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Justin Searls searls

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searls / postcss.config.js
Last active March 6, 2024 19:37
const css4ColorsToLegacyRgbaPlugin = {
postcssPlugin: 'these-colors-dont-run',
Once (root) {
root.walkDecls((decl) => {
const rgbRegex = /rgb\((\d{1,3})\s+(\d{1,3})\s+(\d{1,3})\s*(?:\/\s*(\d+\.?\d*))?\)/g
decl.value = decl.value.replace(rgbRegex, (match, r, g, b, a) => {
if (!a || a === '1' || a === '1.0') {
return `rgb(${r}, ${g}, ${b})`
} else {
return `rgba(${r}, ${g}, ${b}, ${a})`
@searls
searls / ensures_logger_broadcasts_to_stdout.rb
Last active March 4, 2024 19:18
This logger wrapper I wrote.
# Leverages the BroadcastLogger introduced in Rails 7.1 to wrap the current
# logger in a new logger that broadcasts to both the current logger and $stdout
#
# (Announcement: https://rubyonrails.org/2023/9/29/this-week-in-rails)
#
# If the current logger already broadcasts to $stdout, it will not be wrapped,
# making it safe to call this method multiple times without knowing the current
# logging "sitch".
#
# Usage probably looks something like this:
@searls
searls / 1_bad.md
Created January 31, 2024 18:23

Running with patch

$ QUEUE_ADAPTER=async ./fix-preview-image-race-condition.rb

Yields

Creating a post and uploading a video
@searls
searls / readme.md
Created January 31, 2024 16:15
Uncovered a race condition when multiple preprocessed variants are specified for a previewable attachment (e.g. PDF, videos) and multiple TransformJob jobs are enqueued after create

TIL this script helped me figure out that

  1. Given a previewable attachment (video, pdf) has 2 preprocessed variants
  2. After being attached, these are enqueued [ActiveStorage::AnalyzeJob, ActiveStorage::TransformJob, ActiveStorage::TransformJob]
  3. All 3 jobs will (I assume?) separately download the video from storage to a tmp file
  4. Running asynchronously, a race condition results: both transform jobs will see no blob.preview_image exists yet and will BOTH create one
  5. Since a blob only has one preview_image attached, one preview image (and any variants associated with it) will be orphaned
  6. As a result when the attachment is purged, those orphaned blobs and variant record will fail to be purged

Not awesome things that happen in this case:

@searls
searls / feeds_controller.rb
Created January 7, 2024 15:41
Abbreviated example code that was exhibiting an N+1 only for non-image (video/pdf) preview representations
class FeedsController < ApplicationController
def index
@posts = Post.with_visuals.order(published_at: :desc)
end
end
@searls
searls / github
Created November 16, 2023 02:11
I got sick of going through multiple steps to visit the current directory's github URL when I'm looking at a terminal, but I don't necessarily want to install `gh` or `hub` just for this feature.
#!/usr/bin/env ruby
begin
repo = `git remote -v`.split("\n").find { |line|
line.include?("github.com")
}.split("\t")[1].match(/[email protected]:(.*).git/)[1]
system "open https://github.com/#{repo}"
rescue
warn "No github remote found"
@searls
searls / run
Created October 17, 2023 15:03
LOL, I wrote a Ruby script for generating spreadsheets conversationally with GPT-4.
~/code/searls/spreadsheetify $ ./script/run
Let's define columns.
Column name:
> Name
Column description: (optional)
>
More columns? [Yn]
>
@searls
searls / feedback_loops.rb
Last active July 24, 2023 16:26
A script for illustrating feedback loops completed given various conditions for a post on https://justin.searls.co
WORKDAY_HOURS = 8
LOOP_SPEED = 15
INCORRECT_EVERY = 25
LOW_FIDELITY_EVERY = 10
INCORRECT_LOOP_PENALTY = 3
LOW_FIDELITY_TIME_PENALTY = 2
time_remaining = WORKDAY_HOURS * 60 * 60
@searls
searls / sorbet_override.rb
Created June 17, 2023 13:20
Sorbet's documentation doesn't give particularly elucidative examples of using the runtime check callbacks available to override Sorbet's default behavior, so here's an example of how I'm doing it in Mocktail.
# Override Sorbet's runtime checks inside a given block's execution to allow
# testing of, among other things, Mocktail's own runtime type checks.
# See doc: https://sorbet.org/docs/tconfiguration
#
# Note that the messages being raised are the same as those constructed in
# sorbet-runtime (0.5.10847)
#
# Example usage:
# def test_not_a_class
# e = SorbetOverride.disable_call_validation_checks do
@searls
searls / mocktail-typed-difference.rb
Last active June 6, 2023 00:01
# typed: true
# This script prints:
#
# <-- Stubbing based on kwarg comparison with a TYPED method
# Should be tim: "jan greeting"
# Should be jan: "jan greeting"
# Should be nil: "jan greeting"
# <-- Stubbing based on kwarg comparison with an UNTYPED method