| /* |
| 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.edgent.samples.topology; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.edgent.providers.direct.DirectProvider; |
| import org.apache.edgent.topology.TStream; |
| import org.apache.edgent.topology.Topology; |
| |
| /* |
| * A basic application used in the Edgent "Getting Started Guide": |
| * https://edgent.apache.org/docs/edgent-getting-started.html |
| */ |
| public class TempSensorApplication { |
| public static void main(String[] args) throws Exception { |
| TempSensor sensor = new TempSensor(); |
| DirectProvider dp = new DirectProvider(); |
| Topology topology = dp.newTopology(); |
| |
| TStream<Double> tempReadings = topology.poll(sensor, 1, TimeUnit.MILLISECONDS); |
| TStream<Double> filteredReadings = tempReadings.filter(reading -> reading < 50 || reading > 80); |
| filteredReadings.print(); |
| |
| dp.submit(topology); |
| } |
| } |