Azure IoT中心操作监控 [英] Azure IoT Hub Operations Monitoring

问题描述

我有一个将设备连接到的Azure IoT中心.我想启用监视功能以监视与集线器连接和断开连接的设备.

I have an Azure IoT hub that I connect devices to. I want to enable monitoring to monitor devices connecting and disconnecting from the hub.

我已为Iot集线器的监视类别中的连接上启用详细":

I've enabled Verbose on Connections in the monitoring categories for my Iot hub:

我的设备连接到我的集线器并显示在设备资源管理器中:

My devices connect to my Hub and show in Device Explorer:

然后，我设置了一个Azure函数，以将我的数据从操作监控日志记录到Azure SQL数据库:

I then have an Azure Function set to log my data from the Operations Monitoring to an Azure SQL db:

using System;
using System.Configuration;
using System.Data.SqlClient;
using Newtonsoft.Json;

public static void Run(string myEventHubMessage, TraceWriter log)
{
    log.Info(myEventHubMessage);

    try
    {
        var connectionString = ConfigurationManager.ConnectionStrings["iotAzureSQLDb"].ConnectionString;

        log.Info(connectionString);
        var message = JsonConvert.DeserializeObject<MonitoringMessage>(myEventHubMessage);

        using (var connection = new SqlConnection(connectionString))
        {
            var sqlStatement = "insert into [dbo].[DeviceStatuses] " +
                                "(DeviceId, ConnectionStatus, ConnectionUpdateTime)" +
                                "values " +
                                "(@DeviceId, @ConnectionStatus, @ConnectionUpdateTime)";
            using (var dataCommand = new SqlCommand(sqlStatement, connection))
            {
                dataCommand.Parameters.AddWithValue("@ConnectionStatus", message.operationName);
                dataCommand.Parameters.AddWithValue("@DeviceId", message.deviceId);
                dataCommand.Parameters.AddWithValue("@ConnectionUpdateTime", message.time);

                connection.Open();
                dataCommand.ExecuteNonQuery();
                connection.Close();

                log.Info($"Device {message.deviceId} changed state: {message.operationName}");
            }
        }
    }
    catch (Exception ex)
    {
        log.Info(ex.Message);
    }
}

public class MonitoringMessage
{
    public string deviceId { get; set; }
    public string operationName { get; set; }
    public int? durationMs { get; set; }
    public string authType { get; set; }
    public string protocol { get; set; }
    public DateTimeOffset? time { get; set; }
    public string category { get; set; }
    public string level { get; set; }
    public int? statusCode { get; set; }
    public int? statusType { get; set; }
    public string statusDescription { get; set; }
}

如果在操作监控中启用设备标识操作，则会记录创建事件.因此，我确信该功能的输入是正确的.但是，为连接什么都没有创建??

If I enable Device Identity Operations in Operations Monitoring, I get create events being logged. So I'm confident the inputs to the function is correct. However, nothing is ever created for Connections???

我还可以向已连接的设备发送消息.我只是没有看到任何有关连接/断开连接的事件.

I can also send messages to my connected devices fine. I'm just seeing no events for connections / disconnections.

我还尝试过创建流分析并在一段时间内对输入进行采样，直到我知道自己有连接/断开连接，却一无所获.

I've also tried creating a Stream Analytics and sampling the input for a period where I know I have connections / disconnections and nothing is being found.

推荐答案

我已通过强制设备在开发环境中通过MQTT连接来解决此问题，现在我看到它可以连接和断开连接.

I have resolved this by forcing my device to connect over MQTT in the dev environment and now I see it connecting and disconnecting.

不幸的是，我无法在生产中使用MQTT.

Unfortunately I can't use MQTT in production.

有人知道是否只有在MQTT而非AMQP中才可能发生连接/断开事件吗?

Does anyone know if Connection / Disconnection events are only possible in MQTT as opposed to AMQP?

这篇关于Azure IoT中心操作监控的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！