class RuboCop::Server::Core
@api private
The core of server process. It starts TCP server and perform socket communication.
def self.token
def self.token @token ||= SecureRandom.hex(4) end
def demonize
def demonize Cache.write_port_and_token_files(port: @server.addr[1], token: token) pid = fork do Process.daemon(true) $stderr.reopen(Cache.stderr_path, 'w') Cache.write_pid_file do read_socket(@server.accept) until @server.closed? end end Process.waitpid(pid) end
def read_socket(socket)
def read_socket(socket) SocketReader.new(socket).read! rescue InvalidTokenError socket.puts 'token is not valid.' rescue ServerStopRequest @server.close rescue UnknownServerCommandError => e socket.puts e.message rescue Errno::EPIPE => e warn e.inspect rescue StandardError => e socket.puts e.full_message ensure socket.close end
def server_mode?
def server_mode? true end
def start(host, port)
def start(host, port) $PROGRAM_NAME = "rubocop --server #{Cache.project_dir}" require 'rubocop' start_server(host, port) demonize if server_mode? end
def start_server(host, port)
def start_server(host, port) @server = TCPServer.open(host, port) # JSON format does not expected output message when IDE integration with server mode. # See: https://github.com/rubocop/rubocop/issues/11164 return if use_json_format? output_stream = ARGV.include?('--stderr') ? $stderr : $stdout output_stream.puts "RuboCop server starting on #{@server.addr[3]}:#{@server.addr[1]}." end
def token
def token self.class.token end
def use_json_format?
def use_json_format? return true if ARGV.include?('--format=json') || ARGV.include?('--format=j') return false unless (index = ARGV.index('--format')) format = ARGV[index + 1] JSON_FORMATS.include?(format) end