Class: SimplyGenius::Atmos::Commands::Generate

Inherits:
BaseCommand
  • Object
show all
Defined in:
lib/simplygenius/atmos/commands/generate.rb

Overview

From github.com/rubber/rubber/blob/master/lib/rubber/commands/vulcanize.rb

Direct Known Subclasses

New

Class Method Summary collapse

Instance Method Summary collapse

Methods included from UI

#agree, #ask, #choose, color_enabled, color_enabled=, #display, #error, #notify, #say, #warn

Class Method Details

.description ⇒ Object 



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# File 'lib/simplygenius/atmos/commands/generate.rb', line 13

def self.description
  <<~EOF
    Installs configuration templates used by atmos to create infrastructure
    resources e.g.
    
      atmos generate aws/vpc
    
    use --list to get a list of the template names for a given sourceroot
  EOF
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/simplygenius/atmos/commands/generate.rb', line 49

def execute
  signal_usage_error "template name is required" if template_list.blank? && ! list? && !update?

  sourcepath_list.each do |sp|
    SourcePath.register(File.basename(sp), sp)
  end

  if sourcepaths?

    # don't want to fail for new repo
    if  Atmos.config && Atmos.config.is_atmos_repo?
      Atmos.config['atmos.template_sources'].try(:each) do |item|
        SourcePath.register(item.name, item.location)
      end
    end

    # Always search for templates against the bundled templates directory
    SourcePath.register('bundled', File.expand_path('../../../../../templates', __FILE__))

  end

  if list?
    logger.info "Valid templates are:"
    SourcePath.registry.each do |spname, sp|
      logger.info("\tSourcepath #{sp}")
      filtered_names = sp.template_names.select do |name|
        template_list.blank? || template_list.any? {|f| name =~ /#{f}/ }
      end
      filtered_names.each {|n| logger.info ("\t\t#{n}")}
    end
  else
    g = Generator.new(force: force?,
                         pretend: dryrun?,
                         quiet: quiet?,
                         skip: skip?,
                         dependencies: dependencies?)

    begin

      context = SettingsHash.new
      context_list.each do |c|
        key, value = c.split('=', 2)
        context.notation_put(key, value)
      end

      if update?
        # this isn't 100% foolproof, but is a convenience that should help for most cases

        filtered_templates = state[:visited_templates].select do |vt|
          template_list.blank? || template_list.any? {|n| vt[:name] =~ /#{n}/ }
        end

        sps = filtered_templates.collect(&:source).uniq
        sps.each do |src|
          spname = src[:name]
          sploc = src[:location]

          existing_sp = SourcePath.registry[spname]
          if existing_sp
            if existing_sp.location != sploc
              logger.warn("Saved sourcepath location differs from that in configuration")
              logger.warn(" #{spname} -> saved=#{sploc} configured=#{existing_sp.location}")
              logger.warn(" consider running with --no-sourcepaths")
            end
          else
            sp = SourcePath.register(spname, sploc)
            logger.warn("Saved state contains a source path missing from configuration: #{sp}")
          end
        end

        filtered_templates.each do |vt|
          name = vt[:name]
          ctx = vt[:context]
          spname = vt[:source][:name]
          sp = SourcePath.registry[spname]
          tmpl = sp.template(name)
          tmpl.scoped_context.merge!(ctx) if ctx
          tmpl.context.merge!(context)
          g.apply_template(tmpl)
        end
      else
        g.generate(*template_list, context: context)
      end

      save_state(g.visited_templates, template_list)

    rescue  ArgumentError => e
      logger.error(e.message)
      exit 1
    end
  end

end

#save_state(visited_templates, entrypoint_template_names) ⇒ Object 



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# File 'lib/simplygenius/atmos/commands/generate.rb', line 162

def save_state(visited_templates, entrypoint_template_names)
  if state_file.present?
    visited_state = []
    visited_templates.each do |tmpl|
      visited_tmpl = tmpl.to_h
      visited_tmpl[:context] = tmpl.scoped_context.to_h
      visited_state << visited_tmpl
    end

    state[:visited_templates] ||= []
    state[:visited_templates].concat(visited_state)
    state[:visited_templates].sort! {|h1, h2| h1[:name] <=> h2[:name] }.uniq!

    state[:entrypoint_templates] ||= []
    state[:entrypoint_templates].concat(entrypoint_template_names)
    state[:entrypoint_templates].sort!.uniq!

    File.write(state_file, YAML.dump(state.to_hash))
  end
end

#state ⇒ Object 



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# File 'lib/simplygenius/atmos/commands/generate.rb', line 147

def state
  @state ||= begin
    if state_file.present?
      path = File.expand_path(state_file)
      yml_hash = {}
      if File.exist?(path)
        yml_hash = YAML.load_file(path)
      end
      SettingsHash.new(yml_hash)
    else
      SettingsHash.new
    end
  end
end

#state_file ⇒ Object 



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# File 'lib/simplygenius/atmos/commands/generate.rb', line 143

def state_file
  @state_file ||= Atmos.config["atmos.generate.state_file"]
end