62 lines
1.8 KiB
JavaScript
62 lines
1.8 KiB
JavaScript
'use strict';
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const RATE_LIMIT_ENDPOINTS_GROUPS = {
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QUERY: 'query',
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JOB_CREATE: 'job_create',
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JOB_GET: 'job_get',
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JOB_DELETE: 'job_delete',
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COPY_FROM: 'copy_from',
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COPY_TO: 'copy_to'
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};
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function rateLimit(userLimits, endpointGroup = null) {
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if (!isRateLimitEnabled(endpointGroup)) {
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return function rateLimitDisabledMiddleware(req, res, next) { next(); };
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}
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return function rateLimitMiddleware(req, res, next) {
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userLimits.getRateLimit(res.locals.user, endpointGroup, function(err, userRateLimit) {
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if (err) {
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return next(err);
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}
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if (!userRateLimit) {
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return next();
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}
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const [isBlocked, limit, remaining, retry, reset] = userRateLimit;
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res.set({
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'Carto-Rate-Limit-Limit': limit,
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'Carto-Rate-Limit-Remaining': remaining,
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'Carto-Rate-Limit-Reset': reset
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});
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if (isBlocked) {
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// retry is floor rounded in seconds by redis-cell
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res.set('Retry-After', retry + 1);
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const rateLimitError = new Error(
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'You are over platform\'s limits. Please contact us to know more details'
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);
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rateLimitError.http_status = 429;
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rateLimitError.context = 'limit';
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rateLimitError.detail = 'rate-limit';
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return next(rateLimitError);
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}
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return next();
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});
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};
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}
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function isRateLimitEnabled(endpointGroup) {
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return global.settings.ratelimits.rateLimitsEnabled &&
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endpointGroup &&
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global.settings.ratelimits.endpoints[endpointGroup];
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}
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module.exports = rateLimit;
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module.exports.RATE_LIMIT_ENDPOINTS_GROUPS = RATE_LIMIT_ENDPOINTS_GROUPS;
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