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Expose bounded post-build Source Check failures to authors (#641)

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Quixos Development Agent 01f26965-84fa-4a79-8069-725682c13065
2026-10-31 14:48:20 +00:00
parent 6f5b5265b6
commit 94ddc8bedf
1 changed files with 15 additions and 5 deletions
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src/execution-world/metadata.ts
+15 -5
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@@ -1,6 +1,13 @@
import { constants } from "node:fs";
import { open } from "node:fs/promises";
const admissionFailure = (
code: string,
kind: "file-bytes" | "total-bytes" | "owner-bytes" | "candidates",
measured: number,
limit: number,
) => Object.assign(Error(code), { metadataAdmission: { kind, measured, limit } });
/** Admission estimates, not a hard V8 heap limit. A process/cgroup ceiling is
* still required. Charge input, parse trees and derived indexes before reading
* or parsing. Each live candidate retains its reservation until explicit close. */
@@ -27,7 +34,8 @@ export class CandidateMetadataBudget {
}
acquire(owner: string) {
if (!owner || owner.length > 4096) throw Error("INVALID_CANDIDATE_METADATA_OWNER");
if (this.scopes >= this.limits.candidates) throw Error("CANDIDATE_METADATA_LIMIT");
if (this.scopes >= this.limits.candidates)
throw admissionFailure("CANDIDATE_METADATA_LIMIT", "candidates", this.scopes + 1, this.limits.candidates);
this.scopes++;
let bytes = 0,
closed = false;
@@ -35,8 +43,10 @@ export class CandidateMetadataBudget {
if (closed) throw Error("CANDIDATE_METADATA_CLOSED");
if (!Number.isSafeInteger(amount) || amount < 0) throw Error("INVALID_CANDIDATE_METADATA_CHARGE");
const owned = this.owners.get(owner) ?? 0;
if (this.bytes + amount > this.limits.bytes || owned + amount > this.limits.ownerBytes)
throw Error("CANDIDATE_METADATA_LIMIT");
if (this.bytes + amount > this.limits.bytes)
throw admissionFailure("CANDIDATE_METADATA_LIMIT", "total-bytes", this.bytes + amount, this.limits.bytes);
if (owned + amount > this.limits.ownerBytes)
throw admissionFailure("CANDIDATE_METADATA_LIMIT", "owner-bytes", owned + amount, this.limits.ownerBytes);
bytes += amount;
this.bytes += amount;
this.owners.set(owner, owned + amount);
@@ -116,8 +126,8 @@ export async function readCandidateMetadata(
let releaseInput: (() => void) | undefined;
try {
const stat = await handle.stat();
if (!stat.isFile() || !Number.isSafeInteger(stat.size) || stat.size > limit)
throw Error("CANDIDATE_METADATA_FILE_LIMIT");
if (!stat.isFile() || !Number.isSafeInteger(stat.size)) throw Error("CANDIDATE_METADATA_FILE_LIMIT");
if (stat.size > limit) throw admissionFailure("CANDIDATE_METADATA_FILE_LIMIT", "file-bytes", stat.size, limit);
// Reserve the input buffer and UTF-16 decoding before allocating either.
releaseInput = scope.reserve((stat.size + 1) * 3);
const bytes = Buffer.alloc(stat.size + 1);