Publishing artifacts to Maven Central with Bintray & Gradle

Recently I joined a conversation on Twitter where the OP complained to spending hours to get a brand new computer setup to publish artifacts to Maven Central. The issue stemmed from having PGP signature files moved from one location to another. There are other issues that may arise when uploading artifacts to Maven Central, specially when doing it for the first time. The rules for publishing artifacts are stated here. A common mistake is to omit one of the required POM elements, which will likely trigger a series of back-and-forth revisions until you get it right. This can be frustrating Read More


Does Gradle need build profile support?

The need for customizing a build based on a particular environment is a prevalent one. Maven offers an option called build profiles which lets you customize certain aspects of the build but not all. However on the Gradle side of things, there’s no such feature found in core, with the argument being that contrasted to what Maven offers as means for defining build files (a limited XML based DSL), Gradle offers not one but two DSLs based on full programming languages. This allows developers use the same control flows they’re used to in production and test code but on build Read More


Announcing the PomChecker project

I’m happy to announce the immediate availability of the PomChecker suite! What is it you ask? It’s a small set of utilities to verify that a POM or BOM file complies with the minimum requirements for being uploaded to Maven Central. I wish an utility like this existed years ago when I started publishing artifacts to Maven Central. It took me a few tries in the beginning to get the POM files just right. Recently I’ve seen other developers struggling with these rules as well. Hopefully these utilities can help them and others get on the road much faster. There Read More


Detecting duplicate dependencies in Maven

In late March 2020 I ran a quiz on Maven Dependency Resolution which turned out to be an eye opener for some people (including myself!). You can read the whole questionnaire, results, and analysis here. One of the surprising results was found in the very first question, a rather innocuous one but it resulted in a major stumbling block for 2/3 of respondents! Here’s the question What’s surprising is that only 36% people chose the correct answer and a similar percentage chose the “Build error” option because clearly duplicate dependencies ought to cause a build error, right? Wrong! Maven does Read More


Announcing the Gradle Enforcer Plugin

Inspired by the popular Maven Enforcer plugin I’m happy to announce that its Gradle counterpart has been released, say hello to the enforcer-gradle-plugin! The behavior provided by Gradle Enforcer plugin is very similar to what the Maven Enforcer plugin provides, in the sense that rules will be executed during a particular phase of the build; any rule violations result in a build failure. Rules are typically setup to check for preconditions and requirements. The Maven Enforcer plugin provides a set of core rules and extra rules. In turn, the Gradle Enforcer plugin provides a similar set plus a few rules Read More


Configuring the OCI Gradle Build Cache plugin with GitHub Actions

Following up on the previous post that explains how to setup the OCI Gradle Build Cache plugin on Travis-CI today I’d like to show how to do the same with GitHub Actions. The steps to follow are quite similar; if you do not already have an OCI account and/or a configured compartment then please follow steps 1, 2, and 3 as explained in this post, then proceed with the next steps Step 4: Apply the plugin to your project Paste the following into your settings.gradle file Notice that the location of the config file is local to the project. There’s Read More


Configuring the OCI Gradle Build Cache plugin with Travis-ci

The following post describes how to configure the oci-gradle-build-cache plugin to write to the cache when running on Travis-ci. I’m assuming dear reader that you have an Oracle Cloud account ready, but if that were not to be the case then you can sign up for an Always Free tier account at https://www.oracle.com/cloud/free/. Let’s get started! Step 1: Create a config file There are a couple of ways to configure the plugin, we’ll use a configuration file whose format is specified at this page; you must gather the following information from your account tenancy id user id default home region Read More


Announcing oci-gradle-plugin version 0.1.0

The first release of the OCI Gradle Plugin is out! The plugin lets you interact with the Oracle Cloud Infrastructure Java SDK. The behavior provided by OCI Java SDK is quite extensive, thus for this release the plugin delivers the minimal features required to setup and work with instances. Here’s an example, the following command will setup an Instance in a particular Compartment, while at the same time setting up a new VCN, Subnets, an InternetGateway and an InstanceConsoleConnection, allowing you to SSH to the freshly created instance $ ./gradlew setupInstance \ –compartment-id=ocid1.compartment.oc1…noa \ –instance-name=test \ –image=Oracle-Linux-7.6-2019.04.18-0 \ –shape=VM.Standard2.1 \ Read More


New features in Kordamp Gradle plugins

Version 0.14.0 of the Kordamp Gradle plugin suite is ready! This release brings a host of updates that should make your life easier when looking for gaining insights into your build. To begin with, all reporting tasks provided by the org.kordamp.gradle.base plugin will use ANSI colors if the terminal supports them. This make its easier to determine a particular setting, here’s for example the settings for the info and test (new) sections found in the alibaba/Sentinel project: The color code is as follows white: property names yellow: string literals cyan: numbers green: boolean, when true red: boolean, when false Speaking Read More


Gaining insight into a Gradle build

Every Gradle build has access to a default set of tasks that can deliver insight information on your build settings. You probably have come across the dependencies task. This task can display dependencies associated with all configurations of a particular project; you can even instruct which configuration to be queried if the list of configurations happens to be very long. Let’s say we have a Java project that looks like this build.gradle plugins { id ‘java’ id ‘org.kordamp.gradle.project’ version ‘0.11.0’ } ext.build_property = ‘build’ config { license { enabled = false } publishing { enabled = false } } repositories Read More


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