Make apps uniform

rack.rb

@@ -1,3 +1,5 @@
+#!/usr/bin/env ruby
+
 begin
   require "bundler/inline"
 rescue LoadError => e
@@ -21,15 +23,17 @@ end.tap do |m|
 end.first
 server = ARGV[1] || 'thin'
 
+gems = match.fetch('gem', {})
 gemfile(true) do
   source "https://rubygems.org"
 
-  ruby match['ruby']
+  ruby match['ruby'] if match['ruby']
 
   gem 'rack', "~> #{version}.0"
-  gem server
+  gem server unless gems.key?(server)
+  gem 'ddtrace'
 
-  match.fetch('gem', []).each do |name, requirement|
+  gems.each do |name, requirement|
     gem name, requirement
   end
 end
@@ -37,7 +41,25 @@ end
 require 'rack'
 require 'json'
 
+require 'ddtrace'
+Datadog.configure do |c|
+  c.diagnostics.debug = true
+
+  c.telemetry.enabled = true
+
+  c.remote.enabled = true
+
+  c.tracing.enabled = true
+  c.tracing.instrument :rack
+
+  c.appsec.enabled = true
+  c.appsec.instrument :rack
+end
+
 App = Rack::Builder.new do
+  use Datadog::Tracing::Contrib::Rack::TraceMiddleware
+  use Datadog::AppSec::Contrib::Rack::RequestMiddleware
+
   map "/hello/world" do
     run -> (env) { [200, { 'content-type' => 'application/json' }, [JSON.dump({ hello: :world })]] }
   end