net.geoprism.context.ServerInitializer.java Source code

Introduction

Here is the source code for net.geoprism.context.ServerInitializer.java

Source

/**
 * Copyright (c) 2015 TerraFrame, Inc. All rights reserved.
 *
 * This file is part of Runway SDK(tm).
 *
 * Runway SDK(tm) is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * Runway SDK(tm) 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with Runway SDK(tm).  If not, see <http://www.gnu.org/licenses/>.
 */
package net.geoprism.context;

import java.util.Collections;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.runwaysdk.dataaccess.ProgrammingErrorException;
import com.runwaysdk.generation.loader.LoaderDecorator;
import com.runwaysdk.generation.loader.Reloadable;
import com.runwaysdk.session.Request;

public class ServerInitializer implements Reloadable {

    private static final Log log = LogFactory.getLog(ServerInitializer.class);

    public static void initialize() {
        ServerContextListenerDocumentBuilder builder = new ServerContextListenerDocumentBuilder();
        List<ServerContextListenerInfo> infos = builder.read();

        initialize(infos);
        startup(infos);
    }

    private static void initialize(List<ServerContextListenerInfo> infos) {
        for (ServerContextListenerInfo info : infos) {
            try {

                Class<?> clazz = LoaderDecorator.load(info.getClassName());
                Object newInstance = clazz.newInstance();

                ServerContextListener listener = (ServerContextListener) newInstance;
                listener.initialize();

                log.debug("Initialized: " + info.getClassName() + ".setup();");
            } catch (Exception e) {
                log.error(e);

                throw new ProgrammingErrorException(
                        "Unable to startup the server context listener [" + info.getClassName() + "]", e);
            }
        }
    }

    @Request
    private static void startup(List<ServerContextListenerInfo> infos) {
        for (ServerContextListenerInfo info : infos) {
            try {

                Class<?> clazz = LoaderDecorator.load(info.getClassName());
                Object newInstance = clazz.newInstance();

                try {
                    ServerContextListener listener = (ServerContextListener) newInstance;
                    listener.startup();
                } catch (ClassCastException e) {
                    log.error("ClassCastException initializer", e);

                    Class<? extends Object> class1 = newInstance.getClass();
                    ClassLoader loader1 = class1.getClassLoader();

                    log.debug("New instance class : " + class1.hashCode());
                    log.debug("New instance class loader: " + loader1.hashCode());

                    Class<? extends Object> class2 = ServerContextListener.class;
                    ClassLoader loader2 = class2.getClassLoader();

                    log.debug("Interface class : " + class2.hashCode());
                    log.debug("New instance class loader: " + loader2.hashCode());

                    clazz.getMethod("startup").invoke(newInstance);
                }

                log.debug("COMLPETE: " + info.getClassName() + ".setup();");
            } catch (Exception e) {
                log.error(e);

                throw new ProgrammingErrorException(
                        "Unable to startup the server context listener [" + info.getClassName() + "]", e);
            }
        }
    }

    @Request
    public static void destroy() {
        ServerContextListenerDocumentBuilder builder = new ServerContextListenerDocumentBuilder();
        List<ServerContextListenerInfo> infos = builder.read();

        Collections.reverse(infos);

        for (ServerContextListenerInfo info : infos) {
            try {

                Class<?> clazz = LoaderDecorator.load(info.getClassName());
                Object newInstance = clazz.newInstance();

                try {
                    ServerContextListener listener = (ServerContextListener) newInstance;
                    listener.shutdown();
                } catch (ClassCastException e) {
                    log.error("ClassCastException in ServerInitializer.shutdown", e);

                    Class<? extends Object> class1 = newInstance.getClass();
                    ClassLoader loader1 = class1.getClassLoader();

                    log.debug("New instance class : " + class1.hashCode());
                    log.debug("New instance class loader: " + loader1.hashCode());

                    Class<? extends Object> class2 = ServerContextListener.class;
                    ClassLoader loader2 = class2.getClassLoader();

                    log.debug("Interface class : " + class2.hashCode());
                    log.debug("New instance class loader: " + loader2.hashCode());

                    clazz.getMethod("shutdown").invoke(newInstance);
                }

                log.debug("COMLPETE: " + info.getClassName() + ".shutdown();");
            } catch (Exception e) {
                log.error(e);

                throw new ProgrammingErrorException(
                        "Unable to shutdown the server context listener [" + info.getClassName() + "]", e);
            }
        }
    }
}