Add reload_worker_directory

lib/puma/app/status.rb

@@ -48,6 +48,13 @@ module Puma
             return rack_response(200, OK_STATUS)
           end
 
+        when /\/reload-worker-directory$/
+          if !@cli.reload_worker_directory
+            return rack_response(404, '{ "error": "reload_worker_directory not available" }')
+          else
+            return rack_response(200, OK_STATUS)
+          end
+
         when /\/stats$/
           return rack_response(200, @cli.stats)
         else

lib/puma/cli.rb

@@ -522,6 +522,10 @@ module Puma
       @runner.restart
     end
 
+    def reload_worker_directory
+      @runner.reload_worker_directory if @runner.respond_to?(:reload_worker_directory)
+    end
+
     def phased_restart
       unless @runner.respond_to?(:phased_restart) and @runner.phased_restart
         log "* phased-restart called but not available, restarting normally."

lib/puma/cluster.rb

@@ -98,9 +98,9 @@ module Puma
     end
 
     def next_worker_index
-      all_positions =  0...@options[:workers] 
+      all_positions =  0...@options[:workers]
       occupied_positions = @workers.map { |w| w.index }
-      available_positions = all_positions.to_a - occupied_positions 
+      available_positions = all_positions.to_a - occupied_positions
       available_positions.first
     end
 
@@ -248,6 +248,13 @@ module Puma
       wakeup!
     end
 
+    def reload_worker_directory
+      if dir = @options[:worker_directory]
+        log "+ Changing to #{dir}"
+        Dir.chdir dir
+      end
+    end
+
     def stats
       %Q!{ "workers": #{@workers.size}, "phase": #{@phase}, "booted_workers": #{@workers.count{|w| w.booted?}} }!
     end

lib/puma/control_cli.rb

@@ -7,7 +7,7 @@ require 'socket'
 module Puma
   class ControlCLI
 
-    COMMANDS = %w{halt restart phased-restart start stats status stop}
+    COMMANDS = %w{halt restart phased-restart start stats status stop reload-worker-directory}
 
     def is_windows?
       RUBY_PLATFORM =~ /(win|w)32$/ ? true : false
@@ -201,6 +201,10 @@ module Puma
         puts "Stats not available via pid only"
         return
 
+      when "reload-worker-directory"
+        puts "reload-worker-directory not available via pid only"
+        return
+
       when "phased-restart"
         Process.kill "SIGUSR1", pid