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tests/Composer/Test/Util/Http/CurlDownloaderTest.php
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<?php declare(strict_types=1);
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Composer\Test\Util\Http;
use Composer\IO\BufferIO;
use Composer\IO\IOInterface;
use Composer\Test\TestCase;
use Composer\Util\Http\CurlDownloader;
use Composer\Util\Http\Response;
class CurlDownloaderTest extends TestCase
{
protected function setUp(): void
{
if (!extension_loaded('curl')) {
self::markTestSkipped('curl extension is required');
}
}
public function testRetryAfterIsReadAsDelaySeconds(): void
{
self::assertSame(42, self::parseRetryAfter($this->createResponse(429, ['Retry-After: 42'])));
}
public function testRetryAfterIsReadAsHttpDate(): void
{
$delay = self::parseRetryAfter($this->createResponse(429, ['Retry-After: '.gmdate('D, d M Y H:i:s \G\M\T', time() + 120)]));
self::assertIsInt($delay);
self::assertGreaterThan(115, $delay);
self::assertLessThanOrEqual(120, $delay);
// the obsolete RFC 850 format must be accepted too
self::assertSame(0, self::parseRetryAfter($this->createResponse(429, ['Retry-After: Sunday, 06-Nov-94 08:49:37 GMT'])));
}
public function testRetryAfterInThePastMeansNoWait(): void
{
self::assertSame(0, self::parseRetryAfter($this->createResponse(429, ['Retry-After: '.gmdate('D, d M Y H:i:s \G\M\T', time() - 120)])));
}
public function testMalformedRetryAfterIsIgnored(): void
{
self::assertNull(self::parseRetryAfter($this->createResponse(429, ['Retry-After: not a date'])));
self::assertNull(self::parseRetryAfter($this->createResponse(429, ['Retry-After: 99999999999999999999'])));
self::assertNull(self::parseRetryAfter($this->createResponse(429, ['Retry-After: '])));
self::assertNull(self::parseRetryAfter($this->createResponse(429, [])));
}
public function testRateLimitedResponseIsRetriedAfterTheInterval(): void
{
self::assertSame(
['retry' => true, 'delay' => 5.0],
$this->decideRetry($this->createJob(), $this->createResponse(429, ['Retry-After: 5']))
);
}
public function testZeroRetryAfterUsesTheDefaultBackoff(): void
{
self::assertSame(
['retry' => true, 'delay' => null],
$this->decideRetry($this->createJob(), $this->createResponse(429, ['Retry-After: 0']))
);
}
public function testRateLimitedResponseWithoutRetryAfterIsNotRetried(): void
{
self::assertSame(
['retry' => false, 'delay' => null],
$this->decideRetry($this->createJob(), $this->createResponse(429, []))
);
}
public function testRetryableStatusCodeHonorsRetryAfter(): void
{
self::assertSame(
['retry' => true, 'delay' => 30.0],
$this->decideRetry($this->createJob(), $this->createResponse(503, ['Retry-After: 30']))
);
}
public function testRetryableStatusCodeWithoutRetryAfterUsesTheDefaultBackoff(): void
{
self::assertSame(
['retry' => true, 'delay' => null],
$this->decideRetry($this->createJob(), $this->createResponse(503, []))
);
self::assertSame(
['retry' => true, 'delay' => null],
$this->decideRetry($this->createJob(), $this->createResponse(503, ['Retry-After: whenever']))
);
}
public function testRetryAfterBeyondTheCapIsNotWaitedOut(): void
{
// 429 is only retryable because the header says when to come back, so an interval we will
// not wait for leaves nothing to act on
self::assertSame(
['retry' => false, 'delay' => null],
$this->decideRetry($this->createJob(), $this->createResponse(429, ['Retry-After: 3600']))
);
// a status code which was retryable before this header was read must stay retryable, on the
// default backoff, so the cap cannot turn a retry we would have made anyway into a failure
self::assertSame(
['retry' => true, 'delay' => null],
$this->decideRetry($this->createJob(), $this->createResponse(503, ['Retry-After: 3600']))
);
}
public function testRetryAfterDoesNotDefeatMaxRetries(): void
{
self::assertSame(
['retry' => false, 'delay' => null],
$this->decideRetry($this->createJob(3), $this->createResponse(429, ['Retry-After: 5']))
);
}
public function testNonGetRequestsAreNotRetried(): void
{
$job = $this->createJob();
$job['options'] = ['http' => ['method' => 'POST']];
self::assertSame(
['retry' => false, 'delay' => null],
$this->decideRetry($job, $this->createResponse(429, ['Retry-After: 5']))
);
}
public function testDelayedRetryDoesNotBlockTheDownloadLoop(): void
{
$downloader = $this->createDownloader();
// tick() drives every transfer which is in flight, so a delay which is waited out rather
// than scheduled stalls all of them, not just the request which is being retried
$start = microtime(true);
$this->scheduleRetry($downloader, $this->createJob(), 30.0);
$downloader->tick();
$elapsed = microtime(true) - $start;
self::assertLessThan(1.0, $elapsed);
self::assertCount(1, $this->readDelayedJobs($downloader));
}
public function testSelectTimeoutIsShortenedToTheNextDueRetry(): void
{
$downloader = $this->createDownloader();
$this->scheduleRetry($downloader, $this->createJob(), 0.25);
$timeout = self::callPrivate($downloader, 'getSelectTimeout');
self::assertIsFloat($timeout);
self::assertGreaterThan(0.0, $timeout);
self::assertLessThanOrEqual(0.25, $timeout);
}
public function testDueRetryIsStartedWhileALaterOneKeepsWaiting(): void
{
$downloader = $this->createDownloader();
$this->scheduleRetry($downloader, $this->createJob(0, 'other.org'), 30.0);
$this->scheduleRetry($downloader, $this->createJob(), 0.0001);
usleep(1000);
self::callPrivate($downloader, 'restartDueJobs');
self::assertCount(1, $this->readDelayedJobs($downloader), 'the retry which is not due yet must still be waiting');
$jobs = $this->readProperty($downloader, 'jobs');
self::assertIsArray($jobs);
self::assertCount(1, $jobs, 'the due retry must have been started');
foreach (array_keys($jobs) as $id) {
$downloader->abortRequest((int) $id);
}
}
public function testAbortedRequestIsNotRetried(): void
{
$downloader = $this->createDownloader();
$job = $this->createJob();
$this->scheduleRetry($downloader, $job, 30.0);
// a request is cancelled by the id of the handle it was first sent on
$downloader->abortRequest((int) $job['curlHandle']);
self::assertSame([], $this->readDelayedJobs($downloader));
$this->letWaitsRunOut($downloader);
self::callPrivate($downloader, 'restartDueJobs');
self::assertSame([], $this->readProperty($downloader, 'jobs'), 'a cancelled request must not be sent again');
}
public function testRetryWaitsForTheLatestRetryAfterOfItsOrigin(): void
{
$io = new BufferIO();
$downloader = $this->createDownloader($io);
// another request to example.org was told to come back in 30s, which holds for the next ones too
$this->scheduleRetry($downloader, $this->createJob(), 30.0);
$this->scheduleRetry($downloader, $this->createJob(), 0.0001);
$this->scheduleRetry($downloader, $this->createJob(3), null);
$this->scheduleRetry($downloader, $this->createJob(0, 'other.org'), 0.0001);
usleep(1000);
self::callPrivate($downloader, 'restartDueJobs');
$delayedJobs = $this->readDelayedJobs($downloader);
self::assertCount(3, $delayedJobs, 'retries to example.org must wait for its deadline, whether or not they got a Retry-After');
foreach ($delayedJobs as $delayedJob) {
self::assertSame('example.org', $delayedJob['job']['origin']);
}
$jobs = $this->readProperty($downloader, 'jobs');
self::assertIsArray($jobs);
self::assertCount(1, $jobs, 'a retry to another origin must not be held up');
foreach (array_keys($jobs) as $id) {
$downloader->abortRequest((int) $id);
}
$this->announceRetryAfterWaits($downloader);
self::assertStringContainsString('(3 pending), waiting 30s before retrying', $io->getOutput());
}
public function testFirstRetryToABlockedOriginIsNotStartedStraightAway(): void
{
$downloader = $this->createDownloader();
$this->scheduleRetry($downloader, $this->createJob(), 30.0);
// the first retry has no backoff of its own
$this->scheduleRetry($downloader, $this->createJob(0), null);
self::assertCount(2, $this->readDelayedJobs($downloader));
self::assertSame([], $this->readProperty($downloader, 'jobs'));
}
public function testRetryAfterWaitIsAnnouncedOncePerOrigin(): void
{
$io = new BufferIO();
$downloader = $this->createDownloader($io);
$this->scheduleRetry($downloader, $this->createJob(), 10.0);
$this->scheduleRetry($downloader, $this->createJob(), 30.0);
$this->scheduleRetry($downloader, $this->createJob(0, 'other.org'), 30.0);
$this->announceRetryAfterWaits($downloader);
$this->announceRetryAfterWaits($downloader);
self::assertSame(
'<warning>example.org is rate limiting requests (2 pending), waiting 30s before retrying</warning>'.PHP_EOL
.'<warning>other.org is rate limiting requests (1 pending), waiting 30s before retrying</warning>'.PHP_EOL,
$io->getOutput()
);
}
public function testRetryAfterWaitIsAnnouncedWhileRequestsToTheOriginAreStillInFlight(): void
{
$io = new BufferIO();
$downloader = $this->createDownloader($io);
// a long transfer to the origin can outlast the whole wait, so the notice must not wait for it
$this->scheduleRetry($downloader, $this->createJob(), 30.0);
$this->writeProperty($downloader, 'jobs', [1 => ['origin' => 'example.org']]);
$this->announceRetryAfterWaits($downloader);
self::assertSame('<warning>example.org is rate limiting requests (1 pending), waiting 30s before retrying</warning>'.PHP_EOL, $io->getOutput());
}
public function testRetryAfterWaitIsAnnouncedAgainOnceTheOriginTurnsRequestsAwayAnew(): void
{
$io = new BufferIO();
$downloader = $this->createDownloader($io);
$this->scheduleRetry($downloader, $this->createJob(), 1.0, 503);
$this->announceRetryAfterWaits($downloader);
// the wait runs out and the retry is started, which ends the episode
$this->letWaitsRunOut($downloader);
self::callPrivate($downloader, 'restartDueJobs');
$this->announceRetryAfterWaits($downloader);
$jobs = $this->readProperty($downloader, 'jobs');
self::assertIsArray($jobs);
foreach (array_keys($jobs) as $id) {
$downloader->abortRequest((int) $id);
}
$this->scheduleRetry($downloader, $this->createJob(1), 5.0);
$this->announceRetryAfterWaits($downloader);
self::assertSame(
'<warning>example.org responded with status code 503 (1 pending), waiting 1s before retrying</warning>'.PHP_EOL
.'<warning>example.org is rate limiting requests (1 pending), waiting 5s before retrying</warning>'.PHP_EOL,
$io->getOutput()
);
}
public function testDefaultBackoffIsNotAnnounced(): void
{
$io = new BufferIO();
$downloader = $this->createDownloader($io);
$this->scheduleRetry($downloader, $this->createJob(3), null);
$this->announceRetryAfterWaits($downloader);
self::assertCount(1, $this->readDelayedJobs($downloader));
self::assertSame('', $io->getOutput());
}
public function testJsonResponseIsRecognisedWithCharset(): void
{
self::assertTrue(self::callPrivate(CurlDownloader::class, 'isJsonResponse', $this->createResponse(429, ['Content-Type: application/json'])));
self::assertTrue(self::callPrivate(CurlDownloader::class, 'isJsonResponse', $this->createResponse(429, ['Content-Type: application/json; charset=utf-8'])));
self::assertTrue(self::callPrivate(CurlDownloader::class, 'isJsonResponse', $this->createResponse(429, ['Content-Type: Application/JSON; charset=UTF-8'])));
self::assertFalse(self::callPrivate(CurlDownloader::class, 'isJsonResponse', $this->createResponse(429, ['Content-Type: text/html'])));
self::assertFalse(self::callPrivate(CurlDownloader::class, 'isJsonResponse', $this->createResponse(429, [])));
}
public function testFailureReportsARetryAfterWhichWasNotWaitedOut(): void
{
self::assertSame(
'HTTP/1.1 429 Status, the server asked to retry in 3600s which is longer than the 60s Composer is willing to wait, try again later',
self::callPrivate(CurlDownloader::class, 'getStatusFailureMessage', $this->createResponse(429, ['Retry-After: 3600']))
);
// an interval which was waited out, or no interval at all, has nothing to add
self::assertSame('HTTP/1.1 429 Status', self::callPrivate(CurlDownloader::class, 'getStatusFailureMessage', $this->createResponse(429, ['Retry-After: 5'])));
self::assertSame('HTTP/1.1 429 Status', self::callPrivate(CurlDownloader::class, 'getStatusFailureMessage', $this->createResponse(429, [])));
}
/**
* @param list<string> $headers
*/
private function createResponse(int $statusCode, array $headers): Response
{
array_unshift($headers, 'HTTP/1.1 '.$statusCode.' Status');
return new Response(['url' => 'https://example.org/packages.json'], $statusCode, $headers, '');
}
/**
* @return mixed[]
*/
private function createJob(int $retries = 0, string $origin = 'example.org'): array
{
return [
'url' => 'https://'.$origin.'/packages.json',
'origin' => $origin,
'attributes' => ['retryAuthFailure' => false, 'redirects' => 0, 'retries' => $retries, 'storeAuth' => false, 'ipResolve' => null],
'options' => [],
'filename' => null,
'curlHandle' => curl_init(),
'resolve' => static function (): void {
},
'reject' => static function (): void {
},
];
}
private function createDownloader(?IOInterface $io = null): CurlDownloader
{
$config = $this->getMockBuilder('Composer\Config')->getMock();
$config->expects($this->any())
->method('get')
->will($this->returnCallback(static function ($key) {
if ($key === 'github-domains' || $key === 'gitlab-domains') {
return [];
}
return null;
}));
return new CurlDownloader($io ?? $this->getMockBuilder('Composer\IO\IOInterface')->getMock(), $config);
}
/**
* @param mixed[] $job
*/
private function scheduleRetry(CurlDownloader $downloader, array $job, ?float $delay, int $statusCode = 429): void
{
self::callPrivate($downloader, 'restartJobWithDelay', $job, $job['url'], $job['attributes'], $delay, $statusCode);
}
private function announceRetryAfterWaits(CurlDownloader $downloader): void
{
self::callPrivate($downloader, 'announceRetryAfterWaits');
}
/**
* @param mixed[] $job
* @return mixed
*/
private function decideRetry(array $job, Response $response)
{
return self::callPrivate($this->createDownloader(), 'isStatusCodeRetryNeeded', $job, $response);
}
/**
* @return mixed
*/
private static function parseRetryAfter(Response $response)
{
return self::callPrivate(CurlDownloader::class, 'getRetryAfterDelay', $response);
}
/**
* @param object|class-string $target
* @param mixed ...$args
* @return mixed
*/
private static function callPrivate($target, string $method, ...$args)
{
$reflection = new \ReflectionMethod($target, $method);
if (\PHP_VERSION_ID < 80100) {
$reflection->setAccessible(true);
}
return $reflection->invoke(is_object($target) ? $target : null, ...$args);
}
/**
* @return mixed[]
*/
private function readDelayedJobs(CurlDownloader $downloader): array
{
$delayedJobs = $this->readProperty($downloader, 'delayedJobs');
self::assertIsArray($delayedJobs);
return $delayedJobs;
}
/**
* @return mixed
*/
private function readProperty(CurlDownloader $downloader, string $name)
{
$property = new \ReflectionProperty($downloader, $name);
if (\PHP_VERSION_ID < 80100) {
$property->setAccessible(true);
}
return $property->getValue($downloader);
}
/**
* Moves every delayed retry and origin hold into the past, as if their wait had run out
*/
private function letWaitsRunOut(CurlDownloader $downloader): void
{
$delayedJobs = $this->readDelayedJobs($downloader);
foreach (array_keys($delayedJobs) as $i) {
$delayedJobs[$i]['at'] = 0.0;
}
$this->writeProperty($downloader, 'delayedJobs', $delayedJobs);
$origins = $this->readProperty($downloader, 'retryAfterOrigins');
self::assertIsArray($origins);
foreach (array_keys($origins) as $origin) {
$origins[$origin]['until'] = 0.0;
}
$this->writeProperty($downloader, 'retryAfterOrigins', $origins);
}
/**
* @param mixed $value
*/
private function writeProperty(CurlDownloader $downloader, string $name, $value): void
{
$property = new \ReflectionProperty($downloader, $name);
if (\PHP_VERSION_ID < 80100) {
$property->setAccessible(true);
}
$property->setValue($downloader, $value);
}
}