将应用程序移植到 App Engine 柔性环境后的数据存储区 RPCFailedError

Question

我正在尝试将 Python 应用程序从 App Engine 标准环境移植到 App Engine 柔性环境。在 the directions in the App Engine documentation 之后，我将我的 app.yaml 文件更改为使用 "python-compat" 模式，如图所示：

service: default
runtime: python-compat
api_version: 1
vm: true
threadsafe: true
instance_class: F2

inbound_services:
- warmup

builtins:
- remote_api: on

env_variables:
  GCLOUD_PROJECT: the-name-of-my-project

部署后，任何从应用程序（使用 NDB api）调用数据存储的尝试都会导致以下引用（t运行cated）：

File "/env/local/lib/python2.7/site-packages/google/appengine/datastore/datastore_rpc.py" in check_rpc_success
  1371.       rpc.check_success()
File "/env/local/lib/python2.7/site-packages/google/appengine/api/apiproxy_stub_map.py" in check_success
  579.       self.__rpc.CheckSuccess()
File "/env/local/lib/python2.7/site-packages/google/appengine/ext/vmruntime/vmstub.py" in _WaitImpl
  312.         raise self._ErrorException(*_DEFAULT_EXCEPTION)

Exception Type: RPCFailedError at /volume-list/
Exception Value: The remote RPC to the application server failed for call datastore_v3.RunQuery().

知道问题出在哪里吗？据我所知，App Engine 文档没有提供使用 python-compat 运行-time 设置 NDB 的特殊说明。

Answer 1

我这周刚运行遇到这个错误，在调试它并使用 App Engine 支持后，找到了答案。

看我的，或者直接在appengine_config.py中添加以下代码：

try:
    import appengine.ext.vmruntime.vmstub as vmstub
except ImportError:
    pass
else:
    if isinstance(vmstub.DEFAULT_TIMEOUT, (int, long)):
        # Newer requests libraries do not accept integers as header values. 
        # Be sure to convert the header value before sending. 
        # See Support Case ID 11235929.
        vmstub.DEFAULT_TIMEOUT = bytes(vmstub.DEFAULT_TIMEOUT)

将应用程序移植到 App Engine 柔性环境后的数据存储区 RPCFailedError

Datastore RPCFailedError after porting an app to App Engine Flexible environment

google-app-engine

google-cloud-datastore

google-app-engine-python

app-engine-flexible