/*
* Two methods below, Equals and GetHashCode, should be used instead of generated in ClusterMetrics.Messages.g.cs
* file. Since we do not have an option to not generate those methods for this particular class,
* just stip them from generated code and paste here, with adding Address property check
*/
/// <inheritdoc />
public bool Equals(NodeMetrics other)
{
if (ReferenceEquals(null, other))
{
return(false);
}
if (ReferenceEquals(this, other))
{
return(true);
}
return(Equals(Address, other.Address));
}
/// <summary>
/// Returns the most recent data.
/// </summary>
public NodeMetrics Merge(NodeMetrics that)
{
if (!Address.Equals(that.Address))
{
throw new ArgumentException(nameof(that), $"merge only allowed for same address, {Address} != {that.Address}");
}
if (Timestamp >= that.Timestamp)
{
return(this); // that is order
}
return(new NodeMetrics(Address, that.Timestamp, that.Metrics.Union(Metrics)));
}
/// <summary>
/// Returns the most recent data with <see cref="Types.EWMA"/> averaging.
/// </summary>
public NodeMetrics Update(NodeMetrics that)
{
if (!Address.Equals(that.Address))
{
throw new ArgumentException(nameof(that), $"merge only allowed for same address, {Address} != {that.Address}");
}
// Apply sample ordering
var(latestNode, currentNode) = Timestamp >= that.Timestamp ? (this, that) : (that, this);
// Average metrics present in both latest and current.
var updated = latestNode.Metrics
.SelectMany(latest => currentNode.Metrics.Select(current => (Latest: latest, Current: current)))
.Where(pair => pair.Latest.SameAs(pair.Current))
.Select(pair => pair.Current + pair.Latest)
.ToList();
// Append metrics missing from either latest or current.
// Equality is based on the metric's name
var merged = updated.Union(latestNode.Metrics).Union(currentNode.Metrics);
return(new NodeMetrics(Address, latestNode.Timestamp, merged));
}
/// <summary> /// Returns true if <code>that</code> address is the same as this /// </summary> public bool SameAs(NodeMetrics that) => Address.Equals(that.Address);
