Modern Make for modern (Rails) programmers

1. Modern Make for modern (RAILS) developers Ivan Nemytchenko, @inem, inem.at RubyConf Brasil 2020 CRASH COURSE
2. Ivan Nemytchenko • rubyist since 2006 • former GitLabber • teacher • railshurts.com author • freelance/consulting
3. • painlessrails.com
4. http://urban-connect.ch
5. What to expect here • What’s the problem? • The basics • Advanced stuff • Examples from real project • Principles
6. Make?
7. What’s the problem?
8. Modern Developer? • Dev+Ops • Multiple stacks (Rails + JS for example) • Multiple projects • Multiple environments (dev, ±docker, ssh)
9. Command line interface tools • git • ssh • rails • bundle • docker • docker-compose • heroku • aws • ansible • ansible-playbook • yarn • …
10. Command line interface tools
11. What’s the problem? ansible-playbook -i inventory/production -- tags "deploy" app-server.yml --become- user=app --extra-vars=extra.txt --vault- password-file="~/.ansible/vault.txt" -vvv
12. What’s the problem? ansible-playbook -i inventory/production -- tags "deploy" app-server.yml --become- user=app --extra-vars=extra.txt --vault- password-file="~/.ansible/vault.txt" -vvv Imperative, not declarative!
13. • Imperative, not declarative • Implementation, not semantics • Have to remember a lot of low-level details • Outdated README-s What’s the problem?
14. Deployment ansible-playbook -i inventory/production -- tags "deploy" app-server.yml --become- user=app --extra-vars=extra.txt --vault- password-file="~/.ansible/vault.txt" -vvv
15. How about? make deploy
16. make deploy
17. Run tests MINITEST_REPORTER=SpecReporter bundle exec bin/rails test
18. Make test
19. Yay! • You can use Make now!
20. Modern Make In practice
21. Why not … ? • Rake • Yarn • Bash scripts
22. USE Make AS GLUE BETWEEN TECHNOLOGIES!
23. Principles • No instructions in Readme! • Semantics first! • Duplication is ok! • StackOverflow → Makefile
24. Modern make http://makefile.site http://re.dopo.st/201015204327 http://inem.at