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<?php
namespace Jaeger\Tests\Sampler;
use Cache\Adapter\PHPArray\ArrayCachePool;
use Jaeger\Sampler\RateLimitingSampler;
use Jaeger\Util\RateLimiter;
use PHPUnit\Framework\TestCase;
use const Jaeger\SAMPLER_PARAM_TAG_KEY;
use const Jaeger\SAMPLER_TYPE_RATE_LIMITING;
use const Jaeger\SAMPLER_TYPE_TAG_KEY;
class RateLimitSamplerTest extends TestCase
{
/**
* @test
* @dataProvider maxRateProvider
* @param integer $maxTracesPerSecond
* @param bool $decision
* @throws
*/
public function shouldDetermineWhetherOrTraceShouldBeSampled($maxTracesPerSecond, $decision)
{
$sampler = new RateLimitingSampler(
$maxTracesPerSecond,
new RateLimiter(new ArrayCachePool(), 'balance', 'lastTick')
);
$sampler->isSampled();
list($sampled, $tags) = $sampler->isSampled();
$this->assertEquals($decision, $sampled);
$this->assertEquals([
SAMPLER_TYPE_TAG_KEY => SAMPLER_TYPE_RATE_LIMITING,
SAMPLER_PARAM_TAG_KEY => $maxTracesPerSecond,
], $tags);
$sampler->close();
}
public function maxRateProvider()
{
return [
[1000000, true],
[1, false],
[0, false],
];
}
}
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