From 0cd8b96cd07224451ae11d838a4fa3836be9aef9 Mon Sep 17 00:00:00 2001
From: bigtux <m171c0@gmail.com>
Date: Fri, 6 Feb 2026 19:18:49 -0300
Subject: [PATCH] feat: add .NET auto-instrumentation script

---
 .../docker/dotnet-instrumentation/Dockerfile  | 13 ++++
 .../docker-compose.dotnet.yml                 | 43 +++++++++++++
 deploy/docker/instrument-dotnet.sh            | 64 +++++++++++++++++++
 3 files changed, 120 insertions(+)
 create mode 100644 deploy/docker/dotnet-instrumentation/Dockerfile
 create mode 100644 deploy/docker/dotnet-instrumentation/docker-compose.dotnet.yml
 create mode 100755 deploy/docker/instrument-dotnet.sh

diff --git a/deploy/docker/dotnet-instrumentation/Dockerfile b/deploy/docker/dotnet-instrumentation/Dockerfile
new file mode 100644
index 0000000..4666769
--- /dev/null
+++ b/deploy/docker/dotnet-instrumentation/Dockerfile
@@ -0,0 +1,13 @@
+FROM mcr.microsoft.com/dotnet/runtime:8.0 AS base
+
+# Download OpenTelemetry .NET auto-instrumentation
+RUN apt-get update && apt-get install -y curl unzip && \
+    curl -sSL https://github.com/open-telemetry/opentelemetry-dotnet-instrumentation/releases/download/v1.7.0/opentelemetry-dotnet-instrumentation-linux-glibc-x64.zip -o /tmp/otel.zip && \
+    unzip /tmp/otel.zip -d /opt/otel-dotnet && \
+    rm /tmp/otel.zip && \
+    chmod -R 755 /opt/otel-dotnet
+
+# Create volume for sharing instrumentation files
+VOLUME /otel-dotnet
+
+CMD ["cp", "-r", "/opt/otel-dotnet/.", "/otel-dotnet/"]
diff --git a/deploy/docker/dotnet-instrumentation/docker-compose.dotnet.yml b/deploy/docker/dotnet-instrumentation/docker-compose.dotnet.yml
new file mode 100644
index 0000000..72690f7
--- /dev/null
+++ b/deploy/docker/dotnet-instrumentation/docker-compose.dotnet.yml
@@ -0,0 +1,43 @@
+# Add this to your existing docker-compose.yml to enable .NET tracing
+# 
+# Usage:
+# 1. Add the otel-init service
+# 2. Add environment variables and volumes to your .NET app
+# 3. Set OTEL_SERVICE_NAME for each service
+
+services:
+  # Init container that provides OpenTelemetry .NET instrumentation
+  otel-init:
+    build: 
+      context: .
+      dockerfile: Dockerfile
+    volumes:
+      - otel-dotnet:/otel-dotnet
+    restart: "no"
+
+  # Example: Your .NET app with tracing enabled
+  # my-dotnet-app:
+  #   image: your-image:tag
+  #   depends_on:
+  #     otel-init:
+  #       condition: service_completed_successfully
+  #   environment:
+  #     # OpenTelemetry config
+  #     - OTEL_SERVICE_NAME=my-dotnet-app
+  #     - OTEL_EXPORTER_OTLP_ENDPOINT=http://ophion:8080
+  #     - OTEL_EXPORTER_OTLP_PROTOCOL=http/protobuf
+  #     - OTEL_TRACES_EXPORTER=otlp
+  #     - OTEL_METRICS_EXPORTER=otlp
+  #     - OTEL_LOGS_EXPORTER=otlp
+  #     # .NET CLR profiler config
+  #     - CORECLR_ENABLE_PROFILING=1
+  #     - CORECLR_PROFILER={918728DD-259F-4A6A-AC2B-B85E1B658571}
+  #     - CORECLR_PROFILER_PATH=/otel-dotnet/linux-x64/OpenTelemetry.AutoInstrumentation.Native.so
+  #     - DOTNET_ADDITIONAL_DEPS=/otel-dotnet/AdditionalDeps
+  #     - DOTNET_SHARED_STORE=/otel-dotnet/store
+  #     - DOTNET_STARTUP_HOOKS=/otel-dotnet/net/OpenTelemetry.AutoInstrumentation.StartupHook.dll
+  #   volumes:
+  #     - otel-dotnet:/otel-dotnet:ro
+
+volumes:
+  otel-dotnet:
diff --git a/deploy/docker/instrument-dotnet.sh b/deploy/docker/instrument-dotnet.sh
new file mode 100755
index 0000000..977c5f0
--- /dev/null
+++ b/deploy/docker/instrument-dotnet.sh
@@ -0,0 +1,64 @@
+#!/bin/bash
+# Script para adicionar tracing a containers .NET existentes
+# Uso: ./instrument-dotnet.sh <container_name> <ophion_server>
+
+CONTAINER_NAME=$1
+OPHION_SERVER=${2:-http://10.83.23.4:8080}
+
+if [ -z "$CONTAINER_NAME" ]; then
+    echo "Uso: $0 <container_name> [ophion_server]"
+    echo "Exemplo: $0 siga-certificacao-api http://10.83.23.4:8080"
+    exit 1
+fi
+
+# Download OTel .NET instrumentation if not exists
+OTEL_DIR="/opt/otel-dotnet"
+if [ ! -d "$OTEL_DIR" ]; then
+    echo "📥 Baixando OpenTelemetry .NET instrumentation..."
+    curl -sSL https://github.com/open-telemetry/opentelemetry-dotnet-instrumentation/releases/download/v1.7.0/opentelemetry-dotnet-instrumentation-linux-glibc-x64.zip -o /tmp/otel.zip
+    mkdir -p $OTEL_DIR
+    unzip -q /tmp/otel.zip -d $OTEL_DIR
+    rm /tmp/otel.zip
+    chmod -R 755 $OTEL_DIR
+    echo "✅ OpenTelemetry instalado em $OTEL_DIR"
+fi
+
+# Get current container info
+IMAGE=$(docker inspect --format='{{.Config.Image}}' $CONTAINER_NAME 2>/dev/null)
+if [ -z "$IMAGE" ]; then
+    echo "❌ Container $CONTAINER_NAME não encontrado"
+    exit 1
+fi
+
+echo "🔄 Recriando container $CONTAINER_NAME com tracing..."
+
+# Get container config
+PORTS=$(docker inspect --format='{{range $p, $conf := .NetworkSettings.Ports}}{{if $conf}}-p {{(index $conf 0).HostPort}}:{{$p}} {{end}}{{end}}' $CONTAINER_NAME | sed 's/\/tcp//g')
+NETWORK=$(docker inspect --format='{{range $net, $conf := .NetworkSettings.Networks}}{{$net}}{{end}}' $CONTAINER_NAME | head -1)
+
+# Stop and remove old container
+docker stop $CONTAINER_NAME 2>/dev/null
+docker rm $CONTAINER_NAME 2>/dev/null
+
+# Run with instrumentation
+docker run -d \
+    --name $CONTAINER_NAME \
+    --network $NETWORK \
+    $PORTS \
+    -e OTEL_SERVICE_NAME=$CONTAINER_NAME \
+    -e OTEL_EXPORTER_OTLP_ENDPOINT=$OPHION_SERVER \
+    -e OTEL_EXPORTER_OTLP_PROTOCOL=http/protobuf \
+    -e OTEL_TRACES_EXPORTER=otlp \
+    -e OTEL_METRICS_EXPORTER=none \
+    -e OTEL_LOGS_EXPORTER=none \
+    -e CORECLR_ENABLE_PROFILING=1 \
+    -e CORECLR_PROFILER="{918728DD-259F-4A6A-AC2B-B85E1B658571}" \
+    -e CORECLR_PROFILER_PATH=$OTEL_DIR/linux-x64/OpenTelemetry.AutoInstrumentation.Native.so \
+    -e DOTNET_ADDITIONAL_DEPS=$OTEL_DIR/AdditionalDeps \
+    -e DOTNET_SHARED_STORE=$OTEL_DIR/store \
+    -e DOTNET_STARTUP_HOOKS=$OTEL_DIR/net/OpenTelemetry.AutoInstrumentation.StartupHook.dll \
+    -v $OTEL_DIR:$OTEL_DIR:ro \
+    $IMAGE
+
+echo "✅ Container $CONTAINER_NAME recriado com tracing!"
+echo "📊 Traces serão enviados para: $OPHION_SERVER"