Class: Paraspec::MsgpackServer

Inherits:
Object
  • Object
show all
Includes:
MsgpackHelpers
Defined in:
lib/paraspec/msgpack_server.rb

Instance Method Summary collapse

Methods included from MsgpackHelpers

#packer, #unpacker

Constructor Details

#initialize(master) ⇒ MsgpackServer

Returns a new instance of MsgpackServer.



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# File 'lib/paraspec/msgpack_server.rb', line 9

def initialize(master)
  @master = master
  @lock = Mutex.new
end

Instance Method Details

#process_request(s, obj) ⇒ Object 



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# File 'lib/paraspec/msgpack_server.rb', line 42

def process_request(s, obj)
  result = nil
  time = Benchmark.realtime do
    action = obj['action'].gsub('-', '_')
    payload = obj['payload']
    if payload
      payload = IpcHash.new.merge(payload)
      args = [payload]
    else
      args = []
    end

    Paraspec.logger.debug_ipc("SrvReq:#{obj['id']} #{obj}")
    result = @master.send(action, *args)

    pk = packer(s)
    resp = {result: result}
    Paraspec.logger.debug_ipc("SrvRes:#{obj['id']} #{resp}")
    if payload && payload['_noret']
      # Requester does not want a response.
      # We return a hash here because deserializer expects a hash.
      # Always returning `resp` is problematic because it can
      # be non-serializable.
      pk.write({})
    else
      pk.write(resp)
    end
    pk.flush
    s.flush
  end
  Paraspec.logger.debug_perf("SrvReq:#{obj['id']} #{obj['action']}: #{result} #{'%.3f msec' % (time*1000)}")
end

#run ⇒ Object 



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# File 'lib/paraspec/msgpack_server.rb', line 14

def run
  @socket = ::TCPServer.new('127.0.0.1', Paraspec::Ipc.master_app_port)
  begin
    while true
      s = @socket.accept_nonblock
      run_processing_thread(s)
    end
  rescue Errno::EAGAIN
    unless @master.stop?
      sleep 0.2
      retry
    end
  end
end

#run_processing_thread(s) ⇒ Object 



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# File 'lib/paraspec/msgpack_server.rb', line 29

def run_processing_thread(s)
  Thread.new do
    u = unpacker(s)
    u.each do |obj|
      # Apparently this block may be run concurrently, which we are not
      # equipped for.
      @lock.synchronize do
        process_request(s, obj)
      end
    end
  end
end