如何从另一个模块调用物联网边缘代理的直接方法？

Question

我正在尝试 1.0.10-rc2 中的实验性功能。

edgeAgent UploadModuleLogs 上有一个直接的方法。

我可以从 Azure 门户调用该方法，它工作正常。我正在尝试从我的模块在同一设备上调用该方法，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;

正在尝试运行这个：

调用方法时出错 Microsoft.Azure.Devices.Client.Exceptions.DeviceNotFoundException：设备 {"message":"Client myDeviceName/$edgeAgent not found"} 未注册在 Microsoft.Azure.Devices.Client.Transport.HttpClientHelper.ExecuteAsync（HttpMethod httpMethod，Uri requestUri，Func3 modifyRequestMessageAsync, Func2 isSuccessful，Func3 processResponseMessageAsync, IDictionary2 errorMappingOverrides，CancellationToken cancellationToken）在 Microsoft.Azure.Devices.Client.Transport.HttpClientHelper.PostAsync[T1,T2](Uri requestUri, T1 实体, IDictionary2 errorMappingOverrides, IDictionary2 customHeaders, CancellationToken cancellationToken) 在 Microsoft.Azure.Devices.Client.ModuleClient.InvokeMethodAsync(Uri uri, MethodRequest methodRequest, CancellationToken cancellationToken)

Answer 1

~~对于模块到模块的通信，您应该创建消息并从一个模块路由到另一个模块https://docs.microsoft.com/en-us/azure/iot-edge/module-composition#declare-routes。~~

~~不支持方法:-(~~

设置路由允许您在连接到同一个 edgeHub 的另一个模块上调用方法：

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

Answer 2

这是预期的行为，其他模块无法调用边缘代理的直接方法。由于代理的直接方法具有特权并且需要服务凭据才能访问，因此边缘代理不会按设计连接到 edgeHub。

如何从另一个模块调用物联网边缘代理的直接方法？

How to call direct method on iot edge agent from another module?

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