| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.flink.statefun.flink.core.functions; |
| |
| import java.util.Map.Entry; |
| import java.util.Objects; |
| import org.apache.flink.api.common.state.MapState; |
| import org.apache.flink.api.common.state.MapStateDescriptor; |
| import org.apache.flink.runtime.state.KeyedStateBackend; |
| import org.apache.flink.runtime.state.KeyedStateFunction; |
| import org.apache.flink.runtime.state.VoidNamespace; |
| import org.apache.flink.runtime.state.VoidNamespaceSerializer; |
| import org.apache.flink.statefun.flink.core.message.Message; |
| |
| final class AsyncOperationFailureNotifier |
| implements KeyedStateFunction<String, MapState<Long, Message>> { |
| |
| static void fireExpiredAsyncOperations( |
| MapStateDescriptor<Long, Message> asyncOperationStateDescriptor, |
| Reductions reductions, |
| KeyedStateBackend<String> keyedStateBackend) |
| throws Exception { |
| |
| AsyncOperationFailureNotifier asyncOperationFailureNotifier = |
| new AsyncOperationFailureNotifier(reductions); |
| |
| keyedStateBackend.applyToAllKeys( |
| VoidNamespace.get(), |
| VoidNamespaceSerializer.INSTANCE, |
| asyncOperationStateDescriptor, |
| asyncOperationFailureNotifier); |
| |
| if (asyncOperationFailureNotifier.enqueued()) { |
| reductions.processEnvelopes(); |
| } |
| } |
| |
| private final Reductions reductions; |
| |
| private boolean enqueued; |
| |
| private AsyncOperationFailureNotifier(Reductions reductions) { |
| this.reductions = Objects.requireNonNull(reductions); |
| } |
| |
| @Override |
| public void process(String key, MapState<Long, Message> state) throws Exception { |
| for (Entry<Long, Message> entry : state.entries()) { |
| Long futureId = entry.getKey(); |
| Message metadataMessage = entry.getValue(); |
| reductions.enqueueAsyncOperationAfterRestore(futureId, metadataMessage); |
| enqueued = true; |
| } |
| } |
| |
| private boolean enqueued() { |
| return enqueued; |
| } |
| } |