Continuous Integration: A case study

Transcription

1 Continuous Integration: A case study Vaibhav Kothari Talentica Software (I) Pvt ltd 1

2 Abstract Developer s dilemma QA s dilemma Continuous Integration? Case study What is accomplished? Benefits of CI Recommended Practices Other Tools Available Q&A 2

3 Developer s dilemma Will my changes integrate successfully with all versions of code? How much time/effort it will take to build and deploy from different source repository branches? Why can t QA take this up!! 3

4 QA s dilemma How much time/effort it will take to build and deploy from different source repository branches? How much time/effort will it take test builds from different sources? I can't build that often! 4

5 Continuous Integration?? As wiki says Continuous integration involves integrating early and often, so as to avoid the pitfalls of "integration hell". The practice aims to reduce rework and thus reduce cost and time. 5

6 Continuous Integration. 6

7 Continuous Integration. Integrating the build process with continuous development. Concurrent build preparation from different branches. Integrating build system with deployment and test automation. Monitoring build and test. 7

8 CI in agile development 8

9 Case Study Current Product development Lifecycle QA Team A Dev Team A Dev Team B trunk Branch1 Branch2 Build Build Deployment Deployment Shop1 Shop2 Shop3 Shop1 Shop2 Smoke Test Smoke Test QA Team B Dev Team C Shop3 9

10 Case Study Where does integration server stands? Dev Team A Deployment Shop1 QA Team A Dev Team B trunk Branch1 Branch2 Build Continuous Integration server Functional Test Smoke Test Shop2 Shop3 Shop1 Shop2 QA Team B Shop3 Dev Team C 10

11 Case Study Features to look out for Basic Continuous Integration Build Triggering options Support for tools Set ups and usability Build logs and metrics Notifications Plugins, Extensions 11

12 Case Study Hudson CI Open source tool available as deployable war file. Each build and deployment process can be set up as a separate project and run concurrently or subsequently. Supports distributed builds The most used CI server in an informal developer survey! 12

13 Case Study Tools to be Integrated Sub version Version control Windows XP/Linux OS Hudson CI Continuous Integration Apache Ant Build Tool Selenium RC Test Automation Apache Tomcat 6.0 Web server 13

14 Case Study Setting up a build Job 14

15 Case Study..Defining build triggers 15

16 Case Study Post build tasks Automate build and deployment process and server restart. Integrate Hudson with test automation suite Remote deployment of multiple builds and test suite invocation 16

17 Case Study Post build tasks 17

18 Case Study Distributed Builds Build distribution using Single Hudson installation. Single click using Master/Slave mode. Concurrency in largely distributed projects. 18

19 Case Study Building Remotely Master Server Slave build severs 19

20 Case Study Slave set up in Hudson 20

21 Case Study.What s achieved? 21

22 Benefits of CI Nobody minds it! Single click process. Early identification of build issues. Early identification of bugs. Incremental development. Constant availability of sane build. Efficient use of Test Automation. More time for Quality improvement. 22

23 Recommended Practices Maintain a code repository Automate the build and Deployment Make your build self-testing Everyone commits every day Every commit (to mainline) should be built Keep the build fast Test in a clone of the production environment Make it easy to get the latest deliverables Everyone can see the results of the latest build 23

24 Other Tools Available Tools Advantages Limitations Cruise Control - Supports wide project and SCM tool. - Good notification techniques - Large number of plugins - Complicated set up - XML based configuration Continuum - Easy to install and use - Web Administrative console - Not suitable for big projects Luntbuild - Easy to install and use - Web Administrative console - Supports wide range of tools - Not support remote project build up TeamCity - Supports distributed build - Professional support (JetBrains) - Advanced options -Commercial tool (free for 10 projects) Bamboo -Advanced distributed build options -Integrates with JIRA - Commercial tools 24

25 Q&A 25