launcher.rb in piesync-puma-5.4.0.1

- old
+ new

@@ -1,15 +1,12 @@
 # frozen_string_literal: true
 
 require 'puma/events'
 require 'puma/detect'
-
 require 'puma/cluster'
 require 'puma/single'
-
 require 'puma/const'
-
 require 'puma/binder'
 
 module Puma
   # Puma::Launcher is the single entry point for starting a Puma server based on user
   # configuration. It is responsible for taking user supplied arguments and resolving them
@@ -48,51 +45,59 @@
       @events        = launcher_args[:events] || Events::DEFAULT
       @argv          = launcher_args[:argv] || []
       @original_argv = @argv.dup
       @config        = conf
 
-      @binder        = Binder.new(@events)
-      @binder.import_from_env
+      @binder        = Binder.new(@events, conf)
+      @binder.create_inherited_fds(ENV).each { |k| ENV.delete k }
+      @binder.create_activated_fds(ENV).each { |k| ENV.delete k }
 
       @environment = conf.environment
 
       # Advertise the Configuration
       Puma.cli_config = @config if defined?(Puma.cli_config)
 
       @config.load
 
+      if @config.options[:bind_to_activated_sockets]
+        @config.options[:binds] = @binder.synthesize_binds_from_activated_fs(
+          @config.options[:binds],
+          @config.options[:bind_to_activated_sockets] == 'only'
+        )
+      end
+
       @options = @config.options
       @config.clamp
 
+      @events.formatter = Events::PidFormatter.new if clustered?
+      @events.formatter = options[:log_formatter] if @options[:log_formatter]
+
       generate_restart_data
 
       if clustered? && !Process.respond_to?(:fork)
         unsupported "worker mode not supported on #{RUBY_ENGINE} on this platform"
       end
 
-      if @options[:daemon] && Puma.windows?
-        unsupported 'daemon mode not supported on Windows'
-      end
-
       Dir.chdir(@restart_dir)
 
       prune_bundler if prune_bundler?
 
       @environment = @options[:environment] if @options[:environment]
       set_rack_environment
 
       if clustered?
-        @events.formatter = Events::PidFormatter.new
         @options[:logger] = @events
 
         @runner = Cluster.new(self, @events)
       else
         @runner = Single.new(self, @events)
       end
       Puma.stats_object = @runner
 
       @status = :run
+
+      log_config if ENV['PUMA_LOG_CONFIG']
     end
 
     attr_reader :binder, :events, :config, :options, :restart_dir
 
     # Return stats about the server
@@ -104,41 +109,30 @@
     # the server
     def write_state
       write_pid
 
       path = @options[:state]
+      permission = @options[:state_permission]
       return unless path
 
       require 'puma/state_file'
 
       sf = StateFile.new
       sf.pid = Process.pid
       sf.control_url = @options[:control_url]
       sf.control_auth_token = @options[:control_auth_token]
+      sf.running_from = File.expand_path('.')
 
-      sf.save path
+      sf.save path, permission
     end
 
     # Delete the configured pidfile
     def delete_pidfile
       path = @options[:pidfile]
       File.unlink(path) if path && File.exist?(path)
     end
 
-    # If configured, write the pid of the current process out
-    # to a file.
-    def write_pid
-      path = @options[:pidfile]
-      return unless path
-
-      File.open(path, 'w') { |f| f.puts Process.pid }
-      cur = Process.pid
-      at_exit do
-        delete_pidfile if cur == Process.pid
-      end
-    end
-
     # Begin async shutdown of the server
     def halt
       @status = :halt
       @runner.halt
     end
@@ -181,49 +175,90 @@
 
       @config.plugins.fire_starts self
 
       setup_signals
       set_process_title
+      integrate_with_systemd
       @runner.run
 
       case @status
       when :halt
         log "* Stopping immediately!"
+        @runner.stop_control
       when :run, :stop
         graceful_stop
       when :restart
         log "* Restarting..."
         ENV.replace(previous_env)
-        @runner.before_restart
+        @runner.stop_control
         restart!
       when :exit
         # nothing
       end
+      close_binder_listeners unless @status == :restart
     end
 
-    # Return which tcp port the launcher is using, if it's using TCP
-    def connected_port
-      @binder.connected_port
+    # Return all tcp ports the launcher may be using, TCP or SSL
+    # @!attribute [r] connected_ports
+    # @version 5.0.0
+    def connected_ports
+      @binder.connected_ports
     end
 
+    # @!attribute [r] restart_args
     def restart_args
       cmd = @options[:restart_cmd]
       if cmd
         cmd.split(' ') + @original_argv
       else
         @restart_argv
       end
     end
 
+    def close_binder_listeners
+      @runner.close_control_listeners
+      @binder.close_listeners
+      unless @status == :restart
+        log "=== puma shutdown: #{Time.now} ==="
+        log "- Goodbye!"
+      end
+    end
+
+    # @!attribute [r] thread_status
+    # @version 5.0.0
+    def thread_status
+      Thread.list.each do |thread|
+        name = "Thread: TID-#{thread.object_id.to_s(36)}"
+        name += " #{thread['label']}" if thread['label']
+        name += " #{thread.name}" if thread.respond_to?(:name) && thread.name
+        backtrace = thread.backtrace || ["<no backtrace available>"]
+
+        yield name, backtrace
+      end
+    end
+
     private
 
+    # If configured, write the pid of the current process out
+    # to a file.
+    def write_pid
+      path = @options[:pidfile]
+      return unless path
+      cur_pid = Process.pid
+      File.write path, cur_pid, mode: 'wb:UTF-8'
+      at_exit do
+        delete_pidfile if cur_pid == Process.pid
+      end
+    end
+
     def reload_worker_directory
       @runner.reload_worker_directory if @runner.respond_to?(:reload_worker_directory)
     end
 
     def restart!
-      @config.run_hooks :on_restart, self
+      @events.fire_on_restart!
+      @config.run_hooks :on_restart, self, @events
 
       if Puma.jruby?
         close_binder_listeners
 
         require 'puma/jruby_restart'
@@ -233,52 +268,102 @@
 
         argv = restart_args
         Dir.chdir(@restart_dir)
         Kernel.exec(*argv)
       else
-        redirects = {:close_others => true}
-        @binder.listeners.each_with_index do |(l, io), i|
-          ENV["PUMA_INHERIT_#{i}"] = "#{io.to_i}:#{l}"
-          redirects[io.to_i] = io.to_i
-        end
-
         argv = restart_args
         Dir.chdir(@restart_dir)
-        argv += [redirects] if RUBY_VERSION >= '1.9'
+        ENV.update(@binder.redirects_for_restart_env)
+        argv += [@binder.redirects_for_restart]
         Kernel.exec(*argv)
       end
     end
 
-    def prune_bundler
-      return unless defined?(Bundler)
-      puma = Bundler.rubygems.loaded_specs("puma")
-      dirs = puma.require_paths.map { |x| File.join(puma.full_gem_path, x) }
+    # @!attribute [r] files_to_require_after_prune
+    def files_to_require_after_prune
+      puma = spec_for_gem("puma")
+
+      require_paths_for_gem(puma) + extra_runtime_deps_directories
+    end
+
+    # @!attribute [r] extra_runtime_deps_directories
+    def extra_runtime_deps_directories
+      Array(@options[:extra_runtime_dependencies]).map do |d_name|
+        if (spec = spec_for_gem(d_name))
+          require_paths_for_gem(spec)
+        else
+          log "* Could not load extra dependency: #{d_name}"
+          nil
+        end
+      end.flatten.compact
+    end
+
+    # @!attribute [r] puma_wild_location
+    def puma_wild_location
+      puma = spec_for_gem("puma")
+      dirs = require_paths_for_gem(puma)
       puma_lib_dir = dirs.detect { |x| File.exist? File.join(x, '../bin/puma-wild') }
+      File.expand_path(File.join(puma_lib_dir, "../bin/puma-wild"))
+    end
 
-      unless puma_lib_dir
+    def prune_bundler
+      return if ENV['PUMA_BUNDLER_PRUNED']
+      return unless defined?(Bundler)
+      require_rubygems_min_version!(Gem::Version.new("2.2"), "prune_bundler")
+      unless puma_wild_location
         log "! Unable to prune Bundler environment, continuing"
         return
       end
 
-      deps = puma.runtime_dependencies.map do |d|
-        spec = Bundler.rubygems.loaded_specs(d.name)
-        "#{d.name}:#{spec.version.to_s}"
-      end
+      dirs = files_to_require_after_prune
 
       log '* Pruning Bundler environment'
       home = ENV['GEM_HOME']
-      Bundler.with_clean_env do
+      bundle_gemfile = Bundler.original_env['BUNDLE_GEMFILE']
+      with_unbundled_env do
         ENV['GEM_HOME'] = home
+        ENV['BUNDLE_GEMFILE'] = bundle_gemfile
         ENV['PUMA_BUNDLER_PRUNED'] = '1'
-        wild = File.expand_path(File.join(puma_lib_dir, "../bin/puma-wild"))
-        args = [Gem.ruby, wild, '-I', dirs.join(':'), deps.join(',')] + @original_argv
+        args = [Gem.ruby, puma_wild_location, '-I', dirs.join(':')] + @original_argv
         # Ruby 2.0+ defaults to true which breaks socket activation
-        args += [{:close_others => false}] if RUBY_VERSION >= '2.0'
+        args += [{:close_others => false}]
         Kernel.exec(*args)
       end
     end
 
+    #
+    # Puma's systemd integration allows Puma to inform systemd:
+    #  1. when it has successfully started
+    #  2. when it is starting shutdown
+    #  3. periodically for a liveness check with a watchdog thread
+    #
+
+    def integrate_with_systemd
+      return unless ENV["NOTIFY_SOCKET"]
+
+      begin
+        require 'puma/systemd'
+      rescue LoadError
+        log "Systemd integration failed. It looks like you're trying to use systemd notify but don't have sd_notify gem installed"
+        return
+      end
+
+      log "* Enabling systemd notification integration"
+
+      systemd = Systemd.new(@events)
+      systemd.hook_events
+      systemd.start_watchdog
+    end
+
+    def spec_for_gem(gem_name)
+      Bundler.rubygems.loaded_specs(gem_name)
+    end
+
+    def require_paths_for_gem(gem_spec)
+      gem_spec.full_require_paths
+    end
+
     def log(str)
       @events.log str
     end
 
     def clustered?
@@ -289,19 +374,19 @@
       @events.error(str)
       raise UnsupportedOption
     end
 
     def graceful_stop
+      @events.fire_on_stopped!
       @runner.stop_blocked
-      log "=== puma shutdown: #{Time.now} ==="
-      log "- Goodbye!"
     end
 
     def set_process_title
       Process.respond_to?(:setproctitle) ? Process.setproctitle(title) : $0 = title
     end
 
+    # @!attribute [r] title
     def title
       buffer  = "puma #{Puma::Const::VERSION} (#{@options[:binds].join(',')})"
       buffer += " [#{@options[:tag]}]" if @options[:tag] && !@options[:tag].empty?
       buffer
     end
@@ -309,28 +394,19 @@
     def set_rack_environment
       @options[:environment] = environment
       ENV['RACK_ENV'] = environment
     end
 
+    # @!attribute [r] environment
     def environment
       @environment
     end
 
     def prune_bundler?
       @options[:prune_bundler] && clustered? && !@options[:preload_app]
     end
 
-    def close_binder_listeners
-      @binder.listeners.each do |l, io|
-        io.close
-        uri = URI.parse(l)
-        next unless uri.scheme == 'unix'
-        File.unlink("#{uri.host}#{uri.path}")
-      end
-    end
-
-
     def generate_restart_data
       if dir = @options[:directory]
         @restart_dir = dir
 
       elsif Puma.windows?
@@ -395,24 +471,18 @@
 
       begin
         Signal.trap "SIGTERM" do
           graceful_stop
 
-          raise SignalException, "SIGTERM"
+          raise(SignalException, "SIGTERM") if @options[:raise_exception_on_sigterm]
         end
       rescue Exception
         log "*** SIGTERM not implemented, signal based gracefully stopping unavailable!"
       end
 
       begin
         Signal.trap "SIGINT" do
-          if Puma.jruby?
-            @status = :exit
-            graceful_stop
-            exit
-          end
-
           stop
         end
       rescue Exception
         log "*** SIGINT not implemented, signal based gracefully stopping unavailable!"
       end
@@ -426,8 +496,48 @@
           end
         end
       rescue Exception
         log "*** SIGHUP not implemented, signal based logs reopening unavailable!"
       end
+
+      begin
+        unless Puma.jruby? # INFO in use by JVM already
+          Signal.trap "SIGINFO" do
+            thread_status do |name, backtrace|
+              @events.log name
+              @events.log backtrace.map { |bt| "  #{bt}" }
+            end
+          end
+        end
+      rescue Exception
+        # Not going to log this one, as SIGINFO is *BSD only and would be pretty annoying
+        # to see this constantly on Linux.
+      end
+    end
+
+    def require_rubygems_min_version!(min_version, feature)
+      return if min_version <= Gem::Version.new(Gem::VERSION)
+
+      raise "#{feature} is not supported on your version of RubyGems. " \
+              "You must have RubyGems #{min_version}+ to use this feature."
+    end
+
+    # @version 5.0.0
+    def with_unbundled_env
+      bundler_ver = Gem::Version.new(Bundler::VERSION)
+      if bundler_ver < Gem::Version.new('2.1.0')
+        Bundler.with_clean_env { yield }
+      else
+        Bundler.with_unbundled_env { yield }
+      end
+    end
+
+    def log_config
+      log "Configuration:"
+
+      @config.final_options
+        .each { |config_key, value| log "- #{config_key}: #{value}" }
+
+      log "\n"
     end
   end
 end