Azure Function App 不由事件中心触发

Azure Function App does not trigger by Event Hub

大家好。

我已经编写了 Python 函数来处理即将到达 EventHub 的 JSON 事件。这些事件是由 Debezium 生成的,这部分工作正常。当从 Visual Studio 代码在本地执行时,我的 python 代码也能正常工作。当我部署(使用 VSC)到 Azure Function App 时出现问题。似乎传入事件不会触发功能应用程序执行。

我做错了什么?

我的函数代码:

from typing import List
import logging
import json
import psycopg2

import azure.functions as func


def main(events: List[func.EventHubEvent]):
    #logging.info('Starting')
    conn = psycopg2.connect(database="RDSA", user='postgres', password='********', host='********.postgres.database.azure.com', port= '5432')
    #Creating a cursor object using the cursor() method
    cursor = conn.cursor()

    for event in events:
        row = json.loads(event.get_body().decode('utf-8'))
        #logging.info('Python EventHub trigger processed an event: %s',
        #                event.get_body().decode('utf-8'))
        rowDepartmentId=row["payload"]["after"]["departmentid"]
        rowDepartmentName=row["payload"]["after"]["name"]
        rowDepartmentGroupName=row["payload"]["after"]["groupname"]
        rowModifiedDate=row["payload"]["after"]["modifieddate"]

        SQL="""INSERT INTO CDCSTAGE.TF_DEPARTMENT (departmentid, \"name\", groupname, modifieddate)
             VALUES (%s, '%s', '%s', to_timestamp(%s / 1000000));""" % (rowDepartmentId, rowDepartmentName, rowDepartmentGroupName, rowModifiedDate)

        logging.info('=========== New record in DB: =============')
        logging.info('Department name: %s', row["payload"]["after"]["name"])
        logging.info('Department group: %s', row["payload"]["after"]["groupname"])
        logging.info('Modified date: %s', row["payload"]["after"]["modifieddate"])
        logging.info('SQL generated: %s', SQL)
        logging.info('===========================================')
            #Executing an MYSQL function using the execute() method
        cursor.execute(SQL)

    #Closing the connection
    conn.commit() 
    cursor.close()
    conn.close()

function.json

{
  "scriptFile": "__init__.py",
  "bindings": [
    {
      "type": "eventHubTrigger",
      "name": "events",
      "direction": "in",
      "eventHubName": "adventureworks.humanresources.department",
      "connection": "AazureEventhubKafka_RootManageSharedAccessKey_EVENTHUB",
      "cardinality": "many",
      "consumerGroup": "$Default",
      "dataType": "binary"
    }
  ]
}

Trigger enabled on Azure portal

当 Function App 在本地 运行 并且在部署到 Azure 时未被触发时,通常的问题是由于应用程序设置中缺少连接字符串。您本地项目中的 local.settings.json 文件中的设置应与 Azure 中的函数应用程序中的应用程序设置相同。通过 VS Code 部署时,您可以 publish them 到 Azure。您可以通过门户添加缺少的连接,也可以通过配置 -> 新应用程序设置。