org.tinygroup.cache.jcs.applicationprocessor.JcsCacheProcessor.java Source code

Introduction

Here is the source code for org.tinygroup.cache.jcs.applicationprocessor.JcsCacheProcessor.java

Source

/**
 *  Copyright (c) 1997-2013, www.tinygroup.org (luo_guo@icloud.com).
 *
 *  Licensed under the GPL, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.gnu.org/licenses/gpl.html
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.tinygroup.cache.jcs.applicationprocessor;

import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.util.Properties;

import org.apache.commons.jcs.auxiliary.remote.server.RemoteCacheServerFactory;
import org.apache.commons.jcs.engine.control.CompositeCacheManager;
import org.apache.commons.jcs.utils.props.PropertyLoader;
import org.tinygroup.application.Application;
import org.tinygroup.application.ApplicationProcessor;
import org.tinygroup.commons.tools.StringUtil;
import org.tinygroup.config.impl.AbstractConfiguration;
import org.tinygroup.config.util.ConfigurationUtil;
import org.tinygroup.logger.LogLevel;
import org.tinygroup.xmlparser.node.XmlNode;

public class JcsCacheProcessor extends AbstractConfiguration implements ApplicationProcessor {

    private static final String JCS_CONFIG_PATH = "/application/jcs-config";
    private static final int DEFAULT_REGISTRY_PORT = 1101;
    private static final String DEFAULT_PROPS_FILE_NAME = "cache.ccf";
    private boolean enable = false;

    public void start() {
        XmlNode combineNode = ConfigurationUtil.combineXmlNode(applicationConfig, componentConfig);
        if (combineNode != null) {
            String enableString = combineNode.getAttribute("enable");
            if (!StringUtil.isBlank(enableString)) {
                enable = Boolean.valueOf(enableString);
            }
        }
        if (enable) {
            LOGGER.logMessage(LogLevel.INFO, "jcscacheplugin is starting...");
            startCluster();
            LOGGER.logMessage(LogLevel.INFO, "jcscacheplugin is started");
        }
    }

    private void startCluster() {
        int registryPort = DEFAULT_REGISTRY_PORT;
        try {
            Properties props = PropertyLoader.loadProperties(DEFAULT_PROPS_FILE_NAME);
            if (props != null) {
                String portS = props.getProperty("registry.port", String.valueOf(DEFAULT_REGISTRY_PORT));

                try {
                    registryPort = Integer.parseInt(portS);
                } catch (NumberFormatException e) {
                    LOGGER.errorMessage("Problem converting port to an int.", e);
                }
            }
        } catch (Exception e) {
            LOGGER.errorMessage("Problem loading props.", e);
        }

        // we will always use the local machine for the registry
        String registryHost;
        try {
            registryHost = InetAddress.getLocalHost().getHostAddress();
            LOGGER.logMessage(LogLevel.DEBUG, "registryHost =[{}]", registryHost);

            if ("localhost".equals(registryHost) || "127.0.0.1".equals(registryHost)) {
                LOGGER.logMessage(LogLevel.WARN,
                        "The local address [{}] is INVALID.  Other machines must be able to use the address to reach this server.",
                        registryHost);
            }

            try {
                LocateRegistry.createRegistry(registryPort);
            } catch (RemoteException e) {
                LOGGER.errorMessage("Problem creating registry.  It may already be started. {}", e, e.getMessage());
            } catch (Exception t) {
                LOGGER.errorMessage("Problem creating registry.", t);
            }

            try {
                RemoteCacheServerFactory.startup(registryHost, registryPort, "/" + DEFAULT_PROPS_FILE_NAME);
            } catch (IOException e) {
                LOGGER.errorMessage("Problem starting remote cache server.", e);
            }

            catch (Exception t) {
                LOGGER.errorMessage("Problem starting remote cache server.", t);
            }
        } catch (UnknownHostException e) {
            LOGGER.errorMessage("Could not get local address to use for the registry!", e);
        }
    }

    public void stop() {
        if (enable) {
            LOGGER.logMessage(LogLevel.INFO, "Shutting down remote cache ");
            CompositeCacheManager.getInstance().shutDown();
            LOGGER.logMessage(LogLevel.INFO, "jcscacheplugin is stopped");
        }
    }

    public String getApplicationNodePath() {
        return JCS_CONFIG_PATH;
    }

    public String getComponentConfigPath() {
        return "/jcscache.config.xml";
    }

    public void setApplication(Application application) {

    }

    public int getOrder() {
        return DEFAULT_PRECEDENCE;
    }

    public void init() {
        // TODO Auto-generated method stub

    }
}