add metrics (without reporting, for now)

Catalogger.Backend/CataloggerMetrics.cs

@@ -0,0 +1,88 @@
+using App.Metrics;
+using App.Metrics.Gauge;
+using App.Metrics.Meter;
+using App.Metrics.Timer;
+
+namespace Catalogger.Backend;
+
+public static class CataloggerMetrics
+{
+    public static MeterOptions MessagesReceived => new()
+    {
+        Name = "Messages received",
+        MeasurementUnit = Unit.Events,
+        RateUnit = TimeUnit.Seconds,
+        Context = "Bot"
+    };
+
+    public static GaugeOptions GuildsCached => new()
+    {
+        Name = "Guilds cached",
+        MeasurementUnit = Unit.Items,
+        Context = "Bot"
+    };
+
+    public static GaugeOptions ChannelsCached => new()
+    {
+        Name = "Channels cached",
+        MeasurementUnit = Unit.Items,
+        Context = "Bot"
+    };
+    
+    public static GaugeOptions UsersCached => new()
+    {
+        Name = "Users cached",
+        MeasurementUnit = Unit.Items,
+        Context = "Bot"
+    };
+
+    public static GaugeOptions MessagesStored => new()
+    {
+        Name = "Messages stored",
+        MeasurementUnit = Unit.Items,
+        Context = "Bot"
+    };
+
+    public static TimerOptions MetricsCollectionTime => new()
+    {
+        Name = "Metrics collection time",
+        MeasurementUnit = Unit.Events,
+        DurationUnit = TimeUnit.Milliseconds,
+        Context = "Bot"
+    };
+    
+    public static GaugeOptions ProcessPhysicalMemory => new()
+    {
+        Name = "Process physical memory",
+        MeasurementUnit = Unit.Bytes,
+        Context = "Process"
+    };
+
+    public static GaugeOptions ProcessVirtualMemory => new()
+    {
+        Name = "Process virtual memory",
+        MeasurementUnit = Unit.Bytes,
+        Context = "Process"
+    };
+
+    public static GaugeOptions ProcessPrivateMemory => new()
+    {
+        Name = "Process private memory",
+        MeasurementUnit = Unit.Bytes,
+        Context = "Process"
+    };
+
+    public static GaugeOptions ProcessThreads => new()
+    {
+        Name = "Process thread count",
+        MeasurementUnit = Unit.Threads,
+        Context = "Process"
+    };
+
+    public static GaugeOptions ProcessHandles => new()
+    {
+        Name = "Process handle count",
+        MeasurementUnit = Unit.Items,
+        Context = "Process"
+    };
+}