com.paxxis.cornerstone.service.spring.CornerstoneService.java Source code

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Here is the source code for com.paxxis.cornerstone.service.spring.CornerstoneService.java

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/*
 * Copyright 2010 the original author or authors.
 * Copyright 2009 Paxxis Technology LLC
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * 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 com.paxxis.cornerstone.service.spring;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Date;
import java.util.UUID;

import org.apache.log4j.Logger;
import org.springframework.context.support.FileSystemXmlApplicationContext;

import com.paxxis.cornerstone.base.InstanceId;
import com.paxxis.cornerstone.base.monitoring.ServiceInstance;
import com.paxxis.cornerstone.common.CornerstoneConfigurable;
import com.paxxis.cornerstone.service.ICornerstoneService;
import com.paxxis.cornerstone.service.ServiceVersion;
import com.paxxis.cornerstone.service.UnknownVersion;

/**
 *
 * @author Robert Englander
 */
public class CornerstoneService extends CornerstoneConfigurable implements ICornerstoneService {
    private static final Logger _logger = Logger.getLogger(CornerstoneService.class);

    /** the service instance */
    private ServiceInstance serviceInstance = new ServiceInstance();

    // the version instance
    private ServiceVersion _version = new UnknownVersion();

    /**
     * The main
     *
     * @param args the command line arguments.  There should be only
     * 1 command line argument -- the spring factory xml file.
     */
    public static void main(String[] args) {
        // all we do is load the container
        FileSystemXmlApplicationContext ctx = new FileSystemXmlApplicationContext(args[0]);
        ctx.registerShutdownHook();
    }

    /**
     * Initializes the main service object.
     */
    public void initialize() {
        super.initialize();

        // we must have a display name
        if (serviceInstance.getDisplayName() == null) {
            throw new RuntimeException("displayName cannot be null.");
        }

        try {
            serviceInstance.setHostName(InetAddress.getLocalHost().getCanonicalHostName());
        } catch (UnknownHostException e) {
            serviceInstance.setHostName("UNKNOWN");
        }

        serviceInstance.setInstanceId(InstanceId.create(UUID.randomUUID().toString()));
        serviceInstance.setStartTime(new Date());

        _logger.info("Initializing " + toString());

    }

    @Override
    public String toString() {
        String text = serviceInstance.getDisplayName() + " Service ID: " + serviceInstance.getServiceId()
                + " Instance ID: " + serviceInstance.getInstanceId() + " Cluster: "
                + serviceInstance.getClusterName();

        return text;
    }

    /**
     * Tear down the service.
     */
    public void destroy() {
    }

    public void setStartTimeUTC(boolean val) {
        serviceInstance.setStartTimeUTC(val);
    }

    /**
     * Set the display name for the service
     *
     * @param name the service display name
     */
    public void setDisplayName(String name) {
        serviceInstance.setDisplayName(name);
    }

    /**
     * Set the version of the service.
     *
     * @param version the version.
     */
    public void setServiceVersion(ServiceVersion version) {
        _version = version;
    }

    public void setServiceId(String id) {
        serviceInstance.setServiceId(InstanceId.create(id));
    }

    public ServiceInstance getServiceInstance() {
        return serviceInstance;
    }

    public void setClusterName(String name) {
        serviceInstance.setClusterName(name);
    }

    /**
     * Determine if the service can shut down.
     */
    public boolean canShutdown() {
        return true;
    }

    /**
     * Shut down the service.
     *
     */
    public void shutdown() {
        if (canShutdown()) {
            System.exit(0);
        }
    }

    public String getVersion() {
        if (_version == null) {
            return "Unknown";
        }

        return _version.getVersionDescriptor();
    }

    /** 
     * Constructor
     */
    public CornerstoneService() {
    }

}