class Sprockets::ProcessedAsset - sprockets-2.11.3 Documentation

# class Sprockets::ProcessedAsset

### Attributes

dependency_digest[R]

Interal: Used to check equality

source[R]

### Public Class Methods

new(environment, logical_path, pathname) click to toggle source
Calls superclass method Sprockets::Asset.new

    # File lib/sprockets/processed_asset.rb, line 6
    def initialize(environment, logical_path, pathname)
      super

      start_time = Time.now.to_f

      context = environment.context_class.new(environment, logical_path, pathname)
      @source = context.evaluate(pathname)
      @length = Rack::Utils.bytesize(source)
      @digest = environment.digest.update(source).hexdigest

      build_required_assets(environment, context)
      build_dependency_paths(environment, context)

      @dependency_digest = compute_dependency_digest(environment)

      elapsed_time = ((Time.now.to_f - start_time) * 1000).to_i
      environment.logger.debug "Compiled #{logical_path}  (#{elapsed_time}ms)  (pid #{Process.pid})"
    end

### Public Instance Methods

encode_with(coder) click to toggle source

Serialize custom attributes in `BundledAsset`.

Calls superclass method Sprockets::Asset#encode_with

    # File lib/sprockets/processed_asset.rb, line 52
    def encode_with(coder)
      super

      coder['source'] = source
      coder['dependency_digest'] = dependency_digest

      coder['required_paths'] = required_assets.map { |a|
        relativize_root_path(a.pathname).to_s
      }
      coder['dependency_paths'] = dependency_paths.map { |d|
        { 'path' => relativize_root_path(d.pathname).to_s,
          'mtime' => d.mtime.iso8601,
          'digest' => d.digest }
      }
    end

fresh?(environment) click to toggle source

Checks if Asset is stale by comparing the actual mtime and digest to the inmemory model.

    # File lib/sprockets/processed_asset.rb, line 70
    def fresh?(environment)
      # Check freshness of all declared dependencies
      @dependency_paths.all? { |dep| dependency_fresh?(environment, dep) }
    end

init_with(environment, coder) click to toggle source

Initialize `BundledAsset` from serialized `Hash`.

Calls superclass method Sprockets::Asset#init_with

    # File lib/sprockets/processed_asset.rb, line 31
    def init_with(environment, coder)
      super

      @source = coder['source']
      @dependency_digest = coder['dependency_digest']

      @required_assets = coder['required_paths'].map { |p|
        p = expand_root_path(p)

        unless environment.paths.detect { |path| p[path] }
          raise UnserializeError, "#{p} isn't in paths"
        end

        p == pathname.to_s ? self : environment.find_asset(p, :bundle => false)
      }
      @dependency_paths = coder['dependency_paths'].map { |h|
        DependencyFile.new(expand_root_path(h['path']), h['mtime'], h['digest'])
      }
    end

### Private Instance Methods

build_dependency_paths(environment, context) click to toggle source

    # File lib/sprockets/processed_asset.rb, line 124
    def build_dependency_paths(environment, context)
      dependency_paths = {}

      context._dependency_paths.each do |path|
        dep = DependencyFile.new(path, environment.stat(path).mtime, environment.file_digest(path).hexdigest)
        dependency_paths[dep] = true
      end

      context._dependency_assets.each do |path|
        if path == self.pathname.to_s
          dep = DependencyFile.new(pathname, environment.stat(path).mtime, environment.file_digest(path).hexdigest)
          dependency_paths[dep] = true
        elsif asset = environment.find_asset(path, :bundle => false)
          asset.dependency_paths.each do |d|
            dependency_paths[d] = true
          end
        end
      end

      @dependency_paths = dependency_paths.keys
    end

build_required_assets(environment, context) click to toggle source

    # File lib/sprockets/processed_asset.rb, line 96
    def build_required_assets(environment, context)
      @required_assets = resolve_dependencies(environment, context._required_paths + [pathname.to_s]) -
        resolve_dependencies(environment, context._stubbed_assets.to_a)
    end

compute_dependency_digest(environment) click to toggle source

    # File lib/sprockets/processed_asset.rb, line 146
    def compute_dependency_digest(environment)
      required_assets.inject(environment.digest) { |digest, asset|
        digest.update asset.digest
      }.hexdigest
    end

resolve_dependencies(environment, paths) click to toggle source

    # File lib/sprockets/processed_asset.rb, line 101
    def resolve_dependencies(environment, paths)
      assets = []
      cache  = {}

      paths.each do |path|
        if path == self.pathname.to_s
          unless cache[self]
            cache[self] = true
            assets << self
          end
        elsif asset = environment.find_asset(path, :bundle => false)
          asset.required_assets.each do |asset_dependency|
            unless cache[asset_dependency]
              cache[asset_dependency] = true
              assets << asset_dependency
            end
          end
        end
      end

      assets
    end