org.silverpeas.silverstatistics.volume.DirectoryVolumeService.java Source code

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Here is the source code for org.silverpeas.silverstatistics.volume.DirectoryVolumeService.java

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/*
 * Copyright (C) 2000 - 2013 Silverpeas
 *
 * 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.
 *
 * As a special exception to the terms and conditions of version 3.0 of
 * the GPL, you may redistribute this Program in connection withWriter Free/Libre
 * Open Source Software ("FLOSS") applications as described in Silverpeas's
 * FLOSS exception.  You should have recieved a copy of the text describing
 * the FLOSS exception, and it is also available here:
 * "http://www.silverpeas.org/legal/licensing"
 *
 * 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/>.
 */
package org.silverpeas.silverstatistics.volume;

import com.silverpeas.util.StringUtil;
import com.stratelia.webactiv.beans.admin.OrganizationController;
import com.stratelia.webactiv.util.FileRepositoryManager;
import org.apache.commons.io.filefilter.AndFileFilter;
import org.apache.commons.io.filefilter.DirectoryFileFilter;
import org.apache.commons.io.filefilter.NameFileFilter;

import java.io.File;
import java.io.FileFilter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;

/**
 * Compute the size in terms of number of files and total size of all the components available for a
 * specified user.
 */
public class DirectoryVolumeService {

    private final File workspace;

    public DirectoryVolumeService() {
        workspace = new File(FileRepositoryManager.getUploadPath());
    }

    public DirectoryVolumeService(File workspace) {
        this.workspace = workspace;
    }

    private List<DirectoryWalkerSizeComputer> buildScanners(File dataDirectory, String userId) {
        File[] files = listDirectoriesToScan(dataDirectory, userId);
        List<DirectoryWalkerSizeComputer> result = new ArrayList<DirectoryWalkerSizeComputer>(files.length);
        for (File componentDir : files) {
            result.add(new DirectoryWalkerSizeComputer((componentDir)));
        }
        return result;
    }

    private List<DirectorySizeComputer> buildSizeScanners(File dataDirectory, String userId) {
        File[] files = listDirectoriesToScan(dataDirectory, userId);
        List<DirectorySizeComputer> result = new ArrayList<DirectorySizeComputer>(files.length);
        for (File componentDir : files) {
            result.add(new DirectorySizeComputer((componentDir)));
        }
        return result;
    }

    private List<FileNumberComputer> buildFileNumberScanners(File dataDirectory, String userId) {
        File[] files = listDirectoriesToScan(dataDirectory, userId);
        List<FileNumberComputer> result = new ArrayList<FileNumberComputer>(files.length);
        for (File componentDir : files) {
            result.add(new FileNumberComputer((componentDir)));
        }
        return result;
    }

    public List<DirectoryStats> getVolumes(String userId) throws InterruptedException, ExecutionException {
        List<DirectoryWalkerSizeComputer> scanners = buildScanners(workspace, userId);
        List<DirectoryStats> volume = new ArrayList<DirectoryStats>(scanners.size());
        ExecutorService executor = Executors.newFixedThreadPool(getNumberOfThread());
        List<Future<DirectoryStats>> result = executor.invokeAll(scanners);
        try {
            for (Future<DirectoryStats> future : result) {
                volume.add(future.get());
            }
        } finally {
            executor.shutdown();
        }
        return volume;
    }

    public long getTotalSize(String userId) throws InterruptedException, ExecutionException {
        List<DirectorySizeComputer> scanners = buildSizeScanners(workspace, userId);
        long totalSize = 0L;
        ExecutorService executor = Executors.newFixedThreadPool(getNumberOfThread());
        List<Future<DirectoryStats>> result = executor.invokeAll(scanners);
        try {
            for (Future<DirectoryStats> future : result) {
                DirectoryStats stats = future.get();
                totalSize = totalSize + stats.getDirectorySize();
            }
        } finally {
            executor.shutdown();
        }
        return totalSize;
    }

    public Map<String, String[]> getSizeVentilation(String userId) throws InterruptedException, ExecutionException {
        List<DirectorySizeComputer> scanners = buildSizeScanners(workspace, userId);
        Map<String, String[]> volume = new HashMap<String, String[]>(scanners.size());
        ExecutorService executor = Executors.newFixedThreadPool(getNumberOfThread());
        List<Future<DirectoryStats>> result = executor.invokeAll(scanners);
        try {
            for (Future<DirectoryStats> future : result) {
                DirectoryStats stats = future.get();
                volume.put(stats.getDirectoryName(),
                        new String[] { String.valueOf(stats.getDirectorySize()), null, null });
            }
        } finally {
            executor.shutdown();
        }
        return volume;
    }

    public Map<String, String[]> getFileNumberVentilation(String userId)
            throws InterruptedException, ExecutionException {
        List<FileNumberComputer> scanners = buildFileNumberScanners(workspace, userId);
        Map<String, String[]> volume = new HashMap<String, String[]>(scanners.size());
        ExecutorService executor = Executors.newFixedThreadPool(getNumberOfThread());
        List<Future<DirectoryStats>> result = executor.invokeAll(scanners);
        try {
            for (Future<DirectoryStats> future : result) {
                DirectoryStats stats = future.get();
                volume.put(stats.getDirectoryName(),
                        new String[] { String.valueOf(stats.getNumberOfFiles()), null, null });
            }
        } finally {
            executor.shutdown();
        }
        return volume;
    }

    @SuppressWarnings("unchecked")
    private File[] listDirectoriesToScan(File dataDirectory, String userId) {
        FileFilter filter;
        OrganizationController controller = new OrganizationController();
        if (!StringUtil.isDefined(userId) || controller.getUserDetail(userId).isAccessAdmin()) {
            filter = DirectoryFileFilter.DIRECTORY;
        } else {
            String[] spaceIds = controller.getAllSpaceIds(userId);
            List<String> componentIds = new ArrayList<String>(spaceIds.length * 10);
            for (String spaceId : spaceIds) {
                componentIds.addAll(Arrays.asList(controller.getAllComponentIdsRecur(spaceId)));
            }
            filter = new AndFileFilter(DirectoryFileFilter.DIRECTORY, new NameFileFilter(componentIds));
        }
        return dataDirectory.listFiles(filter);
    }

    private int getNumberOfThread() {
        return Runtime.getRuntime().availableProcessors();
    }
}