AppEngine：没有名为 pyasn1.compat.binary 的模块

Question

我在访问 AppEngine 服务器时不断收到以下错误：

ERROR    2017-09-20 07:16:06,978 wsgi.py:263] 
Traceback (most recent call last):
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/runtime/wsgi.py", line 240, in Handle
    handler = _config_handle.add_wsgi_middleware(self._LoadHandler())
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/runtime/wsgi.py", line 299, in _LoadHandler
    handler, path, err = LoadObject(self._handler)
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/runtime/wsgi.py", line 96, in LoadObject
    __import__(cumulative_path)
  File "/home/dclochri/Projects/react-seed/server/main.py", line 3, in <module>
    from controllers import organization_controller
  File "/home/dclochri/Projects/react-seed/server/controllers/organization_controller.py", line 4, in <module>
    import rest_controller as rest
  File "/home/dclochri/Projects/react-seed/server/controllers/rest_controller.py", line 4, in <module>
    import google.oauth2.id_token
  File "/home/dclochri/Projects/react-seed/lib/google/oauth2/id_token.py", line 22, in <module>
    from google.auth import jwt
  File "/home/dclochri/Projects/react-seed/lib/google/auth/jwt.py", line 53, in <module>
    from google.auth import _service_account_info
  File "/home/dclochri/Projects/react-seed/lib/google/auth/_service_account_info.py", line 22, in <module>
    from google.auth import crypt
  File "/home/dclochri/Projects/react-seed/lib/google/auth/crypt/__init__.py", line 39, in <module>
    from google.auth.crypt import rsa
  File "/home/dclochri/Projects/react-seed/lib/google/auth/crypt/rsa.py", line 17, in <module>
    from google.auth.crypt import _python_rsa
  File "/home/dclochri/Projects/react-seed/lib/google/auth/crypt/_python_rsa.py", line 27, in <module>
    from pyasn1.codec.der import decoder
  File "/home/dclochri/Projects/react-seed/lib/pyasn1/codec/der/decoder.py", line 7, in <module>
    from pyasn1.type import univ
  File "/home/dclochri/Projects/react-seed/lib/pyasn1/type/univ.py", line 11, in <module>
    from pyasn1.compat import octets, integer, binary
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/python/runtime/sandbox.py", line 1132, in load_module
    raise ImportError('No module named %s' % fullname)
ImportError: No module named pyasn1.compat.binary
INFO     2017-09-20 07:16:06,982 module.py:821] default: "OPTIONS /rest/organizations/create HTTP/1.1" 500 -

我的 lib 目录包含 pyasn1 (v0.3.5)，pysasn1 有一个 compat 模块 binary.py。看起来 pysasn1 是由 google-auth 模块作为依赖项安装的（请参阅下面的 requirements.txt）。按照 GAE sample.

的建议，使用 pip install -r requirements.txt -t lib 安装依赖项

到目前为止，我的代码几乎没有偏离将 Firebase 与 GAE 一起使用的示例文档 here。

以下是我正在使用的一些片段：

Python: 2.7.12

gcloud 版本：

Google Cloud SDK 171.0.0
alpha 2017.09.11
app-engine-python 1.9.60
beta 2017.09.11
bq 2.0.25
core 2017.09.11
gsutil 4.27

requirements.txt

google-auth==1.1.0
requests==2.18.4
requests-toolbelt==0.7.1

rest_controller.py（片段）

import json
import webapp2
import google.auth.transport.requests
import google.oauth2.id_token
import requests_toolbelt.adapters.appengine

class RestHandler(webapp2.RequestHandler):
    def dispatch(self):
        """Middleware for all the routes."""
        # Verify the user is authenticated for each request.
        if not self.is_authorized() and self.request.method != 'OPTIONS':
            self.response.set_status(401)
            self.response.write('Unauthorized')
        else:
            super(RestHandler, self).dispatch()

    def get_claims(self):
        """
        Verify the Firebase credentials on the server side via the
        bearer's token.
        """
        auth_headers = self.request.headers['Authorization']
        id_token = auth_headers.split(' ').pop()
        return google.oauth2.id_token.verify_firebase_token(
            id_token, HTTP_REQUEST)

    def get_user_id(self):
        claims = self.get_claims()
        return claims['sub']

    def is_authorized(self):
        """
        Determines if the user is authorized.
        NOTE: We don't have a server-side session, so we are operating based on
        the user's client token. We are basically verifying that the client
        Firebase token is valid by checking it via a server-side request.
        """
        if 'Authorization' in self.request.headers:
            if self.get_claims():
                return True

        return False

目录结构：

/
  lib/
    (deps from requirements.txt here)
  server/
    controllers/
      (controllers here)
    models/
      (models here)
    main.py
  src/
    (client code here - js, css, etc)
  app.yaml
  appengine_config.py

这发生在 OSX Yosemite 和 Ubuntu 16.04。进口有什么问题吗？ oauth 模块有问题吗？

Answer 1

非常感谢Dan Cornilescu！结果是我的 app.yaml 配置是罪魁祸首，特别是 skip_files 指令。

错误的配置如下所示：

skip_files:
- ^(.git/.*)
- ^.*bin(/.*)?
- ^.*node_modules(/.*)?
- ^.*public(/.*)?
- ^.*src(/.*)?
- ^env$
- ^(.*/)?.*\.pyc$

更新后的配置如下所示：

# Skip any non-essential files for uploading during deploys.
skip_files:
# Defaults, see: https://cloud.google.com/appengine/docs/standard/python/config/appref#skip_files/
- ^(.*/)?#.*#$
- ^(.*/)?.*~$
- ^(.*/)?.*\.py[co]$
- ^(.*/)?.*/RCS/.*$
- ^(.*/)?\..*$
# Custom
- ^(.*/)?.*/bin/.*$
- ^(.*/)?.*/env/.*$
- ^(.*/)?.*/none_modules/.*$
- ^(.*/)?.*/public/.*$
- ^(.*/)?.*/src/.*$

所以错误的正则表达式和跳过错误文件的组合破坏了本地应用程序服务器，修复它使它恢复正常并再次运行。

AppEngine：没有名为 pyasn1.compat.binary 的模块

AppEngine: No module named pyasn1.compat.binary

python

google-app-engine

oauth-2.0

webapp2

firebase-authentication