8000 [RateLimiter][Security] Improve performance of login/request rate limiter by Seldaek · Pull Request #46110 · symfony/symfony · GitHub
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[RateLimiter][Security] Improve performance of login/request rate limiter #46110

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Merged
merged 5 commits into from
Jul 24, 2022
Merged

[RateLimiter][Security] Improve performance of login/request rate limiter #46110

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a029188
Allow consuming 0 tokens to peek at the token storage
Seldaek Apr 19, 2022
9a2ec0c
Add PeekableRequestRateLimiterInterface and fix the LoginThrottlingLi…
Seldaek Apr 19, 2022
c3415a1
Make sure the retryAfter date is always set on RateLimit even when pe…
Seldaek Apr 19, 2022
679fa91
Add missing return type
Seldaek May 5, 2022
5c360db
[RateLimiter] Fix peeking in token bucket/fixed window and add tests
wouterj Jul 24, 2022
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Make sure the retryAfter date is always set on RateLimit even when pe… 
…eking/consuming 0 tokens
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@Seldaek @wouterj
Seldaek authored and wouterj committed Jul 24, 2022
commit c3415a1ed4f6c5e96d984d211fc56afdf54610a7
6 changes: 3 additions & 3 deletions src/Symfony/Component/RateLimiter/Policy/FixedWindowLimiter.php
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Original file line number Diff line number Diff line change
Expand Up @@ -59,13 +59,13 @@ public function reserve(int $tokens = 1, float $maxTime = null): Reservation

$now = microtime(true);
$availableTokens = $window->getAvailableTokens($now);
$waitDuration = $window->calculateTimeForTokens(max(1, $tokens));

if ($availableTokens >= $tokens) {
$window->add($tokens, $now);

$reservation = new Reservation($now, new RateLimit($window->getAvailableTokens($now), \DateTimeImmutable::createFromFormat('U', floor($now)), true, $this->limit));
$reservation = new Reservation($now, new RateLimit($window->getAvailableTokens($now), \DateTimeImmutable::createFromFormat('U', floor($now + $waitDuration)), true, $this->limit));
} else {
$waitDuration = $window->calculateTimeForTokens($tokens);

if (null !== $maxTime && $waitDuration > $maxTime) {
// process needs to wait longer than set interval
throw new MaxWaitDurationExceededException(sprintf('The rate limiter wait time ("%d" seconds) is longer than the provided maximum time ("%d" seconds).', $waitDuration, $maxTime), new RateLimit($window->getAvailableTokens($now), \DateTimeImmutable::createFromFormat('U', floor($now + $waitDuration)), false, $this->limit));
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8 changes: 4 additions & 4 deletions src/Symfony/Component/RateLimiter/Policy/TokenBucketLimiter.php
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Expand Up @@ -67,16 +67,16 @@ public function reserve(int $tokens = 1, float $maxTime = null): Reservation

$now = microtime(true);
$availableTokens = $bucket->getAvailableTokens($now);
$remainingTokens = $tokens - $availableTokens;
$waitDuration = $this->rate->calculateTimeForTokens(max(1, $remainingTokens));

if ($availableTokens >= $tokens) {
// tokens are now available, update bucket
$bucket->setTokens($availableTokens - $tokens);
$bucket->setTimer($now);

$reservation = new Reservation($now, new RateLimit($bucket->getAvailableTokens($now), \DateTimeImmutable::createFromFormat('U', floor($now)), true, $this->maxBurst));
$reservation = new Reservation($now, new RateLimit($bucket->getAvailableTokens($now), 52F6 \DateTimeImmutable::createFromFormat('U', floor($now + $waitDuration)), true, $this->maxBurst));
} else {
$remainingTokens = $tokens - $availableTokens;
$waitDuration = $this->rate->calculateTimeForTokens($remainingTokens);

if (null !== $maxTime && $waitDuration > $maxTime) {
// process needs to wait longer than set interval
$rateLimit = new RateLimit($availableTokens, \DateTimeImmutable::createFromFormat('U', floor($now + $waitDuration)), false, $this->maxBurst);
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