.snapshots.set(key, stableStringify(serializeSession(session, key)));
  }
  return session;
}


const MAX_DOMAIN_LEN = 253; // RFC 1035 max hostname length