Update from https://crrev.com/317530

testing/legion/client_rpc_server.py

Index: testing/legion/client_rpc_server.py
diff --git a/testing/legion/client_rpc_server.py b/testing/legion/client_rpc_server.py
deleted file mode 100644
index 7a5f565156da667f7454703d4a04df3d145d7d92..0000000000000000000000000000000000000000
--- a/testing/legion/client_rpc_server.py
+++ /dev/null
@@ -1,128 +0,0 @@
-# Copyright 2015 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-"""The client RPC server code.
-
-This server is an XML-RPC server which serves code from
-client_rpc_methods.RPCMethods.
-
-This server will run until shutdown is called on the server object. This can
-be achieved in 2 ways:
-
-- Calling the Quit RPC method defined in RPCMethods
-- Not receiving any calls within the idle_timeout_secs time.
-"""
-
-import logging
-import threading
-import time
-import xmlrpclib
-import SimpleXMLRPCServer
-import SocketServer
-
-#pylint: disable=relative-import
-import client_rpc_methods
-import common_lib
-
-
-class RequestHandler(SimpleXMLRPCServer.SimpleXMLRPCRequestHandler):
-  """Restricts access to only specified IP address.
-
-  This call assumes the server is RPCServer.
-  """
-
-  def do_POST(self):
-    """Verifies the client is authorized to perform RPCs."""
-    if self.client_address[0] != self.server.authorized_address:
-      logging.error('Received unauthorized RPC request from %s',
-                    self.client_address[0])
-      self.send_response(403)
-      response = 'Forbidden'
-      self.send_header('Content-type', 'text/plain')
-      self.send_header('Content-length', str(len(response)))
-      self.end_headers()
-      self.wfile.write(response)
-    else:
-      return SimpleXMLRPCServer.SimpleXMLRPCRequestHandler.do_POST(self)
-
-
-class RPCServer(SimpleXMLRPCServer.SimpleXMLRPCServer,
-                SocketServer.ThreadingMixIn):
-  """Restricts all endpoints to only specified IP addresses."""
-
-  def __init__(self, authorized_address,
-               idle_timeout_secs=common_lib.DEFAULT_TIMEOUT_SECS):
-    SimpleXMLRPCServer.SimpleXMLRPCServer.__init__(
-        self, (common_lib.SERVER_ADDRESS, common_lib.SERVER_PORT),
-        allow_none=True, logRequests=False,
-        requestHandler=RequestHandler)
-
-    self.authorized_address = authorized_address
-    self.idle_timeout_secs = idle_timeout_secs
-    self.register_instance(client_rpc_methods.RPCMethods(self))
-
-    self._shutdown_requested_event = threading.Event()
-    self._rpc_received_event = threading.Event()
-    self._idle_thread = threading.Thread(target=self._CheckForIdleQuit)
-
-  def shutdown(self):
-    """Shutdown the server.
-
-    This overloaded method sets the _shutdown_requested_event to allow the
-    idle timeout thread to quit.
-    """
-    self._shutdown_requested_event.set()
-    SimpleXMLRPCServer.SimpleXMLRPCServer.shutdown(self)
-    logging.info('Server shutdown complete')
-
-  def serve_forever(self, poll_interval=0.5):
-    """Serve forever.
-
-    This overloaded method starts the idle timeout thread before calling
-    serve_forever. This ensures the idle timer thread doesn't get started
-    without the server running.
-
-    Args:
-      poll_interval: The interval to poll for shutdown.
-    """
-    logging.info('RPC server starting')
-    self._idle_thread.start()
-    SimpleXMLRPCServer.SimpleXMLRPCServer.serve_forever(self, poll_interval)
-
-  def _dispatch(self, method, params):
-    """Dispatch the call to the correct method with the provided params.
-
-    This overloaded method adds logging to help trace connection and
-    call problems.
-
-    Args:
-      method: The method name to call.
-      params: A tuple of parameters to pass.
-
-    Returns:
-      The result of the parent class' _dispatch method.
-    """
-    logging.debug('Calling %s%s', method, params)
-    self._rpc_received_event.set()
-    return SimpleXMLRPCServer.SimpleXMLRPCServer._dispatch(self, method, params)
-
-  def _CheckForIdleQuit(self):
-    """Check for, and exit, if the server is idle for too long.
-
-    This method must be run in a separate thread to avoid a deadlock when
-    calling server.shutdown.
-    """
-    timeout = time.time() + self.idle_timeout_secs
-    while time.time() < timeout:
-      if self._shutdown_requested_event.is_set():
-        # An external source called shutdown()
-        return
-      elif self._rpc_received_event.is_set():
-        logging.debug('Resetting the idle timeout')
-        timeout = time.time() + self.idle_timeout_secs
-        self._rpc_received_event.clear()
-      time.sleep(1)
-    # We timed out, kill the server
-    logging.warning('Shutting down the server due to the idle timeout')
-    self.shutdown()