使用 App Engine 配置 Remote_api

Question

使用 Python，我正在尝试连接到我的 AppEngine 应用程序的 remote_api 处理程序，但我不断收到错误消息。我想要做的是设置 remote_api 存根以通过它路由数据库调用并直接访问我的应用程序的数据存储。因此，首先，我导入 remote_api 库，然后在存根模块上调用 ConfigureRemoteApi，并尝试使用对远程数据存储的调用。下面是一些示例代码：

from google.appengine.ext.remote_api import remote_api_stub

def test_remote_api():
    # This function is called when I want to use the remote api instead of the local datastore access
    remote_api_stub.ConfigureRemoteApi('myapp.appspot.com', '/_ah/remote_api', auth_func, '')

def auth_func:
    # This actually returns a tuple with my credentials to skip the console input
    return ('username', 'password')

好的，现在，我已经使用 remote_api_shell.py 测试了我的登录信息和应用名称，但我收到如下错误：

File "C:\Program Files(x86)\Google\google_appengine\google\appengine\tools\dev_appserver_blobstore.py", line 79, in GetBlobStorage
return apiproxy_stub_map.apiproxy.GetStub('blobstore').storage
AttributeError: 'RemoteStub' object has no attribute 'storage'

然后我得到一个 404: Not Found 从应用程序，我知道这是错误的，因为从 Web 访问应用程序确实给了我结果。我需要做些什么来设置 remote_api_stub 以免出现此错误？

谢谢！

Answer 1

如果您只对访问数据存储感兴趣，则可以使用 testBed 避免存根错误：

# First, create an instance of the Testbed class.
myTestBed = testbed.Testbed()

# Then activate the testbed, which prepares the service stubs for use.
myTestBed.activate()

# Next, declare which service stubs you want to use.
myTestBed.init_blobstore_stub()
myTestBed.init_logservice_stub()

Answer 2

假设您现在正在使用高复制数据存储...

你的app_id可能是错误的，还需要传递地址参数。不久前，我在阅读 appengine 的 oreilly 书时突然想到了这一点（书严重过时，不推荐）

def attach_to_app(app_id, user=None, password=None, path=None, address=None):
    """
    attaches to app_id instance at address (default: <app_id>.appspot.com)

    if you don't specify a user/password you will be prompted for one

    if you don't specify an address it is assumed to be
    <app_id>.appspot.com

    path: path to remote_api handler, if not
    specified, will use /_ah/remote_api 
    """
    path = path or "/_ah/remote_api"

    if not address:
        address = "%s.appspot.com" % app_id

    init_remote_api(app_id, path, address, user=user, password=password)




def auth_func():
    """
    function to prompt user for credentials
    """
    email_address = raw_input("Email Address: ")
    password = getpass.getpass("Password: ")
    return email_address, password


def init_remote_api(app_id, path, address, user=None, password=None):
    """
    generic wrapper to initialize the remoteapi for a given path

    required
    =========
    app_id : the app_id of the application to connect to
    path: the path to the remote_api handler ex: /_ah/remote_api
    address: server to connect to ex: myapp.appspot.com

    if user and password are not specified you will be prompted on
    connection if needed
    """
    if user and password:
        def my_auth():
            return (user, password)
    else:
        my_auth = auth_func

    remote_api_stub.ConfigureRemoteApi(app_id, path, my_auth, address)
    remote_api_stub.MaybeInvokeAuthentication()
    os.environ["SERVER_SOFTWARE"] = "Development (remote_api)/1.0"

# example
APP_ID = "s~myapp" # when hrds was introduced it became necessary to specify app_id and address note the "s~..."
ADDRESS = "myapp.appspot.com"
attach_to_app(APP_ID, address=ADDRESS)