google-app-engine - devappserver2、remote_api 和 --default_partition

Question

要使用原始的 dev_appserver 在本地访问远程数据存储，我会设置 --default_partition=s，如前所述 here

2013 年 3 月，Google 将 devappserver2 设为默认开发服务器，但它不支持 --default_partition 导致原来的，可怕的:

BadRequestError: app s~appname cannot access app dev~appname's data

似乎前几个请求已正确处理

os.environ["APPLICATION_ID"] == 's~appname'

随后的请求导致调用/_ah/warmup 然后

os.environ["APPLICATION_ID"] == 'dev~appname'

文档特别提到了相关主题，但似乎是针对 dev_appserver here 的

Warning! Do not get the App ID from the environment variable. The development server simulates the production App Engine service. One way in which it does this is to prepend a string (dev~) to the APPLICATION_ID environment variable, which is similar to the string prepended in production for applications using the High Replication Datastore. You can modify this behavior with the --default_partition flag, choosing a value of "" to match the master-slave option in production. Google recommends always getting the application ID using the get_application_id() method, and never using the APPLICATION_ID environment variable.

Answer 1

你可以做以下肮脏的小把戏:

from google.appengine.datastore.entity_pb import Reference

DEV = os.environ['SERVER_SOFTWARE'].startswith('Development')

def myApp(*args): 
    return os.environ['APPLICATION_ID'].replace("dev~", "s~")

if DEV:
    Reference.app = myApp