public IPacket CreatePacket(PacketDefinition definition, IFieldReader reader)
{
IPacket packet;
if (definition.TypeName == m_SampledMetricDefinitionPacketType)
{
//sampled metrics can't be created directly - they're an abstract class.
throw new ArgumentOutOfRangeException(nameof(definition), definition.TypeName, "Sampled Metric objects can't be created, only derived classes can.");
}
//what we create varies by what specific definition they're looking for
if (definition.TypeName == m_MetricDefinitionPacketType)
{
packet = new MetricDefinitionPacket(m_Session);
}
else if (definition.TypeName == m_EventMetricDefinitionPacketType)
{
packet = new EventMetricDefinitionPacket(m_Session);
}
else if (definition.TypeName == m_EventMetricValueDefinitionPacketType)
{
packet = new EventMetricValueDefinitionPacket(m_Session);
}
else if (definition.TypeName == m_CustomSampledMetricDefinitionPacketType)
{
packet = new CustomSampledMetricDefinitionPacket(m_Session);
}
else
{
//crap, we don't know what to do here.
throw new ArgumentOutOfRangeException(nameof(definition), definition.TypeName, "This packet factory doesn't undersatnd how to create packets for the provided type.");
}
//this feels a little crazy, but you have to do your own read call here - we aren't just creating the packet
//object, we actually have to make the standard call to have it read data...
definition.ReadFields(packet, reader);
return(packet);
}
/// <summary>
/// Determines if the provided object is identical to this object.
/// </summary>
/// <param name="other">The object to compare this object to</param>
/// <returns>True if the objects represent the same data.</returns>
public bool Equals(CustomSampledMetricDefinitionPacket other)
{
//We're really just a type cast, refer to our base object
return(base.Equals(other));
}
/// <summary>
/// Compares this object to the provided comparison object
/// </summary>
/// <param name="other"></param>
/// <returns>Zero if objects are the same object, -1 or 1 to indicate relative order (see CompareTo for more information)</returns>
public int CompareTo(CustomSampledMetricDefinitionPacket other)
{
//we just gateway to our base object.
return(base.CompareTo(other));
}
/// <summary>
/// Create a new custom sampled metric packet for the provided metric definition and a specific instance.
/// </summary>
/// <param name="metricDefinitionPacket">The metric definition packet that defines this metric</param>
/// <param name="instanceName">The unique instance name of this metric or null for the default instance.</param>
public CustomSampledMetricPacket(CustomSampledMetricDefinitionPacket metricDefinitionPacket, string instanceName)
: base(metricDefinitionPacket, instanceName)
{
}