applicationstate.java

电子地图服务器,搭建自己的地图服务

/* Copyright (c) 2001 - 2007 TOPP - www.openplans.org.  All rights reserved.
 * This code is licensed under the GPL 2.0 license, availible at the root
 * application directory.
 */
package org.vfny.geoserver.global;

import org.apache.struts.action.ActionServlet;
import org.apache.struts.action.PlugIn;
import org.apache.struts.config.ModuleConfig;
import org.geotools.validation.dto.PlugInDTO;
import org.geotools.validation.dto.TestDTO;
import org.geotools.validation.dto.TestSuiteDTO;
import org.springframework.beans.factory.InitializingBean;
import org.vfny.geoserver.global.xml.XMLConfigWriter.WriterUtils;
import java.io.File;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;


/**
 * This class represents the state of the GeoServer appliaction.
 *
 * <p>
 * ApplicationState used by the state.jsp tile as a single view on the state of
 * the GeoServer application. This class may be extended in the future to
 * provide runtime statistics.
 * </p>
 *
 * <p>
 * This class is not a bean - content is updated based on methods. As an
 * example consider the following State diagram:
 * </p>
 *
 * @author dzwiers, Refractions Research, Inc.
 * @version $Id: ApplicationState.java 7579 2007-10-09 22:30:14Z jdeolive $
 */
public class ApplicationState implements PlugIn, InitializingBean {
    /** The key used to store this value in the Web Container */
    public static final String WEB_CONTAINER_KEY = "GeoServer.ApplicationState";

    /** Non null if configuration has been edited (but not applied) */
    private Date configTimestamp;

    /** Non null if the geoserver setup has been changed (but not saved) */
    private Date appTimestamp;

    /** Non null if the modification date of the xml files is known */
    private Date xmlTimestamp;

    /** magic, be very careful with this array. defined below in loadStatus() */
    private int[] geoserverStatus = new int[13];
    private Map geoserverNSErrors;
    private Map geoserverDSErrors;
    private Map geoserverVPErrors;

    /**
     * Data module
     */
    Data data;

    /**
     * Validation module
     */
    GeoValidator validator;

    /**
     * Configuration module
     */
    Config config;

    /**
     *
     * @deprecated use {@link #ApplicationState(Data, GeoValidator, Config)}
     */
    public ApplicationState() {
        this(null, null, null);
    }

    /**
     * Creates a new appliction state.
     *
     * @param data The data modle.
     * @param validator The validation module
     */
    public ApplicationState(Data data, GeoValidator validator, Config config) {
        this.data = data;
        this.validator = validator;
        this.config = config;
    }

    /**
     * Clean up the Configuration State during application exit.
     *
     * <p>
     * Since this class just holds data, no resources need to be released.
     * </p>
     *
     * @see org.apache.struts.action.PlugIn#destroy()
     */
    public void destroy() {
    }

    /**
     * Set up the ApplicationState during Application start up.
     *
     * <p>
     * ApplicationState simply registers itself with the WEB_CONTAINER_KEY
     * ("GeoServer.ApplicationState") during start up.
     * </p>
     *
     * @param actionServlet ActionServlet representing the Application
     * @param moduleConfig Configuration used to set up this plug in
     *
     * @throws ServletException
     *
     * @see org.apache.struts.action.PlugIn#init(org.apache.struts.action.ActionServlet,
     *      org.apache.struts.config.ModuleConfig)
     *
     * @deprecated This class is no longer loaded with struts,
     *  use {@link #afterPropertiesSet()}
     */
    public void init(ActionServlet actionServlet, ModuleConfig moduleConfig)
        throws ServletException {
        try {
            afterPropertiesSet();
        } catch (Exception e) {
            throw new ServletException(e);
        }
    }

    public void afterPropertiesSet() throws Exception {
        configTimestamp = getXmlTimestamp();
        appTimestamp = configTimestamp;

        geoserverStatus[0] = -1;
    }

    /**
     * True if the user has changed the Configuration and not yet applied them.
     *
     * @return <code>true</code> if Configuration needs changing.
     */
    public boolean isConfigChanged() {
        return (configTimestamp != null)
        && ((appTimestamp == null) || configTimestamp.after(appTimestamp));
    }

    /** Validation is part of the Configuration Process */
    private boolean isValidationChanged() {
        return isConfigChanged();
    }

    /**
     * True if the user has changed GeoServer and not yet saved the changes.
     *
     * @return <code>true</code> if GeoServer has been changed (but not saved)
     */
    public boolean isAppChanged() {
        return (appTimestamp != null) && appTimestamp.after(getXmlTimestamp());
    }

    /**
     * Notification that Config has been updated from XML config files
     */
    public void notifyLoadXML() {
        // Correct, this represents a load into config from xml
        appTimestamp = xmlTimestamp;
        configTimestamp = xmlTimestamp;
    }

    /**
     * Notification that Global has been updated from Configuration
     */
    public void notifyToGeoServer() {
        appTimestamp = new Date();
    }

    /**
     * Notification that Global has been saved to XML config files.
     */
    public void notifiySaveXML() {
        xmlTimestamp = new Date();
    }

    /**
     * Notification that the User has changed the Configuration
     */
    public void notifyConfigChanged() {
        configTimestamp = new Date();
    }

    /**
     * signal to any listeners that config has changed.
     */
    public void fireChange() {
        data.getGeoServer().fireChange();
    }
    
    /** Q: what is this supposed to do? */
    public int getWcsGood() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return geoserverStatus[4];
    }

    /** q: What foul manner of magic is this? */
    public int getWcsBad() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return geoserverStatus[5];
    }

    /** q: This does not make a lot of sense - did you want to consult both ConfigChanged and GeoServer changed? */
    public int getWcsDisabled() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return geoserverStatus[6];
    }

    /** Q: what is this supposed to do? */
    public int getWfsGood() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return geoserverStatus[1];
    }

    /** q: What foul manner of magic is this? */
    public int getWfsBad() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return geoserverStatus[2];
    }

    /** q: This does not make a lot of sense - did you want to consult both ConfigChanged and GeoServer changed? */
    public int getWfsDisabled() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return geoserverStatus[3];
    }

    /** Q: scary magic */
    public int getWmsGood() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return geoserverStatus[4];
    }

    /** Q: scary magic */
    public int getWmsBad() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return geoserverStatus[5];
    }

    /** Q: scary magic */
    public int getWmsDisabled() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return geoserverStatus[6];
    }

    public int getDataGood() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return geoserverStatus[7];
    }

    public int getDataBad() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return geoserverStatus[8];
    }

    public int getDataDisabled() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return geoserverStatus[9];
    }

    public int getGeoserverGood() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return (int) ((geoserverStatus[1] + geoserverStatus[4] + geoserverStatus[7]) / 3.0);
    }

    public int getGeoserverBad() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return (int) ((geoserverStatus[2] + geoserverStatus[5] + geoserverStatus[8]) / 3.0);
    }

    public int getGeoserverDisabled() {
        if (geoserverStatus[0] != ((isAppChanged() ? 1 : 0) + (isConfigChanged() ? 2 : 0)
                + (isValidationChanged() ? 4 : 0))) {
            loadStatus();
        }

        return (int) ((geoserverStatus[3] + geoserverStatus[6] + geoserverStatus[9]) / 3.0);
    }

    /**
     *
     * loadStatus purpose.
     * <p>
     * Magic occurs here, so be careful. This sets the values in the geoserverStatus array.
     * </p>
     * <p>
     * The array is broken into four blocks, [0],[1-3],[4-6],[7-9].