Puppet yarn

A puppet module to install Yarn Package Manager.

Table of Contents

1. Module Description - What the module does and why it is useful
2. Setup - The basics of getting started with yarn
   • What yarn affects
   • Beginning with yarn
3. Usage - Configuration options and additional functionality
   • Installing an specific version of Node.js
   • Installing multiple versions of Node.js
   • Installing Node.js globally
   • Installing Node.js global npm packages
4. Reference - An under-the-hood peek at what the module is doing and how
   • Class: yarn
   • Define: yarn::node::install
5. Limitations - OS compatibility, etc.
6. Development - Guide for contributing to the module

Module Description

Yarn is a fast, reliable, and secure dependency manager for npm and bower. This Puppet module simplifies the task of installing it and supports package, npm or source installation.

Setup

What yarn affects

• It will install Yarn.
• It will install wget, tar and gzip packages if you choose the source installation method.

Node.js requirement: Yarn requires Node.js to be installed, but this module will not do it. You need to install Node.js by your own, you can use the puppet-nodejs to do it. Examples are provided with this module.

Beginning with yarn

To have Puppet install yarn with the default parameters, declare the yarn class:

class { 'yarn': }

The Puppet module applies a default configuration: installs yarn using the recommended methods, package for Debian and RedHat families and source for the rest. You can also use npm to install it. Use the Reference section to find information about the class's parameters and their default values.

You can customize parameters when declaring the yarn class. For instance, this declaration will install yarn using the npm method for the foo user:

class { 'yarn':
  user           => 'foo',
  install_method => 'npm',
}

Usage

Installing Yarn

This is the most common usage for yarn. It installs yarn with default parameters.

class { 'yarn': }

Installing Yarn on CentOS with Node.js

The following code require that you add the puppet-nodejs module also, but you can adapt it for any other module.

class { 'nodejs':
  repo_url_suffix => '6.x',
}

class { 'yarn': }

Package['nodejs'] -> Package['yarn']

if $::osfamily == 'RedHat' and $::operatingsystemrelease =~ /^5\.(\d+)/ {
  class { 'epel': }
  Class['epel'] -> Class['nodejs'] -> Class['yarn']
}

Installing Yarn on Ubuntu with Node.js

The following code require that you add the puppet-nodejs module also, but you can adapt it for any other module.

class { 'nodejs':
  repo_url_suffix => '6.x',
}

class { 'yarn': }

Package['nodejs'] -> Package['yarn']

Installing Yarn on other Linux distros with Node.js

The following code require that you add the puppet-nodejs module also, but you can adapt it for any other module.

class { 'nodejs':
  repo_url_suffix => '6.x',
}

class { 'yarn':
  manage_repo    => false,
  install_method => 'source',
  require        => Package['nodejs'],
}

Installing Yarn using npm with Node.js

The following code require that you add the puppet-nodejs module also, but you can adapt it for any other module.

class { 'nodejs':
  repo_url_suffix => '6.x',
}

class { 'yarn':
  manage_repo    => false,
  install_method => 'npm',
  require        => Class['nodejs'],
}

Remove Yarn

class { 'yarn':
  package_ensure => false,
}

Reference

Class: yarn

Guides the basic setup and installation of yarn on your system. It is the only public class.

When this class is declared with the default options, Puppet:

• Installs latest version of yarn.
• Uses package installation for Debian and RedHat families and source installation for the rest.

You can simply declare the default yarn class:

class { 'yarn': }

Parameters within yarn:

package_ensure

What state the package should be in. It will be passed to the ensure parameter when the package install method is used. If it is set to absent it will remove Yarn for all installation methods.

Default: present.

package_name

The package name. You can include the version also if you are using the npm installation method.

Default: yarn.

manage_repo

Allos the module to manage the Yarn repo.

Default: true for Debian and RedHat, false for the rest.

install_method

Sets the installation method. Allowed values: source, npm, package.

Default: package for Debian and RedHat, source for the rest.

• Ensures packages wget, tar and gzip when source method is used.

source_install_dir

The installation directory when source installation method is used.

Default: /opt.

symbolic_link

The path to create a symbolic link in order to make yarn available for all users.

Default: /usr/local/bin/yarn.

user

Sets the user for source and npm installation methods.

Default: root.

source_url

Url to download Yarn when source installation method is used.

Default: https://yarnpkg.com/latest.tar.gz.

Limitations

This module can not work on Windows and should work on LINUX systems.

This module is CI tested against open source Puppet on:

• CentOS 7
• Ubuntu 14.04
• Debian 7

This module should also work properly in other distributions and operating systems, such as FreeBSD, Gentoo, and Amazon Linux, but is not formally tested on them.

Report an issue if this module does not work properly in any Linux distro.

Development

Contributing

This modules is an open project, and community contributions are highly appreciated.

For more information, please read the complete module contribution guide.

Running tests

This project contains tests for both rspec-puppet and beaker-rspec to verify functionality. For detailed information on using these tools, please see their respective documentation.

This project contains tests for rspec-puppet to verify functionality. For detailed information on using these tools, please see their respective documentation.

Testing quickstart

gem install bundler
bundle install
bundle exec rake test
./spec/run_virtualbox_tests.sh # this will take a long time