server/AyaNova/Controllers/ServerMetricsController.cs

@@ -178,6 +178,49 @@ namespace AyaNova.Api.Controllers
 
 
 
+        /// <summary>
+        /// Get database related metrics for time period specified
+        /// </summary>  
+        /// <param name="tsStart">Start timestamp UTC</param>
+        /// <param name="tsEnd">End timestamp UTC</param>
+        /// <param name="maxRecords">Optional maximum records to return (downsampled). There is a 400 record maximum fixed default</param>
+        /// <returns>Snapshot of metrics</returns>
+        [HttpGet("db")]
+        public async Task<IActionResult> GetDBMetrics([FromQuery, Required] DateTime? tsStart, [FromQuery, Required] DateTime? tsEnd, [FromQuery] int? maxRecords)
+        {
+            //Note: the date and times are nullable and required so that the regular modelstate code kicks in to ensure they are present 
+            if (serverState.IsClosed)
+                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
+            if (!Authorized.HasReadFullRole(HttpContext.Items, AyaType.Metrics))
+                return StatusCode(403, new ApiNotAuthorizedResponse());
+            if (!ModelState.IsValid)
+                return BadRequest(new ApiErrorResponse(ModelState));
+
+            maxRecords ??= DEFAULT_MAX_RECORDS;
+
+            List<MetricDD> DBMetrics = new List<MetricDD>();
+            //touniversal is because the parameters are converted to local time here
+            //but then sent to the query as local time as well and not universal time which is what it should be
+            DBMetrics = await ct.MetricDD.AsNoTracking().Where(z => z.t >= ((DateTime)tsStart).ToUniversalTime() && z.t <= ((DateTime)tsEnd).ToUniversalTime()).OrderBy(z => z.t).ToListAsync();
+            var dsDBTotalSize = DBMetrics.Select(z => new Tuple<double, double>(z.t.ToOADate(), z.DBTotalSize)).ToList();
+            dsDBTotalSize = Util.DataUtil.LargestTriangleThreeBuckets(dsDBTotalSize, (int)maxRecords) as List<Tuple<double, double>>;
+
+            //table distribution, top 10
+            
+
+            var ret = new
+            {
+                
+                totalSize = dsDBTotalSize.Select(z => new MetricLong(DateTime.FromOADate(z.Item1), z.Item2 / MB)).ToArray()
+
+            };
+
+
+
+            await EventLogProcessor.LogEventToDatabaseAsync(new Event(UserIdFromContext.Id(HttpContext.Items), 0, AyaType.Metrics, AyaEvent.Retrieved), ct);
+            return Ok(ApiOkResponse.Response(ret));
+        }
+
 
 
         //------------