Code to process a log that I created using TracePoint

tracepoint_log_process.rb

require 'json'
require 'csv'

class Line
  attr_reader :thread_no, :line_no, :path, :klass, :method_id, :event, :code, :line

  def initialize(row)
    @thread_no, @line_no, @path, @klass, @method_id, @event, @code = row
  end

  def clean_path
    path
      .gsub(/\/Users\/zetter\/\.rbenv\/versions\/2\.6\.0\/lib\/ruby\/gems\/2\.6\.0\/gems\/[^\/]*\//, '')
      .gsub('/Users/zetter/Projects/railstrace/blog/', '')
      .gsub('/Users/zetter/.rbenv/versions/2.6.0/lib/ruby/2.6.0/', '')
  end

  def name
    "#{method_prefix}#{method_id}"
  end

  def clean_klass
    @klass.gsub(/^#<Class:/, '').gsub(/>$/, '')
  end

  def method_prefix
    if @klass.start_with?('#<Class:')
      '.'
    else
      '#'
    end
  end

  def key
    "#{clean_klass}-#{method_id}".downcase.gsub(/[^a-z0-9_]/, '-').gsub(/-+/, '-').gsub(/-$/, '')
  end

  def type
    if path.include?('/Users/zetter/Projects/railstrace/blog/')
      'application'
    elsif path.include?('/lib/ruby/gems/2.6.0/gems')
      gem_name = path.split('/')[11].split('-').first
      "gem/#{gem_name}"
    elsif path.include?('/lib/ruby/2.6.0/')
      'standard_library'
    else
      'other'
    end
  end
end

lines = []

CSV.foreach("tracepoint8.csv") do |row|
  lines << Line.new(row)
end


lines = lines.select {|line| line.thread_no == "5" && (line.event == 'call' || line.event == 'return')}

OUTPUT = []

TYPES = []

def process_lines(lines, x_offset = 0, y_offset = 0)
  head, *tail = lines
  if head.nil?
    return x_offset, []
  elsif head.event == 'call'
    new_x_offset, tail, previous = process_lines(tail, x_offset + 1, y_offset + 1)
    OUTPUT << {
      key: "#{x_offset}-#{head.key}",
      x: x_offset,
      width: (new_x_offset - x_offset),
      y: y_offset,
      path: head.clean_path,
      line_start: head.line_no,
      name: head.name,
      class: head.clean_klass,
      type: head.type,
    }
    TYPES << head.type
    process_lines(tail, new_x_offset + 1, y_offset)
  elsif head.event == 'return'
    return x_offset + 1, tail, head
  end
end

process_lines(lines)

puts OUTPUT.to_json