Continuous Integration (CI)

• To solve the problems with Big Bang Integration, Continuous Integration was proposed
• The Basic Idea of CI is
  • Perform Integration of all components on every change by any component, initially it might fail
• CI =
  • Build/package the code
  • Run tests:
    • unit tests, integration tests
    • smoke tests, sanity tests
  • Static Code Analysis
• Who should run CI?
  • Manual: Not feasible
  • Automated
• To Perform Automated CI, We need softwares. This is what CI/CD Engine is all about. Some Examples
  • Cruise Control
  • Jenkins/Hudson
  • Azure DevOps
  • Github Actions

Basic Principle of Automate

• Know manual steps
• Improve Readabililty:
  • automated steps
  • executions

Manual steps

Building/Packaging the code

• I will be focusing of 4 tech stacks
  • java
  • .net
  • python
  • react/angular using node js
• We will Docker build steps

Running Applications

• Categorization
  • Compiled: executable with no extra installation
    • C
    • C++
    • Golang
  • Interpreted: directly run code with installed interpretor
    • Python
    • node js
  • Hybrid: Get IL/Bytecode and run on IL with install runtime
    • Java
    • C#
      

Java

• Basic Build steps
  Refer Here

Exercise

• Compile a C language hello-world code
• Findout what GNU make tool.