Class: FPM::Fry::Detector::Image

Inherits:
Struct
  • Object
show all
Defined in:
lib/fpm/fry/detector.rb

Defined Under Namespace

Classes: ImageNotFound

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(client, image, factory = Container) ⇒ Image

Returns a new instance of Image.



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# File 'lib/fpm/fry/detector.rb', line 83

def initialize(client, image, factory = Container)
  super
end

Instance Attribute Details

#client ⇒ Object

Returns the value of attribute client

Returns:

  • (Object) —

    the current value of client



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# File 'lib/fpm/fry/detector.rb', line 75

def client
  @client
end

#distribution ⇒ Object (readonly)

Returns the value of attribute distribution.



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# File 'lib/fpm/fry/detector.rb', line 80

def distribution
  @distribution
end

#factory ⇒ Object

Returns the value of attribute factory

Returns:

  • (Object) —

    the current value of factory



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# File 'lib/fpm/fry/detector.rb', line 75

def factory
  @factory
end

#image ⇒ Object

Returns the value of attribute image

Returns:

  • (Object) —

    the current value of image



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# File 'lib/fpm/fry/detector.rb', line 75

def image
  @image
end

#version ⇒ Object (readonly)

Returns the value of attribute version.



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# File 'lib/fpm/fry/detector.rb', line 81

def version
  @version
end

Instance Method Details

#detect! ⇒ Object 



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# File 'lib/fpm/fry/detector.rb', line 87

def detect!
  body = JSON.generate({"Image" => image, "Cmd" => "exit 0"})
  begin
    res = client.post( path: client.url('containers','create'),
                       headers: {'Content-Type' => 'application/json'},
                       body: body,
                       expects: [201]
                     )
  rescue Excon::Errors::NotFound
    raise ImageNotFound, "Image #{image.inspect} not found. Did you do a `docker pull #{image}` before?"
  end
  body = JSON.parse(res.body)
  container = body.fetch('Id')
  begin
    d = factory.new(client,container)
    if d.detect!
      @distribution = d.distribution
      @version = d.version
      return true
    else
      return false
    end
  ensure
    client.delete(path: client.url('containers',container))
  end
end