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* [shogi-server]
[shogi-server/shogi-server.git] / shogi_server / league / floodgate_thread.rb
1 require 'shogi_server'
2 require 'shogi_server/league/floodgate'
3
4 module ShogiServer
5
6   class SetupFloodgate
7     # Constructor.
8     # @param game_names an array of game name strings
9     #
10     def initialize(game_names)
11       @game_names = game_names
12       @thread = nil
13     end
14
15     # Return the most recent Floodgate instance
16     #
17     def next_league(leagues)
18       floodgate = leagues.min {|a,b| a.next_time <=> b.next_time}
19       return floodgate
20     end
21
22     def floodgate_reload_log(leagues)
23       floodgate = next_league(leagues)
24       diff = floodgate.next_time - Time.now
25       log_message("Floodgate reloaded. The next match will start at %s in %d seconds" % 
26                   [floodgate.next_time, diff])
27     end
28
29     def mk_leagues
30       leagues = @game_names.collect do |game_name|
31         ShogiServer::League::Floodgate.new($league, 
32                                            {:game_name => game_name})
33       end
34       leagues.delete_if do |floodgate|
35         ret = false
36         unless floodgate.next_time 
37           log_error("Unsupported game name: %s" % floodgate.game_name)
38           ret = true
39         end
40         ret
41       end
42       if leagues.empty?
43         log_error("No valid Floodgate game names found")
44         return [] # will exit the thread
45       end
46       floodgate_reload_log(leagues)
47       return leagues
48     end
49
50     def wait_next_floodgate(floodgate)
51       diff = floodgate.next_time - Time.now
52       if diff > 0
53         sleep(diff/2)
54         return true
55       end
56       return false
57     end
58
59     def reload_shogi_server
60       $mutex.synchronize do
61         log_message("Reloading source...")
62         ShogiServer.reload
63       end
64     end
65
66     def start_games(floodgate)
67       log_message("Starting Floodgate games...: %s" % [floodgate.game_name])
68       $league.reload
69       floodgate.match_game
70     end
71
72     # Regenerate floodgate instances from next_array for the next matches.
73     # @param next_array array of [game_name, next_time]
74     #
75     def regenerate_leagues(next_array)
76       leagues = next_array.collect do |game_name, next_time|
77         floodgate = ShogiServer::League::Floodgate.new($league, 
78                                                        {:game_name => game_name,
79                                                         :next_time => next_time})
80       end
81       floodgate_reload_log(leagues)
82       return leagues
83     end
84
85     def start
86       return nil if @game_names.nil? || @game_names.empty?
87
88       log_message("Set up floodgate games: %s" % [@game_names.join(",")])
89       @thread = Thread.start(@game_names) do |game_names|
90         Thread.pass
91         leagues = mk_leagues
92         if leagues.nil? || leagues.empty?
93           return # exit from this thread
94         end
95
96         while (true)
97           begin
98             floodgate = next_league(leagues)
99             next if wait_next_floodgate(floodgate)
100
101             next_array = leagues.collect do |floodgate|
102               if (floodgate.next_time - Time.now) > 0
103                 [floodgate.game_name, floodgate.next_time]
104               else
105                 start_games(floodgate)
106                 floodgate.charge # updates next_time
107                 [floodgate.game_name, floodgate.next_time] 
108               end
109             end
110
111             reload_shogi_server
112
113             # Regenerate floodgate instances after ShogiServer.realod
114             leagues = regenerate_leagues(next_array)
115           rescue Exception => ex 
116             # ignore errors
117             log_error("[in Floodgate's thread] #{ex} #{ex.backtrace}")
118           end
119         end # infinite loop
120
121         return @thread
122       end # Thread
123
124     end # def start
125
126     def kill
127       @thread.kill if @thread
128     end
129
130   end # class SetupFloodgate
131
132 end # module ShogiServer