NodeJS Librato Logger

gistfile1.js

exports.log = function(type, name, val, data) {
  data = data || {};
  data[type+"#"+prefixName(name)] = val;
  process.stdout.write(this.stringify(data)+"\n");
}

exports.sample = function(name, val, data) {
  this.log("sample", name, val, data);
}

exports.count = function(name, val, data) {
  this.log("count", name, val, data);
}

exports.measureVal = function(name, val, data) {
  this.log("measure", name, val, data);
}

exports.measure = function(name, cb, data) {
  data = data || {};
  var start_time = new Date();
  var _this = this;
  return function() {
    var dif = (new Date()) - start_time;
    _this.measureVal(name, dif, data);
    if(cb) return cb.apply(this, arguments);
  };
}

exports.stringify = function(data) {
  var str = "";
  for(var k in data) {
    str += k + "=" + data[k] + " ";
  }
  return str;
}

function prefixName(name) {
  return "cp.node."+name;
}