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# frozen_string_literal: true
module Gitlab
module Webpack
class Manifest
# Raised if we can't read our webpack manifest for whatever reason
class ManifestLoadError < StandardError
def initialize(message, orig)
super "#{message}\n\n(original error #{orig.class.name}: #{orig})"
end
end
# Raised if webpack couldn't build one of your entry points
class WebpackError < StandardError
def initialize(errors)
super "Error in webpack compile, details follow below:\n#{errors.join("\n\n")}"
end
end
# Raised if a supplied entry point does not exist in the webpack manifest
AssetMissingError = Class.new(StandardError)
class << self
include Gitlab::Utils::StrongMemoize
def entrypoint_paths(source)
raise WebpackError, manifest["errors"] unless manifest_bundled?
dll_assets = manifest.fetch("dllAssets", [])
entrypoint = manifest["entrypoints"][source]
if entrypoint && entrypoint["assets"]
# Can be either a string or an array of strings.
# Do not include source maps as they are not javascript
[dll_assets, entrypoint["assets"]].flatten.reject { |p| p =~ /.*\.map$/ }.map do |p|
"/#{Gitlab.config.webpack.public_path}/#{p}"
end
else
raise AssetMissingError, "Can't find asset '#{source}' in webpack manifest"
end
end
def asset_paths(source)
raise WebpackError, manifest["errors"] unless manifest_bundled?
paths = manifest["assetsByChunkName"][source]
if paths
# Can be either a string or an array of strings.
# Do not include source maps as they are not javascript
[paths].flatten.reject { |p| p =~ /.*\.map$/ }.map do |p|
"/#{Gitlab.config.webpack.public_path}/#{p}"
end
else
raise AssetMissingError, "Can't find entry point '#{source}' in webpack manifest"
end
end
def clear_manifest!
clear_memoization(:manifest)
end
private
def manifest_bundled?
!manifest["errors"].any? { |error| error.include? "Module build failed" }
end
def manifest
if Gitlab.config.webpack.dev_server.enabled
# Only cache at request level if we're in dev server mode, manifest may change ...
Gitlab::SafeRequestStore.fetch('manifest.json') { load_manifest }
else
# ... otherwise cache at class level, as JSON loading/parsing can be expensive
strong_memoize(:manifest) { load_manifest }
end
end
def load_manifest
data = Gitlab::Webpack::FileLoader.load(Gitlab.config.webpack.manifest_filename)
Gitlab::Json.parse(data)
rescue Gitlab::Webpack::FileLoader::StaticLoadError => e
raise ManifestLoadError.new("Could not load compiled manifest from #{e.uri}.\n\nHave you run `rake gitlab:assets:compile`?", e.original_error)
rescue Gitlab::Webpack::FileLoader::DevServerSSLError => e
ssl_status = Gitlab.config.webpack.dev_server.https ? ' over SSL' : ''
raise ManifestLoadError.new("Could not connect to webpack-dev-server at #{e.uri}#{ssl_status}.\n\nIs SSL enabled? Check that settings in `gitlab.yml` and webpack-dev-server match.", e.original_error)
rescue Gitlab::Webpack::FileLoader::DevServerLoadError => e
raise ManifestLoadError.new("Could not load manifest from webpack-dev-server at #{e.uri}.\n\nIs webpack-dev-server running? Try running `gdk status webpack` or `gdk tail webpack`.", e.original_error)
end
end
end
end
end
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