| /* |
| * 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.streaming.tests.verify; |
| |
| import org.apache.flink.api.common.functions.AggregateFunction; |
| import org.apache.flink.api.common.state.AggregatingState; |
| import org.apache.flink.api.common.state.AggregatingStateDescriptor; |
| import org.apache.flink.api.common.state.State; |
| import org.apache.flink.api.common.typeutils.TypeSerializer; |
| import org.apache.flink.api.common.typeutils.base.IntSerializer; |
| import org.apache.flink.api.common.typeutils.base.LongSerializer; |
| import org.apache.flink.runtime.state.FunctionInitializationContext; |
| |
| import javax.annotation.Nonnull; |
| |
| import java.util.List; |
| |
| class TtlAggregatingStateVerifier extends AbstractTtlStateVerifier< |
| AggregatingStateDescriptor<Integer, Long, String>, AggregatingState<Integer, String>, Long, Integer, String> { |
| TtlAggregatingStateVerifier() { |
| super(new AggregatingStateDescriptor<>("TtlAggregatingStateVerifier", AGG_FUNC, LongSerializer.INSTANCE)); |
| } |
| |
| @Override |
| @Nonnull |
| State createState(@Nonnull FunctionInitializationContext context) { |
| return context.getKeyedStateStore().getAggregatingState(stateDesc); |
| } |
| |
| @Override |
| @Nonnull |
| public TypeSerializer<Integer> getUpdateSerializer() { |
| return IntSerializer.INSTANCE; |
| } |
| |
| @Override |
| @Nonnull |
| public Integer generateRandomUpdate() { |
| return RANDOM.nextInt(100); |
| } |
| |
| @Override |
| String getInternal(@Nonnull AggregatingState<Integer, String> state) throws Exception { |
| return state.get(); |
| } |
| |
| @Override |
| void updateInternal(@Nonnull AggregatingState<Integer, String> state, Integer update) throws Exception { |
| state.add(update); |
| } |
| |
| @Override |
| String expected(@Nonnull List<ValueWithTs<Integer>> updates, long currentTimestamp) { |
| if (updates.isEmpty()) { |
| return null; |
| } |
| long acc = AGG_FUNC.createAccumulator(); |
| long lastTs = updates.get(0).getTimestamp(); |
| for (ValueWithTs<Integer> update : updates) { |
| if (expired(lastTs, update.getTimestamp())) { |
| acc = AGG_FUNC.createAccumulator(); |
| } |
| acc = AGG_FUNC.add(update.getValue(), acc); |
| lastTs = update.getTimestamp(); |
| } |
| return expired(lastTs, currentTimestamp) ? null : AGG_FUNC.getResult(acc); |
| } |
| |
| private static final AggregateFunction<Integer, Long, String> AGG_FUNC = |
| new AggregateFunction<Integer, Long, String>() { |
| @Override |
| public Long createAccumulator() { |
| return 3L; |
| } |
| |
| @Override |
| public Long add(Integer value, Long accumulator) { |
| return accumulator + value; |
| } |
| |
| @Override |
| public String getResult(Long accumulator) { |
| return Long.toString(accumulator); |
| } |
| |
| @Override |
| public Long merge(Long a, Long b) { |
| return a + b; |
| } |
| }; |
| } |