Class: Kuby::Docker::LayerStack

Inherits:
Object
  • Object
show all
Extended by:
T::Generic, T::Sig
Includes:
Enumerable
Defined in:
lib/kuby/docker/layer_stack.rb

Constant Summary collapse

Elem = 
type_member(fixed: Layer)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ LayerStack

Returns a new instance of LayerStack.



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# File 'lib/kuby/docker/layer_stack.rb', line 20

def initialize
  @stack = T.let([], T::Array[Symbol])
  @layers = T.let({}, T::Hash[Symbol, Layer])
end

Instance Attribute Details

#layers ⇒ Object (readonly)

Returns the value of attribute layers.



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# File 'lib/kuby/docker/layer_stack.rb', line 17

def layers
  @layers
end

#stack ⇒ Object (readonly)

Returns the value of attribute stack.



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# File 'lib/kuby/docker/layer_stack.rb', line 14

def stack
  @stack
end

Instance Method Details

#delete(name) ⇒ Object 



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# File 'lib/kuby/docker/layer_stack.rb', line 98

def delete(name)
  stack.delete(name)
  layers.delete(name)
end

#each(&block) ⇒ Object 



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# File 'lib/kuby/docker/layer_stack.rb', line 31

def each(&block)
  return to_enum(T.must(__method__)) unless block_given?
  @stack.each { |name| yield T.must(layers[name]) }
end

#includes?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/kuby/docker/layer_stack.rb', line 104

def includes?(name)
  layers.include?(name)
end

#insert(name, layer = nil, options = {}, &block) ⇒ Object 



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# File 'lib/kuby/docker/layer_stack.rb', line 65

def insert(name, layer = nil, options = {}, &block)
  # this is truly gross but it's the only way I can think of to be able
  # to call insert these two ways:
  #
  # insert :foo, FooLayer.new, before: :bundler_phase
  # insert :foo, before: :bundler_phase do
  #   ...
  # end
  if layer.is_a?(Hash)
    insert(name, nil, options.merge(layer), &block)
    return
  end

  existing_name = options[:before] || options[:after]
  idx = stack.index(existing_name)

  unless idx
    raise ArgumentError, "Could not find existing layer '#{existing_name}'"
  end

  idx += 1 if options[:after]
  stack.insert(idx, name)

  if layer
    layers[name] = layer
  elsif block_given?
    layers[name] = InlineLayer.new(block)
  else
    raise "Must either pass a layer object or a block to `#{__method__}'"
  end
end

#use(name, layer = nil, &block) ⇒ Object 



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# File 'lib/kuby/docker/layer_stack.rb', line 44

def use(name, layer = nil, &block)
  stack << name

  if layer
    layers[name] = layer
  elsif block_given?
    layers[name] = InlineLayer.new(block)
  else
    raise "Must either pass a layer object or a block to `#{__method__}'"
  end
end