Movatterモバイル変換

[0]ホーム
URL:

Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly

 Sign up
Appearance settings

Commitca7ff0a

Browse files
committed
calculateTimeForTokens for SlidingWindow
1 parent521d210 commitca7ff0a

File tree

3 files changed

+58
-15
lines changed

3 files changed

+58
-15
lines changed

‎src/Symfony/Component/RateLimiter/Policy/SlidingWindow.php‎

Lines changed: 21 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -89,6 +89,27 @@ public function getRetryAfter(): \DateTimeImmutable
8989
return \DateTimeImmutable::createFromFormat('U.u',sprintf('%.6F',$this->windowEndAt));
9090
}
9191

92+
publicfunctioncalculateTimeForTokens(int$maxSize,int$tokens):int
93+
{
94+
$remaining =$maxSize -$this->getHitCount();
95+
if ($remaining >=$tokens) {
96+
return0;
97+
}
98+
99+
$startOfWindow =$this->windowEndAt -$this->intervalInSeconds;
100+
$percentOfCurrentTimeFrame =min((microtime(true) -$startOfWindow) /$this->intervalInSeconds,1);
101+
$releasable =$maxSize -floor($this->hitCountForLastWindow * (1 -$percentOfCurrentTimeFrame));
102+
$remainingWindow = (microtime(true) -$startOfWindow) -$this->intervalInSeconds;
103+
$timePerToken =$remainingWindow /$releasable;
104+
$needed =$tokens -$remaining;
105+
106+
if ($releasable <=$needed) {
107+
return (int)ceil($needed *$timePerToken);
108+
}
109+
110+
return (int) ($this->windowEndAt -microtime(true)) +ceil(($needed -$releasable) * ($this->intervalInSeconds /$maxSize));
111+
}
112+
92113
publicfunction__serialize():array
93114
{
94115
return [

‎src/Symfony/Component/RateLimiter/Policy/SlidingWindowLimiter.php‎

Lines changed: 31 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -12,8 +12,8 @@
1212
namespaceSymfony\Component\RateLimiter\Policy;
1313

1414
useSymfony\Component\Lock\LockInterface;
15-
useSymfony\Component\RateLimiter\Exception\ReserveNotSupportedException;
1615
useSymfony\Component\RateLimiter\LimiterInterface;
16+
useSymfony\Component\RateLimiter\Exception\MaxWaitDurationExceededException;
1717
useSymfony\Component\RateLimiter\RateLimit;
1818
useSymfony\Component\RateLimiter\Reservation;
1919
useSymfony\Component\RateLimiter\Storage\StorageInterface;
@@ -48,11 +48,10 @@ public function __construct(string $id, int $limit, \DateInterval $interval, Sto
4848

4949
publicfunctionreserve(int$tokens =1,float$maxTime =null):Reservation
5050
{
51-
thrownewReserveNotSupportedException(__CLASS__);
52-
}
51+
if ($tokens >$this->limit) {
52+
thrownew \InvalidArgumentException(sprintf('Cannot reserve more tokens (%d) than the size of the rate limiter (%d).',$tokens,$this->limit));
53+
}
5354

54-
publicfunctionconsume(int$tokens =1):RateLimit
55-
{
5655
$this->lock?->acquire(true);
5756

5857
try {
@@ -63,22 +62,43 @@ public function consume(int $tokens = 1): RateLimit
6362
$window = SlidingWindow::createFromPreviousWindow($window,$this->interval);
6463
}
6564

65+
$now =microtime(true);
6666
$hitCount =$window->getHitCount();
6767
$availableTokens =$this->getAvailableTokens($hitCount);
68-
if ($availableTokens <$tokens) {
69-
returnnewRateLimit($availableTokens,$window->getRetryAfter(),false,$this->limit);
70-
}
68+
if ($availableTokens >=$tokens) {
69+
$window->add($tokens);
7170

72-
$window->add($tokens);
71+
$reservation =newReservation($now,newRateLimit($this->getAvailableTokens($window->getHitCount()), \DateTimeImmutable::createFromFormat('U',floor($now)),true,$this->limit));
72+
}else {
73+
$waitDuration =$window->calculateTimeForTokens($this->limit,max(1,$tokens));
74+
75+
if (null !==$maxTime &&$waitDuration >$maxTime) {
76+
// process needs to wait longer than set interval
77+
thrownewMaxWaitDurationExceededException(sprintf('The rate limiter wait time ("%d" seconds) is longer than the provided maximum time ("%d" seconds).',$waitDuration,$maxTime),newRateLimit($this->getAvailableTokens($window->getHitCount()), \DateTimeImmutable::createFromFormat('U',floor($now +$waitDuration)),false,$this->limit));
78+
}
79+
80+
$window->add($tokens);
81+
82+
$reservation =newReservation($now +$waitDuration,newRateLimit($this->getAvailableTokens($window->getHitCount()), \DateTimeImmutable::createFromFormat('U',floor($now +$waitDuration)),false,$this->limit));
83+
}
7384

7485
if (0 <$tokens) {
7586
$this->storage->save($window);
7687
}
77-
78-
returnnewRateLimit($this->getAvailableTokens($window->getHitCount()),$window->getRetryAfter(),true,$this->limit);
7988
}finally {
8089
$this->lock?->release();
8190
}
91+
92+
return$reservation;
93+
}
94+
95+
publicfunctionconsume(int$tokens =1):RateLimit
96+
{
97+
try {
98+
return$this->reserve($tokens,0)->getRateLimit();
99+
}catch (MaxWaitDurationExceededException$e) {
100+
return$e->getRateLimit();
101+
}
82102
}
83103

84104
privatefunctiongetAvailableTokens(int$hitCount):int

‎src/Symfony/Component/RateLimiter/Tests/Policy/SlidingWindowLimiterTest.php‎

Lines changed: 6 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -13,7 +13,6 @@
1313

1414
usePHPUnit\Framework\TestCase;
1515
useSymfony\Bridge\PhpUnit\ClockMock;
16-
useSymfony\Component\RateLimiter\Exception\ReserveNotSupportedException;
1716
useSymfony\Component\RateLimiter\Policy\SlidingWindowLimiter;
1817
useSymfony\Component\RateLimiter\RateLimit;
1918
useSymfony\Component\RateLimiter\Storage\InMemoryStorage;
@@ -66,14 +65,17 @@ public function testWaitIntervalOnConsumeOverLimit()
6665

6766
$start =microtime(true);
6867
$rateLimit->wait();// wait 12 seconds
69-
$this->assertEqualsWithDelta($start +12,microtime(true),1);
68+
$this->assertEqualsWithDelta($start + (12 /5),microtime(true),1);
69+
$this->assertTrue($limiter->consume()->isAccepted());
7070
}
7171

7272
publicfunctiontestReserve()
7373
{
74-
$this->expectException(ReserveNotSupportedException::class);
74+
$limiter =$this->createLimiter();
75+
$limiter->consume(8);
7576

76-
$this->createLimiter()->reserve();
77+
// 2 over the limit, causing the WaitDuration to become 2/10th of the 12s interval
78+
$this->assertEqualsWithDelta(12 /5,$limiter->reserve(4)->getWaitDuration(),1);
7779
}
7880

7981
publicfunctiontestPeekConsume()

0 commit comments

Comments
 (0)
[8]ページ先頭
©2009-2025 Movatter.jp