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MDL-40903 cache: fixed up event invalidation

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This commit is contained in:
Sam Hemelryk 2013-09-17 10:56:52 +12:00
parent d67a1a8815
commit fb0eaa3fda
1 changed files with 27 additions and 21 deletions
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48
cache/classes/helper.php vendored
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@ -238,20 +238,24 @@ class cache_helper {
$instance = cache_config::instance();
$invalidationeventset = false;
$factory = cache_factory::instance();
$inuse = $factory->get_caches_in_use();
foreach ($instance->get_definitions() as $name => $definitionarr) {
$definition = cache_definition::load($name, $definitionarr);
if ($definition->invalidates_on_event($event)) {
// OK at this point we know that the definition has information to invalidate on the event.
// There are two routes, either its an application cache in which case we can invalidate it now.
// or it is a persistent cache that also needs to be invalidated now.
$applicationcache = $definition->get_mode() === cache_store::MODE_APPLICATION;
if ($applicationcache || $definition->data_should_be_persistent()) {
$cache = $factory->create_cache_from_definition($definition->get_component(), $definition->get_area());
$cache->delete_many($keys);
// First up check if there is a cache loader for this definition already.
// If there is we need to invalidate the keys from there.
$definitionkey = $definition->get_component().'/'.$definition->get_area();
if (isset($inuse[$definitionkey])) {
$inuse[$definitionkey]->delete_many($keys);
}
// We need to flag the event in the "Event invalidation" cache if it hasn't already happened.
if ($invalidationeventset === false) {
// We should only log events for application and session caches.
// Request caches shouldn't have events as all data is lost at the end of the request.
// Events should only be logged once of course and likely several definitions are watching so we
// track its logging with $invalidationeventset.
$logevent = ($invalidationeventset === false && $definition->get_mode() !== cache_store::MODE_REQUEST);
if ($logevent) {
// Get the event invalidation cache.
$cache = cache::make('core', 'eventinvalidation');
// Get any existing invalidated keys for this cache.
@ -313,23 +317,25 @@ class cache_helper {
$instance = cache_config::instance();
$invalidationeventset = false;
$factory = cache_factory::instance();
$inuse = $factory->get_caches_in_use();
foreach ($instance->get_definitions() as $name => $definitionarr) {
$definition = cache_definition::load($name, $definitionarr);
if ($definition->invalidates_on_event($event)) {
// Check if this definition would result in a loader with persistent data being in use.
if ($definition->data_should_be_persistent()) {
// There may be a persistent cache loader. Lets purge that first so that any persistent data is removed.
$cache = $factory->create_cache_from_definition($definition->get_component(), $definition->get_area());
$cache->purge();
}
// Get all of the store instances that are in use for this store.
$stores = $factory->get_store_instances_in_use($definition);
foreach ($stores as $store) {
// Purge each store individually.
$store->purge();
// First up check if there is a cache loader for this definition already.
// If there is we need to invalidate the keys from there.
$definitionkey = $definition->get_component().'/'.$definition->get_area();
if (isset($inuse[$definitionkey])) {
$inuse[$definitionkey]->purge();
}
// We should only log events for application and session caches.
// Request caches shouldn't have events as all data is lost at the end of the request.
// Events should only be logged once of course and likely several definitions are watching so we
// track its logging with $invalidationeventset.
$logevent = ($invalidationeventset === false && $definition->get_mode() !== cache_store::MODE_REQUEST);
// We need to flag the event in the "Event invalidation" cache if it hasn't already happened.
if ($invalidationeventset === false) {
if ($logevent && $invalidationeventset === false) {
// Get the event invalidation cache.
$cache = cache::make('core', 'eventinvalidation');
// Create a key to invalidate all.