夢野久作の ”瓶詰地獄” がサーバレスアーキテクチャの Azure Functions で送出されて3つの瓶が流れ着く LINEBOT ref: http://qiita.com/n_ueh/items/3ddccd0a08b3d7fec430

HTTPTrigger

module.exports = function (context, req) {
  context.log('JavaScript HTTP trigger function processed a request. RequestUri=%s', req.originalUrl);
  context.log(req);
  context.bindings.outputQueueItem = req.body;
  res = { body : "" };
  context.done();
};

QueueStoragetrigger

var https = require("https");
var url = require("url");

// 送出
function send_line(postData, context, mtd){
    var parse_url = url.parse('https://api.line.me/v2/bot/message/'+ mtd);
    var options = {
    host: parse_url.host,
    path: parse_url.path,
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': 'Bearer {（キー）}'
    }
    };
    var req = https.request(options, function(res) {
    context.log('-- send_line : STATUS: ' + res.statusCode);
    context.log('-- send_line : HEADERS: ' + JSON.stringify(res.headers));
    res.setEncoding('utf8');
    res.on('data', function (chunk) {
        context.log('-- send_line : BODY: ' + chunk);
    });
    });
    req.on('error', function(e) {
        context.log('-- send_line : problem with request: ' + e.message);
    });
    req.write(postData);
    req.end();
}

// 手紙シャッフル
function shuffle(array) {
  var n = array.length, t, i;
  while (n) {
    i = Math.floor(Math.random() * n--);
    t = array[n];
    array[n] = array[i];
    array[i] = t;
  }
  return array;
}

// 瓶詰
function push_bottles(context, event) {

    shuffled_lettersNum = shuffle(["1", "2", "3"]);

    var postData = JSON.stringify(
        {'to' : event.source.userId, 
        'messages' : [
            {
            "type": "template",
            "altText": "『瓶画像と本文へのリンク』です。",
            "template": {
                "type": "carousel",
                "columns": [
                    {
                        "thumbnailImageUrl": "https://（アカウント）.blob.core.windows.net/bins/btl_typeB.png",
                        "text": "よほど以前に漂着致したる封瓶",
                        "actions": [
                            {
                                "type": "uri",
                                "label": "瓶を開ける",
                                "uri": "https://（アカウント）.blob.core.windows.net/bins/" + shuffled_lettersNum[0] + ".jpg"
                            }
                        ]
                    },
                     {
                        "thumbnailImageUrl": "https://（アカウント）.blob.core.windows.net/bins/btl_typeA.png",
                        "text": "よほど以前に漂着致したる封瓶",
                        "actions": [
                            {
                                "type": "uri",
                                "label": "瓶を開ける",
                                "uri": "https://（アカウント）.blob.core.windows.net/bins/" + shuffled_lettersNum[1] + ".jpg"
                            }
                        ]
                    },
                    {
                        "thumbnailImageUrl": "https://（アカウント）.blob.core.windows.net/bins/btl_typeB.png",
                        "text": "よほど以前に漂着致したる封瓶",
                        "actions": [
                            {
                                "type": "uri",
                                "label": "瓶を開ける",
                                "uri": "https://（アカウント）.blob.core.windows.net/bins/" + shuffled_lettersNum[2] + ".jpg"
                            }
                        ]
                    }                    
                ]
            }
            }
            ]}
        );
    send_line(postData, context, "push");
}; 

// 浜辺
function reply_beach(context, event) {
    var postData = JSON.stringify({
    'replyToken' : event.replyToken,
    'messages' : [
        {
            "type": "image",
            "originalContentUrl": "https://（アカウント）.blob.core.windows.net/bins/beach.jpg",
            "previewImageUrl": "https://（アカウント）.blob.core.windows.net/bins/beach.jpg"
        }
    ]
    });
    send_line(postData, context, "reply");
};

function post_message(context, event) {
  if (event.type == 'message'){
    var messageType = event.message.type;
    if (messageType == 'text') {
        reply_beach(context, event);   
        push_bottles(context, event);
    } else           
        reply_beach(context, event);
    };
}

module.exports = function (context, myQueueItem) {
  context.log('------------ JavaScript queue trigger function', myQueueItem);
  myQueueItem.events.forEach(event => post_message(context, event));
  context.done();
};