/**
* Check if resources from a group were changed. If a change is detected, the changeListener will
* be invoked.
*
* @param cacheKey the cache key which was requested. The key contains the groupName which has to
* be checked for changes.
*/
public void check(final CacheKey cacheKey, final Callback callback) {
notNull(cacheKey);
LOG.debug("started");
final StopWatch watch = new StopWatch();
watch.start("detect changes");
try {
final Group group =
new WroModelInspector(modelFactory.create()).getGroupByName(cacheKey.getGroupName());
if (isGroupChanged(group.collectResourcesOfType(cacheKey.getType()), callback)) {
callback.onGroupChanged(cacheKey);
cacheStrategy.put(cacheKey, null);
}
resourceChangeDetector.reset();
} catch (final Exception e) {
onException(e);
} finally {
watch.stop();
LOG.debug("resource watcher info: {}", watch.prettyPrint());
}
}
/**
* Invoked when a resource change detected.
*
* @param key {@link CacheKey} which has to be invalidated because the corresponding group
* contains stale resources. @VisibleForTesting
*/
void onGroupChanged(final CacheKey key) {
LOG.debug("detected change for cacheKey: {}", key);
cacheStrategy.put(key, null);
}
