By Andrey Koleshko
Deploy, attempt, and construct software program to resolve realworld automation demanding situations utilizing Rake
About This Book
- Solve real-world automation demanding situations with human readable code
- Build or install an program package deal quickly
- Easy-to-follow directions to hurry up initiatives and deal with them efficiently
Who This publication Is For
If you're a developer who's accustomed to the Ruby language and wish to hurry up writing the code fascinated by records, then this publication is for you. to begin analyzing this publication, a easy wisdom of Ruby is needed; besides the fact that, an in depth adventure with the language isn't necessary.
What you'll Learn
- Use the rake command-line device efficiently
- Learn Rake's language to jot down transparent customized tasks
- Run initiatives in parallel to hurry up the general runtime of the initiatives used
- Work with dossier differences to control dossier tasks
- Refactor a Rake undertaking with the foundations, must haves, and different technical gains equipped into Rake tools
- Configure a scheduler to run habitual initiatives on a server
- Configure non-stop integration with Rake utilizing a Jenkins example
- Integrate Rake with the Rails net framework to write down Rails-specific rake tasks
Rake is a construct automation device written in Ruby. It lets you specify initiatives and describe dependencies in addition to staff initiatives in a namespace. Rake makes use of Ruby's nameless functionality blocks to outline a variety of initiatives, permitting using the Ruby syntax. Rake's aim is to automate construct strategies fast and expressively.
"Rake activity administration necessities" is a realistic consultant that covers the most recent ideas in construction, checking out, and debugging rake projects to resolve real-world automation demanding situations. The e-book begins with a easy wisdom of Rake, permitting you to resolve repetitive initiatives. Then it offers you information regarding approaches played with records, that is the most important for knowing the appliance of the instrument. It contains demonstrations to teach you ways initiatives should be run in parallel and the way they are often utilized in perform. Thereafter, it integrates Rake with Ruby with the aid of uncomplicated and transparent examples. through the top of this booklet, you'll know the way Rake has replaced the programming global, particularly within the Ruby community.
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Additional info for Rake Task Management Essentials
The ensuing time could be the sum of the time sessions of the execution of every activity. during this instance, will probably be the subsequent: period of time 1 + period of time 2 + period of time three [ fifty nine ] Running projects in Parallel the subsequent is a determine that indicates us the sequential job execution: period of time 1 Taks1 period of time 2 Taks2 period of time three Taks3 Now, within the subsequent determine, one can find what's going after we outline the duty dependencies with the multitask technique. The task1 and task2 projects are achieved even as, so the ensuing time could be lesser: period of time 1 + period of time 2 right here, period of time 1 is a time period to execute either the projects (task1 and task2) in parallel. the next is a determine that indicates us the parallel job execution: period of time 1 Taks1 Taks2 period of time 2 Taks3 [ 60 ] Chapter five Thread security of multitasks Rake's inner facts constructions are thread-safe, so we do not have to do additional synchronization for the advantage of Rake. notwithstanding, if we've got shared variables or assets (for instance, the database or records) and the parallel projects are at the same time acting operations less than them, we needs to hinder race stipulations with extra attempt. essentially, this calls for utilizing extra instruments to synchronize the information. you've got already obvious the matter with the @a variable within the earlier instance. To do away with the matter, we need to ask the set_b activity to attend for the set_a job. even though, as we do not have public entry to their threads, we will not to do that, so that they cannot be accomplished in parallel. within the instance, multitasking is redundant and a sequential execution should be extra acceptable there; be cautious whilst utilizing multitasking due to this specific cause. regrettably, this booklet isn't meant to give an explanation for the multithreading topic and the way it really works in Ruby. To get additional info, please consult with http://goo. gl/GaeHgd. a number of activity definitions with a typical prerequisite think that we have got rake initiatives that experience a typical prerequisite and whilst, those initiatives are necessities for a multitask. Which order can we get for the duty execution after we run the multitask? you might imagine that the multitask's must haves can be run in parallel and the typical prerequisite will run as repeatedly because the variety of the multitask's must haves. in spite of the fact that, this isn't real; really, the multitask's necessities will wait till the typical prerequisite will get accomplished. hence, the typical prerequisite should be run just once. the subsequent instance will display the assumption basically: activity :copy_src => [:prepare_for_copy] do places 'In the #copy_src' finish job :copy_bin => [:prepare_for_copy] do places 'In the #copy_bin' finish activity :prepare_for_copy do places 'In the #prepare_for_copy' [ sixty one ] Running projects in Parallel finish multitask :all_copy => [:copy_src, :copy_bin] do places 'In the #all_copy' finish We get the next output because of the activity execution: $ rake all_copy within the #prepare_for_copy within the #copy_src within the #copy_bin within the #all_copy The copy_src and copy_bin initiatives have a typical prerequisite—the prepare_ for_copy job.