org.italiangrid.storm.webdav.authz.vomap.VOMapDetailServiceBuilder.java Source code

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Here is the source code for org.italiangrid.storm.webdav.authz.vomap.VOMapDetailServiceBuilder.java

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/**
 * Copyright (c) Istituto Nazionale di Fisica Nucleare, 2014.
 *
 * Licensed 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.italiangrid.storm.webdav.authz.vomap;

import java.io.File;
import java.io.FilenameFilter;
import java.util.HashSet;
import java.util.Set;

import org.apache.commons.io.FilenameUtils;
import org.italiangrid.storm.webdav.config.ServiceConfiguration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class VOMapDetailServiceBuilder {

    private static final String VOMAPFILE_SUFFIX = ".vomap";

    private static final Logger logger = LoggerFactory.getLogger(VOMapDetailServiceBuilder.class);

    private final ServiceConfiguration serviceConf;

    @Autowired
    public VOMapDetailServiceBuilder(ServiceConfiguration conf) {

        this.serviceConf = conf;
    }

    private void directorySanityChecks(File directory) {

        if (!directory.exists())
            throw new IllegalArgumentException(
                    "VOMS map files configuration directory does not exists: " + directory.getAbsolutePath());

        if (!directory.isDirectory())
            throw new IllegalArgumentException(
                    "VOMS map files configuration directory is not a directory: " + directory.getAbsolutePath());

        if (!directory.canRead())
            throw new IllegalArgumentException(
                    "VOMS map files configuration directory is not readable: " + directory.getAbsolutePath());

        if (!directory.canExecute())
            throw new IllegalArgumentException(
                    "VOMS map files configuration directory is not traversable: " + directory.getAbsolutePath());

    }

    public VOMapDetailsService build() {

        if (!serviceConf.enableVOMapFiles()) {
            logger.info("VOMS Map files disabled.");
            return null;
        }

        File configDir = new File(serviceConf.getVOMapFilesConfigDir());
        directorySanityChecks(configDir);

        File[] files = configDir.listFiles(new FilenameFilter() {

            @Override
            public boolean accept(File dir, String name) {

                return name.endsWith(VOMAPFILE_SUFFIX);

            }
        });

        if (files.length == 0) {
            logger.warn("No mapfiles found in {}. Was looking for files ending in {}", VOMAPFILE_SUFFIX);
            return null;
        }

        Set<VOMembershipProvider> providers = new HashSet<VOMembershipProvider>();
        for (File f : files) {
            try {
                String voName = FilenameUtils.removeExtension(f.getName());

                VOMembershipProvider prov = new DefaultVOMembershipProvider(voName,
                        new MapfileVOMembershipSource(voName, f));

                providers.add(prov);

            } catch (Throwable t) {
                logger.error("Error parsing mapfile {}: {}", f.getAbsolutePath(), t.getMessage(), t);
                continue;
            }
        }

        return new DefaultVOMapDetailsService(providers, serviceConf.getVOMapFilesRefreshIntervalInSeconds());
    }

}