How to jSparrow Jenkins?

Tool challenge presentation of jSparrow at Software Quality Days 2019

Transcript

1. How to jSparrow jenkins 1 Software Quality Days 2019 Reinhard Prehofer / jSparrow / Splendit TOOL-Challenge How to jSparrow Jenkins?
2. How to jSparrow jenkins 2 jSparrow -Speed Presentation For more than 15 years we have been optimizing legacy systems of our customers • Modernization strategy • Replatforming • Set up test infrastruktur • Migration including automated transformation www.splendit.at jSparrow automatically facilitates your routine work with maintenance of important programs • Refactoring of legacy Java code • Eclipse, Maven and Github • Enhancement of code quality • Enforcement of company standards www.jSparrow.eu With our experience in old and new languages, we build bridges between existing technologies and new requirements.
3. How to jSparrow jenkins 3 • Importance of SW maintenance ◦ 2/3 of life cycle costs ◦ keeps business processes running ◦ legacy systems are SW assets • Daily Problems ◦ Too many other projects ◦ Limited resources ◦ Changing technologies and trends ◦ increasing technical debt ◦ “Never change a running system?” SW Maintenance References University of Houston: http://sceweb.sce.uhcl.edu
4. How to jSparrow jenkins 4 Refactoring • Characteristic of Refactoring ◦ Enhancing maintainability of existing source code without changing external behavior ◦ Restructuring of code artifacts • Automatic Code Refactoring ◦ no manual tedious work required ◦ changes follow a predefined pattern ◦ thus individual manual errors are avoided ◦ complete projects refactored within minutes
5. How to jSparrow Jenkins 5 ISO-25010 & jSparrow: Which aspects of the ISO-25010 will be improved by jSparrow
6. How to jSparrow Jenkins 6 jSparrow - overview • Automatic Java Refactoring • Rule based approach ◦ 53 rules implemented • Configurable profiles • User guided • Safe workflow seamlessly integrated into Eclipse IDE ◦ Select rules ◦ Summary Page ◦ Apply changes • Fits in multiple infrastructure (Eclipse IDE, Maven, Github)
7. How to jSparrow Jenkins 7 jSparrow vs. others • jSparrow not only analyses Java sources - but automatically fixes issues and decreases technical debt • Mission critical – only safe changes performed ◦ some sonar issues are false positive • Chain of related rules - one rule creates input for following rules f.e.: Replace For-Loop with Enhanced For Loop => Replace For-Loop with Stream::forEach => Replace Expression Lambda with Method Reference • Categories of improvements ◦ Java 8/9/10 enhancements ◦ performance ◦ readability ◦ standards • User guided (Eclipse IDE) • runs on workstation and server
8. How to jSparrow Jenkins 8 Sonar meassurements (sonar way profile 7.1.0) Summary 1: 37,35 % sonar issues automatically fixed by jSparrow. Stay tuned … BETTER results to come!
9. How to jSparrow Jenkins 9 jSparrow - Jenkins Improvements • git-download your Jenkins-sources into Eclipse • Run SonarQube on these original Jenkins sources ◦ Run light-tests profile before jSparrow changes • Run jSparrow: ◦ Select sources ◦ Select 52 rules (including logging rule, excluding renaming rule) ◦ Summary page ◦ Apply changes • Run light-tests profile after jSparrow changes • Test Jenkins functionality after Code Refactoring and Modernization
10. How to jSparrow Jenkins 10 run jSparrow (1 of 4) • Select sources • Select 52 rules (including logging rule, excluding renaming rule) • Summary page • Apply changes select sources via project explorer next step • rule selection • logging rule • rename fields
11. How to jSparrow Jenkins 11 run jSparrow (2 of 4) • Select sources • Select 52 rules (including logging rule, excluding renaming rule) • Summary page • Apply changes profiles exportable selected rules rule description implemented rules to select technical requirements
12. How to jSparrow Jenkins 12 run jSparrow (3 of 4) • Select sources • Select 52 rules (including logging rule, excluding renaming rule) • Summary page • Apply changes run duration found issues estimated time needed for manual changes changed files browse findings old sources changes
13. How to jSparrow Jenkins 13 run jSparrow (4 of 4) • Select sources • Select 52 rules (including logging rule, excluding renaming rule) • Summary page • Apply changes Apply
14. How to jSparrow Jenkins 14 jSparrow - Jenkins Improvements • git-download your Jenkins-sources into Eclipse • Run SonarQube on these original Jenkins sources ◦ Run light-tests profile before jSparrow changes • Run jSparrow: ◦ Select sources ◦ Select 52 rules (including logging rule, excluding renaming rule) ◦ Summary page ◦ Apply changes • Run light-tests profile after jSparrow changes • Test Jenkins functionality after Code Refactoring and Modernization
15. How to jSparrow Jenkins 15 jSparrow statistics of Jenkins Some KPIs of refactoring Jenkins: • 166.870 - LOC in Java • jSparrow results: • 10.806 - issues fixed • 3 minutes 01 second – jSparrow execution time • 81 days 5 hours 01 minute - total saved time fig: Run Summary - jenkins core
16. How to jSparrow Jenkins 16 jSparrow AND Jenkins • How did jSparrow improve Jenkins: ◦ Automatically refactored 10.806 issues (See our results) • How can you improve your code with Jenkins and jSparrow ◦ Integrate jSparrow into your maven build ◦ Define your ruleset in a YAML ◦ Define your profile in a YAML ◦ Run jSparrow in your builds Fits in multiple infrastructure!
17. How to jSparrow Jenkins 17 jSparrowing .. • Are you still correcting your code manually ? • When do you start to jSparrow your Code ◦ Automated ◦ User guided ◦ Safe ◦ Fast, faster, jSparrow ◦ Integrated into • Eclipse • maven/github – including Jenkins build Don´t lose time with tedious and repetitive work – let jSparrow do it! Want to see it live?! Meet us at booth # 13 Just 3 minutes for a proof!!