001/* 002 * #%L 003 * Netarchivesuite - harvester 004 * %% 005 * Copyright (C) 2005 - 2014 The Royal Danish Library, the Danish State and University Library, 006 * the National Library of France and the Austrian National Library. 007 * %% 008 * This program is free software: you can redistribute it and/or modify 009 * it under the terms of the GNU Lesser General Public License as 010 * published by the Free Software Foundation, either version 2.1 of the 011 * License, or (at your option) any later version. 012 * 013 * This program is distributed in the hope that it will be useful, 014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 016 * GNU General Lesser Public License for more details. 017 * 018 * You should have received a copy of the GNU General Lesser Public 019 * License along with this program. If not, see 020 * <http://www.gnu.org/licenses/lgpl-2.1.html>. 021 * #L% 022 */ 023package dk.netarkivet.harvester.harvesting.frontier; 024 025import dk.netarkivet.harvester.harvesting.frontier.FullFrontierReport.ReportIterator; 026 027/** 028 * Filters a frontier report to include only lines that represent exhausted queues. An Heritrix queue is exhausted when 029 * its current size is zero. 030 */ 031public class ExhaustedQueuesFilter extends MaxSizeFrontierReportExtract { 032 033 @Override 034 public InMemoryFrontierReport process(FrontierReport initialFrontier) { 035 InMemoryFrontierReport result = new InMemoryFrontierReport(initialFrontier.getJobName()); 036 037 FullFrontierReport full = (FullFrontierReport) initialFrontier; 038 ReportIterator iter = full.iterateOnDuplicateCurrentSize(0L); 039 040 int maxSize = getMaxSize(); 041 int addedLines = 0; 042 while (addedLines <= maxSize && iter.hasNext()) { 043 result.addLine(new FrontierReportLine(iter.next())); 044 addedLines++; 045 } 046 047 return result; 048 } 049 050}