/// <summary>
/// Perform event to message encoding
/// </summary>
/// <param name="message"></param>
/// <returns></returns>
public IEnumerable <NetworkMessageModel> EncodeAsUadp(DataSetMessageModel message)
{
foreach (var notification in message.Notifications)
{
using (var encoder = new BinaryEncoder(message.ServiceMessageContext)) {
var value = new MonitoredItemMessage {
MessageContentMask = (message.Writer?.MessageSettings?
.DataSetMessageContentMask).ToMonitoredItemMessageMask(
message.Writer?.DataSetFieldContentMask),
ApplicationUri = message.ApplicationUri,
SubscriptionId = message.SubscriptionId,
EndpointUrl = message.EndpointUrl,
ExtensionFields = message.Writer?.DataSet?.ExtensionFields,
NodeId = notification.NodeId.ToExpandedNodeId(message.ServiceMessageContext.NamespaceUris),
Timestamp = message.TimeStamp ?? DateTime.UtcNow,
Value = notification.Value,
DisplayName = notification.DisplayName
};
value.Encode(encoder);
var encoded = new NetworkMessageModel {
Body = encoder.CloseAndReturnBuffer(),
ContentEncoding = "utf-8",
Timestamp = DateTime.UtcNow,
ContentType = ContentMimeType.UaBinary,
MessageId = message.SequenceNumber.ToString(),
MessageSchema = MessageSchemaTypes.MonitoredItemMessageBinary
};
yield return(encoded);
}
}
}
/// <summary>
/// Perform event to message encoding
/// </summary>
/// <param name="message"></param>
/// <returns></returns>
public IEnumerable <NetworkMessageModel> Encode(DataSetMessageModel message)
{
foreach (var notification in message.Notifications)
{
var value = new MonitoredItemMessage {
MessageContentMask = (message.Writer?.MessageSettings?
.DataSetMessageContentMask).ToMonitoredItemMessageMask(
message.Writer?.DataSetFieldContentMask),
ApplicationUri = message.ApplicationUri,
EndpointUrl = message.EndpointUrl,
ExtensionFields = message.Writer?.DataSet?.ExtensionFields,
NodeId = notification.NodeId,
Value = notification.Value,
DisplayName = notification.DisplayName
};
using (var writer = new StringWriter()) {
using (var encoder = new JsonEncoderEx(writer, message.ServiceMessageContext)
{
// TODO: Configure encoding further
UseUriEncoding = true
}) {
value.Encode(encoder);
}
var encoded = new NetworkMessageModel {
Body = Encoding.UTF8.GetBytes(writer.ToString()),
ContentEncoding = "utf-8",
Timestamp = DateTime.UtcNow,
ContentType = ContentMimeType.Json,
MessageId = message.SequenceNumber.ToString(),
MessageSchema = MessageSchemaTypes.MonitoredItemMessageJson
};
yield return(encoded);
}
}
}
/// <summary>
/// Produce Monitored Item Messages from the data set message model for the specified encoding
/// </summary>
/// <param name="messages"></param>
/// <param name="encoding"></param>
private IEnumerable <MonitoredItemMessage> GetMonitoredItemMessages(
IEnumerable <DataSetMessageModel> messages, MessageEncoding encoding)
{
foreach (var message in messages)
{
if (message.WriterGroup?.MessageType.GetValueOrDefault(MessageEncoding.Json) == encoding)
{
foreach (var notification in message.Notifications)
{
var result = new MonitoredItemMessage {
MessageContentMask = (message.Writer?.MessageSettings?
.DataSetMessageContentMask).ToMonitoredItemMessageMask(
message.Writer?.DataSetFieldContentMask),
ApplicationUri = message.ApplicationUri,
EndpointUrl = message.EndpointUrl,
ExtensionFields = message.Writer?.DataSet?.ExtensionFields,
NodeId = notification.NodeId.ToExpandedNodeId(message.ServiceMessageContext.NamespaceUris),
Timestamp = message.TimeStamp ?? DateTime.UtcNow,
Value = notification.Value,
DisplayName = notification.DisplayName,
SequenceNumber = notification.SequenceNumber.GetValueOrDefault(0)
};
// force published timestamp into to source timestamp for the legacy heartbeat compatibility
if (notification.IsHeartbeat &&
((result.MessageContentMask & (uint)MonitoredItemMessageContentMask.Timestamp) == 0) &&
((result.MessageContentMask & (uint)MonitoredItemMessageContentMask.SourceTimestamp) != 0))
{
result.Value.SourceTimestamp = result.Timestamp;
}
yield return(result);
}
}
}
}
/// <summary>
/// Produce Monitored Item Messages from the data set message model for the specified encoding
/// </summary>
/// <param name="messages"></param>
/// <param name="encoding"></param>
/// <param name="context"></param>
private IEnumerable <MonitoredItemMessage> GetMonitoredItemMessages(
IEnumerable <DataSetMessageModel> messages, MessageEncoding encoding,
ServiceMessageContext context)
{
if (context?.NamespaceUris == null)
{
// Declare all notifications in messages as dropped.
int totalNotifications = messages.Sum(m => m?.Notifications?.Count() ?? 0);
NotificationsDroppedCount += (uint)totalNotifications;
_logger.Warning("Namespace is empty, dropped {totalNotifications} values");
yield break;
}
foreach (var message in messages)
{
if (message.WriterGroup?.MessageType.GetValueOrDefault(MessageEncoding.Json) == encoding)
{
foreach (var notification in message.Notifications)
{
var result = new MonitoredItemMessage {
MessageContentMask = (message.Writer?.MessageSettings?
.DataSetMessageContentMask).ToMonitoredItemMessageMask(
message.Writer?.DataSetFieldContentMask),
ApplicationUri = message.ApplicationUri,
EndpointUrl = message.EndpointUrl,
ExtensionFields = message.Writer?.DataSet?.ExtensionFields,
NodeId = notification.NodeId.ToExpandedNodeId(context.NamespaceUris),
Timestamp = message.TimeStamp ?? DateTime.UtcNow,
Value = notification.Value,
DisplayName = notification.DisplayName,
SequenceNumber = notification.SequenceNumber.GetValueOrDefault(0)
};
// force published timestamp into to source timestamp for the legacy heartbeat compatibility
if (notification.IsHeartbeat &&
((result.MessageContentMask & (uint)MonitoredItemMessageContentMask.Timestamp) == 0) &&
((result.MessageContentMask & (uint)MonitoredItemMessageContentMask.SourceTimestamp) != 0))
{
result.Value.SourceTimestamp = result.Timestamp;
}
yield return(result);
}
}
}
}
/// <summary>
/// Perform event to message encoding
/// </summary>
/// <param name="message"></param>
/// <returns></returns>
public IEnumerable <NetworkMessageModel> EncodeAsJson(DataSetMessageModel message)
{
foreach (var notification in message.Notifications)
{
using (var writer = new StringWriter()) {
var value = new MonitoredItemMessage {
MessageContentMask = (message.Writer?.MessageSettings?
.DataSetMessageContentMask).ToMonitoredItemMessageMask(
message.Writer?.DataSetFieldContentMask),
ApplicationUri = message.ApplicationUri,
EndpointUrl = message.EndpointUrl,
ExtensionFields = message.Writer?.DataSet?.ExtensionFields,
NodeId = notification.NodeId.ToExpandedNodeId(message.ServiceMessageContext.NamespaceUris),
Timestamp = message.TimeStamp ?? DateTime.UtcNow,
Value = notification.Value,
DisplayName = notification.DisplayName
};
using (var encoder = new JsonEncoderEx(writer, message.ServiceMessageContext)
{
UseAdvancedEncoding = true,
UseUriEncoding = true,
UseReversibleEncoding = false
}){
value.Encode(encoder);
}
var encoded = new NetworkMessageModel {
Body = Encoding.UTF8.GetBytes(writer.ToString()),
ContentEncoding = "utf-8",
Timestamp = DateTime.UtcNow,
ContentType = ContentMimeType.UaLegacyPublisher,
MessageId = message.SequenceNumber.ToString(),
MessageSchema = MessageSchemaTypes.MonitoredItemMessageJson
};
yield return(encoded);
}
}
}
