feature: Schema, Migrations, Core CRUD, and Redis Threshold Cache

VigilCareClinicalAPI/Program.cs

@@ -0,0 +1,78 @@
+using Microsoft.EntityFrameworkCore;
+using Serilog;
+using StackExchange.Redis;
+
+Log.Logger = new LoggerConfiguration()
+    .WriteTo.Console()
+    .CreateBootstrapLogger();
+
+try
+{    
+    var builder = WebApplication.CreateBuilder(args);
+
+    builder.Host.UseSerilog((ctx, services, config) =>
+        config.ReadFrom.Configuration(ctx.Configuration)
+              .ReadFrom.Services(services)
+              .Enrich.FromLogContext());
+
+    builder.Services.AddDbContext<AppDbContext>(opts =>
+        opts.UseNpgsql(builder.Configuration.GetConnectionString("DefaultConnection")));
+
+    builder.Services.AddSingleton<IConnectionMultiplexer>(
+        ConnectionMultiplexer.Connect(builder.Configuration["Redis:ConnectionString"]!));
+
+    builder.Services.AddScoped<IPatientService, PatientService>();
+    builder.Services.AddScoped<IEncounterService, EncounterService>();
+    builder.Services.AddScoped<IAlertThresholdService, AlertThresholdService>();
+
+    builder.Services.AddHostedService<ThresholdCacheLoader>();
+
+    builder.Services.AddControllers();
+    builder.Services.AddEndpointsApiExplorer();
+    builder.Services.AddSwaggerGen();
+
+    var app = builder.Build();
+
+    using (var scope = app.Services.CreateScope())
+    {
+        var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();
+        var redis = scope.ServiceProvider.GetRequiredService<IConnectionMultiplexer>();
+        await DataSeeder.SeedAsync(db, redis);
+    }
+
+    app.UseSerilogRequestLogging(options =>
+    {
+        options.MessageTemplate =
+            "HTTP {RequestMethod} {RequestPath} responded {StatusCode} in {Elapsed:0.000}ms";
+    });
+
+    app.UseMiddleware<CorrelationIdMiddleware>();
+    app.UseMiddleware<ExceptionHandlerMiddleware>();
+
+    // Configure the HTTP request pipeline.
+    if (app.Environment.IsDevelopment())
+    {
+        app.UseSwagger();
+        app.UseSwaggerUI();
+    }
+
+    app.MapControllers();
+    app.Run();
+
+}
+/***
+dotnet ef tools use HostFactoryResolver which throws HostAbortedException internally as a control-flow mechanism to stop the host after discovering the DbContext. 
+Your generic catch was swallowing it instead of letting it propagate, so EF saw the process exit abnormally.
+***/ 
+catch (HostAbortedException)
+{
+    throw;
+}
+catch (Exception ex)
+{
+    Log.Fatal(ex, "Application failed to start.");
+}
+finally
+{
+    Log.CloseAndFlush();
+}