fr.gael.dhus.server.http.web.WebApplication.java Source code

Introduction

Here is the source code for fr.gael.dhus.server.http.web.WebApplication.java

Source

/*
 * Data Hub Service (DHuS) - For Space data distribution.
 * Copyright (C) 2013,2014,2015 GAEL Systems
 *
 * This file is part of DHuS software sources.
 *
 * 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/>.
 */
package fr.gael.dhus.server.http.web;

import com.google.common.io.Files;
import fr.gael.dhus.server.http.TomcatServer;
import org.apache.commons.io.IOUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.InitializingBean;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.JarURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.JarEntry;

/**
 * Abstract class defining WebApplication and install all of them in Server.
 * Deprecated: use {@link fr.gael.dhus.server.http.WebApplication} instead. 
 * This abstract class shall be removed when GWT is removed from this project.
 */
@Deprecated
public abstract class WebApplication implements InitializingBean {
    private static Log logger = LogFactory.getLog(WebApplication.class);

    private static List<WebApplication> registeredClass = new ArrayList<>();

    /**
     * Name of this WebApplication. Empty for root.
     */
    protected String name;
    /**
     * Servlets defined by this WebApplication.
     */
    protected List<WebServlet> servlets;
    /**
     * Welcomes files of this WebApplication.
     */
    protected List<String> welcomeFiles;
    protected String allowIps;
    protected String denyIps;

    /**
     * Install all registered WebApplications in Server.
     * 
     * @param server
     */
    public static void installAll(TomcatServer server) {
        logger.info("Initializing webapps...");
        String excluded = System.getProperty("webapp.excluded");
        String[] s_excluded = null;
        if (excluded != null)
            s_excluded = excluded.split(" ");

        for (WebApplication webApp : registeredClass) {
            boolean run_app = true;
            try {
                if (s_excluded != null) {
                    for (String e : s_excluded) {
                        if (e.equals(webApp.getClass().getName()))
                            run_app = false;
                    }
                }
                if (run_app) {
                    logger.info(" + webapp : " + webApp.getClass().getName());
                    server.install(webApp);
                } else
                    logger.info(" - webapp : " + webApp.getClass().getName()
                            + " deactivated by user configuration (not started)");
            } catch (Exception e) {
                throw new UnsupportedOperationException("   Cannot launch " + webApp.getClass().getName(), e);
            }
        }
        logger.info("Webapps initialized.");
    }

    /**
     * Calling by Spring. Register and initialize current WebApplication at
     * start.
     */
    @Override
    public void afterPropertiesSet() throws Exception {
        registeredClass.add(this);
        init();
    }

    public String getName() {
        return name;
    }

    public List<WebServlet> getServlets() {
        return servlets;
    }

    public List<String> getWelcomeFiles() {
        return welcomeFiles;
    }

    public String getAllow() {
        return allowIps;
    }

    public String getDeny() {
        return denyIps;
    }

    /**
     * Calling to initialize every fields of this WebApplication.
     */
    protected abstract void init();

    /**
     * Get the WAR Stream.
     * 
     * @return WAR Stream
     */
    public InputStream getWarStream() {
        return null;
    }

    public boolean hasWarStream() {
        return true;
    }

    public void configure(String dest_folder) throws IOException {
    }

    /** Utils functions **/
    protected void copyFolder(File from, File to) throws IOException {
        to.mkdirs();
        for (File cfg : from.listFiles()) {
            if (cfg.isDirectory()) {
                copyFolder(cfg, new File(to, cfg.getName()));
            } else {
                Files.copy(cfg, new File(to, cfg.getName()));
            }
        }
    }

    protected void extractJarFolder(URL url, String configuration_folder, String dest_folder) throws IOException {
        final JarURLConnection connection = (JarURLConnection) url.openConnection();
        if (connection != null) {
            Enumeration<JarEntry> entries = connection.getJarFile().entries();
            while (entries.hasMoreElements()) {
                JarEntry entry = (JarEntry) entries.nextElement();
                if (!entry.isDirectory() && entry.getName().startsWith(configuration_folder)) {
                    InputStream in = connection.getJarFile().getInputStream(entry);
                    try {
                        File file = new File(dest_folder, entry.getName().substring(configuration_folder.length()));
                        if (!file.getParentFile().exists()) {
                            file.getParentFile().mkdirs();
                        }
                        OutputStream out = new FileOutputStream(file);
                        try {
                            IOUtils.copy(in, out);
                        } finally {
                            out.close();
                        }
                    } finally {
                        in.close();
                    }
                }
            }
        }
    }
}