private static void DiscoveryServer_ServiceInstanceShutdown(object sender, ServiceInstanceEventArgs e)
{
try
{
if (assetAdministrationShellRegistry != null && e.TxtRecords?.Count > 0)
{
string aasIdKeyValue = e.TxtRecords.FirstOrDefault(t => t.StartsWith(ASSETADMINISTRATIONSHELL_ID + KEY_VALUE_SEPERATOR));
if (!string.IsNullOrEmpty(aasIdKeyValue))
{
string[] splittedItem = aasIdKeyValue.Split(new char[] { '=' }, StringSplitOptions.RemoveEmptyEntries);
if (splittedItem != null && splittedItem.Length == 2)
{
if (splittedItem[0] == ASSETADMINISTRATIONSHELL_ID)
{
var deletedResult = assetAdministrationShellRegistry.DeleteAssetAdministrationShell(splittedItem[1]);
if (deletedResult.Success)
{
deletedResult.LogResult(logger, LogLevel.Info, "Successfully deregistered AAS from registry");
}
else
{
deletedResult.LogResult(logger, LogLevel.Error, "Could not unregister AAS from registry");
}
}
}
}
}
}
catch (Exception exc)
{
logger.Error(exc, "Error service instance shutdown");
}
}
private ServiceInstanceEventArgs GetServiceInstanceEventArgs(MessageEventArgs e)
{
var servers = e.Message.AdditionalRecords.OfType <SRVRecord>();
var addresses = e.Message.AdditionalRecords.OfType <AddressRecord>();
var txtRecords = e.Message.AdditionalRecords.OfType <TXTRecord>()?.SelectMany(s => s.Strings);
if (servers?.Count() > 0 && addresses.Count() > 0)
{
foreach (var server in servers)
{
ServiceInstanceEventArgs args = new ServiceInstanceEventArgs();
if (txtRecords?.Count() > 0)
{
args.TxtRecords.AddRange(txtRecords);
}
logger.Info($"host '{server.Target}' for '{server.Name}' at port '{server.Port}'");
var serverAddresses = addresses.Where(w => w.Name == server.Target);
if (serverAddresses?.Count() > 0)
{
foreach (var serverAddress in serverAddresses)
{
logger.Info($"host '{serverAddress.Name}' at {serverAddress.Address}");
args.Servers.Add(new Server()
{
Name = server.Name.ToString(),
Target = server.Target.ToString(),
Port = server.Port,
Address = serverAddress.Address
});
}
return(args);
}
}
}
return(null);
}
private static async void DiscoveryServer_ServiceInstanceDiscovered(object sender, ServiceInstanceEventArgs e)
{
try
{
IAssetAdministrationShellDescriptor aasDescriptor = null;
foreach (var server in e.Servers)
{
bool pingable = await BaSyx.Utils.Network.NetworkUtils.PingHostAsync(server.Address.ToString());
if (pingable)
{
string uri = string.Empty;
if (server.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
uri = "http://" + server.Address.ToString() + ":" + server.Port + "/aas";
}
else if (server.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
{
uri = "http://[" + server.Address.ToString() + "]:" + server.Port + "/aas";
}
else
{
continue;
}
Uri aasEndpoint = new Uri(uri);
AssetAdministrationShellHttpClient client = new AssetAdministrationShellHttpClient(aasEndpoint);
IResult <IAssetAdministrationShellDescriptor> retrieveDescriptor = client.RetrieveAssetAdministrationShellDescriptor();
if (retrieveDescriptor.Success && retrieveDescriptor.Entity != null)
{
retrieveDescriptor.LogResult(logger, LogLevel.Info, "Successfully retrieved AAS descriptor");
if (aasDescriptor == null)
{
aasDescriptor = retrieveDescriptor.Entity;
aasDescriptor.SetEndpoints(new List <IEndpoint>()
{
new HttpEndpoint(uri)
});
foreach (var submodelDescriptor in retrieveDescriptor.Entity.SubmodelDescriptors)
{
List <IEndpoint> submodelEndpoints = new List <IEndpoint>();
foreach (var submodelEndpoint in submodelDescriptor.Endpoints)
{
if (submodelEndpoint.Address.Contains(server.Address.ToString()))
{
submodelEndpoints.Add(submodelEndpoint);
}
}
aasDescriptor.SubmodelDescriptors[submodelDescriptor.IdShort].SetEndpoints(submodelEndpoints);
}
}
else
{
aasDescriptor.AddEndpoints(new List <IEndpoint>()
{
new HttpEndpoint(uri)
});
foreach (var submodelDescriptor in retrieveDescriptor.Entity.SubmodelDescriptors)
{
List <IEndpoint> submodelEndpoints = new List <IEndpoint>();
foreach (var submodelEndpoint in submodelDescriptor.Endpoints)
{
if (submodelEndpoint.Address.Contains(server.Address.ToString()))
{
if (aasDescriptor.SubmodelDescriptors[submodelDescriptor.IdShort].Endpoints.FirstOrDefault(f => f.Address == submodelEndpoint.Address) == null)
{
submodelEndpoints.Add(submodelEndpoint);
}
}
}
aasDescriptor.SubmodelDescriptors[submodelDescriptor.IdShort].AddEndpoints(submodelEndpoints);
}
}
}
else
{
retrieveDescriptor.LogResult(logger, LogLevel.Info, "Could not retrieve AAS descriptor");
}
}
}
if (aasDescriptor != null)
{
var registeredResult = assetAdministrationShellRegistry.CreateAssetAdministrationShell(aasDescriptor);
if (registeredResult.Success)
{
registeredResult.LogResult(logger, LogLevel.Info, "Successfully registered AAS at registry");
}
else
{
registeredResult.LogResult(logger, LogLevel.Error, "Could not register AAS at registry");
}
}
}
catch (Exception exc)
{
logger.Error(exc, "Error accessing discovered service instance");
}
}
