/// <summary>
/// Get logs by a specific attribute.
/// </summary>
/// <param name="registry">Log registry</param>
/// <param name="attribute">The attribute to get entries by.</param>
/// <returns>Logs grouped by the specified attribute.</returns>
public static IObservable <IGroupedObservable <object, ILogEntry> > GetBy(this ILogRegistry registry, LogAttribute attribute)
{
getByCounter.Increment(attribute.ToString());
if (attribute == LogAttribute.Timestamp)
{
return(null);
}
// Special case to ensure that message and timestamp (which doesn't work here anyway) match the expected types
return(from log in registry.Logs
where log.HasAttribute(attribute) && (log.IsValid || !(attribute == LogAttribute.Message && !(log.GetAttribute <object>(attribute) is string)))
group log by log.GetAttribute <object>(attribute));
}
/// <summary>
/// Add an attribute value to the log entry.
/// </summary>
/// <param name="entry">The entry to add an attribute to.</param>
/// <param name="attribute">The attribute to add to.</param>
/// <param name="value">The attribute value to add.</param>
/// <returns><c>true</c> if the entry was added. <c>false</c> if otherwise.</returns>
public bool AddValueToLog(ILogEntry entry, LogAttribute attribute, object value)
{
if (value == null)
{
return(false);
}
addValueToLogCounter.Increment(attribute.ToString());
if (entry is IInternalLogEntry internalEntry && !entry.HasAttribute(attribute))
{
addValueToLogAddingCounter.Increment();
internalEntry.AddAttribute(attribute, value);
return(true);
}
return(false);
}