public override void Initialize()
{
ProcessingInterval = 0;
OnStatusMessage(MessageLevel.Info, $"Initialising OPC for device {Name}");
base.Initialize();
// If more data is added to the connection string the it will have to be parsed here (Look at ModbusPoller.cs for example line 456: https://github.com/GridProtectionAlliance/gsf/blob/master/Source/Libraries/Adapters/ModbusAdapters/ModbusPoller.cs)
// Statistics
StatisticsEngine.Register(this, "OPCUA", "OPC");
OutputMeasurements = ParseOutputMeasurements(DataSource, false, $"FILTER ActiveMeasurements WHERE Device = '{Name}'");
DataTable measurements = DataSource.Tables["ActiveMeasurements"];
items = OutputMeasurements.ToDictionary(measurement =>
{
DataRow[] records = measurements.Select($"ID = '{measurement.Key}'");
var reference = records[0]["SignalReference"].ToNonNullString();
OnStatusMessage(MessageLevel.Info, $"Linking OPC item {reference} with tag {measurement.TagName}");
return(reference);
});
// OPC Init
ApplicationInstance application = new ApplicationInstance
{
ApplicationName = "OPC UA Client",
ApplicationType = Opc.Ua.ApplicationType.Client,
ConfigSectionName = "Opc.Ua.Client"
};
ApplicationConfiguration config = application.LoadApplicationConfiguration(false).GetAwaiter().GetResult();
bool haveAppCertificate = application.CheckApplicationInstanceCertificate(false, 0).GetAwaiter().GetResult();
if (!haveAppCertificate)
{
throw new Exception("Application instance certificate invalid!");
}
if (haveAppCertificate)
{
config.ApplicationUri = Utils.GetApplicationUriFromCertificate(config.SecurityConfiguration.ApplicationCertificate.Certificate);
if (config.SecurityConfiguration.AutoAcceptUntrustedCertificates)
{
autoAccept = true;
}
config.CertificateValidator.CertificateValidation += new CertificateValidationEventHandler(CertificateValidator_CertificateValidation);
}
else
{
OnStatusMessage(MessageLevel.Info, $"Missing application certificate, using unsecure connection.");
}
m_configuration = config;
OnStatusMessage(MessageLevel.Info, $"OPC Initialised ({ConnectionString})");
}
