private NotificationMetadata(string ioTHubName, string deviceId, NotificationMessageSchemas messageSchema, string rawMessageSchema, string correlationId)
{
Guard.NotNullOrWhitespace(ioTHubName, nameof(ioTHubName));
Guard.NotNullOrWhitespace(deviceId, nameof(deviceId));
IoTHubName = ioTHubName;
DeviceId = deviceId;
MessageSchema = messageSchema;
RawMessageSchema = rawMessageSchema;
CorrelationId = correlationId;
}
public async Task ProcessAsync(NotificationMessageSchemas messageSchema, NotificationMetadata notificationMetadata, string rawMessage)
{
IEventProcessor processor;
switch (messageSchema)
{
case NotificationMessageSchemas.TwinChangeNotification:
processor = _serviceProvider.GetRequiredService <TwinChangedNotificationProcessor>();
break;
default:
_logger.LogWarning("Message schema {MessageSchema} is not supported and being ignored", notificationMetadata.RawMessageSchema);
return;
}
await processor.ProcessAsync(notificationMetadata, rawMessage);
}
public static NotificationMetadata Parse(EventData eventData)
{
Guard.NotNull(eventData, nameof(eventData));
var deviceId = eventData.Properties[EventProperties.DeviceId]?.ToString();
var ioTHubName = eventData.Properties[EventProperties.IoTHubName]?.ToString();
var rawMessageSchema = eventData.Properties[EventProperties.MessageSchema]?.ToString();
var correlationId = eventData.SystemProperties[EventSystemProperties.CorrelationId].ToString();
NotificationMessageSchemas messageSchema = NotificationMessageSchemas.Unknown;
if (Enum.TryParse(rawMessageSchema, ignoreCase: true, out NotificationMessageSchemas parsedSchema))
{
messageSchema = parsedSchema;
}
return(new NotificationMetadata(ioTHubName, deviceId, messageSchema, rawMessageSchema, correlationId));
}
