add release workflow script

.github/workflows/fetch_release.rb

@@ -0,0 +1,71 @@
+#!/usr/bin/env ruby
+
+require 'bundler/inline'
+require 'json'
+require 'fileutils'
+require 'uri'
+require 'net/http'
+require 'digest/sha2'
+
+gemfile do
+  source 'https://rubygems.org'
+  gem 'octokit'
+end
+
+root = File.expand_path('../..', __dir__)
+
+Dir.chdir(root)
+CONFIG = JSON.parse(File.read('skylight.json'))
+VERSION = CONFIG.fetch('version')
+CHECKSUMS = CONFIG.fetch('otlp_checksums')
+BASE_URL = 'https://s3.amazonaws.com/skylight-agent-packages/skylight-native'.freeze
+REPO = 'tildeio/skylight-otlp'
+TOKEN = ENV.fetch('GITHUB_TOKEN')
+
+def download_artifact(platform:, checksum:, version: VERSION, base_url: BASE_URL)
+  filename = "skylight_otlp_#{platform}.tar.gz"
+  output_filename = filename.sub('skylight_otlp', "skylight_#{version}")
+  path = File.join("artifacts/#{output_filename}")
+  FileUtils.mkdir_p(File.dirname(path))
+
+  uri = URI("#{base_url}/#{version}/#{filename}")
+  digest = Digest::SHA2.new
+  puts "fetching Skylight for OTLP; platform=#{platform}"
+
+  Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
+    request = Net::HTTP::Get.new uri
+    http.request request do |response|
+      raise response.code unless response.code == '200'
+
+      File.open(path, 'wb') do |f|
+        response.read_body do |chunk|
+          digest << chunk
+          f.write(chunk)
+        end
+      end
+    end
+  end
+
+  fetched_checksum = digest.hexdigest
+
+  return if checksum == fetched_checksum
+
+  raise "non-matching checksum (expected = #{checksum}; actual = #{fetched_checksum} for #{platform}"
+end
+
+CHECKSUMS.each do |platform, checksum|
+  download_artifact(platform: platform, checksum: checksum)
+end
+
+octokit = Octokit::Client.new(access_token: TOKEN)
+puts 'creating release...'
+release = octokit.create_release(REPO, VERSION,
+                                 name: "Skylight for OTLP #{VERSION}", target_commitish: 'main', draft: true, prerelease: true)
+
+puts "Release id #{release.id} tagged #{VERSION} (#{release.url})"
+
+Dir['artifacts/*'].each do |file|
+  puts "uploading #{file}..."
+  asset = octokit.upload_asset(release.url, file, content_type: 'application/gzip')
+  puts asset.url
+end

.github/workflows/release.yml

@@ -0,0 +1,20 @@
+name: Release
+on:
+  push:
+    branches:
+      - main
+jobs:
+  create-release:
+    permissions:
+      contents: write
+    if: github.event.pull_request.merged == true
+    runs-on: ubuntu-latest
+    steps:
+      - name: get version
+        run: |
+        echo "::set-output name=version::$(ruby .github/workflows/fetch_release.rb --version)"
+      - name: download artifacts and create release
+        id: download_artifacts
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: "ruby .github/workflows/fetch_release.rb"

CHANGELOG.md

@@ -0,0 +1,4 @@
+# 5.2.1-3668ebb
+
+- [FEATURE] Initial release workflow test
+- [FEATURE] Skylight for OTLP

skylight.json

@@ -0,0 +1,13 @@
+{
+  "version": "5.2.1-3668ebb",
+  "otlp_checksums": {
+    "x86-linux": "b6211d2526064d58f2cb9143afca8ecd9e96a8e712af80ec878fa60c410f4519",
+    "x86_64-linux": "9708adaed8b687e43c906b429d84a5e3778152e7bffac1770cb26e9e39e296d5",
+    "x86_64-linux-musl": "4d5ee704d378bad2ff800195652976444f414f7c78eb0796679eeda68938dbd3",
+    "x86_64-darwin": "afbecfa36ed7e31af498c8b834ec5e13367c82f0b762dfcb32f4983a70b5732d",
+    "x86_64-freebsd": "30e84371330b63ec2665c4fb6378fb7b42d5c969d6791ae5ba1f690c242bc648",
+    "aarch64-linux": "08967a97ac7f59b95117a4b6d8ef48cbbe2d009126dc8d4bd10c3467ebf91250",
+    "aarch64-linux-musl": "b90806f2f0230b38b753579921ee61f3186b029e15c4a3d7ff7f1737925a7115",
+    "aarch64-darwin": "d0e17e7e4b2a84501c0ec2383658a30e923030e19233ad251d803b7111cc38ca"
+  }
+}