Module: Aws::Cfn::Compiler::Parse

Included in:
Base
Defined in:
lib/aws/cfn/compiler/mixins/parse.rb

Instance Method Summary collapse

Instance Method Details

#parseObject


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# File 'lib/aws/cfn/compiler/mixins/parse.rb', line 12

def parse
  parse_meta(@spec)
  @dsl ||= Aws::Cfn::Dsl::Template.new(@config[:directory])
  @all_sections.each do |section|
    parse_section(section,@spec)
  end
end

#parse_meta(spec) ⇒ Object


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# File 'lib/aws/cfn/compiler/mixins/parse.rb', line 20

def parse_meta(spec)
  begin
    reqs = meta(:Require)
    if reqs
      reqs.each do |name,args|
        requirement(name,args)
      end
    end
  rescue Exception => e
    abort! e
  end
end

#parse_rb_file(base, section, filename) ⇒ Object


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# File 'lib/aws/cfn/compiler/mixins/parse.rb', line 180

def parse_rb_file(base, section, filename)
  Aws::Cfn::Compiler.binding                ||= {}
  Aws::Cfn::Compiler.binding[section]       ||= {}
  Aws::Cfn::Compiler.binding[section][base] ||= {
      :brick_path      => @config[:brick_path],
      :brick_path_list => @config[:brick_path_list],
      :template        => @dsl,
      :logger          => @logger,
      :compiler        => self
  }
  source_file = File.expand_path(filename)
  begin
    eval 'require source_file', binding
  rescue Exception => e
    abort! "Cannot compile #{source_file}\n\n" + e.message + "\n\n" + e.backtrace.to_s
  end
  unless @dsl.dict[section.to_sym]
    abort! "Unable to compile/expand #{filename} for #{section}/#{base}.\n(No #{section} were created?!)"
  end
  dict = sym_to_s(@dsl.dict)
  @dsl = Aws::Cfn::Dsl::Template.new(@config[:directory])
  dict
end

#parse_section(section, spec = nil) ⇒ Object

noinspection RubyGlobalVariableNamingConvention


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# File 'lib/aws/cfn/compiler/mixins/parse.rb', line 76

def parse_section(section,spec=nil)
  logStep "Parsing #{section}..."

  if spec and spec[section]
    @items          ||= {}
    @items[section] ||= {}
    @dynamic_items[section] ||= {}
    get  = {}
    spec[section].each do |rsrc|
      item = {}
      item[section] ||= {}
      @logger.debug "\tUsing #{section}::#{rsrc}"
      refp,sub,base,rel = map_resource_reference(rsrc)
      if refp.nil?
        path = get_brick_dirname(section, rsrc)
      else
        path = get_brick_dirname(sub ? sub : section, rsrc, refp, rel)
      end
      abort! "No such directory: #{path} (I am here: #{Dir.pwd})" unless File.directory?(path)
      unless get[path]
        get[path] = get_file_set([".*"], path, @config[:precedence])
      end
      set = get[path]
      if set[base]
        if item[section].has_key?(base)
          @logger.error "  !! error: Duplicate item: #{section}/#{base}"
          abort!
        end

        filename = set[base]
        unless filename =~ /\.(ru?by?|ya?ml|js(|on))\z/i
          @logger.info "Brick not supported/ relevant: #{filename}"
          next
        end

        begin
          @logger.debug "  reading #{filename}"
          content = File.read(filename)
          next if content.size==0

          if filename =~ /\.(rb|ruby)\z/i
            # Ruby bricks can now define resources across section boundaries!
            item = parse_rb_file(base, section, filename)
          elsif filename =~ /\.js(|on)\z/i
            item[section].merge! JSON.parse(content)
          elsif filename =~ /\.ya?ml\z/i
            begin
              item[section].merge! YAML.load(content) # item[section].merge! YAML.safe_load(content) #
            rescue => e
              logger.fatal "YAML error: #{e.message} in #{section}::#{rsrc}"
              raise e
            end
          else
            next
          end

          unless item[section].has_key?(base)
            filn = if @config[:expandedpaths]
                     filename
                   else
                     short_path(filename,2)
                   end
            @logger.error "  !! error: Brick in #{filn} does not define #{section}/#{base}!?\nIt defines these: #{item[section].keys}"
            abort!
          end
        rescue
          abort! "  !! error: #{$!} in #{section}::#{rsrc}"
        end
        item.each { |sect,hash|
          hash.keys.each do |key|
            if @items.has_key?(sect)
              if @items[sect].has_key?(key)
                abort! "  !! error: Duplicate item: #{sect}/#{key}"
              end
            else
              @items[sect] ||= {}
            end
          end
          @items[sect].merge! hash
        }
      else
        pm = []
        set.map { |r,f|
          b = File.basename(f).gsub( %r(\..*?$), '' )
          pm << b if b.downcase == rsrc.downcase
        }
        abort! "  !! error: #{section}/#{base} not found! Possible matches: #{pm}"
      end
    end

    unless @items[section].keys.count == (spec[section].count + @dynamic_items[section].keys.count)
      @logger.error "#{section} section check failed! \nRequested: #{spec[section]}\n    Found: #{@items[section].keys}\n  Dynamic: #{@dynamic_items[section].keys}\n"+
                    "  !! Suspect that a #{section} item was missed, duplicated or not properly named (Brick name and file name mismatch?)!"
      @dynamic_items[section].each do |k,_|
        if @items.has_key?(k)
          @logger.error "Dynamic #{section}/#{k} duplicates a static resource!"
        end
      end
      abort! 'Cannot continue'
    end
  end

end

#requirement(name, *args) ⇒ Object


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# File 'lib/aws/cfn/compiler/mixins/parse.rb', line 33

def requirement(name, *args)

  #options = args.last.is_a?(Hash) ? args.pop.dup : {}
  constraint = case args.class.name
                 when /Array/
                   args.shift
                 when /Symbol/
                   args.to_s
                 when /String/
                   args
                 else
                   raise "Unsupported class #{args.class.name} for #{args.ai}"
               end
  version,constraint = case name
    when /Compiler/
      [Aws::Cfn::Compiler::VERSION,constraint]
    when /^(DeCompiler|Decompiler)/
      [Aws::Cfn::DeCompiler::VERSION,constraint]
    when /^(Dsl|DSL)/
      [Aws::Cfn::Dsl::VERSION,constraint]
    when /Gems/
      constraint.map { |h|
        h.map { |k,v|
          ver = eval "#{k}::VERSION"
          semver = ::Semverse::Version.new(ver)
          raise "The constraint failed: #{k} #{v} (Found #{ver})" unless ::Semverse::Constraint.new(v).satisfies?(semver)
        }
      }
      return
    when /Template/
      @logger.warn "Template constraint check supported but not implemented in version #{VERSION}: #{constraint}"
      return
    # when /MinVersion/
    #   [Aws::Cfn::Compiler::VERSION,">= #{constraint}"]
    else
      raise "#{name} constraint not supported"
  end

  raise "The constraint failed: #{name} #{constraint} (Found #{version})" unless ::Semverse::Constraint.new(constraint).satisfies?(::Semverse::Version.new(version))

end

#sym_to_s(hash) ⇒ Object


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# File 'lib/aws/cfn/compiler/mixins/parse.rb', line 204

def sym_to_s(hash)
  case hash.class.name
    when /Hash/
      item = {}
      hash.each { |k,v|
        item[k.to_s] = sym_to_s(v)
      }
      item
    when /Array/
      hash.map{|e| sym_to_s(e) }
    when /Fixnum|String|TrueClass|FalseClass/
      hash
    when /Symbol/
      hash.to_s
    else
      abort! "Internal error: #{hash} is a #{hash.class.name} which our Ruby parsing is not prepared for. Fix #{__FILE__}::sym_to_s"
  end
end