LoggedFeedResponseAsync.cs

public static async Task<FeedResponse<T>> LoggedFeedResponseAsync<T>(this IQueryable<T> queryable, string infoLog, string operationId)
{
	var docQuery = queryable.AsDocumentQuery();
	var now = DateTimeOffset.UtcNow;
	var watch = Stopwatch.StartNew();
	var feedResponse = await docQuery.ExecuteNextAsync<T>();
	watch.Stop();
	TrackQuery(now, watch.Elapsed, feedResponse.RequestCharge, "read", new TelemetryClient(), infoLog, operationId, feedResponse.ContentLocation);
	return feedResponse;
}

public static void TrackQuery(DateTimeOffset start, TimeSpan duration, double requestCharge, string kind, TelemetryClient tc, string infolog, string operationId, string contentLocation)
{
	var dependency = new DependencyTelemetry(
			"DOCDB",
			"",
			"DOCDB",
			"",
			start,
			duration,
			"0", // Result code : we can't capture 429 here anyway
			true // We assume this call is successful, otherwise an exception would be thrown before.
			);
	dependency.Metrics["request-charge"] = requestCharge;
	dependency.Properties["kind"] = kind;
	dependency.Properties["infolog"] = infolog;
	dependency.Properties["contentLocation"] = contentLocation ?? "";
	if (operationId != null)
	{
		dependency.Context.Operation.Id = operationId;
	}
	tc.TrackDependency(dependency);
}