Module: Beaker::ModuleInstallHelper

Includes:
DSL
Defined in:
lib/beaker/module_install_helper.rb

Overview

Provides method for use in module test setup to install the module under test and it’s dependencies on the specified hosts

Instance Method Summary collapse

Instance Method Details

#forge_api ⇒ Object 



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# File 'lib/beaker/module_install_helper.rb', line 194

def forge_api
  fa = ENV['BEAKER_FORGE_API']
  unless fa.nil?
    fa = 'https://' + fa if fa !~ /^(https:\/\/|http:\/\/)/i
    fa += '/' unless fa != /\/$/
    return fa
  end

  'https://forgeapi.puppetlabs.com/'
end

#forge_host ⇒ Object 



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# File 'lib/beaker/module_install_helper.rb', line 183

def forge_host
  fh = ENV['BEAKER_FORGE_HOST']
  unless fh.nil?
    fh = 'https://' + fh if fh !~ /^(https:\/\/|http:\/\/)/i
    fh += '/' unless fh != /\/$/
    return fh
  end

  'https://forge.puppet.com/'
end

#get_module_source_directory(call_stack) ⇒ Object

Use this property to store the module_source_dir, so we don’t traverse the tree every time



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# File 'lib/beaker/module_install_helper.rb', line 161

def get_module_source_directory(call_stack)
  matching_caller = call_stack.select { |i| i =~ /(spec_helper_acceptance|_spec)/i }

  raise 'Error finding module source directory' if matching_caller.empty?

  matching_caller = matching_caller[0] if matching_caller.is_a?(Array)
  search_in = matching_caller[/[^:]+/]

  module_source_dir = nil
  # here we go up the file tree and search the directories for a
  # valid metadata.json
  while module_source_dir.nil? && search_in != File.dirname(search_in)
    # remove last segment (file or folder, doesn't matter)
    search_in = File.dirname(search_in)

    # Append metadata.json, check it exists in the directory we're searching
    metadata_path = File.join(search_in, 'metadata.json')
    module_source_dir = search_in if File.exist?(metadata_path)
  end
  module_source_dir
end

#hosts_to_install_module_on ⇒ Object

This method will return array of all masters. If no masters exist, it will return all agent nodes. If no nodes tagged master or agent exist, all nodes will be returned



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# File 'lib/beaker/module_install_helper.rb', line 131

def hosts_to_install_module_on
  masters = hosts_with_role(hosts, :master)
  return masters unless masters.empty?

  agents = hosts_with_role(hosts, :agent)
  return agents unless agents.empty?

  hosts
end

#install_module(opts = {}) ⇒ Object

This method calls the install_module_on method for each host which is a master, or if no master is present, on all agent nodes.



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# File 'lib/beaker/module_install_helper.rb', line 11

def install_module(opts = {})
  install_module_on(hosts_to_install_module_on, opts)
end

#install_module_dependencies(deps = nil) ⇒ Object

This method calls the install_module_dependencies_on method for each host which is a master, or if no master is present, on all agent nodes.



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# File 'lib/beaker/module_install_helper.rb', line 27

def install_module_dependencies(deps = nil)
  install_module_dependencies_on(hosts_to_install_module_on, deps)
end

#install_module_dependencies_on(hsts, deps = nil) ⇒ Object

This method will install the module under tests module dependencies on the specified host(s) from the dependencies list in metadata.json



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# File 'lib/beaker/module_install_helper.rb', line 33

def install_module_dependencies_on(hsts, deps = nil)
  hsts = [hsts] if hsts.is_a?(Hash)
  hsts = [hsts] unless hsts.respond_to?(:each)
  deps = deps.nil? ? module_dependencies_from_metadata : deps

  fh = ENV['BEAKER_FORGE_HOST']

  hsts.each do |host|
    deps.each do |dep|
      if fh.nil?
        install_puppet_module_via_pmt_on(host, dep)
      else
        with_forge_stubbed_on(host) do
          install_puppet_module_via_pmt_on(host, dep)
        end
      end
    end
  end
end

#install_module_from_forge(mod_name, ver_req) ⇒ Object 



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# File 'lib/beaker/module_install_helper.rb', line 53

def install_module_from_forge(mod_name, ver_req)
  install_module_from_forge_on(hosts_to_install_module_on, mod_name, ver_req)
end

#install_module_from_forge_on(hsts, mod_name, ver_req) ⇒ Object 



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# File 'lib/beaker/module_install_helper.rb', line 57

def install_module_from_forge_on(hsts, mod_name, ver_req)
  sub_mod_name = mod_name.sub('/', '-')
  dependency = {
    module_name: sub_mod_name,
    version: module_version_from_requirement(sub_mod_name, ver_req)
  }

  install_module_dependencies_on(hsts, [dependency])
end

#install_module_on(host, opts = {}) ⇒ Object

This method will install the module under test on the specified host(s) from the source on the local machine



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# File 'lib/beaker/module_install_helper.rb', line 17

def install_module_on(host, opts = {})
  opts = {
    source: $module_source_dir,
    module_name: module_name_from_metadata
  }.merge(opts)
  copy_module_to(host, opts)
end

#module_dependencies_from_metadata ⇒ Object

This method returns an array of dependencies from the metadata.json file in the format of an array of hashes, containing :module_name and optionally :version elements. If no dependencies are specified, empty array is returned



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# File 'lib/beaker/module_install_helper.rb', line 70

def module_dependencies_from_metadata
  metadata = module_metadata
  return [] unless metadata.key?('dependencies')

  dependencies = []
  metadata['dependencies'].each do |d|
    tmp = { module_name: d['name'].sub('/', '-') }

    if d.key?('version_requirement')
      tmp[:version] = module_version_from_requirement(tmp[:module_name],
                                                      d['version_requirement'])
    end
    dependencies.push(tmp)
  end

  dependencies
end

#module_metadata ⇒ Object

This method uses the module_source_directory path to read the metadata.json file into a json array



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# File 'lib/beaker/module_install_helper.rb', line 151

def module_metadata
  metadata_path = "#{$module_source_dir}/metadata.json"
  unless File.exist?(metadata_path)
    raise "Error loading metadata.json file from #{$module_source_dir}"
  end
  JSON.parse(File.read(metadata_path))
end

#module_name_from_metadata ⇒ Object

This method will read the ‘name’ attribute from metadata.json file and remove the first segment. E.g. puppetlabs-vcsrepo -> vcsrepo



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# File 'lib/beaker/module_install_helper.rb', line 143

def module_name_from_metadata
  res = get_module_name module_metadata['name']
  raise 'Error getting module name' unless res
  res[1]
end

#module_version_from_requirement(mod_name, vr_str) ⇒ Object

This method takes a module name and the version requirement string from the metadata.json file, containing either lower bounds of version or both lower and upper bounds. The function then uses the forge rest endpoint to find the most recent release of the given module matching the version requirement



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# File 'lib/beaker/module_install_helper.rb', line 92

def module_version_from_requirement(mod_name, vr_str)
  require 'net/http'
  uri = URI("#{forge_api}v3/modules/#{mod_name}")
  response = Net::HTTP.get(uri)
  forge_data = JSON.parse(response)

  vrs = version_requirements_from_string(vr_str)

  # Here we iterate the releases of the given module and pick the most recent
  # that matches to version requirement
  forge_data['releases'].each do |rel|
    return rel['version'] if vrs.all? { |vr| vr.match?('', rel['version']) }
  end

  raise "No release version found matching '#{vr_str}'"
end

#version_requirements_from_string(vr_str) ⇒ Object

This method takes a version requirement string as specified in the link below, with either simply a lower bound, or both lower and upper bounds and returns an array of Gem::Dependency objects docs.puppet.com/puppet/latest/modules_metadata.html



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# File 'lib/beaker/module_install_helper.rb', line 113

def version_requirements_from_string(vr_str)
  ops = vr_str.scan(/[(<|>|=)]{1,2}/i)
  vers = vr_str.scan(/[(0-9|\.)]+/i)

  raise 'Invalid version requirements' if ops.count != 0 &&
                                          ops.count != vers.count

  vrs = []
  ops.each_with_index do |op, index|
    vrs.push(Gem::Dependency.new('', "#{op} #{vers[index]}"))
  end

  vrs
end