com.infusers.core.version.java.InfusersJavaVersionDetails Maven / Gradle / Ivy

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Infusers api core

There is a newer version: 2024.12.0008

package com.infusers.core.version.java;

import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import org.springframework.beans.factory.annotation.Autowired;

import com.infusers.core.audit.AuditService;

public class InfusersJavaVersionDetails {
	
	private InfusersJavaVersionDetails() {}
	
	private static InfusersJavaVersionDetails instance;
	
	public static InfusersJavaVersionDetails getInstance() {
		if(instance==null) {
			instance = new InfusersJavaVersionDetails();
		}
		return instance;
	}
		
	private static final String CLASS_NAME = "InfusersJavaVersionDetails";

	@Autowired(required = true)
	private AuditService auditService;
	
	final Logger log = LogManager.getLogger(InfusersJavaVersionDetails.class);
	
	public String getJavaVersion() {
		String javaVersion = System.getProperty("java.version");
		String javaVersionLatest = getLatestJavaVersion();
		
		if(javaVersion!=null && javaVersion.trim().equalsIgnoreCase(javaVersionLatest)) {		
			return javaVersion;			
		}
		else {
			return javaVersion+", Upgrade option: "+javaVersionLatest;
		}
	}
    
    public String getLatestJavaVersion()  {
    	
        String latestVersion = "";
        
        try {
            String url = "https://www.oracle.com/java/technologies/downloads/";
            Document doc = Jsoup.connect(url).get();
            Elements downloadLinks = doc.select("[href*='jdk'][href*='linux-aarch64_bin.tar.gz']");
            Element latestLink = downloadLinks.first();
            if(latestLink!=null) {
            	String archiveName = latestLink.attr("href");            	
            	//System.out.println("latestLink = "+latestLink+" :: archiveName = "+archiveName);
            	
                Path archivePath = Paths.get(archiveName);
                String regex = "^([^-]+-[^-]+)_.*\\.tar\\.gz$";

                Pattern pattern = Pattern.compile(regex);
                Matcher matcher = pattern.matcher(archivePath.getFileName().toString());
                if (matcher.matches()) {
                	latestVersion = matcher.group(1);
                }
            }
        }
        catch (Exception e) {
        	//e.printStackTrace();
	    	return "Some issue, found excpetion";
        }
        //System.out.println("Latest version of Java SE: " + latestVersion);
        return latestVersion;
    }
    
//  public static void main(String[] args) throws IOException {
//	getLatestJavaVersion();
//}    
}