From 3ae4adb041b4b0ebe114be9ce60e76701e4335a5 Mon Sep 17 00:00:00 2001
From: sixwaaaay <lw.2675@qq.com>
Date: Sat, 13 Jan 2024 16:05:52 +0800
Subject: [PATCH] feat: add open telemetry tracing, prometheus metric

---
 .github/chore/compose.content.yaml |  5 ++++
 sharp/content/Program.cs           | 37 +++++++++++++++++++++++++++++-
 sharp/content/content.csproj       |  4 ++++
 3 files changed, 45 insertions(+), 1 deletion(-)

diff --git a/.github/chore/compose.content.yaml b/.github/chore/compose.content.yaml
index b10f0d13..0ab3622c 100644
--- a/.github/chore/compose.content.yaml
+++ b/.github/chore/compose.content.yaml
@@ -68,6 +68,11 @@ services:
       test: [ "CMD", "mysqladmin", "ping", "-h", "localhost" ]
       timeout: 20s
       retries: 10
+  jaeger:
+    image: jaegertracing/all-in-one:1.52
+    ports:
+      - 4317:4317
+      - 16686:16686
 
 volumes:
   mysql-data:
diff --git a/sharp/content/Program.cs b/sharp/content/Program.cs
index 5a27c016..13cd2ae9 100644
--- a/sharp/content/Program.cs
+++ b/sharp/content/Program.cs
@@ -9,8 +9,9 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- * 
+ *
  */
+
 using System.Text;
 using System.Text.Json;
 using System.Text.Json.Serialization;
@@ -20,6 +21,10 @@
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.IdentityModel.Tokens;
 using MySqlConnector;
+using OpenTelemetry.Exporter;
+using OpenTelemetry.Metrics;
+using OpenTelemetry.Resources;
+using OpenTelemetry.Trace;
 
 var builder = WebApplication.CreateSlimBuilder(args);
 
@@ -41,6 +46,35 @@
     }
 );
 
+const string serviceName = "sharing.content";
+var otelEndpoint = builder.Configuration.GetConnectionString("Otel_GrpcEndpoint");
+builder.Services.AddOpenTelemetry().WithTracing(tcb =>
+{
+    tcb
+        .AddSource(serviceName)
+        .SetResourceBuilder(ResourceBuilder.CreateDefault().AddService(serviceName: serviceName))
+        .AddAspNetCoreInstrumentation()
+        .AddOtlpExporter(o =>
+        {
+            if (!string.IsNullOrEmpty(otelEndpoint))
+            {
+                o.Endpoint = new Uri(otelEndpoint);
+            }
+        });
+}).WithMetrics(mtb =>
+{
+    mtb
+        .AddMeter("Microsoft.AspNetCore.Hosting", "Microsoft.AspNetCore.Server.Kestrel")
+        .AddView("http.server.request.duration",
+            new ExplicitBucketHistogramConfiguration
+            {
+                Boundaries = [0, 0.005, 0.01, 0.025, 0.05, 0.075, 0.1, 0.25, 0.5, 0.75, 1, 2.5, 5, 7.5, 10]
+            })
+        .AddPrometheusExporter();
+});
+
+builder.Services.AddSingleton(TracerProvider.Default.GetTracer(serviceName));
+
 builder.Services.AddAuthorization().AddProbe();
 builder.Services.AddProblemDetails().AddResponseCompression();
 
@@ -63,6 +97,7 @@
 
 app.UseToken();
 
+app.MapPrometheusScrapingEndpoint();
 app.MapEndpoints();
 
 app.Run();
diff --git a/sharp/content/content.csproj b/sharp/content/content.csproj
index 1f237608..ccd5d60e 100644
--- a/sharp/content/content.csproj
+++ b/sharp/content/content.csproj
@@ -35,6 +35,10 @@
     <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="8.0.0" />
     <PackageReference Include="MySqlConnector" Version="2.3.3" />
     <PackageReference Include="MySqlConnector.DependencyInjection" Version="2.3.1" />
+    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.7.0" />
+    <PackageReference Include="OpenTelemetry.Exporter.Prometheus.AspNetCore" Version="1.7.0-rc.1" />
+    <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.7.0" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.7.0" />
     <PackageReference Include="Riok.Mapperly" Version="3.3.0" />
   </ItemGroup>