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<?php
namespace Guzzle\Tests\Plugin\Cache;
use Guzzle\Http\Client;
use Guzzle\Http\ClientInterface;
use Guzzle\Http\Exception\BadResponseException;
use Guzzle\Http\Exception\CurlException;
use Guzzle\Http\Message\Request;
use Guzzle\Http\Message\Response;
use Guzzle\Http\Message\RequestFactory;
use Guzzle\Plugin\Cache\CachePlugin;
use Guzzle\Cache\DoctrineCacheAdapter;
use Doctrine\Common\Cache\ArrayCache;
use Guzzle\Plugin\Cache\DefaultCacheStorage;
use Guzzle\Plugin\Mock\MockPlugin;
use Guzzle\Tests\Http\Server;
/**
* @covers Guzzle\Plugin\Cache\DefaultRevalidation
* @group server
*/
class DefaultRevalidationTest extends \Guzzle\Tests\GuzzleTestCase
{
protected function getHttpDate($time)
{
return gmdate(ClientInterface::HTTP_DATE, strtotime($time));
}
/**
* Data provider to test cache revalidation
*
* @return array
*/
public function cacheRevalidationDataProvider()
{
return array(
// Forces revalidation that passes
array(
true,
"Pragma: no-cache\r\n\r\n",
"HTTP/1.1 200 OK\r\nDate: " . $this->getHttpDate('-100 hours') . "\r\nContent-Length: 4\r\n\r\nData",
"HTTP/1.1 304 NOT MODIFIED\r\nCache-Control: max-age=2000000\r\nContent-Length: 0\r\n\r\n",
),
// Forces revalidation that overwrites what is in cache
array(
false,
"\r\n",
"HTTP/1.1 200 OK\r\nCache-Control: must-revalidate, no-cache\r\nDate: " . $this->getHttpDate('-10 hours') . "\r\nContent-Length: 4\r\n\r\nData",
"HTTP/1.1 200 OK\r\nContent-Length: 5\r\n\r\nDatas",
"HTTP/1.1 200 OK\r\nContent-Length: 5\r\nDate: " . $this->getHttpDate('now') . "\r\n\r\nDatas"
),
// Throws an exception during revalidation
array(
false,
"\r\n",
"HTTP/1.1 200 OK\r\nCache-Control: no-cache\r\nDate: " . $this->getHttpDate('-3 hours') . "\r\n\r\nData",
"HTTP/1.1 500 INTERNAL SERVER ERROR\r\nContent-Length: 0\r\n\r\n"
),
// ETag mismatch
array(
false,
"\r\n",
"HTTP/1.1 200 OK\r\nCache-Control: no-cache\r\nETag: \"123\"\r\nDate: " . $this->getHttpDate('-10 hours') . "\r\n\r\nData",
"HTTP/1.1 304 NOT MODIFIED\r\nETag: \"123456\"\r\n\r\n",
),
);
}
/**
* @dataProvider cacheRevalidationDataProvider
*/
public function testRevalidatesResponsesAgainstOriginServer($can, $request, $response, $validate = null, $result = null)
{
// Send some responses to the test server for cache validation
$server = $this->getServer();
$server->flush();
if ($validate) {
$server->enqueue($validate);
}
$request = RequestFactory::getInstance()->fromMessage("GET / HTTP/1.1\r\nHost: 127.0.0.1:" . $server->getPort() . "\r\n" . $request);
$response = Response::fromMessage($response);
$request->setClient(new Client());
$plugin = new CachePlugin(new DoctrineCacheAdapter(new ArrayCache()));
$this->assertEquals(
$can,
$plugin->canResponseSatisfyRequest($request, $response),
'-> ' . $request . "\n" . $response
);
if ($result) {
$result = Response::fromMessage($result);
$result->removeHeader('Date');
$request->getResponse()->removeHeader('Date');
$request->getResponse()->removeHeader('Connection');
// Get rid of dates
$this->assertEquals((string) $result, (string) $request->getResponse());
}
if ($validate) {
$this->assertEquals(1, count($server->getReceivedRequests()));
}
}
public function testHandles404RevalidationResponses()
{
$request = new Request('GET', 'http://foo.com');
$request->setClient(new Client());
$badResponse = new Response(404, array(), 'Oh no!');
$badRequest = clone $request;
$badRequest->setResponse($badResponse, true);
$response = new Response(200, array(), 'foo');
// Seed the cache
$s = new DefaultCacheStorage(new DoctrineCacheAdapter(new ArrayCache()));
$s->cache($request, $response);
$this->assertNotNull($s->fetch($request));
$rev = $this->getMockBuilder('Guzzle\Plugin\Cache\DefaultRevalidation')
->setConstructorArgs(array($s))
->setMethods(array('createRevalidationRequest'))
->getMock();
$rev->expects($this->once())
->method('createRevalidationRequest')
->will($this->returnValue($badRequest));
try {
$rev->revalidate($request, $response);
$this->fail('Should have thrown an exception');
} catch (BadResponseException $e) {
$this->assertSame($badResponse, $e->getResponse());
$this->assertNull($s->fetch($request));
}
}
public function testCanRevalidateWithPlugin()
{
$this->getServer()->flush();
$this->getServer()->enqueue(array(
"HTTP/1.1 200 OK\r\n" .
"Date: Mon, 12 Nov 2012 03:06:37 GMT\r\n" .
"Cache-Control: private, s-maxage=0, max-age=0, must-revalidate\r\n" .
"Last-Modified: Mon, 12 Nov 2012 02:53:38 GMT\r\n" .
"Content-Length: 2\r\n\r\nhi",
"HTTP/1.0 304 Not Modified\r\n" .
"Date: Mon, 12 Nov 2012 03:06:38 GMT\r\n" .
"Content-Type: text/html; charset=UTF-8\r\n" .
"Last-Modified: Mon, 12 Nov 2012 02:53:38 GMT\r\n" .
"Age: 6302\r\n\r\n",
"HTTP/1.0 304 Not Modified\r\n" .
"Date: Mon, 12 Nov 2012 03:06:38 GMT\r\n" .
"Content-Type: text/html; charset=UTF-8\r\n" .
"Last-Modified: Mon, 12 Nov 2012 02:53:38 GMT\r\n" .
"Age: 6302\r\n\r\n",
));
$client = new Client($this->getServer()->getUrl());
$client->addSubscriber(new CachePlugin());
$this->assertEquals(200, $client->get()->send()->getStatusCode());
$this->assertEquals(200, $client->get()->send()->getStatusCode());
$this->assertEquals(200, $client->get()->send()->getStatusCode());
$this->assertEquals(3, count($this->getServer()->getReceivedRequests()));
}
public function testCanHandleRevalidationFailures()
{
$client = new Client($this->getServer()->getUrl());
$lm = gmdate('c', time() - 60);
$mock = new MockPlugin(array(
new Response(200, array(
'Date' => $lm,
'Cache-Control' => 'max-age=100, must-revalidate, stale-if-error=9999',
'Last-Modified' => $lm,
'Content-Length' => 2
), 'hi'),
new CurlException('Bleh')
));
$client->addSubscriber(new CachePlugin());
$client->addSubscriber($mock);
$client->get()->send();
$response = $client->get()->send();
$this->assertEquals(200, $response->getStatusCode());
$this->assertEquals('hi', $response->getBody(true));
$this->assertEquals(2, count($mock->getReceivedRequests()));
$this->assertEquals(0, count($mock->getQueue()));
}
public function testCanHandleStaleIfErrorWhenRevalidating()
{
$lm = gmdate('c', time() - 60);
$mock = new MockPlugin(array(
new Response(200, array(
'Date' => $lm,
'Cache-Control' => 'must-revalidate, max-age=0, stale-if-error=1200',
'Last-Modified' => $lm,
'Content-Length' => 2
), 'hi'),
new CurlException('Oh no!')
));
$cache = new CachePlugin();
$client = new Client('http://www.example.com');
$client->addSubscriber($cache);
$client->addSubscriber($mock);
$this->assertEquals(200, $client->get()->send()->getStatusCode());
$response = $client->get()->send();
$this->assertEquals(200, $response->getStatusCode());
$this->assertCount(0, $mock);
$this->assertEquals('HIT from GuzzleCache', (string) $response->getHeader('X-Cache-Lookup'));
$this->assertEquals('HIT_ERROR from GuzzleCache', (string) $response->getHeader('X-Cache'));
}
/**
* @group issue-437
*/
public function testDoesNotTouchClosureListeners()
{
$this->getServer()->flush();
$this->getServer()->enqueue(array(
"HTTP/1.1 200 OK\r\n" .
"Date: Mon, 12 Nov 2012 03:06:37 GMT\r\n" .
"Cache-Control: private, s-maxage=0, max-age=0, must-revalidate\r\n" .
"Last-Modified: Mon, 12 Nov 2012 02:53:38 GMT\r\n" .
"Content-Length: 2\r\n\r\nhi",
"HTTP/1.0 304 Not Modified\r\n" .
"Date: Mon, 12 Nov 2012 03:06:38 GMT\r\n" .
"Content-Type: text/html; charset=UTF-8\r\n" .
"Last-Modified: Mon, 12 Nov 2012 02:53:38 GMT\r\n" .
"Age: 6302\r\n\r\n",
"HTTP/1.0 304 Not Modified\r\n" .
"Date: Mon, 12 Nov 2012 03:06:38 GMT\r\n" .
"Content-Type: text/html; charset=UTF-8\r\n" .
"Last-Modified: Mon, 12 Nov 2012 02:53:38 GMT\r\n" .
"Age: 6302\r\n\r\n",
));
$client = new Client($this->getServer()->getUrl());
$client->addSubscriber(new CachePlugin());
$client->getEventDispatcher()->addListener('command.after_send', function(){});
$this->assertEquals(200, $client->get()->send()->getStatusCode());
$this->assertEquals(200, $client->get()->send()->getStatusCode());
$this->assertEquals(200, $client->get()->send()->getStatusCode());
}
}