Google Cloud Datastore Emulator不使用默认凭据

Question

根据Google的Cloud Datastore Emulator安装说明,我能够在bash终端窗口中安装和运行模拟器而不会出现问题gcloud beta emulators datastore start --project gramm-id.

我还根据说明在另一个终端设置了环境变量,$(gcloud beta emulators datastore env-init)并验证了它们的定义.

但是,当我运行我的python脚本以使用以下代码将实体添加到本地数据存储区时:

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)

我收到错误:

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.

我认为我不需要创建GCP服务帐户并提供访问凭据以在我的计算机上使用数据存储模拟器.

我的系统:

• Ubuntu 18.04
• Anaconda python 3.6.6
• Google Cloud SDK 215.0.0
• cloud-datastore-emulator 2.0.2.

我错过了什么？

Answer 1

gcloud auth application-default login

这将提示您通过浏览器窗口登录,并为您正确设置GOOGLE_APPLICATION_CREDENTIALS.[1]