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macel94fstab
macel94
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fstab
committedMay 22, 2024
started working on dotnet sample
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‎.dockerignore

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**/.classpath
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**/.dockerignore
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**/.env
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**/.git
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**/.gitignore
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**/.project
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**/.settings
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**/.toolstarget
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**/.vs
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**/.vscode
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**/*.*proj.user
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**/*.dbmdl
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**/*.jfm
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**/bin
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**/charts
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**/docker-compose*
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**/compose*
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**/Dockerfile*
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**/node_modules
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**/npm-debug.log
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**/obj
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**/secrets.dev.yaml
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**/values.dev.yaml
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LICENSE
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README.md

‎.vscode/launch.json

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{
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"configurations": [
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{
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"name": "Docker .NET Launch",
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"type": "docker",
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"request": "launch",
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"preLaunchTask": "docker-run: debug",
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"netCore": {
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"appProject": "${workspaceFolder}/examples/dotnet/rolldice.csproj"
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}
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}
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]
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}

‎.vscode/tasks.json

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{
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"version": "2.0.0",
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"tasks": [
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{
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"label": "echo",
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"type": "shell",
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"command": "echo Hello"
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},
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{
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"type": "docker-build",
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"label": "docker-build: debug",
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"dependsOn": [
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"build"
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],
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"dockerBuild": {
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"tag": "dockerotellgtm:dev",
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"target": "base",
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"dockerfile": "${workspaceFolder}/examples/dotnet/Dockerfile",
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"context": "${workspaceFolder}",
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"pull": true
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},
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"netCore": {
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"appProject": "${workspaceFolder}/examples/dotnet/rolldice.csproj"
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}
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},
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{
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"type": "docker-build",
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"label": "docker-build: release",
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"dependsOn": [
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"build"
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],
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"dockerBuild": {
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"tag": "dockerotellgtm:latest",
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"dockerfile": "${workspaceFolder}/examples/dotnet/Dockerfile",
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"context": "${workspaceFolder}",
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"platform": {
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"os": "linux",
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"architecture": "amd64"
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},
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"pull": true
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},
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"netCore": {
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"appProject": "${workspaceFolder}/examples/dotnet/rolldice.csproj"
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}
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},
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{
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"type": "docker-run",
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"label": "docker-run: debug",
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"dependsOn": [
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"docker-build: debug"
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],
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"dockerRun": {},
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"netCore": {
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"appProject": "${workspaceFolder}/examples/dotnet/rolldice.csproj",
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"enableDebugging": true
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}
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},
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{
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"type": "docker-run",
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"label": "docker-run: release",
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"dependsOn": [
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"docker-build: release"
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],
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"dockerRun": {},
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"netCore": {
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"appProject": "${workspaceFolder}/examples/dotnet/rolldice.csproj"
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}
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}
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]
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}

‎README.md

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| Java | `curl http://localhost:8080/rolldice` |
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| Go | `curl http://localhost:8081/rolldice` |
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| Python | `curl http://localhost:8082/rolldice` |
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| dotnet | `curl http://localhost:8083/rolldice` |
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## Related Work
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‎examples/dotnet/.gitignore

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‎examples/dotnet/Dockerfile

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FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
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WORKDIR /app
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EXPOSE 8083
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ENV ASPNETCORE_URLS=http://+:8083
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USER app
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FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:8.0 AS build
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ARG configuration=Release
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WORKDIR /src
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COPY ["rolldice.csproj", "/"]
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RUN dotnet restore "/rolldice.csproj"
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COPY . .
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WORKDIR "/src/"
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RUN dotnet build "rolldice.csproj" -c $configuration -o /app/build
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FROM build AS publish
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ARG configuration=Release
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RUN dotnet publish "rolldice.csproj" -c $configuration -o /app/publish /p:UseAppHost=false
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FROM base AS final
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WORKDIR /app
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COPY --from=publish /app/publish .
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ENTRYPOINT ["dotnet", "rolldice.dll"]

‎examples/dotnet/Program.cs

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using System.Globalization;
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using Microsoft.AspNetCore.Mvc;
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using OpenTelemetry.Logs;
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using OpenTelemetry.Metrics;
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using OpenTelemetry.Resources;
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using OpenTelemetry.Trace;
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var builder = WebApplication.CreateBuilder(args);
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const string serviceName = "roll-dice";
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builder.Logging.AddOpenTelemetry(options =>
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{
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options
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.SetResourceBuilder(
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ResourceBuilder.CreateDefault()
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.AddService(serviceName))
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.AddConsoleExporter();
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});
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builder.Services.AddOpenTelemetry()
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.ConfigureResource(resource => resource.AddService(serviceName))
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.WithTracing(tracing => tracing
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.AddAspNetCoreInstrumentation()
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.AddConsoleExporter())
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.WithMetrics(metrics => metrics
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.AddAspNetCoreInstrumentation()
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.AddConsoleExporter());
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var useOtlpExporter = !string.IsNullOrWhiteSpace(builder.Configuration["OTEL_EXPORTER_OTLP_ENDPOINT"]);
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if (useOtlpExporter)
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{
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builder.Services.Configure<OpenTelemetryLoggerOptions>(logging => logging.AddOtlpExporter());
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builder.Services.ConfigureOpenTelemetryMeterProvider(metrics => metrics.AddOtlpExporter());
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builder.Services.ConfigureOpenTelemetryTracerProvider(tracing => tracing.AddOtlpExporter());
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}
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var app = builder.Build();
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string HandleRollDice([FromServices]ILogger<Program> logger, string? player)
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{
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var result = RollDice();
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if (string.IsNullOrEmpty(player))
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{
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logger.LogInformation("Anonymous player is rolling the dice: {result}", result);
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}
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else
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{
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logger.LogInformation("{player} is rolling the dice: {result}", player, result);
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}
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return result.ToString(CultureInfo.InvariantCulture);
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}
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int RollDice()
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{
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return Random.Shared.Next(1, 7);
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}
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app.MapGet("/rolldice/{player?}", HandleRollDice);
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app.Run();

‎examples/dotnet/Properties/launchSettings.json

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{
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"$schema": "http://json.schemastore.org/launchsettings.json",
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"profiles": {
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"http": {
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"commandName": "Project",
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"dotnetRunMessages": true,
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"launchBrowser": true,
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"applicationUrl": "http://localhost:8083",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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}
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}
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}

‎examples/dotnet/appsettings.Development.json

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{
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"Logging": {
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"LogLevel": {
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"Default": "Information",
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"Microsoft.AspNetCore": "Warning"
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}
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}
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}

‎examples/dotnet/appsettings.json

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{
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"Logging": {
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"LogLevel": {
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"Default": "Information",
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"Microsoft.AspNetCore": "Warning"
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}
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},
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"AllowedHosts": "*"
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}

‎examples/dotnet/docker-compose.yml

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services:
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rolldice:
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image: rolldice
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build:
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context: .
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dockerfile: Dockerfile
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# args:
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# - configuration=Debug
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ports:
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- 8083:8083
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environment:
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- ASPNETCORE_ENVIRONMENT=Development
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- OTEL_EXPORTER_OTLP_ENDPOINT=http://collector:4317
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- OTEL_EXPORTER_OTLP_PROTOCOL=grpc
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otel-lgtm:
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image: grafana/otel-lgtm
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ports:
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- 3000:3000
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- 4317:4317
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- 4318:4318

‎examples/dotnet/rolldice.csproj

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<Project Sdk="Microsoft.NET.Sdk.Web">
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<PropertyGroup>
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<TargetFramework>net8.0</TargetFramework>
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<Nullable>enable</Nullable>
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<ImplicitUsings>enable</ImplicitUsings>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="OpenTelemetry.Exporter.Console" Version="1.8.1" />
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<PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.8.1" />
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<PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.8.1" />
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<PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.8.1" />
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</ItemGroup>
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</Project>

‎examples/dotnet/run.sh

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#!/bin/bash
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# TODO
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# set -euo pipefail
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# export OTEL_METRIC_EXPORT_INTERVAL="5000" # so we don't have to wait 60s for metrics
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# export OTEL_RESOURCE_ATTRIBUTES="service.name=rolldice,service.instance.id=localhost:8081"
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# # Run the application
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# export OTEL_EXPORTER_OTLP_INSECURE="true" # use http instead of https (needed because of https://github.com/open-telemetry/opentelemetry-go/issues/4834)
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# go run .

‎generate-traffic.sh

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#!/bin/bash
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watch 'curl -s http://localhost:8080/rolldice; curl -s http://localhost:8081/rolldice; curl -s http://localhost:8082/rolldice'
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watch 'curl -s http://localhost:8080/rolldice; curl -s http://localhost:8081/rolldice; curl -s http://localhost:8082/rolldice; curl -s http://localhost:8083/rolldice'

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