yog-ral/lib/ext/converter/mcgiConverter.js

node-ral with mcpack and nshead

/*
 * fis
 * http://fis.baidu.com/
 * 2014/8/14
 */

'use strict';

var Converter = require('node-ral').Converter;
var logger = require('node-ral').Logger('McgiConverter');
var util = require('util');
var mcpack;
var iconv = require('iconv-lite');

try {
    mcpack = require('@baidu/mcpack');
}
catch (e) {
    logger.warning('mcpack module load failed');
}

function McgiConverter() {
    Converter.call(this);
}

util.inherits(McgiConverter, Converter);

McgiConverter.prototype.unpack = function (config, data) {
    try {
        if (!mcpack) {
            throw new Error('mcpack is not ready');
        }
        if (!data) {
            throw new Error('invalid data data=' + data);
        }
        var obj = mcpack.decode(data, {
            encoding: config.encoding
        });
        if (!obj['Content-Length']) {
            throw new Error('mcgi protocol is not supported, missing Content-Length');
        }
        var extraData = data.slice(data.length - parseInt(obj['Content-Length'], 10));
        logger.trace('unpack mcgi header data succ ServiceID=' + config.serviceID);
        extraData.meta = obj;
        return extraData;
    }
    catch (ex) {
        logger.notice('unpack mcgi header data failed ServiceID=' + config.serviceID);
        throw ex;
    }
};

McgiConverter.prototype.pack = function (config, data) {
    throw new Error('mcgi pack is not implemented');
};

McgiConverter.prototype.getName = function () {
    return 'mcgi';
};

module.exports = McgiConverter;