“无法在Google App Engine灵活环境中导入google / appengine / ext / deferred / handler.py”

Question

我使用App Engine Flexible Environment（以前称为托管虚拟机），最近升级到最新的gcloud SDK。 它包括一些新的错误：

ERROR: (gcloud.preview.app.deploy) Error Response: [400] Invalid
character
in filename: lib/setuptools/script (dev).tmpl

ERROR: The [application] field is specified in file [.../app.yaml]. This field is not used
by gcloud and must be removed. Project name should instead be
specified either by `gcloud config set project MY_PROJECT` or by
setting the `--project` flag on individual command executions.

ERROR: (gcloud.preview.app.deploy) There is a Dockerfile in the
current directory, and the runtime field in
.../app.yaml is currently set to
[runtime: python27]. To use your Dockerfile to build a custom runtime,
set the runtime field in .../app.yaml
to [runtime: custom]. To continue using the [python27] runtime, please
omit the Dockerfile from this directory.

我修复了这些错误并且能够再次发布，但是开始看到这样的错误：

Failed to import google/appengine/ext/deferred/handler.py
Traceback (most recent call last):
  File "/home/vmagent/python_vm_runtime/google/appengine/ext/vmruntime/meta_app.py", line 549, in GetUserAppAndServe
    app, mod_file = self.GetUserApp(script)
  File "/home/vmagent/python_vm_runtime/google/appengine/ext/vmruntime/meta_app.py", line 410, in GetUserApp
    app = _AppFrom27StyleScript(script)
  File "/home/vmagent/python_vm_runtime/google/appengine/ext/vmruntime/meta_app.py", line 270, in _AppFrom27StyleScript
    app, filename, err = wsgi.LoadObject(script)
  File "/home/vmagent/python_vm_runtime/google/appengine/runtime/wsgi.py", line 85, in LoadObject
    obj = __import__(path[0])
ImportError: Import by filename is not supported.

Answer 1

经过一番挖掘后，我想出了发生了什么。 即，处理此代码的代码：

builtins:
- remote_api: on
- appstats: on
- deferred: on

被管理的虚拟机破坏了。 正确的解决方法是消除这些并内联内置包含。 您可以在这些子目录中找到相关的包含：

在我的例子中，它是添加到我的handlers:指令：

- url: /_ah/queue/deferred
  script: google.appengine.ext.deferred.application
  login: admin
- url: /_ah/stats.*
  script: google.appengine.ext.appstats.ui.app
- url: /_ah/remote_api(/.*)?
  script: google.appengine.ext.remote_api.handler.application

至于为什么，你可以在这里了解更多。 在google / appengine / ext / builtins / __ init __。py＃L92中 ，它尝试使用app.yaml中的runtime:字段查找相关的包含文件。 这意味着它先前查找了deferred / include-python27.yaml，它现在尝试查找deferred / include-custom.yaml（由于修复上面的错误）并失败。 所以现在它默认为deferred / include.yaml，它按路径名而不是模块名列出了包含脚本。 然后在python27-custom-VM设置中中断（因为它期望/需要模块名称）