onjin

#!/usr/bin/env python
import argparse
import getpass
import sys
from contextlib import contextmanager
from distutils.util import strtobool


def yes_or_no(question, default='no'):
    """Ask question and wait for yes/no answer.

onjin

Tests for ports & adapters

• Unit tests are testing kernel
• Integration tests are testing ports
• Component tests are testing adapters
• System tests are testing multiple systems (hexagons)

https://speakerdeck.com/skmetz/magic-tricks-of-testing-railsconf?slide=187

onjin

modularity

Notes to modularity talk:

• https://www.youtube.com/watch?v=2oJrjyp7GHE

monolit first

• create monolit - learn the domain
• move to modularity - discover boundaries

onjin

requirements

Install https://github.com/jrfonseca/gprof2dot

Run profiler

$ python -m cProfile -o profiler.pstats ./some/python/code.py
$ gprof2dot -f pstats profiler.pstats | dot -Tpng -o profiler.png  # generate PNG calltree image
$ pyprof2calltree -i profiler.pstats -k # debug with kcachegrind

onjin

notes to The Discipline of Finishing by Conor Neill

https://www.youtube.com/watch?v=zXCiv4sc5eY

Failure = Repeating the bad decisions

Success = Consistency on good decisions

Rule of success = Delay gratification!

onjin

Feature toggles types

Short memo from:

• https://martinfowler.com/articles/feature-toggles.html

Release Toggles

For not finished / not tested features

• Configuration type: static - per environment, f.i. enabled only on test/stage
• Lifetime: Short - until feature is finished / tested

onjin

#!/usr/bin/env bash

set -eu

pane_fmt="#{pane_id} #{pane_in_mode} #{pane_input_off} #{pane_dead} #{pane_current_command}"
tmux list-panes -s -F "$pane_fmt" | awk '
  $2 == 0 && $3 == 0 && $4 == 0 && $5 ~ /(bash|zsh|ksh|fish)/ { print $1 }
' | while read -r pane_id; do
  # renew environment variables according to update-environment tmux option
  # also clear screen

onjin

if [[ -n "$PS1" ]] && [[ -z "$TMUX" ]] && [[ -n "$SSH_CONNECTION" ]]; then
  tmux attach-session -t ssh_tmux || tmux new-session -s ssh_tmux
fi

onjin

version: '3'
services:
  sentry:
    image: 'sentry:latest'
    command: start
    networks:
      - sentry
      - traefik-public
    depends_on:
      - redis

onjin

from typing import Any, Callable, TypeVar, cast


F = TypeVar('F', bound=Callable[..., Any])

# A decorator that preserves the signature.
def my_decorator(func: F) -> F:
    def wrapper(*args, **kwargs):
        print("Calling", func)
        return func(*args, **kwargs)