feat: add .NET example

Author: maxbrunet

deploy-apps.sh

@@ -27,6 +27,11 @@ echo "Building the Rust demo"
 make -C rust build
 kubectl apply -f ./rust/deployment.yaml
 
+echo "Building the .NET demo"
+
+make -C dotnet build
+kubectl apply -f ./dotnet/deployment.yaml
+
 echo "Building the Python demo"
 
 make -C python build

dotnet/.gitignore

@@ -0,0 +1,14 @@
+# Created by https://www.toptal.com/developers/gitignore/api/dotnetcore
+# Edit at https://www.toptal.com/developers/gitignore?templates=dotnetcore
+
+### DotnetCore ###
+# .NET Core build folders
+bin/
+obj/
+
+# Common node modules locations
+/node_modules
+/wwwroot/node_modules
+
+# End of https://www.toptal.com/developers/gitignore/api/dotnetcore
+

dotnet/Dockerfile

@@ -0,0 +1,24 @@
+FROM mcr.microsoft.com/dotnet/runtime:7.0 AS base
+WORKDIR /app
+
+# Creates a non-root user with an explicit UID and adds permission to access the /app folder
+# For more info, please refer to https://aka.ms/vscode-docker-dotnet-configure-containers
+RUN adduser -u 5678 --disabled-password --gecos "" appuser && chown -R appuser /app
+USER appuser
+
+FROM mcr.microsoft.com/dotnet/sdk:7.0 AS build
+WORKDIR /src
+COPY ["demo.csproj", "./"]
+RUN dotnet restore "demo.csproj"
+COPY . .
+WORKDIR "/src/."
+RUN dotnet build "demo.csproj" -c Release -o /app/build
+
+FROM build AS publish
+RUN dotnet publish "demo.csproj" -c Release -o /app/publish
+
+FROM base AS final
+ENV DOTNET_PerfMapEnabled=1
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "demo.dll"]

dotnet/Makefile

@@ -0,0 +1,3 @@
+.PHONY: build
+build:
+	docker build -t parca-demo:dotnet .

dotnet/Program.cs

@@ -0,0 +1,29 @@
+using System;
+
+namespace Demo
+{
+  class Program
+  {
+    static int Fibonacci(int n)
+    {
+      int a = 0, b = 1, tmp;
+
+      for (int i = 0; i < n; i++)
+      {
+        tmp = a;
+        a = b;
+        b += tmp;
+      }
+
+      return a;
+    }
+
+    static void Main(string[] args)
+    {
+      while (true)
+      {
+        Console.WriteLine(Fibonacci(42));
+      }
+    }
+  }
+}

dotnet/README.md

@@ -0,0 +1,3 @@
+# .NET
+
+See https://learn.microsoft.com/en-us/dotnet/core/runtime-config/debugging-profiling#export-perf-maps

dotnet/demo.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

dotnet/deployment.yaml

@@ -0,0 +1,24 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app.kubernetes.io/name: demo-dotnet
+  name: dotnet
+  namespace: parca
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: demo-dotnet
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: demo-dotnet
+    spec:
+      containers:
+      - image: parca-demo:dotnet
+        name: dotnet
+        resources:
+          limits:
+            cpu: '100m'
+            memory: '256Mi'