private void LogMetric()

in src/Microsoft.Azure.WebJobs.Logging.ApplicationInsights/ApplicationInsightsLogger.cs [109:168]
48 lines of code
11 McCabe index (conditional complexity)

        private void LogMetric(IEnumerable<KeyValuePair<string, object>> values, LogLevel logLevel, EventId eventId)
        {
            MetricTelemetry telemetry = new MetricTelemetry();
            // Always apply scope first to allow state to override.
            ApplyScopeProperties(telemetry);

            // Do not apply state properties if optimization is enabled
            if (!_loggerOptions.EnableMetricsCustomDimensionOptimization)
            {
                // Add known properties like category, logLevel and event
                ApplyKnownProperties(telemetry.Properties, logLevel, eventId);
            }

            foreach (var entry in values)
            {
                if (entry.Value == null)
                {
                    continue;
                }

                // Name and Value are not lower-case so check for them explicitly first and move to the
                // next entry if found.
                switch (entry.Key)
                {
                    case LogConstants.NameKey when entry.Value is string name:
                        telemetry.Name = name;
                        continue;
                    case LogConstants.MetricValueKey when entry.Value is double sum:
                        telemetry.Sum = sum;
                        continue;
                    case LogConstants.OriginalFormatKey:
                        continue;
                    default:
                        break;
                }

                // Now check for case-insensitive matches
                switch (entry.Key.ToLowerInvariant())
                {
                    case MetricCountKey when entry.Value is int count:
                        telemetry.Count = count;
                        break;
                    case MetricMinKey:
                        telemetry.Min = Convert.ToDouble(entry.Value);
                        break;
                    case MetricMaxKey:
                        telemetry.Max = Convert.ToDouble(entry.Value);
                        break;
                    case MetricStandardDeviationKey:
                        telemetry.StandardDeviation = Convert.ToDouble(entry.Value);
                        break;
                    default:
                        // Otherwise, it's a custom property.
                        ApplyProperty(telemetry, entry, true);
                        break;
                }
            }

            _telemetryClient.TrackMetric(telemetry);
        }