class Thrift::NonblockingServer

   # File lib/thrift/server/nonblocking_server.rb
27 def initialize(processor, server_transport, transport_factory = nil, protocol_factory = nil, num = 20, logger = nil,
28                max_frame_size: FramedTransport::DEFAULT_MAX_FRAME_SIZE)
29   super(processor, server_transport, transport_factory, protocol_factory)
30   unless max_frame_size > 0 && max_frame_size <= FramedTransport::HARD_MAX_FRAME_SIZE
31     raise ArgumentError, "max_frame_size must be > 0 and <= #{FramedTransport::HARD_MAX_FRAME_SIZE}"
32   end
33   @num_threads = num
34   @max_frame_size = max_frame_size
35   if logger.nil?
36     @logger = Logger.new(STDERR)
37     @logger.level = Logger::WARN
38   else
39     @logger = logger
40   end
41   @shutdown_semaphore = Mutex.new
42   @transport_semaphore = Mutex.new
43 end

   # File lib/thrift/server/nonblocking_server.rb
45 def serve
46   @logger.info "Starting #{self}"
47   @server_transport.listen
48   @io_manager = start_io_manager
49 
50   begin
51     loop do
52       break if @server_transport.closed?
53       begin
54         rd, = select([@server_transport], nil, nil, 0.1)
55       rescue Errno::EBADF => e
56         # In Ruby 1.9, calling @server_transport.close in shutdown paths causes the select() to raise an
57         # Errno::EBADF. If this happens, ignore it and retry the loop.
58         break
59       end
60       next if rd.nil?
61       begin
62         socket = @server_transport.accept
63       rescue => e
64         next if defined?(OpenSSL::SSL::SSLError) && e.is_a?(OpenSSL::SSL::SSLError)
65         raise
66       end
67       @logger.debug "Accepted socket: #{socket.inspect}"
68       @io_manager.add_connection socket
69     end
70   rescue IOError
71   end
72   # we must be shutting down
73   @logger.info "#{self} is shutting down, goodbye"
74 ensure
75   @transport_semaphore.synchronize do
76     @server_transport.close
77   end
78   @io_manager.ensure_closed unless @io_manager.nil?
79 end

   # File lib/thrift/server/nonblocking_server.rb
81 def shutdown(timeout = 0, block = true)
82   @shutdown_semaphore.synchronize do
83     return if @is_shutdown
84     @is_shutdown = true
85   end
86   # nonblocking is intended for calling from within a Handler
87   # but we can't change the order of operations here, so lets thread
88   shutdown_proc = lambda do
89     @io_manager.shutdown(timeout)
90     @transport_semaphore.synchronize do
91       @server_transport.close # this will break the accept loop
92     end
93   end
94   if block
95     shutdown_proc.call
96   else
97     Thread.new(&shutdown_proc)
98   end
99 end

    # File lib/thrift/server/nonblocking_server.rb
103 def start_io_manager
104   iom = IOManager.new(
105     @processor, @server_transport, @transport_factory, @protocol_factory, @num_threads, @logger,
106     max_frame_size: @max_frame_size,
107   )
108   iom.spawn
109   iom
110 end