001/*
002 * (C) Copyright 2006-2010 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     <a href="mailto:[email protected]">Nicolas Ulrich</a>
018 *
019 */
020
021package org.nuxeo.business.days.management.checker;
022
023import java.io.BufferedReader;
024import java.io.FileReader;
025import java.io.IOException;
026import java.io.InputStream;
027import java.io.InputStreamReader;
028import java.io.Reader;
029import java.text.ParseException;
030import java.util.Date;
031import java.util.HashSet;
032import java.util.Set;
033
034import org.apache.commons.lang3.time.FastDateFormat;
035import org.apache.commons.logging.Log;
036import org.apache.commons.logging.LogFactory;
037import org.nuxeo.runtime.model.ComponentInstance;
038import org.nuxeo.runtime.model.DefaultComponent;
039
040/**
041 * Holidays checker implementation which loads the holidays dates in a CVS file. The extension point "configuration" of
042 * the component "org.nuxeo.business.days.management.checker.csv" allows to specify where is located the CSV file.
043 *
044 * @author Nicolas Ulrich
045 */
046public class CSVHolidaysChecker extends DefaultComponent implements HolidaysChecker {
047
048    private static final Log log = LogFactory.getLog(CSVHolidaysChecker.class);
049
050    private static final FastDateFormat formater = FastDateFormat.getInstance("dd/MM/yyyy");
051
052    private static Set<Date> dates = new HashSet<Date>();
053
054    public boolean isHoliday(Date date) {
055        return dates.contains(date);
056    }
057
058    /**
059     * Read the CVS file in order to load hollidays.cvs
060     */
061    private void initDates(String fileName, boolean isEmbedded) {
062
063        if (fileName == null) {
064            return;
065        }
066
067        try (BufferedReader buffer = new BufferedReader(getReader(fileName, isEmbedded))) {
068
069            String line;
070            while ((line = buffer.readLine()) != null) {
071                dates.add(formater.parse(line));
072            }
073
074        } catch (IOException e) {
075            log.error("Unable to read the CSV file", e);
076        } catch (ParseException e) {
077            log.error("The CSV file is not formatted", e);
078        }
079
080    }
081
082    protected Reader getReader(String fileName, boolean isEmbedded) throws IOException {
083        if (isEmbedded) {
084            InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(fileName);
085            return new InputStreamReader(is);
086        } else {
087            return new FileReader(fileName);
088        }
089    }
090
091    @Override
092    public void registerContribution(Object contribution, String extensionPoint, ComponentInstance contributor) {
093
094        if (extensionPoint.equals("configuration")) {
095
096            CSVConfigurationDescriptor conf = ((CSVConfigurationDescriptor) contribution);
097            initDates(conf.csvFilePath, conf.embedded);
098
099        }
100    }
101
102}