Class: FPM::Package::NPM

Inherits:
FPM::Package show all
Extended by:
Util
Defined in:
lib/fpm/package/npm.rb

Instance Attribute Summary

Attributes inherited from FPM::Package

#architecture, #attributes, #attrs, #category, #config_files, #conflicts, #dependencies, #description, #directories, #epoch, #iteration, #license, #maintainer, #name, #provides, #replaces, #scripts, #url, #vendor, #version

Instance Method Summary collapse

Methods included from Util

ar_cmd, ar_cmd_deterministic?, copied_entries, copy_entry, copy_metadata, default_shell, execmd, expand_pessimistic_constraints, logger, mknod_w, program_exists?, program_in_path?, safesystem, safesystemout, tar_cmd, tar_cmd_supports_sort_names_and_set_mtime?

Methods inherited from FPM::Package

apply_options, #build_path, #cleanup, #cleanup_build, #cleanup_staging, #convert, #converted_from, default_attributes, #edit_file, #files, inherited, #initialize, option, #output, #script, #staging_path, #to_s, #type, type, types

Constructor Details

This class inherits a constructor from FPM::Package

Instance Method Details

#input(package) ⇒ Object 



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# File 'lib/fpm/package/npm.rb', line 21

def input(package)
  # Notes:
  # * npm respects PREFIX
  settings = {
    "cache" => build_path("npm_cache"),
    "loglevel" => "warn",
    "global" => "true"
  }

  settings["registry"] = attributes[:npm_registry] if attributes[:npm_registry_given?]
  set_default_prefix unless attributes[:prefix_given?]

  settings["prefix"] = staging_path(attributes[:prefix])
  FileUtils.mkdir_p(settings["prefix"])

  npm_flags = []
  settings.each do |key, value|
    # npm lets you specify settings in a .npmrc but the same key=value settings
    # are valid as '--key value' command arguments to npm. Woo!
    logger.debug("Configuring npm", key => value)
    npm_flags += [ "--#{key}", value ]
  end

  install_args = [
    attributes[:npm_bin],
    "install",
    # use 'package' or 'package@version'
   (version ? "#{package}@#{version}" : package)
  ]

  # The only way to get npm to respect the 'prefix' setting appears to
  # be to set the --global flag.
  #install_args << "--global"
  install_args += npm_flags

  safesystem(*install_args)

  # Query details about our now-installed package.
  # We do this by using 'npm ls' with json + long enabled to query details
  # about the installed package.
  npm_ls_out = safesystemout(attributes[:npm_bin], "ls", "--json", "--long", *npm_flags)
  npm_ls = JSON.parse(npm_ls_out)
  name, info = npm_ls["dependencies"].first

  self.name = [attributes[:npm_package_name_prefix], name].join("-")
  self.version = info.fetch("version", "0.0.0")

  if info.include?("repository")
    self.url = info["repository"]["url"]
  else
    self.url = "https://npmjs.org/package/#{self.name}"
  end

  self.description = info["description"]
  # Supposedly you can upload a package for npm with no author/author email
  # so I'm being safer with this. Author can also be a hash or a string
  self.vendor = "Unknown <[email protected]>"
  if info.include?("author")
    author_info = info["author"]
    # If a hash, assemble into a string
    if author_info.respond_to? :fetch
      self.vendor = sprintf("%s <%s>", author_info.fetch("name", "unknown"),
                            author_info.fetch("email", "[email protected]"))
    else
      # Probably will need a better check for validity here
      self.vendor = author_info unless author_info == ""
    end
  end

  # npm installs dependencies in the module itself, so if you do
  # 'npm install express' it installs dependencies (like 'connect')
  # to: node_modules/express/node_modules/connect/...
  #
  # To that end, I don't think we necessarily need to include
  # any automatic dependency information since every 'npm install'
  # is fully self-contained. That's why you don't see any bother, yet,
  # to include the package's dependencies in here.
  #
  # It's possible someone will want to decouple that in the future,
  # but I will wait for that feature request.
end