Class: Terrafying::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/terrafying/generator.rb

Direct Known Subclasses

RootContext

Constant Summary collapse

REGION = 
ENV.fetch("AWS_REGION", "eu-west-1")
PROVIDER_DEFAULTS = 
{
  aws: { region: REGION }
}

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Context

Returns a new instance of Context.



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# File 'lib/terrafying/generator.rb', line 183

def initialize
  @output = {
    "resource" => {}
  }
  @children = []
end

Instance Attribute Details

#output ⇒ Object (readonly)

Returns the value of attribute output.



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# File 'lib/terrafying/generator.rb', line 181

def output
  @output
end

Class Method Details

.bundle(&block) ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 175

def self.bundle(&block)
  ctx = Context.new
  ctx.instance_eval(&block)
  ctx
end

Instance Method Details

#add!(*c) ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 288

def add!(*c)
  @children.push(*c)
  c[0]
end

#aws ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 190

def aws
  @@aws ||= Terrafying::Aws::Ops.new REGION
end

#data(type, name, spec) ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 225

def data(type, name, spec)
  @output["data"] ||= {}
  @output["data"][type.to_s] ||= {}

  raise "Data already exists #{type.to_s}.#{name.to_s}" if @output["data"][type.to_s].has_key? name.to_s
  @output["data"][type.to_s][name.to_s] = spec
  RootRef.new(kind: :data, type: type, name: name)
end

#id_of(type, name) ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 254

def id_of(type,name)
  output_of(type, name, "id")
end

#key_exists_spec_differs(key, name, spec) ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 203

def key_exists_spec_differs(key, name, spec)
  @providers.key?(key) && spec != @providers[key][name.to_s]
end

#local(name, value) ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 207

def local(name, value)
  @output["locals"] ||= {}

  raise "Local already exists #{name.to_s}" if @output["locals"].has_key? name.to_s

  @output["locals"][name.to_s] = value
  RootRef.new(kind: :local, name: name)
end

#output_of(type, name, key) ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 258

def output_of(type, name, key)
  RootRef.new(kind: :resource, type: type, name: name)[key]
end

#output_with_children ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 250

def output_with_children
  @children.inject(@output) { |out, c| out.deep_merge(c.output_with_children) }
end

#pretty_generate ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 262

def pretty_generate
  JSON.pretty_generate(output_with_children)
end

#provider(name, spec) ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 194

def provider(name, spec)
  key = [name, spec[:alias]].compact.join('.')
  @providers ||= {}
  raise "Duplicate provider configuration detected for #{key}" if key_exists_spec_differs(key, name, spec)
  @providers[key] = { name.to_s => spec }
  @output['provider'] = @providers.values
  key
end

#resource(type, name, attributes) ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 234

def resource(type, name, attributes)
  @output["resource"][type.to_s] ||= {}

  raise "Resource already exists #{type.to_s}.#{name.to_s}" if @output["resource"][type.to_s].has_key? name.to_s
  @output["resource"][type.to_s][name.to_s] = attributes
  RootRef.new(kind: :resource, type: type, name: name)
end

#resource_names ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 266

def resource_names
  out = output_with_children
  ret = []
  for type in out["resource"].keys
    for id in out["resource"][type].keys
      ret << "#{type}.#{id}"
    end
  end
  ret
end

#resources ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 277

def resources
  out = output_with_children
  ret = []
  for type in out["resource"].keys
    for id in out["resource"][type].keys
      ret << "${#{type}.#{id}.id}"
    end
  end
  ret
end

#template(relative_path, params = {}) ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 242

def template(relative_path, params = {})
  dir = caller_locations[0].path
  filename = File.join(File.dirname(dir), relative_path)
  erb = ERB.new(IO.read(filename))
  erb.filename = filename
  erb.result(OpenStruct.new(params).instance_eval { binding })
end

#tf_safe(str) ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 293

def tf_safe(str)
  str.gsub(/[\.\s\/\?]/, "-")
end

#var(name, spec) ⇒ Object 



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# File 'lib/terrafying/generator.rb', line 216

def var(name, spec)
  @output["variable"] ||= {}

  raise "Var already exists #{name.to_s}" if @output["variable"].has_key? name.to_s

  @output["variable"][name.to_s] = spec
  RootRef.new(kind: :var, name: name)
end