Class: Prepd::Machine

Inherits:
Base
  • Object
show all
Includes:
Component
Defined in:
lib/prepd/models/machine.rb

Constant Summary collapse

WORK_DIR = 
'machines'
USER_CONFIG_FILE = 
'build.yml'
VALID_BUMP_NAMES = 
%w(major minor patch)

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Component

#component_dir, #component_directory_does_not_exist, #component_root, #files_dir, #in_component_dir, #in_component_root, #in_workspace_root, #klass_name, #workspace_root

Methods inherited from Base

#create

Instance Attribute Details

#bump ⇒ Object

Returns the value of attribute bump.



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# File 'lib/prepd/models/machine.rb', line 13

def bump
  @bump
end

Instance Method Details

#action_file ⇒ Object 



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# File 'lib/prepd/models/machine.rb', line 57

def action_file
  return "#{Prepd.files_dir}/machine/#{build_action}.json" unless build_action.eql?(:iso)
  "#{Prepd.files_dir}/machine/#{os_env['base_dir']}/iso.json"
end

#base_dir ⇒ Object

Derive values for image and box



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# File 'lib/prepd/models/machine.rb', line 83

def base_dir; os_env['base_dir'] end

#box_json_file ⇒ Object 



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# File 'lib/prepd/models/machine.rb', line 89

def box_json_file; "#{build_box_dir}/#{build_image_name}.json" end

#box_version ⇒ Object

Calculate the next box version



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# File 'lib/prepd/models/machine.rb', line 129

def box_version
  return '0.0.1' unless File.exists?(box_json_file)
  json = JSON.parse(File.read(box_json_file))
  current_version = json['versions'].first['version']
  return current_version if build_action.eql?(:push)
  inc(current_version, type: bump)
end

#build ⇒ Object 



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# File 'lib/prepd/models/machine.rb', line 62

def build
  yml['images'][name]
end

#build_action ⇒ Object

Caclulate the packer builder to run: :iso, :build, :rebuild or :push



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# File 'lib/prepd/models/machine.rb', line 94

def build_action
  return :push if Prepd.config.push
  return :rebuild if File.exists?("#{build_image_dir}/#{build_image_name}-disk1.vmdk")
  build['source'].has_key?('os_image') ? :iso : :build
end

#build_box_dir ⇒ Object

def build_box_dir; “#Dir.pwd/#'name'/boxes” end



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# File 'lib/prepd/models/machine.rb', line 88

def build_box_dir; "#{Dir.pwd}/boxes" end

#build_env ⇒ Object

Setup env vars for the builder



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# File 'lib/prepd/models/machine.rb', line 103

def build_env
  xbuild_env = {
    'VM_BASE_NAME' => os_env['base_name'],
    'VM_INPUT' => build_action.eql?(:build) ? build['source']['image'] : name,
    'VM_OUTPUT' => name,
    'BOX_NAMESPACE' => yml['name'],
    'BOX_VERSION' => box_version,
    'PLAYBOOK_FILE' => build['provisioner'],
    'JSON_RB_FILE' => "#{Prepd.files_dir}/machine/json.rb"
  }

  xbuild_env.merge!({
    'ISO_CHECKSUM' => os_env['iso_checksum'],
    'ISO_URL' => os_env['iso_url']
  }) if build_action.eql?(:iso)

  xbuild_env.merge!({
    'AWS_PROFILE' => yml['aws']['profile'],
    'S3_BUCKET' => yml['aws']['s3_bucket'],
    'S3_REGION' => yml['aws']['s3_region'],
    'S3_BOX_DIR' => "#{yml['aws']['box_dir']}/#{yml['namesapce']}"
  }) if build_action.eql?(:push)
  xbuild_env
end

#build_image_dir ⇒ Object

def build_image_dir; “#'name'/images/#name” end



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# File 'lib/prepd/models/machine.rb', line 85

def build_image_dir; "images/#{name}" end

#build_image_name ⇒ Object 



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# File 'lib/prepd/models/machine.rb', line 86

def build_image_name; "#{os_env['base_name']}-#{name}" end

#inc(version, type: 'patch') ⇒ Object 



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# File 'lib/prepd/models/machine.rb', line 137

def inc(version, type: 'patch')
  idx = { 'major' => 0, 'minor' => 1, 'patch' => 2 }
  ver = version.split('.')
  ver[idx['patch']] = 0 if %w(major minor).include? type
  ver[idx['minor']] = 0 if %w(major).include? type
  ver[idx[type]] = ver[idx[type]].to_i + 1
  ver.join('.')
end

#name_included_in_yaml ⇒ Object 



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# File 'lib/prepd/models/machine.rb', line 26

def name_included_in_yaml
  return if valid_build_names.include? name
  errors.add(:invalid_name, "valid names are #{valid_build_names.join(', ')}")
end

#os_build ⇒ Object

Get references to current build, the os build and the os env



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# File 'lib/prepd/models/machine.rb', line 67

def os_build
  os_build = build
  loop do
    break if os_build['source'].has_key?('os_image')
    os_build = yml['images'][os_build['source']['image']]
  end
  os_build
end

#os_env ⇒ Object 



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# File 'lib/prepd/models/machine.rb', line 76

def os_env
  yml['os_images'][os_build['source']['os_image']]
end

#perform ⇒ Object

Execute the builder



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# File 'lib/prepd/models/machine.rb', line 46

def perform
  # return "#{build_action}\n#{build_env}" if Prepd.config.no_op
  in_component_root do
    # binding.pry
    # TODO: remove the preseed copy when running packer command from the gem directory
    FileUtils.cp("#{Prepd.files_dir}/machine/#{os_env['base_dir']}/preseed.cfg", '.')
    system(build_env, "packer build #{action_file}")
    FileUtils.rm('preseed.cfg')
  end
end

#set_defaults ⇒ Object 



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# File 'lib/prepd/models/machine.rb', line 22

def set_defaults
  self.bump ||= Prepd.config.bump || 'patch'
end

#valid_build_names ⇒ Object 



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# File 'lib/prepd/models/machine.rb', line 31

def valid_build_names
  yml['images'].keys
end

#yml ⇒ Object 



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# File 'lib/prepd/models/machine.rb', line 35

def yml
  return @yml if @yml
  in_component_root do
    @yml = YAML.load(ERB.new(File.read("#{workspace_root}/prepd-workspace.yml")).result(binding)).merge(
      YAML.load(ERB.new(File.read("#{component_root}/#{USER_CONFIG_FILE}")).result(binding)))
  end
end