Question

我正在试用1.0.10-rc2中的实验功能。

edgeAgent UploadModuleLogs上有直接方法。

我可以从Azure门户调用该方法，并且效果很好。我正在尝试从同一设备上的模块中调用该方法，如下所示：

static async Task Init()
{
...

  await ioTHubModuleClient.SetMethodHandlerAsync("UploadModuleLogs", UploadModuleLogs, ioTHubModuleClient);
}

private static async Task<MethodResponse> UploadModuleLogs(MethodRequest methodRequest, object userContext)
{
  ModuleClient ioTHubModuleClient = (ModuleClient)userContext;

  // Upload logs
  Console.WriteLine("Invoking method On edgeAgent");

  var payload = @"{
""schemaVersion"": ""1.0"",
""sasUrl"": ""https://..."",
""items"": [
    {
        ""id"": "".*"", 
        ""filter"": {
            ""tail"": 100
        }
    }
],
""encoding"": ""none"", 
""contentType"": ""text""
} ";

  MethodRequest request = new MethodRequest("UploadModuleLogs", Encoding.UTF8.GetBytes(payload));

  string myModuleId = Environment.GetEnvironmentVariable("IOTEDGE_MODULEID");
  string myDeviceId = Environment.GetEnvironmentVariable("IOTEDGE_DEVICEID");

  Console.WriteLine($"{myDeviceId} {myModuleId} - UploadModuleLogs method request at {DateTime.Now}");
  //Console.WriteLine($"{request.DataAsJson}");

  try
  {
    var response = await ioTHubModuleClient.InvokeMethodAsync(myDeviceId, "$edgeAgent", request).ConfigureAwait(false);
    Console.WriteLine($"Received response with status: {response.Status} with message: {response.ResultAsJson}");

    return response;
  }
  catch (Exception ex)
  {
    Console.WriteLine($"Error invoking method {ex}");
  }

  return null;

尝试运行此命令

错误调用方法Microsoft.Azure.Devices.Client.Exceptions.DeviceNotFoundException：设备{“ message”：“找不到客户端myDeviceName / $ edgeAgent”}未注册在Microsoft.Azure.Devices.Client.Transport.HttpClientHelper.ExecuteAsync（HttpMethod httpMethod，Uri requestUri，Func 3 modifyRequestMessageAsync, Func 2成功，Func 3 processResponseMessageAsync, IDictionary 2 errorMappingOverrides，CancellationToken cancelledToken）处在Microsoft.Azure.Devices.Client.Transport.HttpClientHelper.PostAsync [T1，T2]（Uri requestUri，T1实体，IDictionary 2 errorMappingOverrides, IDictionary 2 customHeaders，CancellationToken cancelleToken）在Microsoft.Azure.Devices.Client.ModuleClient.InvokeMethodAsync（Uri uri，MethodRequest methodRequest，CancellationToken cancelleToken）

Answer 1

这是预期的行为，其他模块无法调用边缘代理的直接方法。边缘代理在设计上不会连接到edgeHub，因为该代理的直接方法具有特权，并且需要服务凭据才能访问。

Answer 2

~~对于模块到模块的通信，您应该创建消息并从一条路由到另一条https://docs.microsoft.com/en-us/azure/iot-edge/module-composition#declare-routes。~~

~~不支持方法：-（~~

设置路由可让您在连接到相同edgeHub的另一个模块上调用方法：

FROM /messages/modules/{moduleName}/* INTO BrokeredEndpoint("/modules/SimulatedTemperatureSensor/inputs/control")

如何从另一个模块在物联网边缘代理上调用直接方法？

2 个答案: