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fix(github): hold monthly-exhausted accounts until reset

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Lock GitHub Copilot connections account-wide until 00:00 UTC on the
first of next month when the upstream 402 response indicates the
monthly additional-usage-limit was hit, instead of only cooling down
the requested model for 120s. Other GitHub 402 responses keep the
existing model-scoped cooldown.
This commit is contained in:
ryanngit
2026-08-05 10:59:49 +07:00
committed by decolua
parent 9138c99391
commit 3292dfc102
2 changed files with 104 additions and 2 deletions
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20
src/sse/services/auth.js
View File

@@ -8,6 +8,15 @@ import * as log from "../utils/logger.js";
// Mutex to prevent race conditions during account selection
let selectionMutex = Promise.resolve();
const GITHUB_MONTHLY_USAGE_LIMIT = "you've reached your additional usage limit for your plan";
function githubMonthlyResetMs(status, errorText, provider) {
if (resolveProviderId(provider) !== "github" || Number(status) !== 402) return null;
if (!String(errorText || "").toLowerCase().includes(GITHUB_MONTHLY_USAGE_LIMIT)) return null;
const now = new Date();
return Date.UTC(now.getUTCFullYear(), now.getUTCMonth() + 1, 1);
}
/**
* Get provider credentials from localDb
* Filters out unavailable accounts and returns the selected account based on strategy
@@ -213,9 +222,16 @@ export async function markAccountUnavailable(connectionId, status, errorText, pr
const conn = connections.find(c => c.id === connectionId);
const backoffLevel = conn?.backoffLevel || 0;
// GitHub premium-request exhaustion is account-wide until the next UTC month.
const githubResetAtMs = githubMonthlyResetMs(status, errorText, provider);
// Provider-specific precise cooldown (e.g. codex usage_limit_reached resets_at) overrides backoff
let shouldFallback, cooldownMs, newBackoffLevel;
if (resetsAtMs && resetsAtMs > Date.now()) {
if (githubResetAtMs) {
shouldFallback = true;
cooldownMs = githubResetAtMs - Date.now();
newBackoffLevel = 0;
} else if (resetsAtMs && resetsAtMs > Date.now()) {
shouldFallback = true;
cooldownMs = Math.min(resetsAtMs - Date.now(), MAX_RATE_LIMIT_COOLDOWN_MS);
newBackoffLevel = 0;
@@ -225,7 +241,7 @@ export async function markAccountUnavailable(connectionId, status, errorText, pr
if (!shouldFallback) return { shouldFallback: false, cooldownMs: 0 };
const reason = typeof errorText === "string" ? errorText.slice(0, 100) : "Provider error";
const lockUpdate = buildModelLockUpdate(model, cooldownMs);
const lockUpdate = buildModelLockUpdate(githubResetAtMs ? null : model, cooldownMs);
await updateProviderConnection(connectionId, {
...lockUpdate,