searls

require "faker"

def lorem_paragraphs
  rand(2..4).times.map {
    rand(4..6).times.map {
      Faker::Lorem.sentence(word_count: rand(10..40))
    }.join(" ")
  }.join("\n\n")
end

searls

class TailwindClassBuilder
  include ActionView::Helpers::TagHelper

  def button_classes(options)
    button_type = options.delete(:button_type) { :button }

    class_names(
      # general classes
      "mt-4 px-1 sm:px-3 py-sm sm:py-1 font-semibold bg-transparent border rounded",
      case button_type

searls

# This is a stupid utility to squelch stdout output via puts (could do the same
#   for warn; could also override stdout entirely)
#
# Usage in a test, after requiring and including it:
#
#   setup do
#     suppress_puts([
#       /Execution context was destroyed, most likely because of a navigation/
#     ])
#   end

searls

class ValidatesDeeply
  Failure = Struct.new(:model, :message)
  Result = Struct.new(:valid?, :failures)

  def validate(model, visited = Set.new)
    return Result.new(true) if visited.include?(model)
    visited.add(model)

    combine_results(Result.new(model.valid?, extract_failures(model)), *validate_associations(model, visited))
  end

searls

:root,
.light {
  --accent: 183 64 233;
  --accent-bright: 183 64 233;
  --accent-light: 217 155 244;

  --bg-primary: 249 249 249;
  --bg-secondary: 230 230 230;

  --border-primary: 17 24 39;

searls

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

# 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

Running with patch

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

Yields

Creating a post and uploading a video

searls

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

class FeedsController < ApplicationController
  def index
    @posts = Post.with_visuals.order(published_at: :desc)
  end
end