def call(env)
path, digest = extract_path_and_digest(env)
if (asset = @assembly.load_path.find(path)) && asset.fresh?(digest)
compiled_content = @assembly.compilers.compile(asset)
[
200,
{
Rack::CONTENT_LENGTH => compiled_content.length.to_s,
Rack::CONTENT_TYPE => asset.content_type.to_s,
VARY => "Accept-Encoding",
Rack::ETAG => asset.digest,
Rack::CACHE_CONTROL => "public, max-age=31536000, immutable"
},
[ compiled_content ]
]
else
[ 404, { Rack::CONTENT_TYPE => "text/plain", Rack::CONTENT_LENGTH => "9" }, [ "Not found" ] ]
end
end