Project Management - maven

• Project Management - maven

  • Objectives of maven

  • Tutorials

  • Using IDE to create maven Project

    • Other way - download maven

  • pom.xml

    • Maven coordinate

  • Archetype

  • Snapshot

  • Maven lifecycles

  • Dependencies

  • Plugins

  • Profiles

  • Resources

  • Repositories

  • Plugin repository

  • Builds

  • Excutions

  • Modules

  • Properties

  • Parent POMs

  • Best practises

  • Links

  • Used plugins

Using maven to manage our dependencies, excute commands (ie docker image creation and starting), compile and zip up, etc.

https://maven.apache.org/

Alternatives are Gradle(new) and Ant(old)

Objectives of maven

• Sets dependencies used in project

  • Can easily upgrade to new versions

• Describes how project will be built

• Provides unified build cycles

  • Maven have predefined lifecycles

• Run plugins to acheive goals like unit tests, acceptance tests, jar -ing project with dependencies, create and run docker images etc etc

Maven is just a collection of plugins that are configured in the pom.xml.

Tutorials

• https://youtu.be/Xatr8AZLOsE Maven Tutorial - Nice & Easy

Using IDE to create maven Project

• Prerequisites

  • need jdk

  • need IDE

• Use of IntelliJ

• create new project -> maven project

• ????

• check maven is on computer: mvn --version

Other way - download maven

• link ???

pom.xml

• Describes the project in this configuration file

• Project Object Model

• In XML

• Can get large but can use aggregation and modules to reduce this

Maven coordinate

This is the combination of GroupID + ArtifactID + Version

Archetype

• Is a template

• define the type of project to be created

• use maven-archetype-quickstart for general projects

• https://maven.apache.org/guides/introduction/introduction-to-archetypes.html

Snapshot

• When maven builds a jar/war file it will contain "snapshot" in name.

• snapshot is the latest code in project.

• https://maven.apache.org/guides/getting-started/index.html#What_is_a_SNAPSHOT_version

• https://stackoverflow.com/questions/5901378/what-exactly-is-a-maven-snapshot-and-why-do-we-need-it

Maven lifecycles

• Lifecycles are made of phases

• https://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html

Dependencies

• dependency management

• test dependencies

  • Only used for tests, thus do not need to packaged with prod jar

• transistive dependencies

• exclusions

• Maven central to get dependencies

Plugins

• http://javarevisited.blogspot.co.uk/2016/08/top-10-maven-plugins-every-java-developer-know.html

• https://www.fromdev.com/2012/07/25-best-free-maven-plug-ins-to-make.html

Profiles

Resources

Repositories

Plugin repository

Builds

Excutions

Modules

• Grab modules with dedicated poms, so these can be excuted in this pom

• https://maven.apache.org/guides/mini/guide-multiple-modules.html

• http://www.codetab.org/apache-maven-tutorial/maven-multi-module-project/

Properties

• extracting common things like version numbers or boolean references or paths, to be used else where

Parent POMs

• inheriting

Best practises

• http://www.kyleblaney.com/maven-best-practices/

• http://books.sonatype.com/mvnref-book/reference/index.html

Links

• https://www.tutorialspoint.com/maven/index.htm

• https://codurance.com/2016/08/19/maven-demystified/

Used plugins

• Fabric8

  • https://maven.fabric8.io/

• findbugs

  • https://gleclaire.github.io/findbugs-maven-plugin/

• pmd

  • https://maven.apache.org/plugins/maven-pmd-plugin/

• pitest

  • http://pitest.org/quickstart/maven/

• surefire

  • http://maven.apache.org/surefire/maven-surefire-plugin/

  • run all unit tests

• maven-surefire-report-plugin

  • generate reports

  • http://maven.apache.org/surefire/maven-surefire-report-plugin/

• Failsafe Plugin

  • run acceptance tests

  • http://maven.apache.org/surefire/maven-failsafe-plugin/

• maven-compiler-plugin

  • allows you to set your java language level

• Flywaydb

  • https://flywaydb.org/documentation/maven/

• Artifactory

  • Store jars and in cloud based space jfrog

  • https://www.jfrog.com/confluence/display/RTF/Maven+Repository

• Jar plugin

  • build jars of app

  • https://maven.apache.org/plugins/maven-jar-plugin/

• deploy plugin

  • http://maven.apache.org/plugins/maven-deploy-plugin/

  • deploy jars to repository

• Resources Plugin

• https://maven.apache.org/plugins/maven-resources-plugin/