Implementation:Apache Kafka Gradle Maven Publish

Knowledge Sources	Apache Kafka
Domains	Release_Engineering, Build_Systems
Last Updated	2026-02-09 12:00 GMT

Overview

Concrete tool for publishing JAR artifacts to Apache Maven staging via Gradle provided by the Kafka release orchestration.

Description

The Maven publish step is orchestrated through the runtime.cmd function which executes Gradle's publish task. The Gradle build is configured with signing credentials and the Apache Maven staging repository URL. The release.py script coordinates this step as part of the overall release workflow.

Usage

This step is invoked automatically as part of the release stage command. It requires Gradle build configuration with Maven publishing and signing plugins, plus valid Apache repository credentials.

Code Reference

Source Location

Repository: Apache Kafka
File: release/release.py (L280-320), release/runtime.py (L109-146)

Signature

# Invoked via runtime.cmd:
cmd("Publishing Maven artifacts...",
    "gradlew publish -PmavenUrl=https://repository.apache.org/service/local/staging/deploy/maven2 ...")

def cmd(action, cmd_arg, *args, **kwargs):
    """
    Execute an external command with retry on failure.
    Returns True on success, False if allow_failure=True and command failed.
    """

Import

from runtime import cmd

I/O Contract

Inputs

Name	Type	Required	Description
action	str	Yes	Description of the publish action
cmd_arg	str	Yes	Gradle publish command with signing config
Maven credentials	env	Yes	Repository username/password
GPG credentials	env	Yes	Signing key and passphrase

Outputs

Name	Type	Description
cmd returns	bool	True if publish succeeded
Maven artifacts	remote	JARs published to repository.apache.org staging

Usage Examples

Publish to Maven Staging

from runtime import cmd

cmd("Publishing Maven artifacts to staging repository",
    "./gradlew publish "
    "-PmavenUrl=https://repository.apache.org/service/local/staging/deploy/maven2 "
    "-PmavenUsername=$MAVEN_USER "
    "-PmavenPassword=$MAVEN_PASS")

Related Pages

Implements Principle

Page Connections

Double-click a node to navigate. Hold to expand connections.

Principle

Implementation

Heuristic

Environment