Add a Puma launcher

Author: ekohl

lib/proxy/launcher.rb

@@ -79,8 +79,16 @@ def launch
 
       ::Proxy::PluginInitializer.new(plugins).initialize_plugins
 
-      require 'proxy/launcher/webrick'
-      launcher = ::Launcher::Webrick.new(self)
+      case settings.http_server_type
+      when 'webrick'
+        require 'proxy/launcher/webrick'
+        launcher = ::Launcher::Webrick.new(self)
+      when 'puma'
+        require 'proxy/launcher/puma'
+        launcher = ::Launcher::Puma.new(self)
+      else
+        fail "Unknown http_server_type: #{settings.http_server_type}"
+      end
 
       launcher.launch
     rescue SignalException => e

lib/proxy/launcher/puma.rb

@@ -0,0 +1,87 @@
+require 'puma'
+require 'puma/configuration'
+require 'proxy/app'
+
+module Launcher
+  class Puma
+    attr_reader :launcher
+
+    def initialize(launcher)
+      @launcher = launcher
+    end
+
+    def launch
+      ::Puma::Launcher.new(conf).run
+    end
+
+    private
+
+    def conf
+      ::Puma::Configuration.new do |user_config|
+        user_config.environment('production')
+        user_config.app(app)
+
+        if launcher.http_enabled?
+          bind_hosts do |host|
+            user_config.bind "tcp://#{host}:#{settings.http_port}"
+          end
+        end
+
+        if launcher.https_enabled?
+          ssl_options = {
+            key: settings.ssl_private_key,
+            cert: settings.ssl_certificate,
+            ca: settings.ssl_ca_file,
+            ssl_cipher_filter: launcher.ciphers.join(':'),
+            verify_mode: 'peer',
+            no_tlsv1: true,
+            no_tlsv1_1: true,
+          }
+
+          bind_hosts do |host|
+            user_config.ssl_bind(host, settings.https_port, ssl_options)
+          end
+        end
+
+        user_config.on_restart do
+          ::Proxy::LogBuffer::Decorator.instance.roll_log = true
+        end
+
+        begin
+          user_config.plugin('systemd')
+        rescue ::Puma::UnknownPlugin
+        end
+      end
+    end
+
+    def app
+      ::Proxy::App.new(launcher.plugins)
+    end
+
+    def binds
+    end
+
+    def bind_hosts
+      settings.bind_host.each do |host|
+        if host == '*'
+          yield ipv6_enabled? ? '[::]' : '0.0.0.0'
+        else
+          begin
+            addr = IPAddr.new(host)
+            yield addr.ipv6? ? "[#{addr}]" : addr.to_s
+          rescue IPAddr::InvalidAddressError
+            yield host
+          end
+        end
+      end
+    end
+
+    def settings
+      launcher.settings
+    end
+
+    def ipv6_enabled?
+      File.exist?('/proc/net/if_inet6') || (RUBY_PLATFORM =~ /cygwin|mswin|mingw|bccwin|wince|emx/)
+    end
+  end
+end

lib/proxy/settings/global.rb

@@ -2,6 +2,7 @@ module ::Proxy::Settings
   class Global < ::OpenStruct
     DEFAULT_SETTINGS = {
       :settings_directory => Pathname.new(__dir__).join("..", "..", "..", "config", "settings.d").expand_path.to_s,
+      :http_server_type => 'puma',
       :https_port => 8443,
       :log_file => "/var/log/foreman-proxy/proxy.log",
       :file_rolling_keep => 6,