com.github.javaclub.sword.App Maven / Gradle / Ivy

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Javaclub sword
The newest version!
package com.github.javaclub.sword;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

import org.springframework.util.FileCopyUtils;

import com.github.javaclub.sword.core.Numbers;
import com.github.javaclub.sword.core.Strings;
import com.github.javaclub.sword.util.FileUtil;

/**
 * App
 *
 * @author Gerald Chen
 * @version $Id: App.java 2017年5月15日 19:00:11 Exp $
 */
public final class App {
	
	static final String groupId = "com.github.javaclub";
	static final String artifactId= "sword";
	
	public static Thread currentThread() {
		return Thread.currentThread();
	}
	
	public static void sleep(long min, long max) {
		try {
			Thread.sleep(Numbers.random(min, max));
		} catch (InterruptedException e) {
			// ignore;
		}
	}
	
	public static void sleep(long mills) {
		try {
			Thread.sleep(mills);
		} catch (InterruptedException e) {
			// ignore;
		}
	}
	
	public static void sleep(long baseMills, long intervalPerTimes, int tryTimes) {
		long min = baseMills;
		try {
			min = baseMills + intervalPerTimes*tryTimes;
			min = min > (Long.MAX_VALUE - 100000L) ? (Long.MAX_VALUE - 100000L) : min;
		} catch (Exception ex) {
			min = Long.MAX_VALUE - 200000L;
		}
		long max = min + 60*1000L;
		try {
			Thread.sleep(Numbers.random(min, max));
		} catch (InterruptedException e) {
			// ignore;
		}
	}
	
	public static String getCurrentJarVersion() {
		Properties pom =  null;
		try {
			pom = getJarProperties(groupId, artifactId);
		} catch (IOException e) {
		}
		
		return null == pom ? null : pom.getProperty("version");
	}
	
	
	public static Properties getJarProperties(String groupId, String artifactId) throws IOException {
		
		Properties packageProperties = new Properties();
		
		String mainfestFile = "META-INF/MANIFEST.MF";
		String mavenPomFile = Strings.format("META-INF/maven/{}/{}/pom.properties", groupId, artifactId);

		InputStream pomResource = FileUtil.getClasspathStream(mavenPomFile);
	    if (null != pomResource) {
	      // #Generated by Maven
	      // #Wed Jul 22 13:09:50 CST 2015
	      // version=1.0.5-SNAPSHOT
	      // groupId=com.github.javaclub
	      // artifactId=sword

	      byte[] pomData = FileCopyUtils.copyToByteArray(pomResource);
	      packageProperties.load(new ByteArrayInputStream(pomData));

	      BufferedReader br = new BufferedReader(new StringReader(new String(pomData, "utf-8")));
	      List lines = new ArrayList();
	      for (String line = br.readLine(); line != null; line = br.readLine()) {
	        lines.add(line);
	      }
	      // try to get package time
	      if (lines.size() >= 2 && lines.get(1).startsWith("#")) {
	        String time = lines.get(1).substring(1);
	        packageProperties.put("packageTime", time);
	      }
	    }
	    
	    // Manifest-Version: 1.0
	    // Archiver-Version: Plexus Archiver
	    // Built-By: hongyuanabc
	    // Created-By: Apache Maven 3.3.1
	    // Build-Jdk: 1.8.0_45
	    InputStream mainfestResource = FileUtil.getClasspathStream(mainfestFile);
	    if (null != mainfestResource) {
	      byte[] mainfestData = FileCopyUtils.copyToByteArray(mainfestResource);
	      BufferedReader br = new BufferedReader(new StringReader(new String(mainfestData)));
	      for (String line = br.readLine(); line != null; line = br.readLine()) {
	        String[] split = Strings.split(line, ':');
	        if (split != null && split.length == 2) {
	          packageProperties.put(split[0].trim(), split[1].trim());
	        }
	      }
	    }
	    
	    return packageProperties;
	}
	
    public static void main( String[] args ) throws IOException {
        System.out.println(getCurrentJarVersion());
        System.out.println(getJarProperties("com.github.javaclub", "configcenter-client"));
    }
}