Class: Cult::Provider

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/cult/provider.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(project, path) ⇒ Provider

Returns a new instance of Provider.



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# File 'lib/cult/provider.rb', line 13

def initialize(project, path)
  @project = project
  @path = path
end

Instance Attribute Details

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/cult/provider.rb', line 10

def path
  @path
end

#project ⇒ Object (readonly)

Returns the value of attribute project.



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# File 'lib/cult/provider.rb', line 9

def project
  @project
end

Class Method Details

.all(project) ⇒ Object 



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# File 'lib/cult/provider.rb', line 127

def self.all(project)
  all_files(project).map do |filename|
    new(project, filename)
  end.to_named_array
end

.all_files(project) ⇒ Object 



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# File 'lib/cult/provider.rb', line 120

def self.all_files(project)
  Dir.glob(File.join(path(project), "*")).select do |file|
    Dir.exist?(file)
  end
end

.generate_defaults(definition) ⇒ Object

Chooses the smallest size setup with Ubuntu > Debian > Redhat, and a random zone.



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# File 'lib/cult/provider.rb', line 63

def self.generate_defaults(definition)
  definition = JSON.parse(definition.to_json)
  text_to_mb = ->(text) {
    multipliers = {
      mb: 1 ** 1,
      gb: 1 ** 2,
      tb: 1 ** 3,
      pb: 1 ** 4
    }
    if (m = text.match(/(\d+)([mgtp]b)/))
      base = m[1].to_i
      mul = multipliers.fetch(m[2].to_sym)
      base * mul
    else
      nil
    end
  }

  conf = definition['configurations']

  # select the smallest size
  size = conf['sizes'].map do |size|
    if mb = text_to_mb.(size)
      [mb, size]
    else
      nil
    end
  end.compact.sort_by(&:first).last.last

  image = conf['images'].sort_by do |i|
    case i
      when /ubuntu-(\d+)-(\d+)/;
        10000 + ($1.to_i * 100) + ($2.to_i * 10)
      when /debian-(\d+)/
        9000 + ($1.to_i * 100)
      when /(redhat|centos|fedora)-(\d+)/
        8000 + ($2.to_i * 100)
      else
        1
    end
  end.last

  zone = conf['zones'].sample

  {
    default_size:  size,
    default_zone:  zone,
    default_image: image
  }
end

.path(project) ⇒ Object 



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# File 'lib/cult/provider.rb', line 115

def self.path(project)
  project.location_of("providers")
end

Instance Method Details

#definition ⇒ Object 



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# File 'lib/cult/provider.rb', line 40

def definition
  @definition ||= Definition.new(self)
end

#definition_parameters ⇒ Object 



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# File 'lib/cult/provider.rb', line 52

def definition_parameters
  { project: self.project }
end

#definition_parents ⇒ Object 



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# File 'lib/cult/provider.rb', line 56

def definition_parents
  []
end

#definition_path ⇒ Object 



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# File 'lib/cult/provider.rb', line 45

def definition_path
  [ File.join(path, "extra.json"),
    File.join(path, "defaults.json"),
    File.join(path, "provider.json") ]
end

#driver ⇒ Object 



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# File 'lib/cult/provider.rb', line 32

def driver
  @driver ||= begin
    cls = project.drivers[definition['driver']]
    cls.new(api_key: definition['api_key'])
  end
end

#inspect ⇒ Object 



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# File 'lib/cult/provider.rb', line 24

def inspect
  prelude = "#{self.class.name} \"#{name}\""
  driver_name = driver.class.driver_name
  driver_string = (driver_name == name) ? '' : " driver=\"#{driver_name}\""
  "\#<#{prelude}#{driver_string}>"
end

#name ⇒ Object 



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# File 'lib/cult/provider.rb', line 19

def name
  File.basename(path)
end