From 16efbfa8d4ead6d5a0d0da9137080ed6444252e5 Mon Sep 17 00:00:00 2001
From: ERDAS <com123465@mail.ru>
Date: Tue, 28 Oct 2025 15:33:41 +0500
Subject: [PATCH 1/3] init

---
 Program.cs       | 25 ++++++++++++++++++++++++-
 telemetry.csproj | 10 ++++++++++
 2 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/Program.cs b/Program.cs
index bc275e4..6d14d67 100644
--- a/Program.cs
+++ b/Program.cs
@@ -1,8 +1,31 @@
+using OpenTelemetry.Logs;
+using OpenTelemetry.Metrics;
+using OpenTelemetry.Resources;
+using OpenTelemetry.Trace;
+
 var builder = WebApplication.CreateBuilder(args);
 
 // Add services to the container.
 builder.Services.AddRazorPages();
 
+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());
+
 var app = builder.Build();
 
 // Configure the HTTP request pipeline.
@@ -15,7 +38,7 @@
 
 app.UseHttpsRedirection();
 app.UseStaticFiles();
-
+app.UseOpenTelemetryPrometheusScrapingEndpoint();
 app.UseRouting();
 
 app.UseAuthorization();
diff --git a/telemetry.csproj b/telemetry.csproj
index 1b28a01..21d6853 100644
--- a/telemetry.csproj
+++ b/telemetry.csproj
@@ -6,4 +6,14 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="OpenTelemetry" Version="1.13.1" />
+    <PackageReference Include="OpenTelemetry.Exporter.Console" Version="1.13.1" />
+    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.13.1" />
+    <PackageReference Include="OpenTelemetry.Exporter.Prometheus.AspNetCore" Version="1.13.1-beta.1" />
+    <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.13.1" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.13.0" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.13.0" />
+  </ItemGroup>
+
 </Project>

From e44fe7656b000a690a3dcee702037093e525554f Mon Sep 17 00:00:00 2001
From: "g.host" <g@host>
Date: Tue, 28 Oct 2025 15:40:15 +0500
Subject: [PATCH 2/3] 1.7

---
 Metrics.cs            | 22 ++++++++++++++++++++++
 Pages/Index.cshtml.cs | 16 ++++++++++++----
 Program.cs            |  7 +++++--
 3 files changed, 39 insertions(+), 6 deletions(-)
 create mode 100644 Metrics.cs

diff --git a/Metrics.cs b/Metrics.cs
new file mode 100644
index 0000000..30e2524
--- /dev/null
+++ b/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);
+    }
+}
\ No newline at end of file
diff --git a/Pages/Index.cshtml.cs b/Pages/Index.cshtml.cs
index 34a599f..48c4810 100644
--- a/Pages/Index.cshtml.cs
+++ b/Pages/Index.cshtml.cs
@@ -1,4 +1,4 @@
-using Microsoft.AspNetCore.Mvc;
+using System.Diagnostics;
 using Microsoft.AspNetCore.Mvc.RazorPages;
 
 namespace telemetry.Pages;
@@ -6,14 +6,22 @@ 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);
     }
-}
+}
\ No newline at end of file
diff --git a/Program.cs b/Program.cs
index 6d14d67..f6732ad 100644
--- a/Program.cs
+++ b/Program.cs
@@ -2,6 +2,7 @@
 using OpenTelemetry.Metrics;
 using OpenTelemetry.Resources;
 using OpenTelemetry.Trace;
+using telemetry;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -24,7 +25,9 @@
     .WithMetrics(metrics => metrics
         .AddPrometheusExporter()
         .AddAspNetCoreInstrumentation()
-        .AddConsoleExporter());
+        .AddConsoleExporter()
+        .AddMeter(nameof(Metrics))
+    );
 
 var app = builder.Build();
 
@@ -45,4 +48,4 @@
 
 app.MapRazorPages();
 
-app.Run();
+app.Run();
\ No newline at end of file

From 586fbefc07223b97d3b6e8414b7c863b0bc3bb6a Mon Sep 17 00:00:00 2001
From: ERDAS <com123465@mail.ru>
Date: Tue, 28 Oct 2025 15:49:29 +0500
Subject: [PATCH 3/3] fix

---
 Program.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Program.cs b/Program.cs
index f6732ad..7e4cfeb 100644
--- a/Program.cs
+++ b/Program.cs
@@ -8,6 +8,7 @@
 
 // Add services to the container.
 builder.Services.AddRazorPages();
+builder.Services.AddSingleton<Metrics>();
 
 builder.Logging.AddOpenTelemetry(options =>
 {