44 lines
1.1 KiB
Ruby
44 lines
1.1 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require 'action_dispatch/middleware/static'
|
|
|
|
class PublicFileServerMiddleware
|
|
SERVICE_WORKER_TTL = 7.days.to_i
|
|
CACHE_TTL = 28.days.to_i
|
|
|
|
def initialize(app)
|
|
@app = app
|
|
@file_handler = ActionDispatch::FileHandler.new(Rails.application.paths['public'].first)
|
|
end
|
|
|
|
def call(env)
|
|
file = @file_handler.attempt(env)
|
|
|
|
# If the request is not a static file, move on!
|
|
return @app.call(env) if file.nil?
|
|
|
|
status, headers, response = file
|
|
|
|
# Set cache headers on static files. Some paths require different cache headers
|
|
headers['Cache-Control'] = begin
|
|
request_path = env['REQUEST_PATH']
|
|
|
|
if request_path.start_with?('/sw.js')
|
|
"public, max-age=#{SERVICE_WORKER_TTL}, must-revalidate"
|
|
elsif request_path.start_with?(paperclip_root_url)
|
|
"public, max-age=#{CACHE_TTL}, immutable"
|
|
else
|
|
"public, max-age=#{CACHE_TTL}, must-revalidate"
|
|
end
|
|
end
|
|
|
|
[status, headers, response]
|
|
end
|
|
|
|
private
|
|
|
|
def paperclip_root_url
|
|
ENV.fetch('PAPERCLIP_ROOT_URL', '/system')
|
|
end
|
|
end
|