public Task Performance()
{
var from = 0;
var froms = HttpContext.Request.Query["from"];
if (froms.Count > 1)
{
throw new ArgumentException($"Query string value 'from' must appear exactly once");
}
if (froms.Count > 0 && int.TryParse(froms[0], out from) == false)
{
throw new ArgumentException($"Query string value 'from' must be a number");
}
var stats = GetIndexesToReportOn()
.Select(x => new IndexPerformanceStats
{
IndexName = x.Name,
IndexId = x.IndexId,
Performance = x.GetIndexingPerformance(from)
})
.ToArray();
JsonOperationContext context;
using (Database.DocumentsStorage.ContextPool.AllocateOperationContext(out context))
using (var writer = new BlittableJsonTextWriter(context, ResponseBodyStream()))
{
writer.WriteStartArray();
var isFirst = true;
foreach (var stat in stats)
{
if (isFirst == false)
{
writer.WriteComma();
}
isFirst = false;
writer.WriteStartObject();
writer.WritePropertyName(nameof(stat.IndexName));
writer.WriteString((stat.IndexName));
writer.WriteComma();
writer.WritePropertyName(nameof(stat.IndexId));
writer.WriteInteger(stat.IndexId);
writer.WriteComma();
writer.WritePropertyName(nameof(stat.Performance));
writer.WriteStartArray();
var isFirstInternal = true;
foreach (var performance in stat.Performance)
{
if (isFirstInternal == false)
{
writer.WriteComma();
}
isFirstInternal = false;
writer.WriteIndexingPerformanceStats(context, performance);
}
writer.WriteEndArray();
writer.WriteEndObject();
}
writer.WriteEndArray();
}
return(Task.CompletedTask);
}