/* * 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 software.amazon.flink.example.source; import java.time.Instant; public class SawToothSourceFunction extends DataGenSourceFunction { private static final long PERIOD = 60 * 60 * 1000; public SawToothSourceFunction(final String category) { super(category); } @Override long getValue(Instant timestamp) { long y = timestamp.toEpochMilli() % PERIOD; return (long) (100D / PERIOD * y); } }