Support evaluating quotas as bigint

- Value we get from vault is number, but converted into bigint
  internally
- Value from the BucketInfo class is already bigint
- Comparison will use the number received from Scuba as a bigint
- Values may be imprecise but comparing with bigint ensures
  the comparison is correct as per the received values

Issue: CLDSRV-606

lib/api/api.js

@@ -272,7 +272,7 @@ const api = {
             if (err) {
                 return callback(err);
             }
-            request.accountQuotas = BigInt(infos?.accountQuota || 0);
+            request.accountQuotas = infos?.accountQuotas;
             if (authorizationResults) {
                 const checkedResults = checkAuthResults(authorizationResults);
                 if (checkedResults instanceof Error) {

lib/api/apiUtils/quotas/quotaUtils.js

@@ -122,7 +122,7 @@ function _evaluateQuotas(
                         return parallelDone(err);
                     }
                     if (!isMetricStale(bucketMetrics, 'bucket', bucket.getName(), action, inflight, log) &&
-                        bucketMetrics.bytesTotal + inflightForCheck > bucketQuota) {
+                        BigInt(bucketMetrics.bytesTotal || 0) + BigInt(inflightForCheck || 0) > bucketQuota) {
                         log.debug('Bucket quota exceeded', {
                             bucket: bucket.getName(),
                             action,
@@ -147,8 +147,9 @@ function _evaluateQuotas(
                     if (err || inflight < 0) {
                         return parallelDone(err);
                     }
+                    // Metrics are served as BigInt strings
                     if (!isMetricStale(accountMetrics, 'account', account.account, action, inflight, log) &&
-                        accountMetrics.bytesTotal + inflightForCheck > accountQuota) {
+                        BigInt(accountMetrics.bytesTotal || 0) + BigInt(inflightForCheck || 0) > accountQuota) {
                         log.debug('Account quota exceeded', {
                             accountId: account.account,
                             action,
@@ -215,8 +216,9 @@ function validateQuotas(request, bucket, account, apiNames, apiMethod, inflight,
     let accountQuotaExceeded = false;
     let quotaEvaluationDuration;
     const requestStartTime = process.hrtime.bigint();
-    const bucketQuota = bucket.getQuota();
-    const accountQuota = account?.quota || 0;
+    const bucketQuota = bucket.getQuota() || 0n;
+    // Quota is sent as a number by the authorization service
+    const accountQuota = BigInt(account?.quota || 0);
     const shouldSendInflights = config.isQuotaInflightEnabled();
 
     if (bucketQuota && accountQuota) {
@@ -231,8 +233,8 @@ function validateQuotas(request, bucket, account, apiNames, apiMethod, inflight,
         type = 'delete';
     }
 
-    if ((bucketQuota <= 0 && accountQuota <= 0) || !QuotaService?.enabled) {
-        if (bucketQuota > 0 || accountQuota > 0) {
+    if ((bucketQuota <= 0n && accountQuota <= 0n) || !QuotaService?.enabled) {
+        if (bucketQuota > 0n || accountQuota > 0n) {
             log.warn('quota is set for a bucket, but the quota service is disabled', {
                 bucketName: bucket.getName(),
             });

lib/routes/routeBackbeat.js

@@ -1436,7 +1436,7 @@ function routeBackbeat(clientIP, request, response, log) {
                 return responseJSONBody(err, null, response, log);
             }
             // eslint-disable-next-line no-param-reassign
-            request.accountQuotas = BigInt(infos?.accountQuota || 0);
+            request.accountQuotas = infos?.accountQuotas;
             // FIXME for now, any authenticated user can access API
             // routes. We should introduce admin accounts or accounts
             // with admin privileges, and restrict access to those