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task 'assets:precompile:before' do
require 'uglifier'
require 'open3'
unless %w{profile production}.include? Rails.env
raise "rake assets:precompile should only be run in RAILS_ENV=production, you are risking unminified assets"
end
# Ensure we ALWAYS do a clean build
# We use many .erbs that get out of date quickly, especially with plugins
puts "Purging temp files"
`rm -fr #{Rails.root}/tmp/cache`
# Ensure we clear emoji cache before pretty-text/emoji/data.js.es6.erb
# is recompiled
Emoji.clear_cache
if Rails.configuration.assets.js_compressor == :uglifier && !`which uglifyjs`.empty? && !ENV['SKIP_NODE_UGLIFY']
$node_uglify = true
end
unless ENV['USE_SPROCKETS_UGLIFY']
$bypass_sprockets_uglify = true
end
puts "Bundling assets"
# in the past we applied a patch that removed asset postfixes, but it is terrible practice
# leaving very complicated build issues
# https://github.com/rails/sprockets-rails/issues/49
require 'sprockets'
require 'digest/sha1'
# Needed for proper source maps with a CDN
load "#{Rails.root}/lib/global_path.rb"
include GlobalPath
if $bypass_sprockets_uglify
Rails.configuration.assets.js_compressor = nil
Rails.configuration.assets.gzip = false
end
end
task 'assets:precompile:css' => 'environment' do
if ENV["DONT_PRECOMPILE_CSS"] == "1"
STDERR.puts "Skipping CSS precompilation, ensure CSS lives in a shared directory across hosts"
else
STDERR.puts "Start compiling CSS: #{Time.zone.now}"
RailsMultisite::ConnectionManagement.each_connection do |db|
# Heroku precompiles assets before db migration, so tables may not exist.
# css will get precompiled during first request instead in that case.
if ActiveRecord::Base.connection.table_exists?(Theme.table_name)
STDERR.puts "Compiling css for #{db} #{Time.zone.now}"
begin
Stylesheet::Manager.precompile_css
rescue => PG::UndefinedColumn
STDERR.puts "Skipping precompilation of CSS cause schema is old, you are precompiling prior to running migrations."
end
end
end
STDERR.puts "Done compiling CSS: #{Time.zone.now}"
end
end
def assets_path
"#{Rails.root}/public/assets"
end
def compress_node(from, to)
to_path = "#{assets_path}/#{to}"
assets = cdn_relative_path("/assets")
source_map_root = assets + ((d = File.dirname(from)) == "." ? "" : "/#{d}")
source_map_url = cdn_path "/assets/#{to}.map"
cmd = "uglifyjs '#{assets_path}/#{from}' -p relative -c -m -o '#{to_path}' --source-map-root '#{source_map_root}' --source-map '#{assets_path}/#{to}.map' --source-map-url '#{source_map_url}'"
STDERR.puts cmd
result = `#{cmd} 2>&1`
unless $?.success?
STDERR.puts result
exit 1
end
result
end
def compress_ruby(from, to)
data = File.read("#{assets_path}/#{from}")
uglified, map = Uglifier.new(comments: :none,
source_map: {
filename: File.basename(from),
output_filename: File.basename(to)
}
)
.compile_with_map(data)
dest = "#{assets_path}/#{to}"
File.write(dest, uglified << "\n//# sourceMappingURL=#{cdn_path "/assets/#{to}.map"}")
File.write(dest + ".map", map)
GC.start
end
def gzip(path)
STDERR.puts "gzip -f -c -9 #{path} > #{path}.gz"
STDERR.puts `gzip -f -c -9 #{path} > #{path}.gz`.strip
raise "gzip compression failed: exit code #{$?.exitstatus}" if $?.exitstatus != 0
end
if ENV['COMPRESS_BROTLI']&.to_i == 1
# different brotli versions use different parameters
ver_out, _ver_err, ver_status = Open3.capture3('brotli --version')
if !ver_status.success?
# old versions of brotli don't respond to --version
def brotli_command(path)
"brotli --quality 11 --input #{path} --output #{path}.br"
end
elsif ver_out >= "brotli 1.0.0"
def brotli_command(path)
"brotli -f --quality=11 #{path} --output=#{path}.br"
end
else
# not sure what to do here, not expecting this
raise "cannot determine brotli version"
end
end
def brotli(path)
if ENV['COMPRESS_BROTLI']&.to_i == 1
STDERR.puts brotli_command(path)
STDERR.puts `#{brotli_command(path)}`
raise "brotli compression failed: exit code #{$?.exitstatus}" if $?.exitstatus != 0
STDERR.puts `chmod +r #{path}.br`.strip
raise "chmod failed: exit code #{$?.exitstatus}" if $?.exitstatus != 0
end
end
def compress(from, to)
if $node_uglify
compress_node(from, to)
else
compress_ruby(from, to)
end
end
def concurrent?
executor = Concurrent::FixedThreadPool.new(Concurrent.processor_count)
if ENV["SPROCKETS_CONCURRENT"] == "1"
concurrent_compressors = []
yield(Proc.new { |&block| concurrent_compressors << Concurrent::Future.execute(executor: executor) { block.call } })
concurrent_compressors.each(&:wait!)
else
yield(Proc.new { |&block| block.call })
end
end
task 'assets:precompile' => 'assets:precompile:before' do
if $bypass_sprockets_uglify
puts "Compressing Javascript and Generating Source Maps"
manifest = Sprockets::Manifest.new(assets_path)
concurrent? do |proc|
to_skip = Rails.configuration.assets.skip_minification || []
manifest.files
.select { |k, v| k =~ /\.js$/ }
.each do |file, info|
path = "#{assets_path}/#{file}"
_file = (d = File.dirname(file)) == "." ? "_#{file}" : "#{d}/_#{File.basename(file)}"
_path = "#{assets_path}/#{_file}"
if File.exists?(_path)
STDERR.puts "Skipping: #{file} already compressed"
else
proc.call do
start = Process.clock_gettime(Process::CLOCK_MONOTONIC)
STDERR.puts "#{start} Compressing: #{file}"
# We can specify some files to never minify
unless (ENV["DONT_MINIFY"] == "1") || to_skip.include?(info['logical_path'])
FileUtils.mv(path, _path)
compress(_file, file)
end
info["size"] = File.size(path)
info["mtime"] = File.mtime(path).iso8601
gzip(path)
brotli(path)
STDERR.puts "Done compressing #{file} : #{(Process.clock_gettime(Process::CLOCK_MONOTONIC) - start).round(2)} secs"
STDERR.puts
end
end
end
end
# protected
manifest.send :save
if GlobalSetting.fallback_assets_path.present?
begin
FileUtils.cp_r("#{Rails.root}/public/assets/.", GlobalSetting.fallback_assets_path)
rescue => e
STDERR.puts "Failed to backup assets to #{GlobalSetting.fallback_assets_path}"
STDERR.puts e
STDERR.puts e.backtrace
end
end
end
end
Rake::Task["assets:precompile"].enhance do
class Sprockets::Manifest
def reload
@filename = find_directory_manifest(@directory)
@data = json_decode(File.read(@filename))
end
end
# cause on boot we loaded a blank manifest,
# we need to know where all the assets are to precompile CSS
# cause CSS uses asset_path
Rails.application.assets_manifest.reload
Rake::Task["assets:precompile:css"].invoke
end