rework metrics

MareSynchronosServer/MareSynchronosShared/Metrics/MareMetrics.cs

@@ -0,0 +1,57 @@
+using MareSynchronosShared.Data;
+using Microsoft.Extensions.DependencyInjection;
+using Prometheus;
+
+namespace MareSynchronosShared.Metrics;
+
+public class MareMetrics
+{
+    public MareMetrics(List<string> countersToServe, List<string> gaugesToServe)
+    {
+        foreach(var counter in countersToServe)
+        {
+            counters.Add(counter, Prometheus.Metrics.CreateCounter(counter, counter));
+        }
+
+        foreach(var gauge in gaugesToServe)
+        {
+            gauges.Add(gauge, Prometheus.Metrics.CreateGauge(gauge, gauge));
+        }
+    }
+
+    private readonly Dictionary<string, Counter> counters = new(StringComparer.Ordinal);
+
+    private readonly Dictionary<string, Gauge> gauges = new(StringComparer.Ordinal);
+
+    public void SetGaugeTo(string gaugeName, double value)
+    {
+        if (gauges.ContainsKey(gaugeName))
+        {
+            gauges[gaugeName].IncTo(value);
+        }
+    }
+
+    public void IncGauge(string gaugeName, double value = 1.0)
+    {
+        if (gauges.ContainsKey(gaugeName))
+        {
+            gauges[gaugeName].Inc(value);
+        }
+    }
+
+    public void DecGauge(string gaugeName, double value = 1.0)
+    {
+        if (gauges.ContainsKey(gaugeName))
+        {
+            gauges[gaugeName].Dec(value);
+        }
+    }
+
+    public void IncCounter(string counterName, double value = 1.0)
+    {
+        if (counters.ContainsKey(counterName))
+        {
+            counters[counterName].Inc(value);
+        }
+    }
+}