@Override
public boolean accept(
K key,
Object oldValue,
Metadata oldMetadata,
Object newValue,
Metadata newMetadata,
EventType eventType) {
return filter.accept(key);
}
@Override
public void process(
KeyFilter<? super K> filter,
final CacheLoaderTask<K, V> task,
Executor executor,
final boolean fetchValue,
final boolean fetchMetadata) {
filter = PersistenceUtil.notNull(filter);
ArrayList<KeyValuePair<K, FileEntry>> keysToLoad = new ArrayList<>(entries.size());
synchronized (entries) {
for (Map.Entry<K, FileEntry> e : entries.entrySet()) {
if (filter.accept(e.getKey())) keysToLoad.add(new KeyValuePair<>(e.getKey(), e.getValue()));
}
Collections.sort(
keysToLoad,
new Comparator<KeyValuePair<K, FileEntry>>() {
@Override
public int compare(KeyValuePair<K, FileEntry> o1, KeyValuePair<K, FileEntry> o2) {
long offset1 = o1.getValue().offset;
long offset2 = o2.getValue().offset;
return offset1 < offset2 ? -1 : offset1 == offset2 ? 0 : 1;
}
});
// keysToLoad values (i.e. FileEntries) must not be used past this point
}
ExecutorAllCompletionService eacs = new ExecutorAllCompletionService(executor);
final TaskContextImpl taskContext = new TaskContextImpl();
for (KeyValuePair<K, FileEntry> e : keysToLoad) {
if (taskContext.isStopped()) break;
final K key = e.getKey();
eacs.submit(
new Callable<Void>() {
@Override
public Void call() throws Exception {
try {
final MarshalledEntry marshalledEntry = _load(key, fetchValue, fetchMetadata);
if (marshalledEntry != null) {
task.processEntry(marshalledEntry, taskContext);
}
return null;
} catch (Exception e) {
log.errorExecutingParallelStoreTask(e);
throw e;
}
}
});
}
eacs.waitUntilAllCompleted();
if (eacs.isExceptionThrown()) {
throw new PersistenceException("Execution exception!", eacs.getFirstException());
}
}
@Override
public void executeTask(
final KeyFilter<? super K> filter,
final BiConsumer<? super K, InternalCacheEntry<K, V>> action)
throws InterruptedException {
if (filter == null) throw new IllegalArgumentException("No filter specified");
if (action == null) throw new IllegalArgumentException("No action specified");
entries.forEach(
(K key, InternalCacheEntry<K, V> value) -> {
if (filter.accept(key)) {
action.accept(key, value);
}
});
// TODO figure out the way how to do interruption better (during iteration)
if (Thread.currentThread().isInterrupted()) {
throw new InterruptedException();
}
}