DevOps Classroomnotes 18/Sep/2022

Maven

• Maven is one of most popular build and project management tool for Java and Java Based Languages
• The Other build tools for java include Ant, Gradle.
• Any Language has lot of built in functionalities which are provided by language or community, These are referred as dependencies.
• We need to perform dependency management.
• Maven used the approach of Convention over configuration.
• Maven reads a file which is pom.xml where the following are defined
  • project metadata
  • dependencies
• Refer Here
• Maven projects have goals
  • compile => Compile java sources and generate class files in target folder
  • test => Execute tests and generate test report
  • package => Create a packaging format (jar, war) after generating classes and test execution
  • install => The package created in the target folder will be copied into .m2 folder for other projects in your system to reuse the code
  • deploy => The package created will be copied into configured remote repository for other users to reuse.
  • clean => remove target folder.
• With this we can configure
  • archive the artifact
  • Generate Test Result Report.
• Dependencies:
  • Java (Maven) => Refer Here
  • .net (Nuget)
  • Python (pip)
  • javascript (npm)
• Package Repository:
  • local
  • central
    
    
• Unit Tests:
• Automated Tests using Test Automation Frameworks
  • Selenium
  • Postman
  • RPA
  • Jmeter
• To change maven’s behavior i.e. where to download dependencies from and where to deploy dependencies to, http proxy etc create a file called as settings.xml in .m2 folder Refer Here
• The tool configurations can be done from jenkins as well.

Exercises

• Learn about Environment Variables, Local Variables in Linux and Windows (Command Prompt/Powershell)
• Learn about YAML, JSON Refer Here
• Create a Linux vm (free instance)
  • Install python, pip
  • Install nodejs, npm
  • Install dotnet core