librato-node/lib/librato.js

A node.js client for Librato Metrics (http://metrics.librato.com/)

// Generated by CoffeeScript 1.12.7
(function() {
  var Client, Collector, EventEmitter, Worker, client, collector, config, format_key, librato, middleware, ref, sanitize_name, worker;

  EventEmitter = require('events').EventEmitter;

  Client = require('./client');

  Worker = require('./worker');

  Collector = require('./collector');

  middleware = require('./middleware');

  ref = {}, collector = ref.collector, client = ref.client, worker = ref.worker, config = ref.config;

  librato = new EventEmitter();

  librato.configure = function(newConfig) {
    config = newConfig;
    collector = new Collector();
    client = new Client(config);
    return worker = new Worker({
      job: librato.flush,
      period: newConfig.period
    });
  };

  librato.increment = function(name, value, opts) {
    var ref1;
    if (value == null) {
      value = 1;
    }
    if (opts == null) {
      opts = {};
    }
    if (value === Object(value)) {
      opts = value;
      value = 1;
    }
    return collector.increment("" + ((ref1 = config.prefix) != null ? ref1 : '') + (format_key(name, opts.source)), value);
  };

  librato.measure = function(name, value, opts) {
    var ref1;
    if (opts == null) {
      opts = {};
    }
    return collector.measure("" + ((ref1 = config.prefix) != null ? ref1 : '') + (format_key(name, opts.source)), value);
  };

  librato.timing = function(name, fn, opts, cb) {
    var ref1, ref2;
    if (opts == null) {
      opts = {};
    }
    if ((cb == null) && typeof opts === 'function') {
      ref1 = [{}, opts], opts = ref1[0], cb = ref1[1];
    }
    return collector.timing("" + ((ref2 = config.prefix) != null ? ref2 : '') + (format_key(name, opts.source)), fn, cb);
  };

  librato.start = function() {
    return worker.start();
  };

  librato.stop = function(cb) {
    worker.stop();
    return librato.flush(cb);
  };

  librato.flush = function(cb) {
    var counters, gauges, i, j, len, len1, measurement;
    if (cb == null) {
      cb = function() {};
    }
    counters = [];
    gauges = [];
    collector.flushTo(counters, gauges);
    if (config.source != null) {
      for (i = 0, len = counters.length; i < len; i++) {
        measurement = counters[i];
        if (measurement.source == null) {
          measurement.source = config.source;
        }
      }
      for (j = 0, len1 = gauges.length; j < len1; j++) {
        measurement = gauges[j];
        if (measurement.source == null) {
          measurement.source = config.source;
        }
      }
    }
    if (!(counters.length || gauges.length)) {
      return process.nextTick(cb);
    }
    return client.send({
      counters: counters,
      gauges: gauges
    }, function(err) {
      if (err != null) {
        librato.emit('error', err);
      }
      return cb(err);
    });
  };

  librato.middleware = middleware(librato);

  module.exports = librato;

  format_key = function(name, source) {
    if (source != null) {
      return (sanitize_name(name)) + ";" + source;
    } else {
      return sanitize_name(name);
    }
  };

  sanitize_name = function(name) {
    return name.replace(/[^-.:_\w]+/g, '_').substr(0, 255);
  };

}).call(this);

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