Development is easy these days

Tomáš Tomeček
Red Hat

Intro

• Engineer @ Red Hat
• Codes a lot
• Doing containers again

Why?

• Share the knowledge

Full workflow

• Setting up a development environment
• Tinkering terminal environment
• Writing code
• Running code
• And of course testing code
• Deploying code

Runtime environment

• Separate your project from others
  • Ecosystem based
    • virtualenv
    • RVM
    • npm/go/rust out of the box
  • System based - containers
  • Virtualization (vagrant)

Automate!

• Don't be shy with makefiles
  • Or whatever the community is suggesting

Terminal environment - shell

• Tinker your shell
• Improving prompt

  [user@hostname this-directory] 

  user@hostname ~/g/this-directory [→2] [master|3+] 

• Use aliases, please!
• Petr Hodač: today 12:15, Pokročilé tipy a triky v shellu.
• Michal Halenka: today 14:30, Z shell

Terminal environment

• Terminal multiplexer (tmux)
• Easy filesystem navigation (autojump)
• *-sensible

Editor

• Pick the right one
• And become a ninja in your editor
• E.g. I picked vim
• Petr Hodač: in parallel, VIM - advanced

Code

• Style conventions
• go-fmt, autopep8
• Static analysis - linter
• Reviews

Running the code

FROM fedora
RUN dnf install -y @dependencies
COPY . /app
CMD ["/app/start-the-app"]
					

Running the code II

FROM fedora
RUN dnf install -y @compiler @libraries
COPY . /app
WORKDIR /app
CMD ["make"]
					

Running the code III

docker-compose up

Tests

• CI
  • Travis CI
  • CircleCI
• Running tests
• Integration tests

Running tests

FROM the-app-image
RUN dnf install -y @dependencies @test-libraries
CMD ["make", "unit-test"]
					

git

• Rebase
• cherry-pick
• reset --hard
• Resolving conflicts
• tig

tig

Dotfiles

• Public/private
• Submodules
• Install script
• stow

Invitation to our workshop

• E112, Sunday, 10.00 - 13.00
• me and Peter Schiffer
• Containers: workshop
• Bring your own projects you want to containerize

Questions are welcome!

• TomasTomecek/openalt-2016-talk
• @TomasTomec