This post will detail how to setup a private Maven repository in order to easily share Java, Scala, Clojure, and Android libraries with internal teams or external customers.
In this example. we show how to use Jenkins CI to push an example library, and also how to utilize the example library from the repository through two different Java build tools -Maven and Gradle. This example is typical of Java-based organizations where a core frameworks team maintains a common library used by developers in different teams, each using their own preferred build tool. This example also applies to a company developing commercial Java-based software library that is stored in private Maven repository that controls access through read-only tokens.
The steps to push a Java library to a private Maven repository are:
- Choose a private Maven repository (build or buy) that has native integration with your CI (simple) or has a CLI (flexible)
- Create a private Maven repository
- Configure Maven pom.xml to use the private Maven repository plugin
- Configure Maven pom.xml with the private Maven repository url
- Configure your CI settings with environment variables & credentials required to communicate with the private Maven repository
- Configure triggers in CI to kick of Maven build and deploy
The steps to utilize a Java library from a private Maven repository (for Maven, Gradle and others) are:
- Check the documentation to understand how the private Maven repository supports your Java tool
- For Maven: Configure pom.xml to enable Maven to install the Java library stored in the private Maven repository
- For Gradle: Configure build.gradle to enable gradle to install the Java library stored in the private Maven repository
- For sbt: Configure build.sbt to enable sbt to install the Java library stored in the private Maven repository
Why Set Up A Private Maven Repository?
There are 2 main uses cases for private Maven repository.
Internal Java Library Deployment
As microservice architectures become increasingly prevalent in our industry, the number of internal libraries needed by applications, and the number of servers those libraries need to be installed has exploded. Internal devops teams need a secure, reliable, and efficient way store and distribute Java libraries used for deployment to servers that power their cloud applications.
Commercial Java Library Distribution
Commercial Java library software companies need a secure, reliable and efficient way to store and distribute their products to their paying customers. On top of that, they need fine-grain access control to restrict access to various Maven repositories holding different Java libraries based on the different licenses their paying customers possess.
Both have given rise to the importance of setting up a reliable and secure private Maven repository.
You can follow along with this post by cloning our example-framework project on Github.
Create packagecloud Maven repository
If you don’t have a packagecloud.io account already, click the button below to sign up and create your private Maven repository.