add Rack handler for Puma

lib/rack/handler/puma.rb

@@ -0,0 +1,33 @@
+require 'rack/handler'
+require 'puma'
+
+module Rack
+  module Handler
+    module Puma
+      DEFAULT_OPTIONS = {:Host => '0.0.0.0', :Port => 8080, :Threads => '0:16'}
+
+      def self.run(app, options = {})
+        options  = DEFAULT_OPTIONS.merge(options)
+        server   = ::Puma::Server.new(app)
+        min, max = options[:Threads].split(':', 2)
+
+        server.add_tcp_listener options[:Host], options[:Port]
+        server.min_threads = Integer(min)
+        server.max_threads = Integer(max)
+        yield server if block_given?
+
+        server.run.join
+      end
+
+      def self.valid_options
+        {
+          "Host=HOST"       => "Hostname to listen on (default: localhost)",
+          "Port=PORT"       => "Port to listen on (default: 8080)",
+          "Threads=MIN:MAX" => "min:max threads to use (default 0:16)"
+        }
+      end
+    end
+
+    register :puma, Puma
+  end
+end

test/test_rack_handler.rb

@@ -0,0 +1,10 @@
+require 'test/unit'
+
+class TestPumaUnixSocket < Test::Unit::TestCase
+  def test_handler
+    handler = Rack::Handler.get(:puma)
+    assert_equal Rack::Handler::Puma, handler
+    handler = Rack::Handler.get('Puma')
+    assert_equal Rack::Handler::Puma, handler
+  end
+end