/**
* Tests application cache event invalidation over a distributed setup.
*/
public function test_distributed_application_event_invalidation()
{
global $CFG;
// This is going to be an intense wee test.
// We need to add data the to cache, invalidate it by event, manually force it back without MUC knowing to simulate a
// disconnected/distributed setup (think load balanced server using local cache), instantiate the cache again and finally
// check that it is not picked up.
$instance = cache_config_phpunittest::instance();
$instance->phpunit_add_definition('phpunit/eventinvalidationtest', array('mode' => cache_store::MODE_APPLICATION, 'component' => 'phpunit', 'area' => 'eventinvalidationtest', 'simplekeys' => true, 'simpledata' => true, 'invalidationevents' => array('crazyevent')));
$cache = cache::make('phpunit', 'eventinvalidationtest');
$this->assertTrue($cache->set('testkey1', 'test data 1'));
$this->assertEquals('test data 1', $cache->get('testkey1'));
cache_helper::invalidate_by_event('crazyevent', array('testkey1'));
$this->assertFalse($cache->get('testkey1'));
// OK data added, data invalidated, and invalidation time has been set.
// Now we need to manually add back the data and adjust the invalidation time.
$hash = md5(cache_store::MODE_APPLICATION . '/phpunit/eventinvalidationtest/' . $CFG->wwwroot . 'phpunit');
$timefile = $CFG->dataroot . "/cache/cachestore_file/default_application/phpunit_eventinvalidationtest/las/lastinvalidation-{$hash}.cache";
// Make sure the file is correct.
$this->assertTrue(file_exists($timefile));
$timecont = serialize(cache::now() - 60);
// Back 60sec in the past to force it to re-invalidate.
make_writable_directory(dirname($timefile));
file_put_contents($timefile, $timecont);
$this->assertTrue(file_exists($timefile));
$datafile = $CFG->dataroot . "/cache/cachestore_file/default_application/phpunit_eventinvalidationtest/tes/testkey1-{$hash}.cache";
$datacont = serialize("test data 1");
make_writable_directory(dirname($datafile));
file_put_contents($datafile, $datacont);
$this->assertTrue(file_exists($datafile));
// Test 1: Rebuild without the event and test its there.
cache_factory::reset();
$instance = cache_config_phpunittest::instance();
$instance->phpunit_add_definition('phpunit/eventinvalidationtest', array('mode' => cache_store::MODE_APPLICATION, 'component' => 'phpunit', 'area' => 'eventinvalidationtest', 'simplekeys' => true, 'simpledata' => true));
$cache = cache::make('phpunit', 'eventinvalidationtest');
$this->assertEquals('test data 1', $cache->get('testkey1'));
// Test 2: Rebuild and test the invalidation of the event via the invalidation cache.
cache_factory::reset();
$instance = cache_config_phpunittest::instance();
$instance->phpunit_add_definition('phpunit/eventinvalidationtest', array('mode' => cache_store::MODE_APPLICATION, 'component' => 'phpunit', 'area' => 'eventinvalidationtest', 'simplekeys' => true, 'simpledata' => true, 'invalidationevents' => array('crazyevent')));
$cache = cache::make('phpunit', 'eventinvalidationtest');
$this->assertFalse($cache->get('testkey1'));
}
/**
* Tests application cache event invalidation over a distributed setup.
*/
public function test_distributed_application_event_invalidation()
{
global $CFG;
// This is going to be an intense wee test.
// We need to add data the to cache, invalidate it by event, manually force it back without MUC knowing to simulate a
// disconnected/distributed setup (think load balanced server using local cache), instantiate the cache again and finally
// check that it is not picked up.
$instance = cache_config_testing::instance();
$instance->phpunit_add_definition('phpunit/eventinvalidationtest', array('mode' => cache_store::MODE_APPLICATION, 'component' => 'phpunit', 'area' => 'eventinvalidationtest', 'simplekeys' => true, 'simpledata' => true, 'invalidationevents' => array('crazyevent')));
$cache = cache::make('phpunit', 'eventinvalidationtest');
$this->assertTrue($cache->set('testkey1', 'test data 1'));
$this->assertEquals('test data 1', $cache->get('testkey1'));
cache_helper::invalidate_by_event('crazyevent', array('testkey1'));
$this->assertFalse($cache->get('testkey1'));
// OK data added, data invalidated, and invalidation time has been set.
// Now we need to manually add back the data and adjust the invalidation time.
$hash = md5(cache_store::MODE_APPLICATION . '/phpunit/eventinvalidationtest/' . $CFG->wwwroot . 'phpunit');
$timefile = $CFG->dataroot . "/cache/cachestore_file/default_application/phpunit_eventinvalidationtest/las-cache/lastinvalidation-{$hash}.cache";
// Make sure the file is correct.
$this->assertTrue(file_exists($timefile));
$timecont = serialize(cache::now() - 60);
// Back 60sec in the past to force it to re-invalidate.
make_writable_directory(dirname($timefile));
file_put_contents($timefile, $timecont);
$this->assertTrue(file_exists($timefile));
$datafile = $CFG->dataroot . "/cache/cachestore_file/default_application/phpunit_eventinvalidationtest/tes-cache/testkey1-{$hash}.cache";
$datacont = serialize("test data 1");
make_writable_directory(dirname($datafile));
file_put_contents($datafile, $datacont);
$this->assertTrue(file_exists($datafile));
// Test 1: Rebuild without the event and test its there.
cache_factory::reset();
$instance = cache_config_testing::instance();
$instance->phpunit_add_definition('phpunit/eventinvalidationtest', array('mode' => cache_store::MODE_APPLICATION, 'component' => 'phpunit', 'area' => 'eventinvalidationtest', 'simplekeys' => true, 'simpledata' => true));
$cache = cache::make('phpunit', 'eventinvalidationtest');
$this->assertEquals('test data 1', $cache->get('testkey1'));
// Test 2: Rebuild and test the invalidation of the event via the invalidation cache.
cache_factory::reset();
$instance = cache_config_testing::instance();
$instance->phpunit_add_definition('phpunit/eventinvalidationtest', array('mode' => cache_store::MODE_APPLICATION, 'component' => 'phpunit', 'area' => 'eventinvalidationtest', 'simplekeys' => true, 'simpledata' => true, 'invalidationevents' => array('crazyevent')));
$cache = cache::make('phpunit', 'eventinvalidationtest');
$this->assertFalse($cache->get('testkey1'));
// Test 3: Verify that an existing lastinvalidation cache file is updated when needed.
// Make a new cache class. This should should invalidate testkey2.
$cache = cache::make('phpunit', 'eventinvalidationtest');
// Timestamp should have updated to cache::now().
$this->assertEquals(cache::now(), $cache->get('lastinvalidation'));
// Set testkey2 data.
$cache->set('testkey2', 'test data 2');
// Backdate the event invalidation time by 30 seconds.
$invalidationcache = cache::make('core', 'eventinvalidation');
$invalidationcache->set('crazyevent', array('testkey2' => cache::now() - 30));
// Lastinvalidation should already be cache::now().
$this->assertEquals(cache::now(), $cache->get('lastinvalidation'));
// Set it to 15 seconds ago so that we know if it changes.
$cache->set('lastinvalidation', cache::now() - 15);
// Make a new cache class. This should not invalidate anything.
cache_factory::instance()->reset_cache_instances();
$cache = cache::make('phpunit', 'eventinvalidationtest');
// Lastinvalidation shouldn't change since it was already newer than invalidation event.
$this->assertEquals(cache::now() - 15, $cache->get('lastinvalidation'));
// Now set the event invalidation to newer than the lastinvalidation time.
$invalidationcache->set('crazyevent', array('testkey2' => cache::now() - 5));
// Make a new cache class. This should should invalidate testkey2.
cache_factory::instance()->reset_cache_instances();
$cache = cache::make('phpunit', 'eventinvalidationtest');
// Lastinvalidation timestamp should have updated to cache::now().
$this->assertEquals(cache::now(), $cache->get('lastinvalidation'));
// Now simulate a purge_by_event 5 seconds ago.
$invalidationcache = cache::make('core', 'eventinvalidation');
$invalidationcache->set('crazyevent', array('purged' => cache::now() - 5));
// Set our lastinvalidation timestamp to 15 seconds ago.
$cache->set('lastinvalidation', cache::now() - 15);
// Make a new cache class. This should invalidate the cache.
cache_factory::instance()->reset_cache_instances();
$cache = cache::make('phpunit', 'eventinvalidationtest');
// Lastinvalidation timestamp should have updated to cache::now().
$this->assertEquals(cache::now(), $cache->get('lastinvalidation'));
}