| /* |
| * 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.test.util; |
| |
| import org.apache.flink.streaming.api.functions.source.ParallelSourceFunction; |
| |
| /** Source that emits an integers indefinitely. */ |
| public class InfiniteIntegerSource implements ParallelSourceFunction<Integer> { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private volatile boolean running = true; |
| |
| @Override |
| public void run(SourceContext<Integer> ctx) throws Exception { |
| int counter = 0; |
| while (running) { |
| synchronized (ctx.getCheckpointLock()) { |
| ctx.collect(counter++); |
| } |
| } |
| } |
| |
| @Override |
| public void cancel() { |
| running = false; |
| } |
| } |