From b05aadccb4b8b1a9ff6a9657ab23203a3fb1e1c6 Mon Sep 17 00:00:00 2001
From: ngfrolov <ng.frolov@autodrilling.ru>
Date: Fri, 2 Dec 2022 17:44:47 +0500
Subject: [PATCH] Add memory monitor

---
 AsbCloudInfrastructure/Startup.cs | 34 +++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/AsbCloudInfrastructure/Startup.cs b/AsbCloudInfrastructure/Startup.cs
index 01768371..09e92644 100644
--- a/AsbCloudInfrastructure/Startup.cs
+++ b/AsbCloudInfrastructure/Startup.cs
@@ -9,6 +9,7 @@ using Microsoft.Extensions.Hosting;
 using System;
 using System.Threading.Tasks;
 using System.Threading;
+using AsbCloudInfrastructure.Background;
 
 namespace AsbCloudInfrastructure
 {
@@ -30,9 +31,42 @@ namespace AsbCloudInfrastructure
             backgroundWorker.Push(OperationDetectionWorkFactory.MakeWork());
             backgroundWorker.Push(SubsystemOperationTimeCalcWorkFactory.MakeWork());
             backgroundWorker.Push(LimitingParameterCalcWorkFactory.MakeWork());
+            backgroundWorker.Push(MakeMemoryMonitoringWork());
 
             Task.Delay(1_000)
                 .ContinueWith(async (_) => await backgroundWorker.StartAsync(CancellationToken.None));
         }
+
+        static WorkPeriodic MakeMemoryMonitoringWork()
+        {
+            var workId = "Memory monitoring";
+            var workAction = (string _, IServiceProvider _, CancellationToken _) => {
+                var bytes = GC.GetTotalMemory(false);
+                var bytesString = FromatBytes(bytes);
+                System.Diagnostics.Trace.TraceInformation($"Total memory allocated is {bytesString} bytes");
+                return Task.CompletedTask;
+            };
+            var workPeriod = TimeSpan.FromMinutes(1);
+            var work = new WorkPeriodic(workId, workAction, workPeriod);
+            return work;
+        }
+
+        static string FromatBytes(long bytes)
+        {
+            const double gigaByte = 1024 * 1024 * 1024;
+            const double megaByte = 1024 * 1024;
+            const double kiloByte = 1024;
+            
+            if (bytes > 10 * gigaByte)
+                return (bytes / gigaByte).ToString("### ### ###.## Gb");
+
+            if (bytes > 10 * megaByte)
+                return (bytes / megaByte).ToString("### ### ###.## Mb");
+
+            if (bytes > 10 * kiloByte)
+                return (bytes / megaByte).ToString("### ### ###.## Kb");
+
+            return bytes.ToString("### ### ###");
+        }
     }
 }