Class: Lono::Template::Dsl::Builder

Inherits:
Object
  • Object
show all
Extended by:
Memoist
Includes:
Context::Loader, Fn, Syntax, Evaluate, Helper, Util
Defined in:
lib/lono/template/dsl/builder/helper.rb,
lib/lono/template/dsl/builder.rb,
lib/lono/template/dsl/builder/fn.rb,
lib/lono/template/dsl/builder/base.rb,
lib/lono/template/dsl/builder/output.rb,
lib/lono/template/dsl/builder/syntax.rb,
lib/lono/template/dsl/builder/mapping.rb,
lib/lono/template/dsl/builder/section.rb,
lib/lono/template/dsl/builder/resource.rb,
lib/lono/template/dsl/builder/condition.rb,
lib/lono/template/dsl/builder/parameter.rb

Overview

Implements:

template - uses @definition to build a CloudFormation template section

Defined Under Namespace

Modules: Fn, Helper, Syntax Classes: Base, Condition, Mapping, Output, Parameter, Resource, Section

Constant Summary

Constants included from Fn

Fn::FUNCTIONS

Instance Method Summary collapse

Methods included from Syntax

#aws_template_format_version, #condition, #description, #mapping, #metadata, #output, #parameter, #resource, #section, #transform

Methods included from Evaluate

#evaluate_template_path, #template_evaluation_error

Methods included from Helper

#current_region, #extract_scripts, #indent, #partial, #partial_exist?, #scripts_name, #scripts_s3_path, #template_params, #template_s3_path, #user_data

Methods included from Fn

#fn, #fn_id, #get_att, #get_azs, included, #join, #ref, #sub

Methods included from Util

#ensure_parent_dir, #handle_yaml_syntax_error, #validate_yaml

Constructor Details

#initialize(path, blueprint, options = {}) ⇒ Builder

Returns a new instance of Builder.



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# File 'lib/lono/template/dsl/builder.rb', line 12

def initialize(path, blueprint, options={})
  @path, @blueprint, @options = path, blueprint, options
  @template = @path.sub("#{Lono.config.templates_path}/",'').sub(/\.rb$/,'')
  @cfn = {}
end

Instance Method Details

#build ⇒ Object 



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# File 'lib/lono/template/dsl/builder.rb', line 18

def build
  load_context
  evaluate_template_path(@path) # modifies @cfn
  build_template
  write_output
  template
end

#build_template ⇒ Object 



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# File 'lib/lono/template/dsl/builder.rb', line 34

def build_template
  @results = YAML.dump(camelize(@cfn))
end

#camelize(data) ⇒ Object 



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# File 'lib/lono/template/dsl/builder.rb', line 54

def camelize(data)
  CfnCamelizer.transform(data)
end

#load_context ⇒ Object

Not using Lono::Template::Context because that works differently. That is used to load a context object that is passed to RenderMePretty’s context. So that we can load context for params files and erb templates.

In this case builder is actually the dsl context. We want to load variables and helpers into this builder context directly. This loads additional context. It looks very similar to Lono::Template::Context



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# File 'lib/lono/template/dsl/builder.rb', line 65

def load_context
  load_variables
  load_project_helpers
end

#template ⇒ Object

Useful for lono seed to get the template in memory



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# File 'lib/lono/template/dsl/builder.rb', line 27

def template
  load_context
  evaluate_template_path(@path) # modifies @cfn
  camelize(@cfn)
end

#write_output ⇒ Object 



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# File 'lib/lono/template/dsl/builder.rb', line 38

def write_output
  output_path = "#{Lono.config.output_path}/#{@blueprint}/templates"
  FileUtils.mkdir_p(output_path)

  path = "#{output_path}/#{@template}.yml"
  ensure_parent_dir(path)
  IO.write(path, @results)

  validate_yaml(path)

  unless @options[:quiet]
    pretty_path = path.sub("#{Lono.root}/",'')
    puts "  #{pretty_path}"
  end
end