Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Holding Down your Technical Debt with SonarQube
Search
Papapetrou Patroklos
May 23, 2014
Programming
3
1.6k
Holding Down your Technical Debt with SonarQube
Presentation slides about my talk during JEEConf 2014
Papapetrou Patroklos
May 23, 2014
Tweet
Share
More Decks by Papapetrou Patroklos
See All by Papapetrou Patroklos
Beyond Clean Code & Code Quality
ppapapetrou76
1
580
3 Years of Remote Working in 30'
ppapapetrou76
0
89
Things I learned after doing 2400 code reviews in 6 months
ppapapetrou76
1
94
Managing Global Teams - Lessons Learned
ppapapetrou76
1
76
Technical Debt - Simply Explained
ppapapetrou76
5
190
Managing Global teams @SwanCon 2015
ppapapetrou76
0
100
The Art of Software Gardening
ppapapetrou76
0
400
Tips to improve software development productivity
ppapapetrou76
2
370
Unit testing basics and more...
ppapapetrou76
2
84
Other Decks in Programming
See All in Programming
ポケモンで考えるコミュニケーション / Communication Lessons from Pokémon
mackey0225
3
130
フロントエンドの標準仕様をどう追っているか / How I follow the frontend standards specs
petamoriken
2
170
Applied NLP in the Age of Generative AI
inesmontani
PRO
3
1.1k
Frontend Magic mit CSS Houdini
joergneumann
0
420
App Router 悲喜交々
quramy
7
370
Pythonで改めて考える「クラス(class)」の使いどころ
os1ma
13
3.4k
Интеграционное тестирование: как приручить хаос
mariyasaygina
0
470
全方位強化 Python 服務可觀測性:以 FastAPI 和 Grafana Stack 為例
blueswen
1
360
ファーストペンギンBot @Qiita Hackathon 2024 予選
dyson_web
0
210
複数プロダクトの技術改善・クラウド移行に向き合うチームのフレキシブルなペア・モブプログラミングの実践 / Flexible Pair Programming And Mob Programming
honyanya
0
120
ACES Meet におけるリリース作業改善の取り組み
fukucheee
0
110
上手に付き合うコンポーネントテスト
quramy
3
1.2k
Featured
See All Featured
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
249
21k
Imperfection Machines: The Place of Print at Facebook
scottboms
263
13k
The Invisible Customer
myddelton
119
13k
StorybookのUI Testing Handbookを読んだ
zakiyama
26
5.1k
jQuery: Nuts, Bolts and Bling
dougneiner
61
7.4k
Scaling GitHub
holman
458
140k
Thoughts on Productivity
jonyablonski
67
4.2k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
44
2k
How to name files
jennybc
77
98k
Fight the Zombie Pattern Library - RWD Summit 2016
marcelosomers
230
17k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
23
1.7k
Pencils Down: Stop Designing & Start Developing
hursman
119
11k
Transcript
Holding Down your Technical Debt with Patroklos Papapetrou @ppapapetrou76 Holding
Down your Technical Debt with
About me
Agenda • Code Quality (what, why, when and how?) •
The seven axes of quality • Technical Debt • SonarQube Introduction • Demo time
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()); }
What is code quality?
What is code quality? “It’s an indicator about how quickly
developers can add business value to a software system”
Why measure? Source code is the heart of every system
Why measure? Developers don't write “new” software. They maintain “legacy”
systems.
Why measure? We, the developers are lazy monkeys
The broken window theory
When it's the right time to measure • From project's
day #0 • Continuosly • Prevention vs post-actions • Prioritize and plan
What we should measure; • Abstract numbers? (Almost) useless •
Evolution through time? Definitely! • Metrics? Yes but which ones? • Welcome to the seven deadly sins of developers
The seven axes of quality
The seven axes of quality Design Duplications Documentation Com plexity
Unit Tests Coding rules Potential Bug Technical Debt
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)
This is how the source code looks like when we
don't pay off technical debt
“Good” & “Bad” Technical Debt
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
How it works? Reads and analyzes source code files Computes
hundreds of metrics Associates them with analysis snapshots and stores them Shows the results in dashboards and widgets accessible by any browser
SonarQube for everything... • Initially designed for Maven Java projects
• Today supports more than 20 languages Commercial : ABAP, C, C++, Cobol, Natural, PL/SQL, Visual Basic Open Source : C++, C#, Flex, Groovy, Android, Javascript, PHP, Python, XML, Web(xhtml, jsp , jsf), Erlang
For testers / QA stuff. Which parts of the system
lack unit testing? … and for everyone For developers. Is my code “good”? How can I improve For architects. Is the initial design “broken”? How about complexity? For managers. Give me the numbers!!! Are we going up or down?
SonarQube star Features Dashboards
SonarQube star Features Historical Data
SonarQube star Features Differential Views
SonarQube star Features Components drilldown views
SonarQube star Features Quality Gates
DEMO TIME
The big picture Track and reduce Technical Debt on an
ongoing basis. (Clean up kitchen every day)
The big picture Engage all devs from day #1 (Not
only mums wash the dishes )
I have a dream… ...that one day code quality management
will be as much as important and essential is today source code management
Thank you ppapapetrou76 @ppapapetrou76 http://www.linkedin.com/in/ppapapetrou 1