| /* |
| * 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.servicecomb.pack.alpha.spec.tcc.db.callback; |
| |
| import static java.util.concurrent.TimeUnit.MILLISECONDS; |
| |
| import java.lang.invoke.MethodHandles; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.ScheduledExecutorService; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class TccPendingTaskRunner { |
| |
| private final ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor(); |
| |
| private final BlockingQueue<Runnable> pendingTasks = new LinkedBlockingQueue<>(); |
| |
| private final int delay; |
| |
| private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| public TccPendingTaskRunner(int delay) { |
| this.delay = delay; |
| } |
| |
| public void start() { |
| scheduler.scheduleWithFixedDelay(() -> { |
| try { |
| pendingTasks.take().run(); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| } catch (Exception e) { |
| LOG.error(e.getMessage()); |
| } |
| }, 0, delay, MILLISECONDS); |
| } |
| |
| public void shutdown() { |
| scheduler.shutdown(); |
| } |
| |
| public BlockingQueue<Runnable> getPendingTasks() { |
| return pendingTasks; |
| } |
| } |