Help my Code Quality is not Manageable

Slides from my talk @CodingSerbia 2014

Transcript

1. Patroklos Papapetrou @ppapapetrou76 Help! My Code Quality is not manageable #CodingSerbia #SonarQube
2. Agenda • Code Quality in a nutshell • The seven axes of quality • Technical Debt • SonarQube in Action
3. private String _ugly_name; private String ANOTHER_$UGLY___NAME; private static String am_i_static; public void please_work(ArrayList objects){ for (Object object : objects){ if (object == null){ String toString = object.toString(); } else am_i_static = object.toString(); doSomething(object); } } private void doSomething(Object object) throws NullPointerException { throw new NullPointerException(object.toString()); }
4. What is code quality?
5. What is code quality? “It’s an indicator about how quickly developers can add business value to a software system”
6. Why measure? Source code is the heart of every system
7. Why measure? Developers don't write “new” software. They maintain “legacy” systems.
8. Why measure? We, the developers are lazy monkeys
9. The broken window theory
10. What we should measure; • Abstract numbers? (Almost) useless • Evolution through time? Definitely! • Metrics? Yes but which ones? • Welcome to the seven axes of quality
11. The seven axes of quality
13. The seven axes of quality Design Duplications Documentation Com plexity Unit Tests Coding rules Potential Bug Technical Debt
14. Technical Debt “If the debt grows large enough, eventually the company will spend more on servicing its debt than it invests in increasing the value of its other assets” Steve McConnell (Author of code complete)
15. This is how the source code looks like when we don't pay off technical debt
16. What is SonarQube; • Free & open source “Code Quality Platform” • Provides moment-in-time quality snapshots • Gives trends of lagging and leading indicators • Tracks developers’ seven deadly sins and Technical Debt
17. How it works?
18. SonarQube star Features Dashboards
19. SonarQube star Features Historical Data
20. SonarQube star Features Differential Views
21. SonarQube star Features Components drilldown views
22. SonarQube star Features Quality Gates
23. DEMO TIME
24. The big picture Track and reduce Technical Debt on an ongoing basis. (Clean up kitchen every day)
25. The big picture Engage all devs from day #1 (Not only mums wash the dishes )
26. I have a dream… ...that one day code quality management will be as much as important and essential is today source code management
27. Thank you ppapapetrou76 @ppapapetrou76 http://www.linkedin.com/in/ppapapetrou 1