Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * 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 General Public License for more details.

 * 

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 

 * MA  02110-1301, USA.

 * 

 */

/*

 * AUTHORS (In addition to CIT):

 * 2010 {Prodevelop}   {Task}

 */

package org.gvsig.installer.lib.impl.execution;

import java.io.BufferedInputStream;

import java.io.File;

import java.io.FileFilter;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStream;

import java.net.URL;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.installer.lib.api.InstallerManager;

import org.gvsig.installer.lib.api.PackageInfo;

import org.gvsig.installer.lib.api.execution.InstallPackageService;

import org.gvsig.installer.lib.api.execution.InstallPackageServiceException;

import org.gvsig.installer.lib.impl.DefaultInstallerManager;

import org.gvsig.installer.lib.spi.InstallPackageProviderServices;

import org.gvsig.installer.lib.spi.InstallerProviderLocator;

import org.gvsig.installer.lib.spi.InstallerProviderManager;

import org.gvsig.installer.lib.spi.execution.InstallPackageProvider;

import org.gvsig.tools.service.Manager;

import org.gvsig.tools.service.ServiceException;

/**

 * @author <a href="mailto:jpiera@gvsig.org">Jorge Piera Llodr&aacute;</a>

 */

public class DefaultInstallPackageService implements InstallPackageService {

    private static final Logger LOG = LoggerFactory

        .getLogger(DefaultInstallPackageService.class);

    private Map<PackageInfo, File> packageInfoFileMap = null;

    private Map<PackageInfo, String> zipEntriesMap = null;

    private List<PackageInfo> packageInfos = null;

    private InstallerManager manager;

    private InstallPackageProviderServices installerProviderServices = null;

    public DefaultInstallPackageService(DefaultInstallerManager manager) {

        super();

        this.manager = manager;

        packageInfoFileMap = new HashMap<PackageInfo, File>();

        packageInfos = new ArrayList<PackageInfo>();

        zipEntriesMap = new HashMap<PackageInfo, String>();

        installerProviderServices =

            InstallerProviderLocator.getProviderManager()

                .createInstallerProviderServices();

    }

    public void installPackage(File applicationDirectory,

        PackageInfo packageInfo) throws InstallPackageServiceException {

        if (!applicationDirectory.exists()) {

            throw new InstallPackageServiceException(

                "application_directory_not_found");

        }

        if (!packageInfoFileMap.containsKey(packageInfo)) {

            throw new InstallPackageServiceException("package_not_found");

        }

        InstallPackageProvider installerExecutionProvider =

            createProvider(packageInfo);

        // Get the package or package set file

        File file;

        if (packageInfo.getDownloadURL() == null) {

            file = packageInfoFileMap.get(packageInfo);

        } else {

            file = downloadFile(packageInfo.getDownloadURL(), null);

        }

        // Open and install the package or package set file

        try {

            InputStream packageStream;

            InputStream fis = new FileInputStream(file);

            InputStream bis = new BufferedInputStream(fis);

            if (isPackage(file)) {

                packageStream = bis;

            } else {

                if (!isPackageSet(file)) {

                    LOG.warn("Trying to install a package file ({0}) "

                        + "without a known file extension. Will try "

                        + "to install it as a package set", file);

                }

                packageStream =

                    installerProviderServices.searchPackage(bis,

                        zipEntriesMap.get(packageInfo));

            }

            installerExecutionProvider.install(applicationDirectory,

                packageStream);

            packageStream.close();

            if (bis != packageStream) {

                bis.close();

            }

            fis.close();

        } catch (FileNotFoundException e) {

            throw new InstallPackageServiceException("Package file not found: "

                + file);

        } catch (IOException e) {

            throw new InstallPackageServiceException(

                "IO error installing the package file: " + file, e);

        }

    }

    public void installPackage(File applicationDirectory, String packageCode)

        throws InstallPackageServiceException {

        PackageInfo packageInfo = getPackageInfo(packageCode);

        if (packageInfo == null) {

            throw new InstallPackageServiceException(

                "The package doesn't exist");

        }

        installPackage(applicationDirectory, packageInfo);

    }

    private InstallPackageProvider createProvider(PackageInfo packageInfo)

        throws InstallPackageServiceException {

        InstallerProviderManager installerProviderManager =

            (InstallerProviderManager) ((DefaultInstallerManager) manager)

                .getProviderManager();

        try {

            return installerProviderManager.createExecutionProvider(packageInfo

                .getType());

        } catch (ServiceException e) {

            throw new InstallPackageServiceException(

                "Error creating the provider", e);

        }

    }

    public PackageInfo getPackageInfo(int index) {

        if (index >= packageInfos.size()) {

            return null;

        }

        return packageInfos.get(index);

    }

    public PackageInfo getPackageInfo(String packageCode) {

        for (int i = 0; i < getPackageCount(); i++) {

            if (packageInfos.get(i).getCode().equals(packageCode)) {

                return packageInfos.get(i);

            }

        }

        return null;

    }

    public void addBundle(File bundle) throws InstallPackageServiceException {

        if (!bundle.exists()) {

            throw new InstallPackageServiceException(

                "Only an existing file is supported");

        }

        int packageInfoCount = packageInfos.size();

        FileInputStream fis;

        try {

            fis = new FileInputStream(bundle);

        } catch (FileNotFoundException e) {

            throw new InstallPackageServiceException("Package file not found: "

                + bundle, e);

        }

        BufferedInputStream bis = new BufferedInputStream(fis);

        if (isPackage(bundle)) {

            installerProviderServices.readPackageInfo(bis, packageInfos,

                zipEntriesMap, bundle.getName());

        } else {

            if (!isPackageSet(bundle)) {

                LOG.warn("Trying to add a package file ({0}) without a known "

                    + "file extension. Will try to add it as a package set",

                    bundle);

            }

            installerProviderServices.readPackageSetInfo(fis, packageInfos,

                zipEntriesMap);

        }

        try {

            bis.close();

            fis.close();

        } catch (IOException e) {

            LOG.warn("Error closing the input streams of the package file: "

                + bundle, e);

        }

        for (int i = packageInfoCount; i < packageInfos.size(); i++) {

            packageInfoFileMap.put(packageInfos.get(i), bundle);

        }

    }

    private boolean isPackageSet(File file) {

        return file.getName().endsWith(

            manager.getDefaultPackageSetFileExtension());

    }

    private boolean isPackage(File file) {

        return file.getName()

            .endsWith(manager.getDefaultPackageFileExtension());

    }

    public void addBundle(URL bundleURL) throws InstallPackageServiceException {

        File bundle = downloadFile(bundleURL, "packages.gvspki");

        addBundle(bundle);

    }

    private File downloadFile(URL bundleURL, String defaultFileName)

        throws InstallPackageServiceException {

        try {

            return InstallerProviderLocator.getProviderManager()

                .createInstallerProviderServices()

                .downloadFile(bundleURL, defaultFileName);

        } catch (IOException e) {

            throw new InstallPackageServiceException(

                "Bundle file download error from URL: " + bundleURL, e);

        }

    }

    public void addBundlesFromDirectory(File directory)

        throws InstallPackageServiceException {

        if (!directory.isDirectory()) {

            throw new InstallPackageServiceException(

                "The application directory has to be a directory");

        }

        File[] files = directory.listFiles(new FileFilter() {

            private String packageExt = manager

                .getDefaultPackageFileExtension();

            private String packageSetExt = manager

                .getDefaultPackageSetFileExtension();

            public boolean accept(File file) {

                String name = file.getName().toLowerCase();

                return name.endsWith(packageExt)

                    || name.endsWith(packageSetExt);

            }

        });

        for (int i = 0; i < files.length; i++) {

            if (files[i].isFile()) {

                addBundle(files[i]);

            }

        }

    }

    public int getPackageCount() {

        if (packageInfos == null) {

            return 0;

        }

        return packageInfos.size();

    }

    public Manager getManager() {

        return this.manager;

    }

}