Class: Mvp::PuppetfileParser

Inherits:
Object
  • Object
show all
Defined in:
lib/mvp/puppetfile_parser.rb

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ PuppetfileParser

Returns a new instance of PuppetfileParser.



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# File 'lib/mvp/puppetfile_parser.rb', line 3

def initialize(options = {})
  @sources = {}
  @modules = []
  @repo    = nil
end

Instance Method Details

#add_module(name, args) ⇒ Object 



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# File 'lib/mvp/puppetfile_parser.rb', line 68

def add_module(name, args)
  unless name.is_a? String
    $logger.warn "Non string module name in #{@repo[:repo_name]}/Puppetfile"
    return nil
  end
  name.gsub!('/', '-')
  case args
  when String, Symbol, NilClass
    @modules << {
      :module  => name,
      :type    => :forge,
      :source  => :forge,
      :version => args,
    }
  when Hash
    @modules << parse_args(name, args)
  else
    $logger.warn "#{@repo[:repo_name]}/Puppetfile: Unknown format: mod('#{name}', #{args.inspect})"
  end
end

#canonical_git_repo(repo) ⇒ Object 



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# File 'lib/mvp/puppetfile_parser.rb', line 60

def canonical_git_repo(repo)
  return unless repo
  return unless repo.is_a? String
  repo.sub(/^[email protected]\:/, 'github.com/')
      .sub(/^(git|https?)\:\/\//, '')
      .sub(/\.git$/, '')
end

#canonical_name(name, repo) ⇒ Object 



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# File 'lib/mvp/puppetfile_parser.rb', line 52

def canonical_name(name, repo)
  return name if name.include?('-')
  repo = canonical_git_repo(repo)

  return @sources[repo] if @sources.include?(repo)
  name
end

#parse(repo) ⇒ Object 



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# File 'lib/mvp/puppetfile_parser.rb', line 22

def parse(repo)
  # This only works on Ruby 2.6+
  return unless suitable?

  begin
    root = RubyVM::AbstractSyntaxTree.parse(repo[:content])
  rescue SyntaxError => e
    $logger.warn "Syntax error in #{repo[:repo_name]}/Puppetfile"
    $logger.warn e.message
  end

  @repo    = repo
  @modules = []
  traverse(root)
  @modules.compact.map do |row|
    row[:repo_name] = repo[:repo_name]
    row[:md5]       = repo[:md5]
    row[:module]    = canonical_name(row[:module], row[:source])
    stringify(row)
  end
end

#parse_args(name, args) ⇒ Object 



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# File 'lib/mvp/puppetfile_parser.rb', line 89

def parse_args(name, args)
  data = {:module => name}

  if args.include? :git
    data[:type]    = :git
    data[:source]  = args[:git]
    data[:version] = args[:ref] || args[:tag] || args[:commit] || args[:branch] || :latest
  elsif args.include? :svn
    data[:type]    = :svn
    data[:source]  = args[:svn]
    data[:version] = args[:rev] || args[:revision] || :latest
  elsif args.include? :boxen
    data[:type]    = :boxen
    data[:source]  = args[:repo]
    data[:version] = args[:version] || :latest
  else
    $logger.warn "#{@repo[:repo_name]}/Puppetfile: Unknown args format: mod('#{name}', #{args.inspect})"
    return nil
  end

  data
end

#sources=(modules) ⇒ Object 



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# File 'lib/mvp/puppetfile_parser.rb', line 13

def sources=(modules)
  modules.each do |row|
    next unless row[:source]
    next if row[:source] == 'UNKNOWN'

    @sources[canonical_git_repo(row[:source])] = row[:slug]
  end
end

#stringify(row) ⇒ Object 



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# File 'lib/mvp/puppetfile_parser.rb', line 44

def stringify(row)
  row.each do |key, value|
    if value.is_a? RubyVM::AbstractSyntaxTree::Node
      row[key] = :'#<programmatically generated via ruby code>'
    end
  end
end

#suitable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mvp/puppetfile_parser.rb', line 9

def suitable?
  defined?(RubyVM::AbstractSyntaxTree)
end

#test ⇒ Object 



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# File 'lib/mvp/puppetfile_parser.rb', line 166

def test()
  require 'pry'
  binding.pry
end

#traverse(node) ⇒ Object 



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# File 'lib/mvp/puppetfile_parser.rb', line 112

def traverse(node)
  begin
    if node.type == :FCALL
      name = node.children.first
      args = node.children.last.children.map do |item|
        next if item.nil?

        case item.type
        when :HASH
          Hash[*item.children.first.children.compact.map {|n| n.children.first }]
        else
          item.children.first
        end
      end.compact

      case name
      when :mod
        add_module(args.shift, args.shift)
      when :forge
        # noop
      when :moduledir
        # noop
      when :github
        # oh boxen, you so silly.
        # The order of the unpacking below *is* important.
        modname = args.shift
        version = args.shift
        data    = args.shift || {}

        # this is gross but I'm not sure I actually care right now.
        if (modname.is_a? String and [String, NilClass].include? version.class and data.is_a? Hash)
          data[:boxen]   = :boxen
          data[:version] = version
          add_module(modname, data)
        else
          $logger.warn "#{@repo[:repo_name]}/Puppetfile: malformed boxen"
        end
      else
        # Should we record unexpected Ruby code or just log it to stdout?
        args = args.map {|a| a.is_a?(String) ? "'#{a}'" : a}.join(', ')
        $logger.warn "#{@repo[:repo_name]}/Puppetfile: Unexpected invocation of #{name}(#{args})"
      end
    end

    node.children.each do |n|
      next unless n.is_a? RubyVM::AbstractSyntaxTree::Node

      traverse(n)
    end
  rescue => e
    puts e.message
  end
end