Python 3.x Google PubSub订户与Google SDM API（嵌套设备）的问题

所以，我被卡住了。这可能会很长，因为我想确定达到这一点所做的全部（或大部分）工作：

背景：想为Raspberry PI创建一个应用程序，该应用程序可以访问嵌套的设备套件（门铃、恒温器等）并对其进行操作。我现在在笔记本电脑上的Ubuntu虚拟机上做这件事

我所做的：

按照谷歌提供的步骤创建了一个设备访问项目

还创建了一个GCP项目（与上面不同），以便能够设置OAuth和订阅设置

设备访问项目使用GCP项目中的OAuth，即设备访问项目有一个引用GCP项目OAuth的字段

完成设备访问项目步骤，通过浏览器页面授予权限，直至我创建并使用授权代码，并获得第一个访问令牌。我能够执行CURL命令来检索嵌套设备特征，甚至可以执行rtspurl来访问相机流

因此，我已经完成了一半，因为我可以通过使用OAuth访问令牌与设备（RESTAPI）交互。但我想做的是能够对来自设备的事件做出反应，这需要PubSub的交互性。这就是我被困的地方

额外步骤：我还在GCP凭据中创建了一个服务帐户，因为我在文档中看到可能需要它，而GOOGLE算法需要一个GOOGLE_APPLICATION_Credentials环境变量，该变量包含服务帐户的已下载凭据，并包含到json文件中。所以检查

在设置设备访问项目时，创建了一个PubSub主题。在GCP控制台中，我为GCP项目创建了相应的订阅，并手动将其引用到作为设备访问项目一部分创建的主题（上面的步骤）

文档中提到，第一次通过RESTAPI与OAuth访问令牌交互时，pubsub功能就可用了。注意：我可以从GCP控制台中的PubSub订阅页面确认“查看消息”。我能够“拉”消息，并看到消息出现在订阅中。我知道，通过提取消息，我暂时阻止它们出现在其他队列中，但我想检查消息是否能够在订阅中填充

嗯。因此，不，我想编写代码来访问pubsub订阅，并围绕这些事件消息创建我的应用程序（或其中的一部分）。这就是我被困了两天的地方

我已经基于google提供的方法创建了一个python脚本（我不介意包含ID，因为这不是私有的）

结果如下：

projtest - listening for messages on: projects/nestcontroller-299520/subscriptions/NestControlSub

subscription_id : NestControlSub

Background thread did not exit.
ERROR:root:Exception in callback <bound method ResumableBidiRpc._on_call_done of <google.api_core.bidi.ResumableBidiRpc object at 0x7f042ae47fa0>>: ValueError('Cannot invoke RPC: Channel closed!')

这立即导致以下“无效授权：未找到帐户”错误，该错误不断重复，直到我取消脚本

ERROR:grpc._plugin_wrapping:AuthMetadataPluginCallback "<google.auth.transport.grpc.AuthMetadataPlugin object at 0x7f7188d17d30>" raised exception!
Traceback (most recent call last):
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/grpc/_plugin_wrapping.py", line 77, in __call__
    self._metadata_plugin(
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/auth/transport/grpc.py", line 86, in __call__
    callback(self._get_authorization_headers(context), None)
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/auth/transport/grpc.py", line 72, in _get_authorization_headers
    self._credentials.before_request(
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/auth/credentials.py", line 133, in before_request
    self.refresh(request)
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/oauth2/service_account.py", line 361, in refresh
    access_token, expiry, _ = _client.jwt_grant(request, self._token_uri, assertion)
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/oauth2/_client.py", line 153, in jwt_grant
    response_data = _token_endpoint_request(request, token_uri, body)
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/oauth2/_client.py", line 124, in _token_endpoint_request
    _handle_error_response(response_body)
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/oauth2/_client.py", line 60, in _handle_error_response
    raise exceptions.RefreshError(error_details, response_body)
google.auth.exceptions.RefreshError: ('invalid_grant: Invalid grant: account not found', '{"error":"invalid_grant","error_description":"Invalid grant: account not found"}')
INFO:google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager:Observed non-terminating stream error 503 Getting metadata from plugin failed with error: ('invalid_grant: Invalid grant: account not found', '{"error":"invalid_grant","error_description":"Invalid grant: account not found"}')
INFO:google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager:Observed recoverable stream error 503 Getting metadata from plugin failed with error: ('invalid_grant: Invalid grant: account not found', '{"error":"invalid_grant","error_description":"Invalid grant: account not found"}')
INFO:google.api_core.bidi:Re-established stream
INFO:google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager:Observed non-terminating stream error 503 Getting metadata from plugin failed with error: ('invalid_grant: Invalid grant: account not found', '{"error":"invalid_grant","error_description":"Invalid grant: account not found"}')
INFO:google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager:Observed recoverable stream error 503 Getting metadata from plugin failed with error: ('invalid_grant: Invalid grant: account not found', '{"error":"invalid_grant","error_description":"Invalid grant: account not found"}')

错误：grpc.\u plugin\u wrapping:AuthMetadataPluginCallback“”引发异常！
回溯（最近一次呼叫最后一次）：
文件“/home/christian/PythonProjects/google cloud pubsub/venv/lib/python3.8/site packages/grpc/_plugin_wrapping.py”，第77行，在调用中__
self.\u元数据\u插件(
文件“/home/christian/PythonProjects/google cloud pubsub/venv/lib/python3.8/site packages/google/auth/transport/grpc.py”，第86行，in_ucall__
回调（self.\u获取\u授权\u头（上下文），无）
文件“/home/christian/PythonProjects/google cloud pubsub/venv/lib/python3.8/site packages/google/auth/transport/grpc.py”，第72行，在“获取授权”标题中
自我认证。在请求之前(
文件“/home/christian/PythonProjects/google cloud pubsub/venv/lib/python3.8/site packages/google/auth/credentials.py”，第133行，在请求之前
自我刷新（请求）
文件“/home/christian/PythonProjects/google cloud pubsub/venv/lib/python3.8/site packages/google/oauth2/service_account.py”，第361行，刷新
访问令牌，到期，客户端.jwt\u授权（请求，自.\u令牌\u uri，断言）
jwt_grant中的文件“/home/christian/PythonProjects/google cloud pubsub/venv/lib/python3.8/site packages/google/oauth2/_client.py”，第153行
响应\数据=\令牌\端点\请求（请求，令牌\ uri，正文）
文件“/home/christian/PythonProjects/google cloud pubsub/venv/lib/python3.8/site packages/google/oauth2/_client.py”，第124行，在_token_endpoint_请求中
_句柄错误响应（响应体）
文件“/home/christian/PythonProjects/google cloud pubsub/venv/lib/python3.8/site packages/google/oauth2/\u client.py”，第60行，在“handle\u error\u response”中
引发异常。刷新错误（错误详细信息、响应正文）
google.auth.exceptions.RefreshError:（'invalid_grant:invalid grant:account not found'，'{“error”：“invalid_grant”，“error_description”：“invalid grant:account not found”}）
信息：google.cloud.pubsub\u v1.subscriber.\u协议.流式传输\u pull\u管理器：观察到的非终止流错误503从插件获取元数据失败，错误为：（'invalid\u grant:invalid grant:account not found'，'{“error”：“invalid\u grant”，“error\u description”：“invalid grant:account not found”}）
信息：google.cloud.pubsub\u v1.subscriber.\u协议.流媒体\u pull\u管理器：观察到的可恢复流错误503从插件获取元数据失败，错误为：（'invalid\u grant:invalid grant:account not found'，'{“error”：“invalid\u grant”，“error\u description”：“invalid grant:account not found”}）
信息：google.api_core.bidi：重建流
信息：google.cloud.pubsub\u v1.subscriber.\u协议.流式传输\u pull\u管理器：观察到的非终止流错误503从插件获取元数据失败，错误为：（'invalid\u grant:invalid grant:account not found'，'{“error”：“invalid\u grant”，“error\u description”：“invalid grant:account not found”}）
信息：google.cloud.pubsub\u v1.subscriber.\u协议.流\u拉\u管理器：观察到可恢复流错误503从插件获取元数据失败，错误为：（'invalid\u grant:invalid
    project_id = 'nestcontroller-299520'
    subscription_id = 'NestControlSub'
    topic_id = 'projects/sdm-prod/topics/enterprise-5a0f7c4e-d20d-4e56-968d-c6239936a3b0'


    def callback(message, event):
        logger.info(message)
        event.set()

    subscriber = pubsub_v1.SubscriberClient()

    event = Event()

    def callback_wrapper(message):
        callback(message, event)

    future = subscriber.subscribe('subscription/path', callback=callback_wrapper)

    event.wait()
    logger.exception('Got event. Shutting down.')
    future.cancel()
    exit(1) 

ERROR:grpc._plugin_wrapping:AuthMetadataPluginCallback "<google.auth.transport.grpc.AuthMetadataPlugin object at 0x7f7188d17d30>" raised exception!
Traceback (most recent call last):
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/grpc/_plugin_wrapping.py", line 77, in __call__
    self._metadata_plugin(
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/auth/transport/grpc.py", line 86, in __call__
    callback(self._get_authorization_headers(context), None)
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/auth/transport/grpc.py", line 72, in _get_authorization_headers
    self._credentials.before_request(
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/auth/credentials.py", line 133, in before_request
    self.refresh(request)
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/oauth2/service_account.py", line 361, in refresh
    access_token, expiry, _ = _client.jwt_grant(request, self._token_uri, assertion)
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/oauth2/_client.py", line 153, in jwt_grant
    response_data = _token_endpoint_request(request, token_uri, body)
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/oauth2/_client.py", line 124, in _token_endpoint_request
    _handle_error_response(response_body)
  File "/home/christian/PythonProjects/google-cloud-pubsub/venv/lib/python3.8/site-packages/google/oauth2/_client.py", line 60, in _handle_error_response
    raise exceptions.RefreshError(error_details, response_body)
google.auth.exceptions.RefreshError: ('invalid_grant: Invalid grant: account not found', '{"error":"invalid_grant","error_description":"Invalid grant: account not found"}')
INFO:google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager:Observed non-terminating stream error 503 Getting metadata from plugin failed with error: ('invalid_grant: Invalid grant: account not found', '{"error":"invalid_grant","error_description":"Invalid grant: account not found"}')
INFO:google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager:Observed recoverable stream error 503 Getting metadata from plugin failed with error: ('invalid_grant: Invalid grant: account not found', '{"error":"invalid_grant","error_description":"Invalid grant: account not found"}')
INFO:google.api_core.bidi:Re-established stream
INFO:google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager:Observed non-terminating stream error 503 Getting metadata from plugin failed with error: ('invalid_grant: Invalid grant: account not found', '{"error":"invalid_grant","error_description":"Invalid grant: account not found"}')
INFO:google.cloud.pubsub_v1.subscriber._protocol.streaming_pull_manager:Observed recoverable stream error 503 Getting metadata from plugin failed with error: ('invalid_grant: Invalid grant: account not found', '{"error":"invalid_grant","error_description":"Invalid grant: account not found"}')