/**
* Testing cachestore_file::get with prescan enabled and with
* deleting the cache between the prescan and the call to get.
*
* The deleting of cache simulates some other process purging
* the cache.
*/
public function test_cache_get_with_prescan_and_purge()
{
global $CFG;
$definition = cache_definition::load_adhoc(cache_store::MODE_REQUEST, 'cachestore_file', 'phpunit_test');
$name = 'File test';
$path = make_cache_directory('cachestore_file_test');
$cache = new cachestore_file($name, array('path' => $path, 'prescan' => true));
$cache->initialise($definition);
$cache->set('testing', 'value');
$path = make_cache_directory('cachestore_file_test');
$cache = new cachestore_file($name, array('path' => $path, 'prescan' => true));
$cache->initialise($definition);
// Let's pretend that some other process purged caches.
remove_dir($CFG->cachedir . '/cachestore_file_test', true);
make_cache_directory('cachestore_file_test');
$cache->get('testing');
}
/**
* Returns an array of default stores for use.
*
* @return array
*/
protected static function get_default_stores()
{
global $CFG;
require_once $CFG->dirroot . '/cache/stores/file/lib.php';
require_once $CFG->dirroot . '/cache/stores/session/lib.php';
require_once $CFG->dirroot . '/cache/stores/static/lib.php';
return array('default_application' => array('name' => 'default_application', 'plugin' => 'file', 'configuration' => array(), 'features' => cachestore_file::get_supported_features(), 'modes' => cachestore_file::get_supported_modes(), 'default' => true), 'default_session' => array('name' => 'default_session', 'plugin' => 'session', 'configuration' => array(), 'features' => cachestore_session::get_supported_features(), 'modes' => cachestore_session::get_supported_modes(), 'default' => true), 'default_request' => array('name' => 'default_request', 'plugin' => 'static', 'configuration' => array(), 'features' => cachestore_static::get_supported_features(), 'modes' => cachestore_static::get_supported_modes(), 'default' => true));
}
/**
* Generates an instance of the cache store that can be used for testing.
*
* Returns an instance of the cache store, or false if one cannot be created.
*
* @param cache_definition $definition
* @return cachestore_file
*/
public static function initialise_test_instance(cache_definition $definition)
{
$name = 'File test';
$path = make_cache_directory('cachestore_file_test');
$cache = new cachestore_file($name, array('path' => $path));
$cache->initialise($definition);
return $cache;
}
/**
* Creates the default configuration and saves it.
*
* This function calls config_save, however it is safe to continue using it afterwards as this function should only ever
* be called when there is no configuration file already.
*
* @return true|array Returns true if the default configuration was successfully created.
* Returns a configuration array if it could not be saved. This is a bad situation. Check your error logs.
*/
public static function create_default_configuration()
{
global $CFG;
// HACK ALERT.
// We probably need to come up with a better way to create the default stores, or at least ensure 100% that the
// default store plugins are protected from deletion.
require_once $CFG->dirroot . '/cache/stores/file/lib.php';
require_once $CFG->dirroot . '/cache/stores/session/lib.php';
require_once $CFG->dirroot . '/cache/stores/static/lib.php';
$writer = new self();
$writer->configstores = array('default_application' => array('name' => 'default_application', 'plugin' => 'file', 'configuration' => array(), 'features' => cachestore_file::get_supported_features(), 'modes' => cache_store::MODE_APPLICATION, 'default' => true), 'default_session' => array('name' => 'default_session', 'plugin' => 'session', 'configuration' => array(), 'features' => cachestore_session::get_supported_features(), 'modes' => cache_store::MODE_SESSION, 'default' => true), 'default_request' => array('name' => 'default_request', 'plugin' => 'static', 'configuration' => array(), 'features' => cachestore_static::get_supported_features(), 'modes' => cache_store::MODE_REQUEST, 'default' => true));
$writer->configdefinitions = self::locate_definitions();
$writer->configmodemappings = array(array('mode' => cache_store::MODE_APPLICATION, 'store' => 'default_application', 'sort' => -1), array('mode' => cache_store::MODE_SESSION, 'store' => 'default_session', 'sort' => -1), array('mode' => cache_store::MODE_REQUEST, 'store' => 'default_request', 'sort' => -1));
$writer->configlocks = array('default_file_lock' => array('name' => 'cachelock_file_default', 'type' => 'cachelock_file', 'dir' => 'filelocks', 'default' => true));
$factory = cache_factory::instance();
// We expect the cache to be initialising presently. If its not then something has gone wrong and likely
// we are now in a loop.
if ($factory->get_state() !== cache_factory::STATE_INITIALISING) {
return $writer->generate_configuration_array();
}
$factory->set_state(cache_factory::STATE_SAVING);
$writer->config_save();
return true;
}
/**
* Creates the default configuration and saves it.
*
* @param bool $forcesave Ignored because we are disabled!
* @return array
*/
public static function create_default_configuration($forcesave = false)
{
global $CFG;
// HACK ALERT.
// We probably need to come up with a better way to create the default stores, or at least ensure 100% that the
// default store plugins are protected from deletion.
require_once $CFG->dirroot . '/cache/stores/file/lib.php';
require_once $CFG->dirroot . '/cache/stores/session/lib.php';
require_once $CFG->dirroot . '/cache/stores/static/lib.php';
$writer = new self();
$writer->configstores = array('default_application' => array('name' => 'default_application', 'plugin' => 'file', 'configuration' => array(), 'features' => cachestore_file::get_supported_features(), 'modes' => cache_store::MODE_APPLICATION, 'default' => true), 'default_session' => array('name' => 'default_session', 'plugin' => 'session', 'configuration' => array(), 'features' => cachestore_session::get_supported_features(), 'modes' => cache_store::MODE_SESSION, 'default' => true), 'default_request' => array('name' => 'default_request', 'plugin' => 'static', 'configuration' => array(), 'features' => cachestore_static::get_supported_features(), 'modes' => cache_store::MODE_REQUEST, 'default' => true));
$writer->configdefinitions = array();
$writer->configmodemappings = array(array('mode' => cache_store::MODE_APPLICATION, 'store' => 'default_application', 'sort' => -1), array('mode' => cache_store::MODE_SESSION, 'store' => 'default_session', 'sort' => -1), array('mode' => cache_store::MODE_REQUEST, 'store' => 'default_request', 'sort' => -1));
$writer->configlocks = array('default_file_lock' => array('name' => 'cachelock_file_default', 'type' => 'cachelock_file', 'dir' => 'filelocks', 'default' => true));
return $writer->generate_configuration_array();
}