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Google云数据存储模拟器不使用默认凭据

google-cloud-datastore google-cloud-platform python

Sam · 技术社区 · 7 年前

每 Google's Cloud Datastore Emulator installation instructions ,我能够在猛击 gcloud beta emulators datastore start --project gramm-id .

我还设置了环境变量, per the instructions ,在另一个终端 $(gcloud beta emulators datastore env-init) 并验证了它们的定义。

但是,当我运行python脚本向本地数据存储添加实体时,使用以下代码:

from google.cloud import datastore

print(os.environ['DATASTORE_HOST'])          # output: http://localhost:8081
print(os.environ['DATASTORE_EMULATOR_HOST']) # output: localhost:8081


client = datastore.Client('gramm-id')
kind = 'Task'
name = 'simpleTask'

task_key = client.key(kind, name)
task = client.Enity(key=task_key)
task['description'] = 'Buy milk'
client.put(task)

Traceback (most recent call last):
  File "tools.py", line 237, in <module>
    client = datastore.Client('gramm-id')
  File "/home/.../lib/python3.6/site-packages/google/cloud/datastore/client.py", line 205, in __init__
    project=project, credentials=credentials, _http=_http)
... long stack trace ....
  File "/home/.../lib/python3.6/site-packages/google/auth/_default.py", line 306, in default
    raise exceptions.DefaultCredentialsError(_HELP_MESSAGE)
google.auth.exceptions.DefaultCredentialsError: Could not automatically determine credentials. Please set GOOGLE_APPLICATION_CREDENTIALS or explicitly create credentials and re-run the application. For more information, please see https://developers.google.com/accounts/docs/application-default-credentials.

我想我不需要 create a GCP service account and provide access credentials

我的系统:

Ubuntu 18.04版
谷歌云SDK 215.0.0
云数据存储模拟器2.0.2。

我错过了什么?

2 回复 | 直到 7 年前

Serge Hendrickx 7 年前

gcloud验证应用程序默认登录

这将提示您通过浏览器窗口登录,并为您正确设置GOOGLE应用程序凭据。 [1]

Dustin Ingram 7 年前

class EmulatorCreds(google.auth.credentials.Credentials):

    def __init__(self):
        self.token = b'secret'
        self.expiry = None

    @property
    def valid(self):
        return True

    def refresh(self, _):
        raise RuntimeError('Should never be refreshed.')

client = datastore.Client(
    project='gramm-id',
    credentials=EmulatorCreds() , 
    _http=requests.Session()  # Un-authorized
)

然而 it seems like this doesn't currently work GOOGLE_APPLICATION_CREDENTIALS