removed unnecessary lb response generator

tools/codegen/core/gen_grpclb_test_response.py

-#!/usr/bin/env python2.7
-
-# Copyright 2015-2016, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-from __future__ import print_function
-import argparse
-import subprocess
-import sys
-import os.path
-import sys
-import tempfile
-import importlib
-
-# Example: tools/codegen/core/gen_grpclb_test_response.py \
-#          --lb_proto src/proto/grpc/lb/v1/load_balancer.proto \
-#          127.0.0.1:1234 10.0.0.1:4321
-
-# 1) Compile src/proto/grpc/lb/v1/load_balancer.proto to a temp location
-parser = argparse.ArgumentParser()
-parser.add_argument('--lb_proto', required=True)
-parser.add_argument('-e', '--expiration_interval_secs', type=int)
-parser.add_argument('-o', '--output')
-parser.add_argument('-q', '--quiet', default=False, action='store_true')
-parser.add_argument('ipports', nargs='+')
-args = parser.parse_args()
-
-if not os.path.isfile(args.lb_proto):
-  print("ERROR: file '{}' cannot be accessed (not found, no permissions, etc.)"
-        .format(args.lb_proto), file=sys.stderr)
-  sys.exit(1)
-
-proto_dirname = os.path.dirname(args.lb_proto)
-output_dir = tempfile.mkdtemp()
-
-protoc_cmd = 'protoc -I{} --python_out={} {}'.format(
-    proto_dirname, output_dir, args.lb_proto)
-
-with tempfile.TemporaryFile() as stderr_tmpfile:
-  if subprocess.call(protoc_cmd, stderr=stderr_tmpfile, shell=True) != 0:
-    stderr_tmpfile.seek(0)
-    print("ERROR: while running '{}': {}".
-          format(protoc_cmd, stderr_tmpfile.read()))
-    sys.exit(2)
-
-# 2) import the output .py file.
-module_name = os.path.splitext(os.path.basename(args.lb_proto))[0] + '_pb2'
-sys.path.append(output_dir)
-pb_module = importlib.import_module(module_name)
-
-# 3) Generate!
-lb_response = pb_module.LoadBalanceResponse()
-if args.expiration_interval_secs:
-  lb_response.server_list.expiration_interval.seconds = \
-  args.expiration_interval_secs
-
-for ipport in args.ipports:
-  ip, port = ipport.split(':')
-  server = lb_response.server_list.servers.add()
-  server.ip_address = ip
-  server.port = int(port)
-  server.load_balance_token = b'token{}'.format(port)
-
-serialized_bytes = lb_response.SerializeToString()
-serialized_hex = ''.join('\\x{:02x}'.format(ord(c)) for c in serialized_bytes)
-if args.output:
-  with open(args.output, 'w') as f:
-    f.write(serialized_bytes)
-if not args.quiet:
-  print(str(lb_response))
-  print(serialized_hex)