Async.waterfall，foreach和解析JSON node.js.需要一些建議

我的任務是解析最後100個dota2遊戲。我使用jotain的dota 2 API和小型庫（https://github.com/jiin/dota2api）Async.waterfall，foreach和解析JSON node.js.需要一些建議

我所有的，它是一個async.waterfall調用。像這樣：

exports.get = function(req, res, next) { 
var playerID = +req.params.id; 
var playerCounter = []; 
var playerInfo = { 
    kills: [], 
    deaths: [], 
    assists: [], 
    last_hits: [], 
    denies: [], 
    hero_damage: [], 
    hero_healing: [], 
    gold_spent: [], 
    kills_number: 0, 
    deaths_number: 0, 
    assists_number: 0 
}; 

async.waterfall([ 

    function getDota2Json(callback) { 
     dota.getByAccountID(playerID, function (err, result) { 
      callback(err, result); 
     }); 
    }, 
    function getMatches(result, callback) { 
     result.matches.forEach(function (match) { 
      callback(null, match.match_id); 
     }); 
    }, 
    function getMatchInfo(matchID, callback) { 
     dota.getMatchDetails(matchID, function (err, result) { 
      callback(err, result.players); 
     }); 
    }, 
    function getCurrentPlayer(players, callback) { 
     players.forEach(function (player) { 
      if (player.account_id === playerID) { 
       callback(null, player); 
      } 
     }); 
    }, 
    function getDamage(player, callback) { 
     callback(null, 
       player.kills, 
       player.deaths, 
       player.assists, 
       player.last_hits, 
       player.denies, 
       player.hero_damage, 
       player.hero_healing, 
       player.gold_spent, 
       '1'); 
    } 
], function (err, kills, deaths, assists, last_hits, denies, hero_damage, hero_healing, gold_spent, counter) { 
    playerCounter.push(counter); 

    playerInfo.kills.push(kills); 
    playerInfo.deaths.push(deaths); 
    playerInfo.assists.push(assists); 

    console.log(playerCounter.length); 

    if (playerCounter.length === 100) { 

     playerInfo.kills.forEach(function (val) { 
      playerInfo.kills_number += val; 
     }); 
     console.log('Last 100 K ' + playerInfo.kills_number); 

     playerInfo.deaths.forEach(function (val) { 
      playerInfo.deaths_number += val; 
     }); 
     console.log('Last 100 D ' + playerInfo.deaths_number); 

     playerInfo.assists.forEach(function (val) { 
      playerInfo.assists_number += val; 
     }); 
     console.log('Last 100 A ' + playerInfo.assists_number); 


     var magickOpts = [ 
      "-background", "grey60", 
      "-bordercolor", "snow", 
      "-border", "6", 
      "-fill", "black", 
      "-pointsize", "50", 
      "label: Dota 2 LAST 100 \n K - D - A " + playerInfo.kills_number + ' - ' + playerInfo.deaths_number + ' - ' + playerInfo.assists_number, 
      ""+playerID+".png" 
     ]; 
     var im = spawn('convert', magickOpts); 
    } 
}); 

res.end('rdy');

};

我認爲這不是好的代碼，但我找不到替代方案。 Dota API讓我在JSON中玩了100場比賽，但我需要爲game_id「forEach」獲取詳細信息，並且需要爲player_id添加「forEach」，以獲取request.params.id中當前玩家的詳細信息。畢竟，我再次使用forEach來獲取摘要數據。這是正確的方式？）或者我真的愚蠢？）

可能你有一些想法來做到這一點更快？可能需要使用MongoDB（？）或其他的東西。

最後，我用統計生成簡單的圖像。

謝謝！

來源

2013-11-02 Max P

我覺得你可能能夠使用async.each來簡化你的一些forEach通話...

這可能是一個小雞蛋裏挑骨頭，但得到的數字數組的總和，你可以使用reduce方法數組。

playerInfo.kills_number = playerInfo.kills.reduce(function(a, b) { 
    return a + b; 
});

來源

2013-11-02 13:32:52 Bulkan

Async.waterfall，foreach和解析JSON node.js.需要一些建議

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