update

projects/priceservice/vendor/symfony/rate-limiter/Policy/FixedWindowLimiter.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\RateLimiter\Policy;
+
+use Symfony\Component\Lock\LockInterface;
+use Symfony\Component\RateLimiter\Exception\MaxWaitDurationExceededException;
+use Symfony\Component\RateLimiter\LimiterInterface;
+use Symfony\Component\RateLimiter\RateLimit;
+use Symfony\Component\RateLimiter\Reservation;
+use Symfony\Component\RateLimiter\Storage\StorageInterface;
+use Symfony\Component\RateLimiter\Util\TimeUtil;
+
+/**
+ * @author Wouter de Jong <wouter@wouterj.nl>
+ */
+final class FixedWindowLimiter implements LimiterInterface
+{
+    use ResetLimiterTrait;
+
+    private int $limit;
+    private int $interval;
+
+    public function __construct(string $id, int $limit, \DateInterval $interval, StorageInterface $storage, ?LockInterface $lock = null)
+    {
+        if ($limit < 1) {
+            throw new \InvalidArgumentException(\sprintf('Cannot set the limit of "%s" to 0, as that would never accept any hit.', __CLASS__));
+        }
+
+        $this->storage = $storage;
+        $this->lock = $lock;
+        $this->id = $id;
+        $this->limit = $limit;
+        $this->interval = TimeUtil::dateIntervalToSeconds($interval);
+    }
+
+    public function reserve(int $tokens = 1, ?float $maxTime = null): Reservation
+    {
+        if ($tokens > $this->limit) {
+            throw new \InvalidArgumentException(\sprintf('Cannot reserve more tokens (%d) than the size of the rate limiter (%d).', $tokens, $this->limit));
+        }
+
+        $this->lock?->acquire(true);
+
+        try {
+            $window = $this->storage->fetch($this->id);
+            if (!$window instanceof Window) {
+                $window = new Window($this->id, $this->interval, $this->limit);
+            }
+
+            $now = microtime(true);
+            $availableTokens = $window->getAvailableTokens($now);
+
+            if (0 === $tokens) {
+                $waitDuration = $window->calculateTimeForTokens(1, $now);
+                $reservation = new Reservation($now + $waitDuration, new RateLimit($window->getAvailableTokens($now), \DateTimeImmutable::createFromFormat('U', floor($now + $waitDuration)), true, $this->limit));
+            } elseif ($availableTokens >= $tokens) {
+                $window->add($tokens, $now);
+
+                $reservation = new Reservation($now, new RateLimit($window->getAvailableTokens($now), \DateTimeImmutable::createFromFormat('U', floor($now)), true, $this->limit));
+            } else {
+                $waitDuration = $window->calculateTimeForTokens($tokens, $now);
+
+                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));
+                }
+
+                $window->add($tokens, $now);
+
+                $reservation = new Reservation($now + $waitDuration, new RateLimit($window->getAvailableTokens($now), \DateTimeImmutable::createFromFormat('U', floor($now + $waitDuration)), false, $this->limit));
+            }
+
+            if (0 < $tokens) {
+                $this->storage->save($window);
+            }
+        } finally {
+            $this->lock?->release();
+        }
+
+        return $reservation;
+    }
+
+    public function consume(int $tokens = 1): RateLimit
+    {
+        try {
+            return $this->reserve($tokens, 0)->getRateLimit();
+        } catch (MaxWaitDurationExceededException $e) {
+            return $e->getRateLimit();
+        }
+    }
+
+    public function getAvailableTokens(int $hitCount): int
+    {
+        return $this->limit - $hitCount;
+    }
+}