| /* |
| * 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.nutch.webui.client.impl; |
| |
| import java.lang.invoke.MethodHandles; |
| import java.util.List; |
| |
| import org.apache.commons.collections4.CollectionUtils; |
| import org.apache.nutch.webui.client.model.Crawl; |
| import org.apache.nutch.webui.client.model.JobInfo; |
| import org.apache.nutch.webui.client.model.JobInfo.State; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.collect.Lists; |
| |
| /** |
| * This class implements crawl cycle as in crawl script |
| * |
| * @author feodor |
| * |
| */ |
| public class CrawlingCycle { |
| private static final Logger LOG = LoggerFactory |
| .getLogger(MethodHandles.lookup().lookupClass()); |
| |
| private CrawlingCycleListener listener; |
| private RemoteCommandExecutor executor; |
| private Crawl crawl; |
| |
| private List<RemoteCommand> remoteCommands; |
| private List<RemoteCommand> executedCommands = Lists.newArrayList(); |
| |
| public CrawlingCycle(CrawlingCycleListener listener, |
| RemoteCommandExecutor executor, Crawl crawl, List<RemoteCommand> commands) { |
| this.listener = listener; |
| this.executor = executor; |
| this.crawl = crawl; |
| this.remoteCommands = commands; |
| } |
| |
| public synchronized void executeCrawlCycle() { |
| listener.crawlingStarted(crawl); |
| |
| for (RemoteCommand command : remoteCommands) { |
| JobInfo jobInfo = executor.executeRemoteJob(command); |
| command.setJobInfo(jobInfo); |
| |
| LOG.info("Executed remote command data: {}", command); |
| |
| if (jobInfo.getState() == State.FAILED) { |
| listener.onCrawlError(crawl, jobInfo.getMsg()); |
| return; |
| } |
| |
| executedCommands.add(command); |
| listener.commandExecuted(crawl, command, calculateProgress()); |
| } |
| listener.crawlingFinished(crawl); |
| } |
| |
| private int calculateProgress() { |
| if (CollectionUtils.isEmpty(remoteCommands)) { |
| return 0; |
| } |
| return (int) ((float) executedCommands.size() |
| / (float) remoteCommands.size() * 100); |
| } |
| |
| } |