MqttRpcProxyController.cs
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using HHECS.BllModel;
using HHECS.DAQShared.Dto;
using Microsoft.AspNetCore.Mvc;
using MQTTnet;
using MQTTnet.Extensions.Rpc;
using MQTTnet.Protocol;
using System.Text;
using System.Text.Json;
namespace HHECS.DAQServer.Controllers
{
/// <summary>
/// MqttRpc代理
/// </summary>
[Route("api/[controller]/[action]")]
[ApiController]
public class MqttRpcProxyController : ControllerBase
{
private readonly ILogger<MqttRpcProxyController> _logger;
public MqttRpcProxyController(ILogger<MqttRpcProxyController> logger)
{
_logger = logger;
}
/// <summary>
/// 读取数据
/// </summary>
/// <param name="clientId">采集端唯一标识</param>
/// <param name="equipmentAddressDatas">地址数据</param>
/// <param name="timeoutSeconds">超时时间（秒）</param>
/// <returns></returns>
[HttpPost("{clientId:guid}")]
public async Task<BllResult<List<EquipmentAddressData>>> ReadAsync(Guid clientId, List<EquipmentAddressData> equipmentAddressDatas, int timeoutSeconds = 10)
{
try
{
var mqttFactory = new MqttClientFactory();
using var client = mqttFactory.CreateMqttClient();
var mqttClientOptions = GetMqttClientOptions(HttpContext.Request);
var connectResult = await client.ConnectAsync(mqttClientOptions);
if (connectResult.ResultCode != MqttClientConnectResultCode.Success)
{
return BllResultFactory.Error<List<EquipmentAddressData>>("Mqtt服务连接失败");
}
var methodName = $"{clientId}_Read";
using var mqttRpcClient = mqttFactory.CreateMqttRpcClient(client);
var payload = JsonSerializer.Serialize(equipmentAddressDatas);
var requestResult = await mqttRpcClient.ExecuteAsync(TimeSpan.FromSeconds(timeoutSeconds), methodName, payload, MqttQualityOfServiceLevel.AtLeastOnce);
var result = JsonSerializer.Deserialize<BllResult<List<EquipmentAddressData>>>(Encoding.Default.GetString(requestResult));
return result;
}
catch (Exception ex)
{
_logger.LogError("An error occurred while reading data: {Message}", ex.Message);
return BllResultFactory.Error<List<EquipmentAddressData>>(ex.Message);
}
}
/// <summary>
/// 写入数据
/// </summary>
/// <param name="clientId">采集端唯一标识</param>
/// <param name="equipmentAddressDatas">地址数据</param>
/// <param name="timeoutSeconds">超时时间（秒）</param>
/// <returns></returns>
[HttpPost("{clientId:guid}")]
public async Task<BllResult> WriteAsync(Guid clientId, List<EquipmentAddressData> equipmentAddressDatas, int timeoutSeconds = 10)
{
try
{
var mqttFactory = new MqttClientFactory();
using var client = mqttFactory.CreateMqttClient();
var mqttClientOptions = GetMqttClientOptions(HttpContext.Request);
var connectResult = await client.ConnectAsync(mqttClientOptions);
if (connectResult.ResultCode != MqttClientConnectResultCode.Success)
{
return BllResultFactory.Error<List<EquipmentAddressData>>("Mqtt服务连接失败");
}
var methodName = $"{clientId}_Write";
using var mqttRpcClient = mqttFactory.CreateMqttRpcClient(client);
var payload = JsonSerializer.Serialize(equipmentAddressDatas);
var requestResult = await mqttRpcClient.ExecuteAsync(TimeSpan.FromSeconds(timeoutSeconds), methodName, payload, MqttQualityOfServiceLevel.AtLeastOnce);
var result = JsonSerializer.Deserialize<BllResult>(Encoding.Default.GetString(requestResult));
return result;
}
catch (Exception ex)
{
_logger.LogError("An error occurred while writing data: {Message}", ex.Message);
return BllResultFactory.Error(ex.Message);
}
}
private static MqttClientOptions GetMqttClientOptions(HttpRequest httpRequest)
{
var uri = string.Empty;
if (httpRequest.IsHttps)
{
uri = $"wss://{httpRequest.Host}/mqtt";
}
else
{
uri = $"ws://{httpRequest.Host}/mqtt";
}
var mqttClientOptions = new MqttClientOptionsBuilder()
//.WithWebSocketServer(o => o.WithUri("wss://broker.emqx.io:8084/mqtt"))
.WithWebSocketServer(o => o.WithUri(uri))
.WithProtocolVersion(MQTTnet.Formatter.MqttProtocolVersion.V500)
.WithTlsOptions(o =>
{
// The used public broker sometimes has invalid certificates. This sample accepts all
// certificates. This should not be used in live environments.
o.WithCertificateValidationHandler(_ => true);
}).Build();
return mqttClientOptions;
}
}
}