feature: Observability: Prometheus Metrics and Grafana

VigilCareClinicalAPI/Program.cs

@@ -1,5 +1,6 @@
 using Elastic.Clients.Elasticsearch;
 using Microsoft.EntityFrameworkCore;
+using Prometheus;
 using Serilog;
 using StackExchange.Redis;
 using System.Text.Json.Serialization;
@@ -19,7 +20,9 @@ try
         builder.Host.UseSerilog((ctx, services, config) =>
             config.ReadFrom.Configuration(ctx.Configuration)
                   .ReadFrom.Services(services)
-                  .Enrich.FromLogContext());
+                  .Enrich.FromLogContext()
+                  .Enrich.WithMachineName()
+                  .Enrich.WithThreadId());
     }
 
     builder.Services.AddDbContext<AppDbContext>(opts =>
@@ -77,6 +80,10 @@ try
     builder.Services.AddHostedService<EscalationWorkerService>();
     builder.Services.AddHostedService<DischargeSummaryWorkerService>();
     builder.Services.AddHostedService<ReconciliationScheduler>();
+    builder.Services.AddSingleton<ClinicalMetrics>();
+    builder.Services.AddHostedService<AlertsUnacknowledgedCollector>();
+    builder.Services.AddHostedService<OutboxPendingCollector>();
+    builder.Services.AddHostedService<KafkaConsumerLagCollector>();
 
     builder.Services.AddControllers()
         .AddJsonOptions(opts =>
@@ -118,6 +125,7 @@ try
         app.UseSwaggerUI();
     }
 
+    app.MapMetrics("/metrics"); 
     app.MapControllers();
     app.Run();