Терзиогло, Кононов, Хлопина

Metrics.cs

@@ -0,0 +1,22 @@
+using System.Diagnostics.Metrics;
+
+namespace telemetry;
+
+public class Metrics
+{
+    private readonly Counter<int> indexRequestsCount;
+    private readonly Histogram<double> indexRequestsTime;
+
+    public Metrics(IMeterFactory meterFactory)
+    {
+        var meter = meterFactory.Create(nameof(Metrics));
+        indexRequestsCount = meter.CreateCounter<int>("requests.index.count", "pcs", "Количество запросов");
+        indexRequestsTime = meter.CreateHistogram<double>("requests.index.time", "ms", "Время запроса к index");
+    }
+
+    public void RequestToIndex(TimeSpan elapsed)
+    {
+        indexRequestsCount.Add(1);
+        indexRequestsTime.Record(elapsed.TotalMilliseconds);
+    }
+}

Pages/Index.cshtml.cs

@@ -1,3 +1,4 @@
+using System.Diagnostics;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
 
@@ -6,14 +7,22 @@ namespace telemetry.Pages;
 public class IndexModel : PageModel
 {
     private readonly ILogger<IndexModel> _logger;
+    private readonly Metrics _metrics;
 
-    public IndexModel(ILogger<IndexModel> logger)
+    public IndexModel(ILogger<IndexModel> logger, Metrics metrics)
     {
         _logger = logger;
+        _metrics = metrics;
     }
 
     public void OnGet()
     {
-
+        var sw = Stopwatch.StartNew();
+        for (var i = 0; i < new Random().Next(0, 100); i++)
+        {
+            Console.Write("1");
+        }
+        sw.Stop();
+        _metrics.RequestToIndex(sw.Elapsed);
     }
 }

Program.cs

@@ -1,5 +1,31 @@
+using OpenTelemetry.Logs;
+using OpenTelemetry.Metrics;
+using OpenTelemetry.Resources;
+using OpenTelemetry.Trace;
+using telemetry;
+
 var builder = WebApplication.CreateBuilder(args);
 
+builder.Services.AddSingleton<Metrics>();
+builder.Logging.AddOpenTelemetry(options =>
+{
+    options
+        .SetResourceBuilder(
+            ResourceBuilder.CreateDefault()
+                .AddService("TelemetryExample"))
+        .AddConsoleExporter();
+});
+builder.Services.AddOpenTelemetry()
+    .ConfigureResource(resource => resource.AddService("TelemetryExample"))
+    .WithTracing(tracing => tracing
+        .AddAspNetCoreInstrumentation()
+        .AddConsoleExporter())
+    .WithMetrics(metrics => metrics
+        .AddPrometheusExporter()
+        .AddAspNetCoreInstrumentation()
+        .AddConsoleExporter()
+        .AddMeter(nameof(Metrics)));
+
 // Add services to the container.
 builder.Services.AddRazorPages();
 
@@ -13,6 +39,8 @@
     app.UseHsts();
 }
 
+app.UseOpenTelemetryPrometheusScrapingEndpoint();
+
 app.UseHttpsRedirection();
 app.UseStaticFiles();
 

compose.yaml

@@ -0,0 +1,12 @@
+services:
+  prometheus:
+    image: "prom/prometheus"
+    ports:
+      - "9090:9090"
+    volumes:
+      - "./prometheus.yml:/etc/prometheus/prometheus.yml"
+
+  grafana:
+    image: "grafana/grafana-oss"
+    ports:
+      - "3000:3000"

prometheus.yml

@@ -0,0 +1,5 @@
+scrape_configs:
+  - job_name: "prometheus"
+    scrape_interval: 5s
+    static_configs:
+      - targets: ["host.docker.internal:5149"]

telemetry.csproj

@@ -6,4 +6,14 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="OpenTelemetry" Version="1.10.0" />
+    <PackageReference Include="OpenTelemetry.Exporter.Console" Version="1.10.0" />
+    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.10.0" />
+    <PackageReference Include="OpenTelemetry.Exporter.Prometheus.AspNetCore" Version="1.10.0-beta.1" />
+    <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.10.0" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.9.0" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.9.0" />
+  </ItemGroup>
+
 </Project>