[ruby/grape] Use Iodine instead of Unicorn

Unicorn is no longer maintained.
Replace with Iodine, as it performs better in these benchmarks.

Author: p8

frameworks/Ruby/grape/Gemfile

@@ -1,8 +1,14 @@
 source 'https://rubygems.org'
 
 gem 'mysql2', '0.5.6'
-gem 'unicorn', '6.1.0'
-gem 'puma', '~> 7.1'
 gem 'activerecord', '~> 8.1.0', :require => 'active_record'
 gem 'grape', '2.1.1'
 gem 'json', '~> 2.9'
+
+group :iodine, optional: true do
+  gem "iodine", "~> 0.7", require: false
+end
+
+group :puma, optional: true do
+  gem "puma", "~> 7.1", require: false
+end

frameworks/Ruby/grape/Gemfile.lock

@@ -50,8 +50,8 @@ GEM
       zeitwerk
     i18n (1.14.7)
       concurrent-ruby (~> 1.0)
+    iodine (0.7.58)
     json (2.16.0)
-    kgio (2.11.4)
     logger (1.6.6)
     minitest (5.25.4)
     mustermann (3.0.3)
@@ -63,15 +63,11 @@ GEM
     puma (7.1.0)
       nio4r (~> 2.0)
     rack (3.2.3)
-    raindrops (0.20.1)
     ruby2_keywords (0.0.5)
     securerandom (0.4.1)
     timeout (0.4.3)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    unicorn (6.1.0)
-      kgio (~> 2.6)
-      raindrops (~> 0.7)
     uri (1.0.3)
     zeitwerk (2.7.2)
 
@@ -83,10 +79,10 @@ PLATFORMS
 DEPENDENCIES
   activerecord (~> 8.1.0)
   grape (= 2.1.1)
+  iodine (~> 0.7)
   json (~> 2.9)
   mysql2 (= 0.5.6)
   puma (~> 7.1)
-  unicorn (= 6.1.0)
 
 BUNDLED WITH
    2.7.0

frameworks/Ruby/grape/README.md

@@ -12,9 +12,9 @@ comparing a variety of web servers.
 The tests were run with:
 
 * [Ruby 3.4](http://www.ruby-lang.org/)
-* [Grape 2.0.0](http://www.ruby-grape.org/)
-* [Unicorn 6.1.0](https://yhbt.net/unicorn/)
-* [Puma 6.4](https://puma.io/)
+* [Grape 2.1](http://www.ruby-grape.org/)
+* [Iodine](https://github.com/boazsegev/iodine)
+* [Puma 7](https://puma.io/)
 
 ## Paths & Source for Tests
 

frameworks/Ruby/grape/benchmark_config.json

@@ -22,7 +22,7 @@
       "notes": "",
       "versus": "rack-puma-mri"
     },
-    "unicorn": {
+    "iodine": {
       "json_url": "/json",
       "db_url": "/db",
       "query_url": "/query?queries=",
@@ -36,12 +36,12 @@
       "language": "Ruby",
       "orm": "Full",
       "platform": "Rack",
-      "webserver": "Unicorn",
+      "webserver": "Iodine",
       "os": "Linux",
       "database_os": "Linux",
-      "display_name": "grape [unicorn]",
+      "display_name": "grape [iodine]",
       "notes": "",
-      "versus": "rack-unicorn-mri"
+      "versus": "rack-iodine-mri"
     }
   }]
 }

frameworks/Ruby/grape/config.ru

@@ -79,7 +79,7 @@ module Acme
   class API < Grape::API
     before do
       header 'Date', Time.now.httpdate if defined?(Puma)
-      header 'Server', 'WebServer'
+      header 'Server', 'grape'
     end
     logger nil
     content_type :json, 'application/json'

frameworks/Ruby/grape/config.toml

@@ -17,7 +17,7 @@ platform = "Rack"
 webserver = "Puma"
 versus = "rack-puma-mri"
 
-[unicorn]
+[iodine]
 urls.plaintext = "/plaintext"
 urls.json = "/json"
 urls.db = "/db"
@@ -30,5 +30,5 @@ database_os = "Linux"
 os = "Linux"
 orm = "Full"
 platform = "Rack"
-webserver = "Unicorn"
-versus = "rack-unicorn-mri"
+webserver = "Iodine"
+versus = "rack-iodine-mri"

frameworks/Ruby/grape/config/nginx.conf

@@ -13,8 +13,11 @@ ADD ./ /grape
 
 WORKDIR /grape
 
+RUN bundle config set with 'iodine'
 RUN bundle install --jobs=4 --gemfile=/grape/Gemfile
 
+ENV RACK_ENV=production
+
 EXPOSE 8080
 
-CMD nginx -c /grape/config/nginx.conf && bundle exec unicorn -E production -c config/unicorn.rb
+CMD bundle exec iodine -p 8080 -w $(ruby config/auto_tune.rb | grep -Eo '[0-9]+' | head -n 1)

frameworks/Ruby/grape/config/unicorn.rb

@@ -11,6 +11,7 @@ ADD ./ /grape
 
 WORKDIR /grape
 
+RUN bundle config set with 'puma'
 RUN bundle install --jobs=4 --gemfile=/grape/Gemfile
 
 ENV WEB_CONCURRENCY=auto