389e3f5a8c
This allows manually changing the filename so that fiel header changes can be reflected on the CDN. E.g. if you turn on crossOrigin serving (CORS) the asset hash doesn't change, but the CDN cache needs to be broken in order to pickup the new header.
107 lines
3.8 KiB
Ruby
107 lines
3.8 KiB
Ruby
require 'middleman-core/util'
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require 'middleman-core/rack'
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class Middleman::Extensions::AssetHash < ::Middleman::Extension
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option :sources, %w(.css .htm .html .js .php .xhtml), 'List of extensions that are searched for hashable assets.'
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option :exts, nil, 'List of extensions that get asset hashes appended to them.'
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option :ignore, [], 'Regexes of filenames to skip adding asset hashes to'
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option :rewrite_ignore, [], 'Regexes of filenames to skip processing for path rewrites'
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option :prefix, '', 'Prefix for hash'
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def initialize(app, options_hash={}, &block)
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super
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require 'addressable/uri'
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require 'digest/sha1'
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require 'rack/mock'
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# Allow specifying regexes to ignore, plus always ignore apple touch icons
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@ignore = Array(options.ignore) + [/^apple-touch-icon/]
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# Exclude .ico from the default list because browsers expect it
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# to be named "favicon.ico"
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@exts = options.exts || (app.config[:asset_extensions] - %w(.ico))
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app.rewrite_inline_urls id: :asset_hash,
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url_extensions: @exts.sort.reverse,
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source_extensions: options.sources,
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ignore: @ignore,
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rewrite_ignore: options.rewrite_ignore,
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proc: method(:rewrite_url),
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after: :asset_host
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end
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Contract String, Or[String, Pathname], Any => Maybe[String]
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def rewrite_url(asset_path, dirpath, _request_path)
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uri = ::Middleman::Util.parse_uri(asset_path)
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relative_path = !uri.path.start_with?('/')
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full_asset_path = if relative_path
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dirpath.join(asset_path).to_s
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else
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asset_path
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end
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return unless asset_page = app.sitemap.find_resource_by_destination_path(full_asset_path) || app.sitemap.find_resource_by_path(full_asset_path)
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replacement_path = "/#{asset_page.destination_path}"
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replacement_path = Pathname.new(replacement_path).relative_path_from(dirpath).to_s if relative_path
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replacement_path
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end
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# Update the main sitemap resource list
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# @return Array<Middleman::Sitemap::Resource>
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Contract ResourceList => ResourceList
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def manipulate_resource_list(resources)
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@rack_client ||= begin
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rack_app = ::Middleman::Rack.new(app).to_app
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::Rack::MockRequest.new(rack_app)
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end
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# Process resources in order: binary images and fonts, then SVG, then JS/CSS.
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# This is so by the time we get around to the text files (which may reference
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# images and fonts) the static assets' hashes are already calculated.
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resources.sort_by do |a|
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if %w(.svg .svgz).include? a.ext
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0
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elsif %w(.js .css).include? a.ext
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1
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else
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-1
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end
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end.each(&method(:manipulate_single_resource))
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end
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Contract IsA['Middleman::Sitemap::Resource'] => Maybe[IsA['Middleman::Sitemap::Resource']]
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def manipulate_single_resource(resource)
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return unless @exts.include?(resource.ext)
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return if ignored_resource?(resource)
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return if resource.ignored?
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digest = if resource.binary?
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::Digest::SHA1.file(resource.source_file).hexdigest[0..7]
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else
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# Render through the Rack interface so middleware and mounted apps get a shot
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response = @rack_client.get(
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::URI.escape(resource.destination_path),
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'bypass_inline_url_rewriter_asset_hash' => 'true'
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)
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raise "#{resource.path} should be in the sitemap!" unless response.status == 200
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::Digest::SHA1.hexdigest(response.body)[0..7]
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end
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resource.destination_path = resource.destination_path.sub(/\.(\w+)$/) { |ext| "-#{options.prefix}#{digest}#{ext}" }
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resource
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end
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Contract IsA['Middleman::Sitemap::Resource'] => Bool
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def ignored_resource?(resource)
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@ignore.any? do |ignore|
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Middleman::Util.path_match(ignore, resource.destination_path)
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end
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end
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end
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