InstagramのtagAPIを使ってJSONを返すnode.js版プロキシー

instagram_tag.js

var url  = require('url'),
    https = require('https'),
    http = require('http'),
    express = require('express');

var recent = '';

var app = express.createServer();
app.set('view options', { layout: false });
app.get('/instagram_tag', function(req, res){
	var code = req.query.code;
	if (code) {
		return;
	}

	var access_token = 'XXXXXXXXXXXXXXXXXXXXXXXXX';
    var u = url.parse('https://api.instagram.com/v1/tags/' + req.query.tag + '/media/recent');
    var param = "?access_token=" + access_token;
    var head = true;

    https.get({
            host: u.hostname,
            port: u.port,
            path: u.pathname + param,
            method: 'POST'
    }, function(data) {
            var body = '';

            data.on('data', function(chunk) {
                    if(head){
                            res.writeHead(200, {'Content-Type': 'text/plain'});
                            head = false;
                    }
                    body += chunk.toString();
            });

            data.on('end', function() {
                    recent = JSON.parse(body);
                    res.write(JSON.stringify(recent));
                    res.end();
            });
    }).on('error', function(e) {
            res.writeHead(200, {'Content-Type': 'text/plain'});
            res.write(e);
            res.end();
    });
});
app.listen(8126);

var Log = require('log'),
        fs = require('fs'),
        stream = fs.createWriteStream(__dirname + '/instagram_tag.log'),
        log = new Log(Log.INFO, stream);

// catchされなかった例外の処理設定
process.on('uncaughtException', function (err) {
        log.info('$: uncaughtException => ' + err);
});