| /* |
| * 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.samza.operators.triggers; |
| |
| import java.time.Duration; |
| |
| /* |
| * A {@link Trigger} that fires when there are no new {@link MessageEnvelope}s in the window pane for the specified duration. |
| * @param <M> the type of the incoming {@link MessageEnvelope} |
| */ |
| public class TimeSinceLastMessageTrigger<M> implements Trigger<M>, TimeBasedTrigger<M> { |
| |
| private final Duration duration; |
| private final DurationCharacteristic characteristic = DurationCharacteristic.PROCESSING_TIME; |
| |
| TimeSinceLastMessageTrigger(Duration duration) { |
| this.duration = duration; |
| } |
| |
| @Override |
| public Duration getDuration() { |
| return duration; |
| } |
| |
| public DurationCharacteristic getCharacteristic() { |
| return characteristic; |
| } |
| } |