net.happyonroad.component.container.support.LauncherThroughPort Maven / Gradle / Ivy

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The spring component framework is used to setup a plugin based, micro-kernel, standalone application (today, we will support webapp in later releases) which is based on SpringFramework. It can help you decouple your application into several components clearly with zero invasion and keep your application consistent between develop time and runtime.

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/**
 * @author XiongJie, Date: 13-11-4
 */
package net.happyonroad.component.container.support;

import net.happyonroad.component.container.Executable;
import org.springframework.remoting.rmi.RmiProxyFactoryBean;

/** 通过一个本地通讯机制，让某个已经存在的进程(AppLauncher)执行相应的命令 */
public class LauncherThroughPort implements Executable {
    private final String      host;
    private final int         port;
    private       Executable remote;

    public LauncherThroughPort(int port) {
        this("localhost", port);
    }

    public LauncherThroughPort(String host, int port) {
        this.host = host;
        this.port = port;
        RmiProxyFactoryBean factoryBean = new RmiProxyFactoryBean();
        factoryBean.setServiceInterface(Executable.class);
        String serviceUrl = String.format("rmi://%s:%d/%sLauncher",
                                          this.host, this.port, System.getProperty("app.name"));
        factoryBean.setServiceUrl(serviceUrl);
        try {
            factoryBean.afterPropertiesSet();
        } catch (Exception e) {
            throw new IllegalArgumentException("Can't lookup Executable Service at: " + serviceUrl);
        }
        remote = (Executable) factoryBean.getObject();
    }

    @Override
    public void start() throws Exception {
        remote.start();
    }

    @Override
    public void exit() {
        try {
            remote.exit();
        } catch (Exception e) {
            System.out.println("Can't exit remote program, because of:" + e.getMessage());
        }
    }

    @Override
    public void reload() {
        remote.reload();
    }

    @Override
    public String toString() {
        return "AppLauncher{" + host + ":" + port + '}';
    }
}