Example #1
0
        public ShardsCoordinator()
        {
            //load main stuff
            LogSetup.SetupLogger(-1);
            _log   = LogManager.GetCurrentClassLogger();
            _creds = new BotCredentials();

            _log.Info("Starting Kotocorn v" + StatsService.BotVersion);

            _key   = _creds.RedisKey();
            _redis = ConnectionMultiplexer.Connect("127.0.0.1");

            new RedisImagesCache(_redis, _creds).Reload().GetAwaiter().GetResult(); //reload images into redis

            //setup initial shard statuses
            _defaultShardState = new ShardComMessage()
            {
                ConnectionState = Discord.ConnectionState.Disconnected,
                Guilds          = 0,
                Time            = DateTime.UtcNow
            };
            var db = _redis.GetDatabase();

            //clear previous statuses
            db.KeyDelete(_key + "_shardstats");

            _shardProcesses = new Process[_creds.TotalShards];
            for (int i = 0; i < _creds.TotalShards; i++)
            {
                //add it to the list of shards which should be started
#if DEBUG
                if (i > 0)
                {
                    _shardStartQueue.Enqueue(i);
                }
                else
                {
                    _shardProcesses[i] = Process.GetCurrentProcess();
                }
#else
                _shardStartQueue.Enqueue(i);
#endif
                //set the shard's initial state in redis cache
                var msg = _defaultShardState.Clone();
                msg.ShardId = i;
                //this is to avoid the shard coordinator thinking that
                //the shard is unresponsive while starting up
                var delay = 45;
#if GLOBAL_Kotocorn
                delay = 180;
#endif
                msg.Time = DateTime.UtcNow + TimeSpan.FromSeconds(delay * (i + 1));
                db.ListRightPush(_key + "_shardstats",
                                 JsonConvert.SerializeObject(msg),
                                 flags: CommandFlags.FireAndForget);
            }

            _curProcessId = Process.GetCurrentProcess().Id;

            //subscribe to shardcoord events
            var sub = _redis.GetSubscriber();

            //send is called when shard status is updated. Every 7.5 seconds atm
            sub.Subscribe(_key + "_shardcoord_send",
                          OnDataReceived,
                          CommandFlags.FireAndForget);

            //called to stop the shard, although the shard will start again when it finds out it's dead
            sub.Subscribe(_key + "_shardcoord_stop",
                          OnStop,
                          CommandFlags.FireAndForget);

            //called kill the bot
            sub.Subscribe(_key + "_die",
                          (ch, x) => Environment.Exit(0),
                          CommandFlags.FireAndForget);
        }