/// <summary>
/// Validates if the publisher is there and supports the method calls we need.
/// </summary>
/// <returns></returns>
private static async Task <bool> ValidatePublisherVersionAsync(CancellationToken ct)
{
// fetch the information
GetInfoMethodResponseModel info = await _publisher.GetInfoAsync(ct).ConfigureAwait(false);
if (info == null)
{
return(false);
}
Logger.Information($"OPC Publisher V{info.VersionMajor}.{info.VersionMinor}.{info.VersionPatch} was detected.");
Logger.Debug($"semantic version: {info.SemanticVersion}");
Logger.Debug($"informational version: {info.InformationalVersion}");
return(true);
}
/// <summary>
/// Call the GetInfo method.
/// </summary>
public async Task <GetInfoMethodResponseModel> GetInfoAsync(CancellationToken ct)
{
GetInfoMethodResponseModel response = null;
try
{
CloudToDeviceMethodResult methodResult = new CloudToDeviceMethodResult();
if (string.IsNullOrEmpty(_publisherModuleName))
{
methodResult = await _iotHubClient.InvokeDeviceMethodAsync(_publisherDeviceName, _getInfoMethod, ct).ConfigureAwait(false);
}
else
{
methodResult = await _iotHubClient.InvokeDeviceMethodAsync(_publisherDeviceName, _publisherModuleName, _getInfoMethod, ct).ConfigureAwait(false);
}
if (!ct.IsCancellationRequested)
{
if (methodResult.Status == (int)HttpStatusCode.OK)
{
response = JsonConvert.DeserializeObject <GetInfoMethodResponseModel>(methodResult.GetPayloadAsJson());
}
else
{
LogMethodResult(methodResult, _getConfiguredNodesOnEndpointMethod.MethodName);
}
}
}
catch (Exception e)
{
if (!ct.IsCancellationRequested)
{
Logger.Debug(e, $"Exception");
}
}
if (response == null && !ct.IsCancellationRequested)
{
Logger.Information("");
Logger.Information($"OPC Publisher is not responding. Either the used version is too old or it is not running.");
Logger.Information("");
}
return(response);
}
