add task to regenerate

Author: Watson1978

Gemfile

@@ -5,6 +5,7 @@ source "https://rubygems.org"
 # Specify your gem's dependencies in fluent-plugin-otlp.gemspec
 gemspec
 
+gem "grpc-tools"
 gem "irb"
 gem "rake", "~> 13.0"
 gem "rubocop", "~> 1.75"

Rakefile

@@ -2,6 +2,7 @@
 
 require "bundler/gem_tasks"
 require "rake/testtask"
+require "tmpdir"
 
 Rake::TestTask.new(:test) do |t|
   t.libs << "test"
@@ -10,3 +11,21 @@ Rake::TestTask.new(:test) do |t|
 end
 
 task default: :test
+
+task :"regenerate:opentelemetry" do
+  lib_path = File.expand_path("lib/opentelemetry")
+
+  rm_rf lib_path
+  cd Dir.tmpdir do
+    sh "git clone https://github.com/open-telemetry/opentelemetry-proto.git --depth 1"
+    cd "opentelemetry-proto" do
+      files = Dir.glob("opentelemetry/**/*.proto")
+
+      mkdir_p "gen"
+      sh "grpc_tools_ruby_protoc --grpc_out=./gen --ruby_out=./gen --proto_path=. #{files.join(' ')}"
+      mv "./gen/opentelemetry", lib_path
+    end
+  ensure
+    rm_rf "opentelemetry-proto"
+  end
+end