be.roots.taconic.pricingguide.respository.TemplateRepositoryImpl.java Source code

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Here is the source code for be.roots.taconic.pricingguide.respository.TemplateRepositoryImpl.java

Source

package be.roots.taconic.pricingguide.respository;

/**
 *  This file is part of the Taconic Pricing Guide generator.  This code will
 *  generate a full featured PDF Pricing Guide by using using iText
 *  (http://www.itextpdf.com) based on JSON files.
 *
 *  Copyright (C) 2015  Roots nv
 *  Authors: Koen Dehaen (koen.dehaen@roots.be)
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as
 *  published by the Free Software Foundation, either version 3 of the
 *  License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *  For more information, please contact Roots nv at this address: support@roots.be
 *
 */

import be.roots.taconic.pricingguide.service.DefaultService;
import be.roots.taconic.pricingguide.util.HttpUtil;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;

@Service
public class TemplateRepositoryImpl implements TemplateRepository {

    private final static Logger LOGGER = Logger.getLogger(TemplateRepositoryImpl.class);

    @Autowired
    private DefaultService defaultService;

    private final LoadingCache<String, byte[]> templateLoadingCache = CacheBuilder.newBuilder().maximumSize(20)
            .expireAfterAccess(1, TimeUnit.HOURS).build(new CacheLoader<String, byte[]>() {
                public byte[] load(String key) throws IOException {
                    return HttpUtil.readByteArray(key, defaultService.getUserName(), defaultService.getPassword());
                }
            });

    @Override
    public byte[] findOne(String templateUrl) {
        try {
            return templateLoadingCache.get(templateUrl);
        } catch (ExecutionException e) {
            LOGGER.error(e.getLocalizedMessage(), e);
        }
        return null;
    }

}