TraceLocation

TraceLocation helps you trace the source location to ease reading huge open-source libraries in Ruby.

Installation

Add this line to your application's Gemfile:

gem 'trace_location'

And then execute:

$ bundle

Or install it yourself as:

$ gem install trace_location

Usage

Example: Track establish connection in Active Record

config = Rails.application.config.database_configuration[Rails.env]

TraceLocation.trace do
  # You just surround you want to track the process.
  ActiveRecord::Base.establish_connection(config)
end

Then you can get logs like this: .md, .log, .csv

Trace method options

name	content	example
format	:md, :log, :csv (default: :md)	:md
match	Regexp, Symbol, String or Array for allow list	[:activerecord, :activesupport]
ignore	Regexp, Symbol, String or Array for deny list	/bootsnap|activesupport/
methods	Symbol or Array of method names	[:call]

More examples

Example: Track the validation process of Active Record

book = Book.new(title: "My Book Title")
TraceLocation.trace(match: /activerecord/) { book.validate }

Results: .md, .log, .csv

Example: Track the lifecycle of Rails application

env = Rack::MockRequest.env_for('http://localhost:3000/books')

TraceLocation.trace do
  status, headers, body = Rails.application.call(env)
end

Results: .md, .log, .csv

Example: Track the has_secure_password in User model

class User < ApplicationRecord
  # temporary surrounding with TraceLocation#trace
  TraceLocation.trace(format: :md, ignore: /activesupport/) do
    has_secure_password
  end

Results: .md, .log, .csv

Example: Track the rendering process of action in controller class

class BooksController < ApplicationController
  before_action :set_book, only: [:show, :update, :destroy]

  # GET /books
  def index
    @books = Book.all

    # temporary surrounding with TraceLocation#trace
    TraceLocation.trace(format: :md, ignore: /activesupport|rbenv|concurrent-ruby/) do
      render json: @books
    end
  end

Results: .md, .log, .csv

License

MIT License