internal Metric GetOrCreateMetric(
string metricId,
string dimension1Name,
string dimension2Name,
IMetricConfiguration metricConfiguration)
{
metricId = metricId?.Trim();
Util.ValidateNotNullOrWhitespace(metricId, nameof(metricId));
string metricObjectId = Metric.GetObjectId(metricId, dimension1Name, dimension2Name);
Metric metric = _metrics.GetOrAdd(metricObjectId, (key) => new Metric(
_metricManager,
metricId,
dimension1Name,
dimension2Name,
metricConfiguration ?? MetricConfigurations.Common.Default()));
if (metricConfiguration != null && !metric._configuration.Equals(metricConfiguration))
{
throw new ArgumentException("A Metric with the specified Id and dimension names already exists, but it has a configuration"
+ " that is different from the specified configuration. You may not change configurations once a"
+ " metric was created for the first time. Either specify the same configuration every time, or"
+ " specify 'null' during every invocation except the first one. 'Null' will match against any"
+ " previously specified configuration when retrieving existing metrics, or fall back to"
+ $" the default when creating new metrics. (Metric Object Id: \"{metricObjectId}\".)");
}
return(metric);
}