How we changed full release and deploy from half a day to half an hour using Gradle and Jenkins.

1. THERE IS NO SNAPSHOT
How we changed a full release from half a day to half an hour

2. IN THIS EPISODE
Compile once
Gradle

3. DISCLAIMER
It’s mostly JVM, but the essence is transferable to other
languages

4. BACKGROUND
• Monolith
• 46 modules
• about 2100 .scala

5. • Build
• Test
• Integrationtest
• Release
• Deploy
• Maven

6. COMPILE, COMPILE, COMPILE
Compile +
test
Integration-test
mvn release

7. COMPILE, COMPILE, COMPILE
Compile +
test
Integration-test
mvn release
25-60 mins 50-120 mins 60-120 mins

8. SUM
• min 2h 30 mins
• at times 5 hours or more
• parallel builds == crash

9. THINK NEW

10. HOW?

11. COMPILE, COMPILE, COMPILE
Compile +
test
Integration-test
mvn release

12. COMPILE, COMPILE, COMPILE
Compile +
test Snapshots

13. COMPILE, COMPILE, COMPILE
Compile +
1.10.69 test
major.minor.buildnumber

14. OTHERS
????

15. DOOR #1

16. MAVEN

17. DOOR #2

18. SBT

20. DOOR #3

22. GRADLE

23. PROS
• Incremental and parallel
compiling
• Zinc
• Deployscripts in Groovy
• Unittest buildscripts
• ++

24. PLUGINS
Promoted
Build
Clone
Workspace Copy Artifact
Parameterized
Trigger Gradle

25. PLUGINS (NICE)
Cloudbees
Folders Build Pipeline
Git Pull
Request
Builder
Job Config Disk Usage
History
Jenkins slaves

26. PSEUDO EXAMPLE

27. Default parameter
VERSION=0.9

28. echo version=${VERSION}.${BUILD_NUMBER} >>
gradle.properties

29. gradle.properties:
version=0.9.3

30. gradle clean test assemble --parallel

31. archive artifact:
embedded-jetty-app.jar

32. archive workspace

33. Trigger
Send med JOB_NAME, BUILD_NUMBER, Git commit

34. Clone workspace

35. gradle integrationtest -x compileScala (++)

36. git pull ${init_job_git_commit}

37. Check for snapshot dependencies

38. Log in as PROD-deployer

39. Press Play on tape

40. curl slack.com channel #prod: “ we have liftoff”

41. Promote to PROD

42. PROMOTED BUILD

43. PROMOTED BUILD

Hard to read
Prefer
Build Pipeline

44. git tag v0.9.3

45. Keep build forever (look Ma! No Nexus/Artifactory!)

46. CLEAN, COMPILE,
TEST,INTEGRATIONTEST
• avg = 25 mins
• spikes at 30+ mins when
pull requests starts to build
at the same time
• All builds have final release
version
• who broke the build?

47. ?