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- shogi_server/command.rb: Fixed an issue that MONITOR2OFF did not
[shogi-server/shogi-server.git] / shogi-server
index ebca314..7f6d068 100755 (executable)
@@ -1,30 +1,52 @@
 #! /usr/bin/env ruby
-## $Id$
-
-## Copyright (C) 2004 NABEYA Kenichi (aka nanami@2ch)
-## Copyright (C) 2007-2008 Daigo Moriwaki (daigo at debian dot org)
-##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; either version 2 of the License, or
-## (at your option) any later version.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
-## You should have received a copy of the GNU General Public License
-## along with this program; if not, write to the Free Software
-## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+# $Id$
+#
+# Author:: NABEYA Kenichi, Daigo Moriwaki
+# Homepage:: http://sourceforge.jp/projects/shogi-server/
+#
+#--
+# Copyright (C) 2004 NABEYA Kenichi (aka nanami@2ch)
+# Copyright (C) 2007-2008 Daigo Moriwaki (daigo at debian dot org)
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#++
+#
+#
 
+$topdir = nil
+$league = nil
+$logger = nil
+$config = nil
 $:.unshift File.dirname(__FILE__)
 require 'shogi_server'
+require 'shogi_server/config'
+require 'shogi_server/util'
+require 'tempfile'
 
 #################################################
 # MAIN
 #
 
+ShogiServer.reload
+
+# Return
+#   - a received string
+#   - :timeout
+#   - :exception
+#   - nil when a socket is closed
+#
 def gets_safe(socket, timeout=nil)
   if r = select([socket], nil, nil, timeout)
     return r[0].first.gets
@@ -32,7 +54,7 @@ def gets_safe(socket, timeout=nil)
     return :timeout
   end
 rescue Exception => ex
-  log_error("#{ex.class}: #{ex.message}\n\t#{ex.backtrace[0]}")
+  log_error("gets_safe: #{ex.class}: #{ex.message}\n\t#{ex.backtrace[0]}")
   return :exception
 end
 
@@ -66,6 +88,7 @@ RELEASE
 
 REVISION
        #{ShogiServer::Revision}
+
 EOM
 end
 
@@ -77,6 +100,9 @@ end
 def log_message(str)
   $logger.info(str)
 end
+def log_info(str)
+  log_message(str)
+end
 
 def log_warning(str)
   $logger.warn(str)
@@ -87,12 +113,16 @@ def log_error(str)
 end
 
 
+# Parse command line options. Return a hash containing the option strings
+# where a key is the option name without the first two slashes. For example,
+# {"pid-file" => "foo.pid"}.
+#
 def parse_command_line
   options = Hash::new
   parser = GetoptLong.new(
-    ["--daemon",   GetoptLong::REQUIRED_ARGUMENT],
-    ["--pid-file", GetoptLong::REQUIRED_ARGUMENT],
-    ["--player-log-dir", GetoptLong::REQUIRED_ARGUMENT])
+    ["--daemon",            GetoptLong::REQUIRED_ARGUMENT],
+    ["--pid-file",          GetoptLong::REQUIRED_ARGUMENT],
+    ["--player-log-dir",    GetoptLong::REQUIRED_ARGUMENT])
   parser.quiet = true
   begin
     parser.each_option do |name, arg|
@@ -106,6 +136,70 @@ def parse_command_line
   return options
 end
 
+# Check command line options.
+# If any of them is invalid, exit the process.
+#
+def check_command_line
+  if (ARGV.length != 2)
+    usage
+    exit 2
+  end
+
+  if $options["daemon"]
+    $options["daemon"] = File.expand_path($options["daemon"], File.dirname(__FILE__))
+    unless is_writable_dir? $options["daemon"]
+      usage
+      $stderr.puts "Can not create a file in the daemon directory: %s" % [$options["daemon"]]
+      exit 5
+    end
+  end
+
+  $topdir = $options["daemon"] || File.expand_path(File.dirname(__FILE__))
+
+  if $options["player-log-dir"]
+    $options["player-log-dir"] = File.expand_path($options["player-log-dir"], $topdir)
+    unless is_writable_dir?($options["player-log-dir"])
+      usage
+      $stderr.puts "Can not write a file in the player log dir: %s" % [$options["player-log-dir"]]
+      exit 3
+    end 
+  end
+
+  if $options["pid-file"] 
+    $options["pid-file"] = File.expand_path($options["pid-file"], $topdir)
+    unless ShogiServer::is_writable_file? $options["pid-file"]
+      usage
+      $stderr.puts "Can not create the pid file: %s" % [$options["pid-file"]]
+      exit 4
+    end
+  end
+
+  if $options["floodgate-history"]
+    $stderr.puts "WARNING: --floodgate-history has been deprecated."
+    $options["floodgate-history"] = nil
+  end
+end
+
+# See if a file can be created in the directory.
+# Return true if a file is writable in the directory, otherwise false.
+#
+def is_writable_dir?(dir)
+  unless File.directory? dir
+    return false
+  end
+
+  result = true
+
+  begin
+    temp_file = Tempfile.new("dummy-shogi-server", dir)
+    temp_file.close true
+  rescue
+    result = false
+  end
+
+  return result
+end
+
 def write_pid_file(file)
   open(file, "w") do |fh|
     fh.puts "#{$$}"
@@ -113,20 +207,21 @@ def write_pid_file(file)
 end
 
 def mutex_watchdog(mutex, sec)
+  sec = 1 if sec < 1
+  queue = []
   while true
-    begin
-      timeout(sec) do
-        begin
-          mutex.lock
-        ensure
-          mutex.unlock
-        end
+    if mutex.try_lock
+      queue.clear
+      mutex.unlock
+    else
+      queue.push(Object.new)
+      if queue.size > sec
+        # timeout
+        log_error("mutex watchdog timeout: %d sec" % [sec])
+        queue.clear
       end
-      sleep(sec)
-    rescue TimeoutError
-      log_error("mutex watchdog timeout")
-      exit(1)
     end
+    sleep(1)
   end
 end
 
@@ -134,15 +229,22 @@ def login_loop(client)
   player = login = nil
  
   while r = select([client], nil, nil, ShogiServer::Login_Time) do
-    break unless str = r[0].first.gets
-    $mutex.lock # guards LEAGUE
+    str = nil
+    begin
+      break unless str = r[0].first.gets
+    rescue Exception => ex
+      # It is posssible that the socket causes an error (ex. Errno::ECONNRESET)
+      log_error("login_loop: #{ex.class}: #{ex.message}\n\t#{ex.backtrace[0]}")
+      break
+    end
+    $mutex.lock # guards $league
     begin
       str =~ /([\r\n]*)$/
       eol = $1
       if (ShogiServer::Login::good_login?(str))
         player = ShogiServer::Player::new(str, client, eol)
         login  = ShogiServer::Login::factory(str, player)
-        if (current_player = LEAGUE.find(player.name))
+        if (current_player = $league.find(player.name))
           if (current_player.password == player.password &&
               current_player.status != "game")
             log_message(sprintf("user %s login forcely", player.name))
@@ -153,7 +255,7 @@ def login_loop(client)
             break
           end
         end
-        LEAGUE.add(player)
+        $league.add(player)
         break
       else
         client.write("LOGIN:incorrect" + eol)
@@ -167,7 +269,7 @@ def login_loop(client)
 end
 
 def setup_logger(log_file)
-  logger = Logger.new(log_file, 'daily')
+  logger = ShogiServer::Logger.new(log_file, 'daily')
   logger.formatter = ShogiServer::Formatter.new
   logger.level = $DEBUG ? Logger::DEBUG : Logger::INFO  
   logger.datetime_format = "%Y-%m-%d %H:%M:%S"
@@ -182,64 +284,124 @@ def setup_watchdog_for_giant_lock
   end
 end
 
-def main
+def floodgate_reload_log(leagues)
+  floodgate = leagues.min {|a,b| a.next_time <=> b.next_time}
+  diff = floodgate.next_time - Time.now
+  log_message("Floodgate reloaded. The next match will start at %s in %d seconds" % 
+              [floodgate.next_time, diff])
+end
 
-  setup_watchdog_for_giant_lock
+def setup_floodgate(game_names)
+  return Thread.start(game_names) do |game_names|
+    Thread.pass
+    leagues = game_names.collect do |game_name|
+      ShogiServer::League::Floodgate.new($league, 
+                                         {:game_name => game_name})
+    end
+    leagues.delete_if do |floodgate|
+      ret = false
+      unless floodgate.next_time 
+        log_error("Unsupported game name: %s" % floodgate.game_name)
+        ret = true
+      end
+      ret
+    end
+    if leagues.empty?
+      log_error("No valid Floodgate game names found")
+      return # exit from this thread
+    end
+    floodgate_reload_log(leagues)
 
-  $options = parse_command_line
-  if (ARGV.length != 2)
-    usage
-    exit 2
-  end
-  if $options["player-log-dir"]
-    $options["player-log-dir"] = File.expand_path($options["player-log-dir"])
-  end
-  if $options["player-log-dir"] && 
-     !File.directory?($options["player-log-dir"])
-    usage
-    exit 3
+    while (true)
+      begin
+        floodgate = leagues.min {|a,b| a.next_time <=> b.next_time}
+        diff = floodgate.next_time - Time.now
+        if diff > 0
+          floodgate_reload_log(leagues) if $DEBUG
+          sleep(diff/2)
+          next
+        end
+        next_array = leagues.collect do |floodgate|
+          if (floodgate.next_time - Time.now) > 0
+            [floodgate.game_name, floodgate.next_time]
+          else
+            log_message("Starting Floodgate games...: %s" % [floodgate.game_name])
+            $league.reload
+            floodgate.match_game
+            floodgate.charge
+            [floodgate.game_name, floodgate.next_time] # next_time has been updated
+          end
+        end
+        $mutex.synchronize do
+          log_message("Reloading source...")
+          ShogiServer.reload
+        end
+        # Regenerate floodgate instances after ShogiServer.realod
+        leagues = next_array.collect do |game_name, next_time|
+          floodgate = ShogiServer::League::Floodgate.new($league, 
+                                                         {:game_name => game_name,
+                                                          :next_time => next_time})
+        end
+        floodgate_reload_log(leagues)
+      rescue Exception => ex 
+        # ignore errors
+        log_error("[in Floodgate's thread] #{ex} #{ex.backtrace}")
+      end
+    end
   end
+end
 
-  LEAGUE.event = ARGV.shift
-  port = ARGV.shift
+def main
+  
+  $options = parse_command_line
+  check_command_line
+  $config = ShogiServer::Config.new $options
 
-  dir = $options["daemon"]
-  dir = File.expand_path(dir) if dir
-  if dir && ! File.exist?(dir)
-    FileUtils.mkdir(dir)
-  end
+  $league = ShogiServer::League.new($topdir)
 
-  log_file = dir ? File.join(dir, "shogi-server.log") : STDOUT
+  $league.event = ARGV.shift
+  port = ARGV.shift
+
+  log_file = $options["daemon"] ? File.join($options["daemon"], "shogi-server.log") : STDOUT
   $logger = setup_logger(log_file)
 
-  LEAGUE.dir = dir || File.dirname(__FILE__)
-  LEAGUE.setup_players_database
+  $league.dir = $topdir
 
   config = {}
   config[:Port]       = port
   config[:ServerType] = WEBrick::Daemon if $options["daemon"]
   config[:Logger]     = $logger
-  if $options["pid-file"]
-    pid_file = File.expand_path($options["pid-file"])
-    config[:StartCallback] = Proc.new do
-      write_pid_file(pid_file)
+
+  fg_thread = nil
+
+  config[:StartCallback] = Proc.new do
+    srand
+    if $options["pid-file"]
+      write_pid_file($options["pid-file"])
     end
-    config[:StopCallback] = Proc.new do
-      FileUtils.rm(pid_file, :force => true)
+    setup_watchdog_for_giant_lock
+    $league.setup_players_database
+    fg_thread = setup_floodgate(["floodgate-900-0", "floodgate-3600-0"])
+  end
+
+  config[:StopCallback] = Proc.new do
+    if $options["pid-file"]
+      FileUtils.rm($options["pid-file"], :force => true)
     end
   end
 
+  srand
   server = WEBrick::GenericServer.new(config)
   ["INT", "TERM"].each do |signal| 
     trap(signal) do
-      LEAGUE.shutdown
       server.shutdown
+      fg_thread.kill if fg_thread
     end
   end
-  trap("HUP") do
-    LEAGUE.shutdown
-    Dependencies.clear
-    LEAGUE.restart
+  unless (RUBY_PLATFORM.downcase =~ /mswin|mingw|cygwin|bccwin/)
+    trap("HUP") do
+      Dependencies.clear
+    end
   end
   $stderr.puts("server started as a deamon [Revision: #{ShogiServer::Revision}]") if $options["daemon"] 
   log_message("server started [Revision: #{ShogiServer::Revision}]")
@@ -261,7 +423,7 @@ def main
           player.game.kill(player)
         end
         player.finish # socket has been closed
-        LEAGUE.delete(player)
+        $league.delete(player)
         log_message(sprintf("user %s logout", player.name))
       ensure
         $mutex.unlock
@@ -276,6 +438,13 @@ if ($0 == __FILE__)
   TCPSocket.do_not_reverse_lookup = true
   Thread.abort_on_exception = $DEBUG ? true : false
 
-  LEAGUE = ShogiServer::League::new
-  main
+  begin
+    main
+  rescue Exception => ex
+    if $logger
+      log_error("main: #{ex.class}: #{ex.message}\n\t#{ex.backtrace[0]}")
+    else
+      $stderr.puts "main: #{ex.class}: #{ex.message}\n\t#{ex.backtrace[0]}"
+    end
+  end
 end