server/AyaNova/Controllers/ServerMetricsController.cs

@@ -1,6 +1,7 @@
 using System;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
@@ -55,7 +56,7 @@ namespace AyaNova.Api.Controllers
         /// <param name="maxRecords">Optional maximum records to return. If there are more records for the time period selected than this value the result will be downsampled using Largest-Triangle-Three-Buckets algorithm</param>
         /// <returns>Snapshot of metrics</returns>
         [HttpGet]
-        public async Task<IActionResult> GetMetrics([FromQuery, Required] int hours, [FromQuery] int? maxRecords)
+        public async Task<IActionResult> GetMetrics([FromQuery] int? hours, [FromQuery] int? maxRecords)
         {
             if (serverState.IsClosed)
                 return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
@@ -64,11 +65,30 @@ namespace AyaNova.Api.Controllers
             {
                 return StatusCode(403, new ApiNotAuthorizedResponse());
             }
-
+            //use specified values or just return all           
+            maxRecords ??= int.MaxValue;
+            List<MetricMM> MinuteMetrics = new List<MetricMM>();
             //Query the data and downsample if required
-            var maxDate = DateTime.UtcNow.Subtract(new TimeSpan(hours, 0, 0, 0));
-            var MinuteMetrics = await ct.MetricMM.AsNoTracking().Where(z => z.t < maxDate).OrderBy(z => z.t).ToListAsync();
 
+            if (hours != null)
+            {
+                DateTime maxDate = DateTime.UtcNow.Subtract(new TimeSpan((int)hours, 0, 0, 0));
+                MinuteMetrics = await ct.MetricMM.AsNoTracking().Where(z => z.t > maxDate).OrderBy(z => z.t).ToListAsync();
+            }
+            else
+            {
+                MinuteMetrics = await ct.MetricMM.AsNoTracking().OrderBy(z => z.t).ToListAsync();
+            }
+
+
+        
+
+                if (maxRecords < MinuteMetrics.Count)
+                {
+                    //downsample it here
+                    ;//https://github.com/sveinn-steinarsson/flot-downsample/
+
+                }
 
             //Log
             await EventLogProcessor.LogEventToDatabaseAsync(new Event(UserIdFromContext.Id(HttpContext.Items), 0, AyaType.Metrics, AyaEvent.Retrieved), ct);