| /* |
| * 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.table.runtime; |
| |
| import org.apache.flink.streaming.api.TimerService; |
| import org.apache.flink.streaming.api.operators.AbstractStreamOperator; |
| import org.apache.flink.streaming.api.operators.ChainingStrategy; |
| import org.apache.flink.streaming.api.operators.InternalTimerService; |
| import org.apache.flink.streaming.api.watermark.Watermark; |
| import org.apache.flink.streaming.runtime.streamrecord.StreamRecord; |
| import org.apache.flink.streaming.runtime.tasks.ProcessingTimeService; |
| |
| import static org.apache.flink.util.Preconditions.checkNotNull; |
| import static org.apache.flink.util.Preconditions.checkState; |
| |
| /** |
| * AbstractProcessStreamOperator is a base class for stream operators without key. |
| * |
| * @param <OUT> The output type of the operator. |
| */ |
| public abstract class AbstractProcessStreamOperator<OUT> extends AbstractStreamOperator<OUT> { |
| |
| /** We listen to this ourselves because we don't have an {@link InternalTimerService}. */ |
| protected long currentWatermark = Long.MIN_VALUE; |
| |
| protected transient ContextImpl ctx; |
| |
| protected boolean closed = false; |
| |
| public AbstractProcessStreamOperator() { |
| setChainingStrategy(ChainingStrategy.ALWAYS); |
| } |
| |
| @Override |
| public void open() throws Exception { |
| super.open(); |
| this.ctx = new ContextImpl(getProcessingTimeService()); |
| } |
| |
| @Override |
| public void processWatermark(Watermark mark) throws Exception { |
| super.processWatermark(mark); |
| currentWatermark = mark.getTimestamp(); |
| } |
| |
| @Override |
| public void close() throws Exception { |
| super.close(); |
| closed = true; |
| } |
| |
| @Override |
| public void dispose() throws Exception { |
| if (!closed) { |
| close(); |
| } |
| super.dispose(); |
| } |
| |
| /** |
| * Information available in an invocation of processElement. |
| */ |
| protected class ContextImpl implements TimerService { |
| |
| protected final ProcessingTimeService timerService; |
| |
| public StreamRecord<?> element; |
| |
| ContextImpl(ProcessingTimeService timerService) { |
| this.timerService = checkNotNull(timerService); |
| } |
| |
| public Long timestamp() { |
| checkState(element != null); |
| |
| if (element.hasTimestamp()) { |
| return element.getTimestamp(); |
| } else { |
| return null; |
| } |
| } |
| |
| @Override |
| public long currentProcessingTime() { |
| return timerService.getCurrentProcessingTime(); |
| } |
| |
| @Override |
| public long currentWatermark() { |
| return currentWatermark; |
| } |
| |
| @Override |
| public void registerProcessingTimeTimer(long time) { |
| throw new UnsupportedOperationException("Setting timers is only supported on a keyed streams."); |
| } |
| |
| @Override |
| public void registerEventTimeTimer(long time) { |
| throw new UnsupportedOperationException("Setting timers is only supported on a keyed streams."); |
| } |
| |
| public TimerService timerService() { |
| return this; |
| } |
| } |
| } |