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| Original file line number | Diff line number | Diff line change |
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| // <copyright file="Program.cs" company="OpenTelemetry Authors"> | ||
| // Copyright The OpenTelemetry Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // 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. | ||
| // </copyright> | ||
|
|
||
| using System.Diagnostics; | ||
| using OpenTelemetry.Metrics; | ||
| using OpenTelemetry.Resources; | ||
|
|
||
| var appBuilder = WebApplication.CreateBuilder(args); | ||
|
|
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| // Configure OpenTelemetry with metrics and auto-start. | ||
| appBuilder.Services.AddOpenTelemetry() | ||
| .ConfigureResource(builder => builder | ||
| .AddService(serviceName: "OTel.NET Getting Started")) | ||
| .WithMetrics(builder => builder | ||
| .AddAspNetCoreInstrumentation() | ||
| .AddConsoleExporter((exporterOptions, metricReaderOptions) => | ||
| { | ||
| metricReaderOptions.PeriodicExportingMetricReaderOptions.ExportIntervalMilliseconds = 1000; | ||
| })); | ||
|
|
||
| var app = appBuilder.Build(); | ||
|
|
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| app.MapGet("/", () => $"Hello from OpenTelemetry Metrics!"); | ||
|
|
||
| app.Run(); |
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| # Getting Started with OpenTelemetry .NET in 5 Minutes - ASP.NET Core Application | ||
|
|
||
| First, download and install the [.NET | ||
| SDK](https://dotnet.microsoft.com/download) on your computer. | ||
|
|
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| Create a new web application: | ||
|
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||
| ```sh | ||
| dotnet new web -o aspnetcoreapp | ||
| cd aspnetcoreapp | ||
| ``` | ||
|
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| Install the | ||
| [OpenTelemetry.Exporter.Console](../../../src/OpenTelemetry.Exporter.Console/README.md), | ||
| [OpenTelemetry.Extensions.Hosting](../../../src/OpenTelemetry.Extensions.Hosting/README.md), | ||
| and | ||
| [OpenTelemetry.Instrumentation.AspNetCore](../../../src/OpenTelemetry.Exporter.Console/README.md) | ||
| packages: | ||
|
|
||
| ```sh | ||
| dotnet add package OpenTelemetry.Exporter.Console | ||
| dotnet add package OpenTelemetry.Extensions.Hosting | ||
| dotnet add package OpenTelemetry.Instrumentation.AspNetCore --prerelease | ||
| ``` | ||
|
|
||
| > **Note** This quickstart guide uses prerelease packages. For a quickstart | ||
| > which only relies on stable packages see: [Getting Started - Console | ||
| > Application](../getting-started-console/README.md). For more information about | ||
| > when instrumentation will be marked as stable see: [Instrumentation-1.0.0 | ||
| > milestone](https://github.com/open-telemetry/opentelemetry-dotnet/milestone/23). | ||
| Update the `Program.cs` file with the code from [Program.cs](./Program.cs). | ||
|
|
||
| Run the application again (using `dotnet run`) and then browse to the url shown | ||
| in the console for your application (ex `http://localhost:5154`). You should see | ||
| the metrics output from the console. | ||
|
|
||
| ```text | ||
| Export http.server.duration, Measures the duration of inbound HTTP requests., Unit: ms, Meter: OpenTelemetry.Instrumentation.AspNetCore/1.0.0.0 | ||
| (2023-04-11T21:49:43.6915232Z, 2023-04-11T21:50:50.6564690Z] http.flavor: 1.1 http.method: GET http.route: / http.scheme: http http.status_code: 200 net.host.name: localhost net.host.port: 5000 Histogram | ||
| Value: Sum: 3.5967 Count: 11 Min: 0.073 Max: 2.5539 | ||
| (-Infinity,0]:0 | ||
| (0,5]:11 | ||
| (5,10]:0 | ||
| (10,25]:0 | ||
| (25,50]:0 | ||
| (50,75]:0 | ||
| (75,100]:0 | ||
| (100,250]:0 | ||
| (250,500]:0 | ||
| (500,750]:0 | ||
| (750,1000]:0 | ||
| (1000,2500]:0 | ||
| (2500,5000]:0 | ||
| (5000,7500]:0 | ||
| (7500,10000]:0 | ||
| (10000,+Infinity]:0 | ||
| ``` | ||
|
|
||
| Congratulations! You are now collecting metrics using OpenTelemetry. | ||
|
|
||
| What does the above program do? | ||
|
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||
| The program uses the | ||
| [OpenTelemetry.Instrumentation.AspNetCore](../../../src/OpenTelemetry.Instrumentation.AspNetCore/README.md) | ||
| package to automatically create metrics for incoming ASP.NET Core requests, uses | ||
| the | ||
| [OpenTelemetry.Exporter.Console](../../../src/OpenTelemetry.Exporter.Console/README.md) | ||
| package to write metrics to the console every 1000 milliseconds. This is done by | ||
| configuring an OpenTelemetry | ||
| [MeterProvider](../customizing-the-sdk/README.MD#meterprovider) using extension | ||
| methods and setting it to auto-start when the host is started: | ||
|
|
||
| ```csharp | ||
| appBuilder.Services.AddOpenTelemetry() | ||
| .ConfigureResource(builder => builder | ||
| .AddService(serviceName: "OTel.NET Getting Started")) | ||
| .WithMetrics(builder => builder | ||
| .AddAspNetCoreInstrumentation() | ||
| .AddConsoleExporter((exporterOptions, metricReaderOptions) => | ||
| { | ||
| metricReaderOptions.PeriodicExportingMetricReaderOptions.ExportIntervalMilliseconds = 1000; | ||
| }) | ||
| ); | ||
| ``` | ||
|
|
||
| > **Note** | ||
| > The `AddOpenTelemetry` extension is part of the | ||
| [OpenTelemetry.Extensions.Hosting](../../../src/OpenTelemetry.Extensions.Hosting/README.md) | ||
| package. | ||
|
|
||
| The index route ("/") is set up to write out a greeting message on the response: | ||
|
|
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| ```csharp | ||
| app.MapGet("/", () => $"Hello from OpenTelemetry Metrics!"); | ||
| ``` | ||
|
|
||
| ## Learn more | ||
|
|
||
| * [Getting Started with Prometheus and Grafana](../getting-started-prometheus-grafana/README.md) | ||
| * [Customizing OpenTelemetry .NET SDK](../customizing-the-sdk/README.md) | ||
| * [Extending the OpenTelemetry .NET SDK](../extending-the-sdk/README.md) |
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docs/metrics/getting-started-aspnetcore/appsettings.Development.json
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| { | ||
| "DetailedErrors": true, | ||
| "Logging": { | ||
| "LogLevel": { | ||
| "Default": "Information", | ||
| "Microsoft.AspNetCore": "Warning" | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| { | ||
| "Logging": { | ||
| "LogLevel": { | ||
| "Default": "Information", | ||
| "Microsoft.AspNetCore": "Warning" | ||
| } | ||
| }, | ||
| "AllowedHosts": "*" | ||
| } |
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docs/metrics/getting-started-aspnetcore/getting-started-aspnetcore.csproj
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| <Project Sdk="Microsoft.NET.Sdk.Web"> | ||
|
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| <PropertyGroup> | ||
| <TargetFrameworks>net6.0;net7.0</TargetFrameworks> | ||
| <Nullable>enable</Nullable> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| </PropertyGroup> | ||
|
|
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| <ItemGroup> | ||
| <ProjectReference Include="$(RepoRoot)\src\OpenTelemetry.Exporter.Console\OpenTelemetry.Exporter.Console.csproj" /> | ||
| <ProjectReference Include="$(RepoRoot)\src\OpenTelemetry.Extensions.Hosting\OpenTelemetry.Extensions.Hosting.csproj" /> | ||
| <ProjectReference Include="$(RepoRoot)\src\OpenTelemetry.Instrumentation.AspNetCore\OpenTelemetry.Instrumentation.AspNetCore.csproj" /> | ||
| </ItemGroup> | ||
|
|
||
| </Project> |
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