1. https://flic.kr/p/Lj3bW
Software Configuration Management

2. What knowledge/skills have you learned so far?OR
Software Engineer
Code Monkey
How can you tell?

3. Consult the SWEBOK Guide (Software Engineering Body Of Knowledge)

4. So what’s in this SWEBOK anyway?
One possible definition of Software Engineering: Appling SWEBOK to software creation and evolution
So what’s in this SWEBOK anyway?

5. Has Boot Camp covered any?
15 Knowledge Areas (KAs)
Software Requirements
Software Design
Software Construction
Software Testing
Software Maintenance
Software Configuration Management
Software Engineering Management
Software Engineering Process
Software Engineering Models and Methods
Software Quality
Software Engineering Professional Practice
Software Engineering Economics
Computing Foundations
Mathematical Foundations
Engineering Foundations
Has Boot Camp covered any?

6. 15 Knowledge Areas (KAs) 3 stand out to me Let’s pick on this one
Software Requirements
Software Design
Software Construction
Software Testing
Software Maintenance
Software Configuration Management
Software Engineering Management
Software Engineering Process
Software Engineering Models and Methods
Software Quality
Software Engineering Professional Practice
Software Engineering Economics
Computing Foundations
Mathematical Foundations
Engineering Foundations
3 stand out to me
Let’s pick on this one

7. Software Configuration Management (SCM) “Configuration management … is the discipline of identifying the configuration of a system at distinct points in time for the purpose of systematically controlling changes to the configuration and maintaining the integrity and traceability of the configuration throughout the system life cycle.” (SWEBOK)

8. Which have you learned about?
SCM Subtopics
Which have you learned about?

9. Git! SCM Subtopics Let’s see how much you’ve learned…
“Version control tools”
Let’s see how much you’ve learned…

10. Pop Quiz 5 questions Update diagram in each
Commit nodes
Branch nodes
Based on actions of Alice and Bob
Collaborating via GitHub repo

11. Start like this Scott Fleming SF 1 GitHub 11111 master Alice Bob

12. Question 1 Alice: Bob: (include the HEAD node)
$ git clone
$ cd whatever
Bob:
(include the HEAD node)

13. Question 2
Alice:
$ git branch myfix
$ git checkout myfix

14. Question 3 Alice: Bob: $ rails generate scaffold User … $ git add .
$ git commit # 22222
Bob:
$ rails generate scaffold Micropost …
$ git commit # 33333

15. Question 4
Bob:
git push

16. Question 5
Alice:
git pull

17. What if… Alice did this: Bob did this: app/models/micropost.rb
class Micropost < ActiveRecord::Base
validates :content, length: { maximum: 140 }
end
app/models/micropost.rb
Bob did this:
class Micropost < ActiveRecord::Base
validates :content, length: { maximum: 120 }
end
app/models/micropost.rb

18. What if Alice did this? $ git checkout master $ git merge myfix master
11111
master
22222
33333
myfix
$ git checkout master
$ git merge myfix

19. Manually fix the file; git add and commit
$ git merge myfix
Auto-merging app/models/micropost.rb
Automatic merge failed; fix conflict and then commit result.
class Micropost < ActiveRecord::Base
<<<<<<< HEAD
validates :content, length: { maximum: 140 }
=======
validates :content, length: { maximum: 120 }
>>>>>>> myfix
end
app/models/micropost.rb
To resolve:
Manually fix the file; git add and commit

20. SCM is more than version control Can you think of more that you’ve learned?

21. SCM is more than version control Can you think of more that you’ve learned?
“Build handling tools”:
rvm
bundler

22. SCM Problems: Your code AND external dependencies
ruby
jquery
Your code
sqlite …

23. rvm and bundler work together to control external dependencies
Let’s take a quick tour

24. RVM: Set Rails and Gemset versions
Few more handy RVM commands:
$ rvm list
$ rvm current
$ rvm info

25. Problem: RVM config is not part of project How to solve?

26. Problem: RVM config is not part of project How to solve?
Gemfile in project stores all Gems (external dependencies) and their versions
Use bundle to run (exec) commands
(automagically uses versions in Gemfile)
RVM also can use Gemfile versions when pwd is in project (see chapters and 3.6.1)

27. Summary Software Configuration Management (SCM) Version control tool
Git
Build handling tools
rvm
bundler
What’s next?