Rake Task Management Essentials
Andrey Koleshko
Language: English
Pages: 93
ISBN: 1783280778
Format: PDF / Kindle (mobi) / ePub
Deploy, test, and build software to solve realworld automation challenges using Rake
About This Book
- Solve real-world automation challenges with human readable code
- Build or deploy an application package quickly
- Easy-to-follow instructions to speed up tasks and manage them efficiently
Who This Book Is For
If you are a developer who is acquainted with the Ruby language and want to speed up writing the code concerned with files, then this book is for you. To start reading this book, a basic knowledge of Ruby is required; however, an extensive experience with the language is not necessary.
What You Will Learn
- Use the rake command-line tool efficiently
- Learn Rake's language to write clear custom tasks
- Run tasks in parallel to speed up the overall runtime of the tasks used
- Work with file transformations to manage file tasks
- Refactor a Rake project with the rules, prerequisites, and other technical features built into Rake tools
- Configure a scheduler to run recurring tasks on a server
- Configure continuous integration with Rake using a Jenkins example
- Integrate Rake with the Rails web framework to write Rails-specific rake tasks
In Detail
Rake is a build automation tool written in Ruby. It allows you to specify tasks and describe dependencies as well as group tasks in a namespace. Rake uses Ruby's anonymous function blocks to define various tasks, allowing the use of the Ruby syntax. Rake's goal is to automate build processes quickly and expressively.
"Rake Task Management Essentials" is a practical guide that covers the latest techniques in building, testing, and debugging rake tasks to solve real-world automation challenges. The book starts with a basic knowledge of Rake, allowing you to solve repetitive tasks. Then it provides you with information about processes performed with files, which is crucial for understanding the application of the tool. It includes demonstrations to show you how tasks can be run in parallel and how they can be applied in practice. Thereafter, it integrates Rake with Ruby with the help of simple and clear examples. By the end of this book, you will know how Rake has changed the programming world, especially in the Ruby community.
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Variables or resources (for example, the database or files) and the parallel tasks are simultaneously performing operations under them, we must prevent race conditions with additional effort. Basically, this requires using additional tools to synchronize the data. You've already seen the problem with the @a variable in the previous example. To get rid of the problem, we have to ask the set_b task to wait for the set_a task. However, as we don't have public access to their threads, we can't to do.
Https://github.com/cldwalker/debugger. Summary This chapter provided us with a basic knowledge to debug Rake projects. We learned how to figure out the order of the tasks that will be executed. We briefly saw how to use the Ruby debug tool in the example of the debugger gem. In the next chapter, you will be introduced to the theme of how Rake is integrated with the most famous Ruby framework, Rails. [ 71 ] Integration with Rails This chapter explains how Rake is used by Rails. This is a.
MiniTest::Unit::TestCase def setup Rake.application.init Rake.application.load_rakefile @task = Rake::Task[:send_email] @task.reenable end def teardown if File.exists?(Mailer::DESTINATION) File.delete(Mailer::DESTINATION) end end def test_sending_email_with_default_params @task.invoke assert_equal email, "Subject: Greeting!\nHello!" [ 82 ] Chapter 8 end def test_sending_email_with_custom_subject_and_body @task.invoke('Test', 'Hi!') assert_equal email, "Subject: Test\nHi!" end def.
To debug rake tasks with help of the rake command-line tool's arguments and with the debugger gem. Any Rails application contains Rake and a Rake application is always ready to use them in a convenient way. This was presented in Chapter 7, Integration with Rails. This chapter also showed you how to run the recurrent rake tasks. You can run them on any Rake or Ruby project as well, but as it's used often with the Rails bundle, this information was provided in this chapter. Why you should test rake.
Parallel task execution 60 pathmap method used, for transforming file lists 37-41 prerequisites method 33 project setting up 51-53 R race conditions preventing 61 Rails custom rake tasks, using in 75, 76 [ 104 ] Rake, integrating in 73-75 Rake installing 8 integrating, in Rails 73-75 Rake code conventions about 23 using 23, 24 Rakefile about 9 creating 9 loading, import method used 19-21 Rakefile, global used, for running tasks 11, 12 Rake project debugging, Ruby approach used 69-71 Rake.