@sentry/core/build/esm/utils/ratelimit.js

Base implementation for all Sentry JavaScript SDKs

import { safeDateNow } from './randomSafeContext.js';

const DEFAULT_RETRY_AFTER = 60 * 1e3;
function parseRetryAfterHeader(header, now = safeDateNow()) {
  const headerDelay = parseInt(`${header}`, 10);
  if (!isNaN(headerDelay)) {
    return headerDelay * 1e3;
  }
  const headerDate = Date.parse(`${header}`);
  if (!isNaN(headerDate)) {
    return headerDate - now;
  }
  return DEFAULT_RETRY_AFTER;
}
function disabledUntil(limits, dataCategory) {
  return limits[dataCategory] || limits.all || 0;
}
function isRateLimited(limits, dataCategory, now = safeDateNow()) {
  return disabledUntil(limits, dataCategory) > now;
}
function updateRateLimits(limits, { statusCode, headers }, now = safeDateNow()) {
  const updatedRateLimits = {
    ...limits
  };
  const rateLimitHeader = headers?.["x-sentry-rate-limits"];
  const retryAfterHeader = headers?.["retry-after"];
  if (rateLimitHeader) {
    for (const limit of rateLimitHeader.trim().split(",")) {
      const [retryAfter, categories, , , namespaces] = limit.split(":", 5);
      const headerDelay = parseInt(retryAfter, 10);
      const delay = (!isNaN(headerDelay) ? headerDelay : 60) * 1e3;
      if (!categories) {
        updatedRateLimits.all = now + delay;
      } else {
        for (const category of categories.split(";")) {
          if (category === "metric_bucket") {
            if (!namespaces || namespaces.split(";").includes("custom")) {
              updatedRateLimits[category] = now + delay;
            }
          } else {
            updatedRateLimits[category] = now + delay;
          }
        }
      }
    }
  } else if (retryAfterHeader) {
    updatedRateLimits.all = now + parseRetryAfterHeader(retryAfterHeader, now);
  } else if (statusCode === 429) {
    updatedRateLimits.all = now + 60 * 1e3;
  }
  return updatedRateLimits;
}

export { DEFAULT_RETRY_AFTER, disabledUntil, isRateLimited, parseRetryAfterHeader, updateRateLimits };
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