internal static ThreadStaticStorage GetStorage()
{
if (storage == null)
{
storage = new ThreadStaticStorage();
}
return(storage);
}
internal IAggregator[] FindMetricAggregators(ReadOnlySpan <KeyValuePair <string, object> > tags)
{
int len = tags.Length;
if (len == 0)
{
if (this.tag0Metrics == null)
{
this.tag0Metrics = this.MapToMetrics(AggregatorStore.EmptySeqKey, AggregatorStore.EmptySeqValue);
}
return(this.tag0Metrics);
}
var storage = ThreadStaticStorage.GetStorage();
storage.SplitToKeysAndValues(tags, out var tagKey, out var tagValue);
if (len > 1)
{
Array.Sort <string, object>(tagKey, tagValue);
}
IAggregator[] metrics;
lock (this.lockKeyValue2MetricAggs)
{
string[] seqKey = null;
// GetOrAdd by TagKey at 1st Level of 2-level dictionary structure.
// Get back a Dictionary of [ Values x Metrics[] ].
if (!this.keyValue2MetricAggs.TryGetValue(tagKey, out var value2metrics))
{
// Note: We are using storage from ThreadStatic, so need to make a deep copy for Dictionary storage.
seqKey = new string[len];
tagKey.CopyTo(seqKey, 0);
value2metrics = new Dictionary <object[], IAggregator[]>(new ObjectArrayEqualityComparer());
this.keyValue2MetricAggs.Add(seqKey, value2metrics);
}
// GetOrAdd by TagValue at 2st Level of 2-level dictionary structure.
// Get back Metrics[].
if (!value2metrics.TryGetValue(tagValue, out metrics))
{
// Note: We are using storage from ThreadStatic, so need to make a deep copy for Dictionary storage.
if (seqKey == null)
{
seqKey = new string[len];
tagKey.CopyTo(seqKey, 0);
}
var seqVal = new object[len];
tagValue.CopyTo(seqVal, 0);
metrics = this.MapToMetrics(seqKey, seqVal);
value2metrics.Add(seqVal, metrics);
}
}
return(metrics);
}