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Merge pull request #8245 from dhensby/pulls/4.2/http-cache-fixes

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HTTPCacheControlMiddleware fixes
This commit is contained in:
Damian Mooyman 2018-07-16 13:13:12 +12:00 committed by GitHub
commit c6952b46c4
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2 changed files with 190 additions and 18 deletions
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39
src/Control/Middleware/HTTPCacheControlMiddleware.php
View File

@ -26,8 +26,6 @@ class HTTPCacheControlMiddleware implements HTTPMiddleware, Resettable
const STATE_DISABLED = 'disabled';
const STATE_DEFAULT = 'default';
/**
* Generate response for the given request
*
@ -90,11 +88,9 @@ class HTTPCacheControlMiddleware implements HTTPMiddleware, Resettable
'must-revalidate' => true,
],
self::STATE_ENABLED => [
'must-revalidate' => true,
],
self::STATE_DEFAULT => [
'no-cache' => true,
],
'must-revalidate' => true,
]
];
/**
@ -103,7 +99,7 @@ class HTTPCacheControlMiddleware implements HTTPMiddleware, Resettable
* @config
* @var string
*/
private static $defaultState = self::STATE_DEFAULT;
private static $defaultState = self::STATE_ENABLED;
/**
* Current state
@ -498,7 +494,13 @@ class HTTPCacheControlMiddleware implements HTTPMiddleware, Resettable
{
// Affect all non-disabled states
$applyTo = [self::STATE_ENABLED, self::STATE_PRIVATE, self::STATE_PUBLIC];
$this->setStateDirective($applyTo, 'no-cache', $noCache);
if ($noCache) {
$this->setStateDirective($applyTo, 'no-cache');
$this->removeStateDirective($applyTo, 'max-age');
$this->removeStateDirective($applyTo, 's-maxage');
} else {
$this->removeStateDirective($applyTo, 'no-cache');
}
return $this;
}
@ -515,6 +517,10 @@ class HTTPCacheControlMiddleware implements HTTPMiddleware, Resettable
// Affect all non-disabled states
$applyTo = [self::STATE_ENABLED, self::STATE_PRIVATE, self::STATE_PUBLIC];
$this->setStateDirective($applyTo, 'max-age', $age);
if ($age) {
$this->removeStateDirective($applyTo, 'no-cache');
$this->removeStateDirective($applyTo, 'no-store');
}
return $this;
}
@ -531,6 +537,10 @@ class HTTPCacheControlMiddleware implements HTTPMiddleware, Resettable
// Affect all non-disabled states
$applyTo = [self::STATE_ENABLED, self::STATE_PRIVATE, self::STATE_PUBLIC];
$this->setStateDirective($applyTo, 's-maxage', $age);
if ($age) {
$this->removeStateDirective($applyTo, 'no-cache');
$this->removeStateDirective($applyTo, 'no-store');
}
return $this;
}
@ -763,17 +773,16 @@ class HTTPCacheControlMiddleware implements HTTPMiddleware, Resettable
*/
protected function augmentState(HTTPRequest $request, HTTPResponse $response)
{
// If sessions exist we assume that the responses should not be cached by CDNs / proxies as we are
// likely to be supplying information relevant to the current user only
if ($request->getSession()->getAll()) {
// Don't force in case user code chooses to opt in to public caching
$this->privateCache();
}
// Errors disable cache (unless some errors are cached intentionally by usercode)
if ($response->isError() || $response->isRedirect()) {
// Even if publicCache(true) is specified, errors will be uncacheable
$this->disableCache(true);
} elseif ($request->getSession()->getAll()) {
// If sessions exist we assume that the responses should not be cached by CDNs / proxies as we are
// likely to be supplying information relevant to the current user only
// Don't force in case user code chooses to opt in to public caching
$this->privateCache();
}
}
}

169
tests/php/Control/Middleware/HTTPCacheControlMiddlewareTest.php
View File

@ -2,6 +2,7 @@
namespace SilverStripe\Control\Tests\Middleware;
use SilverStripe\Control\HTTPResponse;
use SilverStripe\Control\Middleware\HTTPCacheControlMiddleware;
use SilverStripe\Dev\SapphireTest;
@ -12,15 +13,177 @@ class HTTPCacheControlMiddlewareTest extends SapphireTest
parent::setUp();
// Set to disabled at null forcing level
HTTPCacheControlMiddleware::config()
->set('defaultState', 'disabled')
->set('defaultState', HTTPCacheControlMiddleware::STATE_ENABLED)
->set('defaultForcingLevel', 0);
HTTPCacheControlMiddleware::reset();
}
public function provideCacheStates()
{
return [
['enableCache', false],
['publicCache', false],
['privateCache', false],
['disableCache', true],
];
}
/**
* @dataProvider provideCacheStates
*/
public function testCheckDefaultStates($state, $immutable)
{
$cc = HTTPCacheControlMiddleware::singleton();
$cc->{$state}();
$response = new HTTPResponse();
$cc->applyToResponse($response);
$this->assertContains('must-revalidate', $response->getHeader('cache-control'));
}
/**
* @dataProvider provideCacheStates
*/
public function testSetMaxAge($state, $immutable)
{
$cc = HTTPCacheControlMiddleware::singleton();
$cc->{$state}();
$originalResponse = new HTTPResponse();
$cc->applyToResponse($originalResponse);
$cc->setMaxAge('300');
$response = new HTTPResponse();
$cc->applyToResponse($response);
if ($immutable) {
$this->assertEquals($originalResponse->getHeader('cache-control'), $response->getHeader('cache-control'));
} else {
$this->assertContains('max-age=300', $response->getHeader('cache-control'));
$this->assertNotContains('no-cache', $response->getHeader('cache-control'));
$this->assertNotContains('no-store', $response->getHeader('cache-control'));
}
}
/**
* @dataProvider provideCacheStates
*/
public function testSetNoStore($state, $immutable)
{
$cc = HTTPCacheControlMiddleware::singleton();
$cc->setMaxAge('300');
$cc->setSharedMaxAge('300');
$cc->{$state}();
$originalResponse = new HTTPResponse();
$cc->applyToResponse($originalResponse);
$cc->setNoStore();
$response = new HTTPResponse();
$cc->applyToResponse($response);
if ($immutable) {
$this->assertEquals($originalResponse->getHeader('cache-control'), $response->getHeader('cache-control'));
} else {
$this->assertContains('no-store', $response->getHeader('cache-control'));
$this->assertNotContains('max-age', $response->getHeader('cache-control'));
$this->assertNotContains('s-maxage', $response->getHeader('cache-control'));
}
}
/**
* @dataProvider provideCacheStates
*/
public function testSetNoCache($state, $immutable)
{
$cc = HTTPCacheControlMiddleware::singleton();
$cc->setMaxAge('300');
$cc->setSharedMaxAge('300');
$cc->{$state}();
$originalResponse = new HTTPResponse();
$cc->applyToResponse($originalResponse);
$cc->setNoCache();
$response = new HTTPResponse();
$cc->applyToResponse($response);
if ($immutable) {
$this->assertEquals($originalResponse->getHeader('cache-control'), $response->getHeader('cache-control'));
} else {
$this->assertContains('no-cache', $response->getHeader('cache-control'));
$this->assertNotContains('max-age', $response->getHeader('cache-control'));
$this->assertNotContains('s-maxage', $response->getHeader('cache-control'));
}
}
/**
* @dataProvider provideCacheStates
*/
public function testSetSharedMaxAge($state, $immutable)
{
$cc = HTTPCacheControlMiddleware::singleton();
$cc->{$state}();
$originalResponse = new HTTPResponse();
$cc->applyToResponse($originalResponse);
$cc->setSharedMaxAge('300');
$response = new HTTPResponse();
$cc->applyToResponse($response);
if ($immutable) {
$this->assertEquals($originalResponse->getHeader('cache-control'), $response->getHeader('cache-control'));
} else {
$this->assertContains('s-maxage=300', $response->getHeader('cache-control'));
$this->assertNotContains('no-cache', $response->getHeader('cache-control'));
$this->assertNotContains('no-store', $response->getHeader('cache-control'));
}
}
/**
* @dataProvider provideCacheStates
*/
public function testSetMustRevalidate($state, $immutable)
{
$cc = HTTPCacheControlMiddleware::singleton();
$cc->{$state}();
$originalResponse = new HTTPResponse();
$cc->applyToResponse($originalResponse);
$cc->setMustRevalidate();
$response = new HTTPResponse();
$cc->applyToResponse($response);
if ($immutable) {
$this->assertEquals($originalResponse->getHeader('cache-control'), $response->getHeader('cache-control'));
} else {
$this->assertContains('must-revalidate', $response->getHeader('cache-control'));
$this->assertNotContains('max-age', $response->getHeader('cache-control'));
$this->assertNotContains('s-maxage', $response->getHeader('cache-control'));
}
}
public function testCachingPriorities()
{
$hcc = new HTTPCacheControlMiddleware();
$this->assertTrue($this->isDisabled($hcc), 'caching starts as disabled');
$this->assertFalse($this->isDisabled($hcc), 'caching starts as disabled');
$hcc->enableCache();
$this->assertFalse($this->isDisabled($hcc));
@ -74,6 +237,6 @@ class HTTPCacheControlMiddlewareTest extends SapphireTest
protected function isDisabled(HTTPCacheControlMiddleware $hcc)
{
return $hcc->hasDirective('no-cache') && !$hcc->hasDirective('private') && !$hcc->hasDirective('public');
return $hcc->hasDirective('no-store') && !$hcc->hasDirective('private') && !$hcc->hasDirective('public');
}
}