/// <summary>
/// Adds a piece of metadata.
/// </summary>
/// <param name="host">Host.</param>
/// <param name="exc">Exchange.</param>
/// <param name="topic">Topic.</param>
/// <param name="recvAt">When the message was received.</param>
/// <param name="path">Filepath of the message.</param>
/// <param name="name">Message name.</param>
/// <param name="payload">Message payload summarised.</param>
/// <exception cref="ArgumentException">Thrown if DateTime kind is not UTC.</exception>
/// <exception cref="ObjectDisposedException">Thrown if disposed.</exception>
public void Add(Metadata metadata)
{
ExpectNotDisposed(); // throws ObjectDisposedException
// Require UTC time
ExpectUtc(metadata.ReceivedAt);
// Convert to the Entity Framework class
var efMetadata = new DbMetadataItem()
{
Host = metadata.Host,
Exchange = metadata.Exchange,
Topic = metadata.Topic,
ReceivedAt = metadata.ReceivedAt.Ticks,
Name = metadata.Name,
PayloadSummary = metadata.PayloadSummary,
PayloadType = metadata.PayloadType.ToString(),
Filepath = metadata.Filepath
};
// Add and save
m_messageContext.DbMetadataItem.Add(efMetadata);
m_messageContext.SaveChanges();
}
private Metadata ConvertForOutput(DbMetadataItem efMeta)
{
// Recognising payload type
var payloadType = PayloadTypeType.Other;
try
{
payloadType = (PayloadTypeType)Enum.Parse(typeof(PayloadTypeType), efMeta.PayloadType);
}
catch { } // Failed to parse - preserve default value
// Converting Entity Framework class to the neutral metadata class
return(new Metadata(
id: efMeta.DbMetadataItemId,
host: efMeta.Host,
exc: efMeta.Exchange,
topic: efMeta.Topic,
recvAt: DateTime.SpecifyKind(new DateTime(efMeta.ReceivedAt), DateTimeKind.Utc),
name: efMeta.Name,
payload: efMeta.PayloadSummary,
paylType: payloadType,
path: efMeta.Filepath
));
}