添加EventHubTrigger后Azure Functions全部消失问题求助

使用Azure学生套餐的弹性消耗计划开发时遇到以下问题：

• 仅添加默认httpTrigger时，函数可正常被识别并运行；
• 一旦添加eventHubTrigger，所有函数（包括原本正常的httpTrigger）都会从Azure平台中消失；
• 该问题已在两个不同的Function App中复现；
• GitHub Actions能完成代码部署，文件已成功上传，但Azure始终不将其识别为有效Python函数；
• 未改动文件/文件夹结构，默认文件未修改，requirements.txt已同步更新依赖；
• 已尝试多种排查方法，包括咨询AI工具，问题仍未解决。

import azure.functions as func
import logging
import json
import os
import uuid
from azure.cosmos import CosmosClient

app = func.FunctionApp(http_auth_level=func.AuthLevel.ANONYMOUS)


@app.route(route="http_trigger")
def http_trigger(req: func.HttpRequest) -> func.HttpResponse:
    logging.info('Python HTTP trigger function processed a request.')

    name = req.params.get('name')
    if not name:
        try:
            req_body = req.get_json()
        except ValueError:
            pass
        else:
            name = req_body.get('name')

    if name:
        return func.HttpResponse(f"Hello, {name}. This HTTP triggered function executed successfully.")
    else:
        return func.HttpResponse(
            "This HTTP triggered function executed successfully. Pass a name in the query string or in the request body for a personalized response.",
            status_code=200
        )


@app.event_hub_message_trigger(
    arg_name="azeventhub",
    event_hub_name="iothub-ehub-applied-io-55753535-0fd7cb3e46",
    connection="IOTHUB"
)
def eventhub_trigger1(azeventhub: func.EventHubEvent):
    logging.info('Python EventHub trigger processed an event.')

    # Initialize Cosmos inside the function so it only runs when triggered
    cosmos_client = CosmosClient(
        os.getenv("COSMOS_URL"),
        credential=os.getenv("COSMOS_KEY")
    )
    container = cosmos_client \
        .get_database_client(os.getenv("COSMOS_DB_NAME")) \
        .get_container_client(os.getenv("COSMOS_CONTAINER_NAME"))

    try:
        # 1. Decode message
        body = azeventhub.get_body().decode('utf-8')
        logging.info(f"Raw message: {body}")

        data = json.loads(body)

        # 2. Check if OPCUA data exists
        if "OPCUA" in data:
            opcua_data = data["OPCUA"]

            # 3. Prepare item for Cosmos DB
            item = {
                "id": str(uuid.uuid4()),
                "type": "OPCUA",
                **opcua_data
            }

            # 4. Insert into Cosmos DB
            container.create_item(body=item)
            logging.info(f"Inserted OPCUA data: {item}")

        else:
            logging.warning("Message is not OPCUA, skipping")

    except Exception as e:
        logging.error(f"Error processing event: {e}")

2026-05-05T12:12:12   [Information]   Executing StatusCodeResult, setting HTTP status code 200
2026-05-05T12:12:33   [Verbose]   Ping Status: {
  "hostState": "Running"
}
2026-05-05T12:12:33   [Information]   Executing StatusCodeResult, setting HTTP status code 200
2026-05-05T12:12:34   [Verbose]   AuthenticationScheme: WebJobsAuthLevel was not authenticated.
2026-05-05T12:12:34   [Verbose]   Authorization was successful.
2026-05-05T12:12:34   [Verbose]   Received request to drain the host
2026-05-05T12:12:34   [Information]   DrainMode mode enabled
2026-05-05T12:12:34   [Information]   Calling StopAsync on the registered listeners
2026-05-05T12:12:34   [Information]   Call to StopAsync complete, registered listeners are now stopped
2026-05-05T12:12:34   [Verbose]   AuthenticationScheme: WebJobsAuthLevel was not authenticated.
2026-05-05T12:12:34   [Verbose]   Authorization was successful.
2026-05-05T12:12:34   [Verbose]   Received request to drain the host
2026-05-05T12:12:34   [Information]   DrainMode mode enabled
2026-05-05T12:12:34   [Information]   Calling StopAsync on the registered listeners
2026-05-05T12:12:34   [Information]   Call to StopAsync complete, registered listeners are now stopped
2026-05-05T12:12:38   [Verbose]   Ping Status: {
  "hostState": "Running"
}
2026-05-05T12:12:38   [Information]   Executing StatusCodeResult, setting HTTP status code 200
2026-05-05T12:12:40   [Verbose]   AuthenticationScheme: WebJobsAuthLevel was not authenticated.
2026-05-05T12:12:40   [Verbose]   Authorization was successful.
2026-05-05T12:12:40   [Verbose]   Drain Status: 2, Activity Status: {
  "OutstandingInvocations": 0,
  "OutstandingRetries": 0
}
2026-05-05T12:12:40   [Verbose]   AuthenticationScheme: WebJobsAuthLevel was not authenticated.
2026-05-05T12:12:40   [Verbose]   Authorization was successful.
2026-05-05T12:12:40   [Verbose]   Drain Status: 2, Activity Status: {
  "OutstandingInvocations": 0,
  "OutstandingRetries": 0
}
2026-05-05T12:12:42   [Verbose]   Ping Status: {
  "hostState": "Running"
}
2026-05-05T12:12:42   [Information]   Executing StatusCodeResult, setting HTTP status code 200
2026-05-05T12:13:03   [Verbose]   Ping Status: {
  "hostState": "Running"

内容的提问来源于stack exchange，提问作者GewoonTijn7