python/appcfg.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright 2007 Google Inc.
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16 #
  17
  18
  19
  20 """Convenience wrapper for starting an appengine tool."""
  21
  22
  23
  24 import os
  25 import sys
  26
  27 sys_path = sys.path
  28 try:
  29   sys.path = [os.path.dirname(__file__)] + sys.path
  30
  31   import wrapper_util
  32
  33 finally:
  34   sys.path = sys_path
  35
  36 wrapper_util.reject_old_python_versions((2, 5))
  37
  38
  39
  40
  41 def get_dir_path(sibling):
  42   """Get a path to the directory of this script.
  43
  44   By default, the canonical path (symlinks resolved) will be returned. In some
  45   environments the canonical directory is not sufficient because different
  46   parts of the SDK are referenced by symlinks, including this very module's
  47   file. In this case, the non-canonical path to this file's directory will be
  48   returned (i.e., the directory where the symlink lives, not the directory
  49   where it points).
  50
  51   Args:
  52     sibling: Relative path to a sibling of this module file. Choose a sibling
  53     that is potentially symlinked into the parent directory.
  54
  55   Returns:
  56     A directory name.
  57
  58   Raises:
  59     ValueError: If no proper path could be determined.
  60   """
  61   return wrapper_util.get_dir_path(__file__, sibling)
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75 DIR_PATH = get_dir_path(os.path.join('lib', 'ipaddr'))
  76 _PATHS = wrapper_util.Paths(DIR_PATH)
  77
  78 SCRIPT_DIR = _PATHS.default_script_dir
  79 GOOGLE_SQL_DIR = _PATHS.google_sql_dir
  80
  81 EXTRA_PATHS = _PATHS.v1_extra_paths
  82
  83 API_SERVER_EXTRA_PATHS = _PATHS.api_server_extra_paths
  84
  85 ENDPOINTSCFG_EXTRA_PATHS = _PATHS.endpointscfg_extra_paths
  86
  87
  88 OAUTH_CLIENT_EXTRA_PATHS = _PATHS.oauth_client_extra_paths
  89
  90
  91 GOOGLE_SQL_EXTRA_PATHS = _PATHS.google_sql_extra_paths
  92
  93
  94
  95
  96 def fix_sys_path(extra_extra_paths=()):
  97   """Fix the sys.path to include our extra paths."""
  98   sys.path = EXTRA_PATHS + list(extra_extra_paths) + sys.path
  99
 100
 101 def run_file(file_path, globals_):
 102   """Execute the given script with the passed-in globals.
 103
 104   Args:
 105     file_path: the path to the wrapper for the given script. This will usually
 106       be a copy of this file.
 107     globals_: the global bindings to be used while executing the wrapped script.
 108   """
 109   script_name = os.path.basename(file_path)
 110
 111   sys.path = (_PATHS.script_paths(script_name) +
 112               _PATHS.scrub_path(script_name, sys.path))
 113
 114
 115
 116
 117
 118
 119
 120   if 'google' in sys.modules:
 121     del sys.modules['google']
 122
 123   execfile(_PATHS.script_file(script_name), globals_)
 124
 125
 126 if __name__ == '__main__':
 127   run_file(__file__, globals())