Modern Make for modern (Rails) programmers

Transcript

1. Modern Make
   for
   modern (RAILS) developers
   Ivan Nemytchenko, @inem, inem.at
   RubyConf Brasil 2020
   CRASH COURSE
   

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2. Ivan Nemytchenko
   • rubyist since 2006
   • former GitLabber
   • teacher
   • railshurts.com author
   • freelance/consulting
   

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3. • painlessrails.com
   

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4. http://urban-connect.ch
   

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5. What to expect here
   • What’s the problem?
   • The basics
   • Advanced stuff
   • Examples from real project
   • Principles
   

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6. Make?
   

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7. What’s the problem?
   

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8. Modern Developer?
   • Dev+Ops
   • Multiple stacks (Rails + JS for example)
   • Multiple projects
   • Multiple environments (dev, ±docker, ssh)
   

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9. Command line interface tools
   • git
   • ssh
   • rails
   • bundle
   • docker
   • docker-compose
   • heroku
   • aws
   • ansible
   • ansible-playbook
   • yarn
   • …
   

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10. Command line interface tools
    

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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
    

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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!
    

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13. • Imperative, not declarative
    • Implementation, not semantics
    • Have to remember a lot of low-level
    details
    • Outdated README-s
    What’s the problem?
    

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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
    

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15. How about?
    make deploy
    

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16. make deploy
    

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17. Run tests
    MINITEST_REPORTER=SpecReporter bundle exec
    bin/rails test
    

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18. Make test
    

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19. Yay!
    • You can use Make now!
    

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20. Modern Make
    In practice
    

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21. Why not … ?
    • Rake
    • Yarn
    • Bash scripts
    

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22. USE Make
    AS GLUE BETWEEN
    TECHNOLOGIES!
    

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23. Principles
    • No instructions in Readme!
    • Semantics first!
    • Duplication is ok!
    • StackOverflow → Makefile
    

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24. Modern make
    http://makefile.site
    http://re.dopo.st/201015204327
    http://inem.at
    

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