serf-rpc/lib/msgpack.js

A simple nodejs module for interacting with the Serf RPC protocol.

var _ = require("lodash");
var msgpack = require("msgpack-js-v5-ng");

exports.decode = function(data){
    var values = [];
    var cache = new Buffer(0);
    var head, trailing, value, decoded;
    while(data.length > 0) {
        head = data.slice(0, 1);
        data = data.slice(1, data.length);
        cache = Buffer.concat([cache, head]);

        try{
            decoded = msgpack.decode(cache);
        } catch(err){}

        if(decoded.trailing == 0){
            values.push(decoded.value);
            cache = new Buffer(0);
        }
    }

    var response = {};
    var seq_id;
    _.each(values, function(value){
        if(_.has(value, "Seq"))
            seq_id = value.Seq;

        if(!_.has(response, seq_id))
            response[seq_id] = [];

        response[seq_id].push(value);
    });

    return response;
}

exports.encode = function(data){
    return msgpack.encode(data);
}