Release workflow for UDP Exporter (#143)

* add sample app and release workflow for udp exporter

* remove unneeded files

Author: jj22ee

.github/workflows/release-udp-exporter.yml

@@ -0,0 +1,78 @@
+name: Release ADOT OTLP UDP Exporter
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: The version to tag the release with, e.g., 1.2.0
+        required: true
+
+env:
+  RUBY_VERSION: "3.2"
+
+jobs:
+  build:
+    environment: Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Contrib Repo @ SHA - ${{ github.sha }}
+        uses: actions/checkout@v4
+
+      # Install ruby and bundle dependencies and cache!
+      - name: Install Ruby ${{ env.RUBY_VERSION }} with dependencies
+        uses: ruby/setup-ruby@v1.221.0
+        with:
+          ruby-version: "${{ env.RUBY_VERSION }}"
+          working-directory: "exporter/otlp-udp"
+          bundler: "latest"
+          bundler-cache: true
+          cache-version: "v1-ruby-otlp-udp"
+
+      - name: Run Unit Tests
+        run: |
+          cd exporter/otlp-udp
+          bundle install
+          bundle exec rake test
+
+      - name: Download and run X-Ray Daemon
+        run: |
+          mkdir xray-daemon
+          cd xray-daemon
+          wget https://s3.us-west-2.amazonaws.com/aws-xray-assets.us-west-2/xray-daemon/aws-xray-daemon-linux-3.x.zip
+          unzip aws-xray-daemon-linux-3.x.zip
+          ./xray -o -n us-west-2 -f ./daemon-logs.log --log-level debug &
+
+      - name: Setup Sample App
+        run: |
+          cd sample-apps/integ-test-http-server/ruby-on-rails
+          bundle install
+
+      - name: Run Sample App in Background
+        run: |
+          cd sample-apps/integ-test-http-server/ruby-on-rails
+          LISTEN_ADDRESS=127.0.0.1:8080 rails server &
+          # Wait for test server to initialize
+          sleep 5
+
+      - name: Call Sample App Endpoint
+        id: call-endpoint
+        run: |
+          echo "traceId=$(curl localhost:8080/test)" >> $GITHUB_OUTPUT
+
+      - name: Verify X-Ray daemon received traces
+        run: |
+          sleep 10
+          echo "X-Ray daemon logs:"
+          cat xray-daemon/daemon-logs.log
+          # Check if the daemon received and processed some data
+          if grep -q "sending.*batch" xray-daemon/daemon-logs.log; then
+            echo "✅ X-Ray daemon processed trace data (AWS upload errors are expected)"
+            exit 0
+          elif grep -q "processor:.*segment" xray-daemon/daemon-logs.log; then
+            echo "✅ X-Ray daemon processed segment data (AWS upload errors are expected)"
+            exit 0
+          else
+            echo "❌ No evidence of traces being received by X-Ray daemon"
+            exit 1
+          fi
+
+      # TODO: Publish OTLP UDP Exporter to RubyGems

sample-apps/integ-test-http-server/ruby-on-rails/Gemfile

@@ -0,0 +1,35 @@
+source 'https://rubygems.org'
+git_source(:github) { |_repo| "https://github.com/#{repo}.git" }
+
+ruby '~> 3.2.0'
+
+# Bundle edge Rails instead: gem 'rails', github: 'rails/rails', branch: 'main'
+gem 'rails', '~> 7.0.4.2'
+
+# Use the Puma web server [https://github.com/puma/puma]
+gem 'puma', '~> 6.3'
+
+# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
+gem 'tzinfo-data', platforms: %i[mingw mswin x64_mingw jruby]
+
+group :development do
+  # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
+  gem 'debug', platforms: %i[mri mingw x64_mingw]
+end
+
+gem 'aws-sdk-s3', '~> 1'
+gem 'faraday'
+
+gem 'opentelemetry-exporter-otlp', '>= 0.21.2'
+gem 'opentelemetry-sdk'
+
+gem 'opentelemetry-propagator-xray'
+
+gem 'opentelemetry-instrumentation-aws_sdk', '>= 0.2.1'
+gem 'opentelemetry-instrumentation-faraday'
+gem 'opentelemetry-instrumentation-rails'
+
+# Test the current commit of `aws-opentelemetry-exporter-otlp-udp`
+gem 'aws-opentelemetry-exporter-otlp-udp', path: '../../../exporter/otlp-udp'
+
+gem 'concurrent-ruby', '1.3.4'