/** {@inheritDoc} */
@SuppressWarnings("unchecked")
@Override
public boolean addAll(final Collection<? extends T> items) {
A.notNull(items, "items");
try {
boolean retVal;
int cnt = 0;
while (true) {
try (IgniteInternalTx tx = cache.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {
Long idx = (Long) cache.invoke(queueKey, new AddProcessor(id, items.size())).get();
if (idx != null) {
checkRemoved(idx);
Map<GridCacheQueueItemKey, T> putMap = new HashMap<>();
for (T item : items) {
putMap.put(itemKey(idx), item);
idx++;
}
cache.putAll(putMap);
retVal = true;
} else retVal = false;
tx.commit();
break;
} catch (ClusterTopologyCheckedException e) {
if (e instanceof ClusterGroupEmptyCheckedException) throw e;
if (cnt++ == MAX_UPDATE_RETRIES) throw e;
else {
U.warn(log, "Failed to add item, will retry [err=" + e + ']');
U.sleep(RETRY_DELAY);
}
}
}
return retVal;
} catch (IgniteCheckedException e) {
throw U.convertException(e);
}
}
/** {@inheritDoc} */
@SuppressWarnings("unchecked")
@Override
public boolean offer(final T item) throws IgniteException {
A.notNull(item, "item");
try {
boolean retVal;
int cnt = 0;
while (true) {
try {
try (IgniteInternalTx tx = cache.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {
Long idx = (Long) cache.invoke(queueKey, new AddProcessor(id, 1)).get();
if (idx != null) {
checkRemoved(idx);
cache.getAndPut(itemKey(idx), item);
retVal = true;
} else retVal = false;
tx.commit();
break;
}
} catch (ClusterTopologyCheckedException e) {
if (e instanceof ClusterGroupEmptyCheckedException) throw e;
if (cnt++ == MAX_UPDATE_RETRIES) throw e;
else {
U.warn(log, "Failed to add item, will retry [err=" + e + ']');
U.sleep(RETRY_DELAY);
}
}
}
return retVal;
} catch (IgniteCheckedException e) {
throw U.convertException(e);
}
}
/** {@inheritDoc} */
@SuppressWarnings("unchecked")
@Nullable
@Override
public T poll() throws IgniteException {
try {
int cnt = 0;
T retVal;
while (true) {
try (IgniteInternalTx tx = cache.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {
Long idx = (Long) cache.invoke(queueKey, new PollProcessor(id)).get();
if (idx != null) {
checkRemoved(idx);
retVal = (T) cache.getAndRemove(itemKey(idx));
assert retVal != null : idx;
} else retVal = null;
tx.commit();
break;
} catch (ClusterTopologyCheckedException e) {
if (e instanceof ClusterGroupEmptyCheckedException) throw e;
if (cnt++ == MAX_UPDATE_RETRIES) throw e;
else {
U.warn(log, "Failed to add item, will retry [err=" + e + ']');
U.sleep(RETRY_DELAY);
}
}
}
return retVal;
} catch (IgniteCheckedException e) {
throw U.convertException(e);
}
}
/** {@inheritDoc} */
@SuppressWarnings("unchecked")
@Override
protected void removeItem(final long rmvIdx) throws IgniteCheckedException {
try {
int cnt = 0;
while (true) {
try (IgniteInternalTx tx = cache.txStartEx(PESSIMISTIC, REPEATABLE_READ)) {
Long idx = (Long) cache.invoke(queueKey, new RemoveProcessor(id, rmvIdx)).get();
if (idx != null) {
checkRemoved(idx);
boolean rmv = cache.remove(itemKey(idx));
assert rmv : idx;
}
tx.commit();
break;
} catch (ClusterTopologyCheckedException e) {
if (e instanceof ClusterGroupEmptyCheckedException) throw e;
if (cnt++ == MAX_UPDATE_RETRIES) throw e;
else {
U.warn(log, "Failed to add item, will retry [err=" + e + ']');
U.sleep(RETRY_DELAY);
}
}
}
} catch (IgniteCheckedException e) {
throw U.convertException(e);
}
}