Maven Release

Getting started with Maven Release

Links

Login to your sonatype account to release the version

Type	URL	Description
Snapshot	sonatype	Snapshot versions
Release	sonatype	Release versions
Release	central-sonatype	Release versions

Documentation

• Well explained blog of How to Publish Artifacts to Maven Central
• Your Sonatype account link
• Your Jira ticket login link
• Github action to import gpg:
  • link1
  • link2
  • link3

Secrets

• MAVEN_GPG_PRIVATE_KEY - Take it from the private.gpg
• OSSRH_USERNAME - Created here
• OSSRH_TOKEN - Created here
• MAVEN_GPG_PASSPHRASE - Create here
  • This passphrase and your private key are all that is needed to sign artifacts with your signature.
• TOKEN - Github token

Demo

How do you release a version?

Manually:
   1. Check the version in the pom.xml
      * 0.2.26-SNAPSHOT
   2. Go to Github action -> Run workflow
      * Release: 0.2.26
      * Snapshot: 0.2.27-SNAPSHOT

Automatically:
Push to Github will create a release and a snapshot but it won't publish the release.
Snapshot will be available through here

<dependency>
    <groupId>io.github.naturalett</groupId>
    <artifactId>my-app</artifactId>
    <version>1.0.3</version>
</dependency>

Maven in 5 Minutes

Follow after the documentation here to start your first maven.

Expend your ./src/main/java/com/mycompany/app/App.java with:

package com.mycompany.app;

import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;

import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;

public class App 
{
    public static void main( String[] args ) throws IOException {

        HttpServer server = HttpServer.create(new InetSocketAddress(8080), 0);
        server.createContext("/", new MyHandler());
        server.setExecutor(null); // creates a default executor
        server.start();

    }

    static class MyHandler implements HttpHandler {
        @Override
        public void handle(HttpExchange t) throws IOException {
            String response = "<h1> Hello World! </h1>";
            t.sendResponseHeaders(200, response.length());
            OutputStream os = t.getResponseBody();
            os.write(response.getBytes());
            os.close();
        }
    }
}

GPG

After generating gpg key following by here

gpg --gen-key

You can list the local key that you created:

gpg --list-secret-keys --keyid-format=long

Then you can export the private key to your local machine in order to upload it later to Github secret:

gpg --armor --export-secret-keys <YOUR_KEY> > private.gpg

• YOUR_KEY='long number'...B720

Local commands

Release + Snapshot:

mvn --batch-mode release:clean release:prepare release:perform -Dusername=naturalett -Dpassword=<GITHUB_TOKEN> -s settings.xml -X

Bump version:

mvn --batch-mode build-helper:parse-version versions:set -DnewVersion=0.2.0-SNAPSHOT versions:commit -Dusername=naturalett -Dpassword=<GITHUB_TOKEN> -s settings.xml -X

GPG to sign:

mvn -X -B clean javadoc:jar source:jar deploy -Dgpg.passphrase="<PASSPHRASE_GPG>" -Pci-cd -s settings.xml

Authors

• @naturalett