Class: Lono::Configset::Loader

Inherits:
Object
  • Object
show all
Extended by:
Memoist
Includes:
EvaluateFile, Dsl
Defined in:
lib/lono/configset/loader.rb,
lib/lono/configset/loader/dsl.rb

Direct Known Subclasses

Blueprint::Configset::Loader

Defined Under Namespace

Modules: Dsl

Instance Method Summary collapse

Methods included from EvaluateFile

#evaluate_file

Methods included from Dsl

#indent

Constructor Details

#initialize(registry = {}, options = {}) ⇒ Loader

Returns a new instance of Loader.



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# File 'lib/lono/configset/loader.rb', line 9

def initialize(registry={}, options={})
  @registry, @options = registry, options
  @name, @resource = registry.name, registry.resource
  @blueprint = Lono::Conventions.new(options).blueprint
end

Instance Method Details

#configset_root ⇒ Object 



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# File 'lib/lono/configset/loader.rb', line 45

def configset_root
  config = finder_class.find(@name)
  unless config
    puts "finder_class #{finder_class}"
    raise "Unable to find configset #{@name.inspect}"
  end
  config.root
end

#copy_instance_variables ⇒ Object 



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# File 'lib/lono/configset/loader.rb', line 59

def copy_instance_variables
  load_blueprint_predefined_variables
  load_project_predefined_variables
  load_inline_project_variables
end

#find_path ⇒ Object 



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# File 'lib/lono/configset/loader.rb', line 40

def find_path
  paths = %w[configset.yml configset.json].map { |p| "#{configset_root}/lib/#{p}" }
  paths.find { |p| File.exist?(p) }
end

#finder_class ⇒ Object

Allow overriding in subclasses



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# File 'lib/lono/configset/loader.rb', line 55

def finder_class
  Lono::Finder::Configset
end

#load ⇒ Object 



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# File 'lib/lono/configset/loader.rb', line 19

def load
  path = find_path
  copy_instance_variables
  content = RenderMePretty.result(path, context: self)
  if File.extname(path) == ".yml"
    load_yaml(content)
  else
    JSON.load(content)
  end
end

#load_blueprint_predefined_variables ⇒ Object 



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# File 'lib/lono/configset/loader.rb', line 65

def load_blueprint_predefined_variables
  path = "#{configset_root}/lib/variables.rb"
  evaluate_file(path)
end

#load_inline_project_variables ⇒ Object

Copy options from the original configset call as instance variables so its available. So:

configset("ssm", resource: "Instance", some_var: "test")

Stores in the Configset::Registry

register = {name: "ssm", resource: "Instance", some_var: "test"}

That has is passed into Loader.new(register, options)

So these @registry varibles are copied over to instance variables.



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# File 'lib/lono/configset/loader.rb', line 92

def load_inline_project_variables
  @registry.vars.each do |k,v|
    instance_variable_set("@#{k}", v)
  end
end

#load_project_predefined_variables ⇒ Object 



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# File 'lib/lono/configset/loader.rb', line 70

def load_project_predefined_variables
  paths = [
    "#{Lono.root}/configs/#{@blueprint}/configsets/variables.rb", # global
    "#{Lono.root}/configs/#{@blueprint}/configsets/#{@name}/variables.rb", # configset specific
  ]
  paths.each do |path|
    evaluate_file(path)
  end
end

#load_yaml(content) ⇒ Object 



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# File 'lib/lono/configset/loader.rb', line 31

def load_yaml(content)
  # Write to file so can use Yamler::Validator
  path = "/tmp/lono/configset.yml"
  FileUtils.mkdir_p(File.dirname(path))
  IO.write(path, content)
  Lono::Yamler::Validator.new(path).validate!
  Lono::Yamler::Loader.new(content).load
end

#metdata_configset ⇒ Object 



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# File 'lib/lono/configset/loader.rb', line 15

def metdata_configset
  load
end