coverage/lcov-report/lib/watchmen.js.html from HansHammel/watchmen

coverage/lcov-report/lib/watchmen.js.html
Summary

Maintainability

Test Coverage

Issues
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    <h1>
      <a href="../index.html">all files</a> / <a href="index.html">lib/</a> watchmen.js
    </h1>
    <div class='clearfix'>
      <div class='fl pad1y space-right2'>
        <span class="strong">88.79% </span>
        <span class="quiet">Statements</span>
        <span class='fraction'>103/116</span>
      </div>
      <div class='fl pad1y space-right2'>
        <span class="strong">74.07% </span>
        <span class="quiet">Branches</span>
        <span class='fraction'>40/54</span>
      </div>
      <div class='fl pad1y space-right2'>
        <span class="strong">91.67% </span>
        <span class="quiet">Functions</span>
        <span class='fraction'>22/24</span>
      </div>
      <div class='fl pad1y space-right2'>
        <span class="strong">88.7% </span>
        <span class="quiet">Lines</span>
        <span class='fraction'>102/115</span>
      </div>
    </div>
  </div>
  <div class='status-line high'></div>
<pre><table class="coverage">
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279</td><td class="line-coverage quiet"><span class="cline-any cline-yes">1×</span>
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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">var events = require('events');
var moment = require('moment');
var debug = require('debug')('watchmen');
var util = require('util');
var utils = require('./utils');
&nbsp;
exports = module.exports = WatchMen;
&nbsp;
/**
 * Watchmen service
 * @param services {Array} list of services to ping
 * @param storage {Object} storage instance
 * @constructor
 */
&nbsp;
function WatchMen(services, storage) {
  this.storage = storage;
  this.services = services;
}
&nbsp;
util.inherits(WatchMen, events.EventEmitter);
&nbsp;
/**
 * Ping service
 * @param params.service {Object} service object
 * @param callback {Function} ping result callback
 */
&nbsp;
WatchMen.prototype.ping = function (params, callback) {
&nbsp;
  var self = this;
  var storage = self.storage;
  var service = params.service;
&nbsp;
  debug('pinging ' + service.name);
&nbsp;
  <span class="missing-if-branch" title="if path not taken" >I</span>if (!service.pingService) {
<span class="cstat-no" title="statement not covered" >    var pingFactory = require('watchmen-ping-' + service.pingServiceName);</span>
<span class="cstat-no" title="statement not covered" >    service.pingService = new pingFactory();</span>
  }
&nbsp;
  service.pingService.ping(service, function (error, body, response, elapsedTime) {
&nbsp;
    var timestamp = +new Date();
&nbsp;
    self.emit('ping', service, {elapsedTime: elapsedTime});
&nbsp;
    if (error) {
&nbsp;
      /**
       * Ops, ping failed!
       */
&nbsp;
      debug('error', error);
&nbsp;
      var nPingsToBeConsideredOutage = isNaN(service.failuresToBeOutage) ? 1 : service.failuresToBeOutage;
&nbsp;
      debug('failure threshold', nPingsToBeConsideredOutage);
&nbsp;
      storage.increaseOutageFailureCount(service, function (err, currentFailureCount) {
        <span class="missing-if-branch" title="if path not taken" >I</span>if (err) {
<span class="cstat-no" title="statement not covered" >          return callback(err);</span>
        }
&nbsp;
        debug('currentFailureCount', currentFailureCount);
&nbsp;
        self.emit('service-error', service, {
          error: error,
          currentFailureCount: currentFailureCount
        });
&nbsp;
        storage.getCurrentOutage(service, function (err, outage) {
          <span class="missing-if-branch" title="if path not taken" >I</span>if (err) {
<span class="cstat-no" title="statement not covered" >            return callback(err);</span>
          }
&nbsp;
          if (!outage) {
&nbsp;
            /**
             * First failure
             */
&nbsp;
            if (currentFailureCount &gt;= nPingsToBeConsideredOutage) {
              var outageData = {
                timestamp: timestamp,
                error: error
              };
              storage.startOutage(service, outageData, function (err) {
                <span class="missing-if-branch" title="if path not taken" >I</span>if (err) {
<span class="cstat-no" title="statement not covered" >                  return callback(err);</span>
                }
                self.emit('new-outage', service, outageData);
                callback(null, service.failureInterval);
              });
            } else {
              callback(null, service.failureInterval);
            }
&nbsp;
          } else {
&nbsp;
            /**
             * Not the first ping failure for this outage
             */
&nbsp;
            self.emit('current-outage', service, outage);
            callback(null, service.failureInterval);
          }
        });
&nbsp;
      });
    } else {
&nbsp;
      /**
       * (thumbsup), ping succeed!
       */
&nbsp;
      debug('success');
&nbsp;
      storage.resetOutageFailureCount(service, function (err) {
        <span class="missing-if-branch" title="if path not taken" >I</span>if (err) {
<span class="cstat-no" title="statement not covered" >          return callback(err);</span>
        }
&nbsp;
        var limit = service.warningThreshold;
        if (limit &amp;&amp; (elapsedTime &gt; limit)) { //over the limit. warning!
          self.emit('latency-warning', service, {elapsedTime: elapsedTime});
        }
&nbsp;
        storage.saveLatency(service, timestamp, elapsedTime, function (err) {
          <span class="missing-if-branch" title="if path not taken" >I</span>if (err) {
<span class="cstat-no" title="statement not covered" >            return callback(err);</span>
          }
&nbsp;
          debug('latency was', elapsedTime);
&nbsp;
          storage.archiveCurrentOutageIfExists(service, function (err, currentOutage) {
            <span class="missing-if-branch" title="if path not taken" >I</span>if (err) {
<span class="cstat-no" title="statement not covered" >              return callback(err);</span>
            }
&nbsp;
            if (currentOutage) {
              debug('emit current outage');
              self.emit('service-back', service, currentOutage);
            }
&nbsp;
            self.emit('service-ok', service, {elapsedTime: elapsedTime});
&nbsp;
            callback(null, service.interval);
          });
        });
      });
    }
&nbsp;
  });
};
&nbsp;
WatchMen.prototype._launch = function (service) {
  var self = this;
  this.ping({service: service}, <span class="fstat-no" title="function not covered" >function (err, nextDelay) {</span>
<span class="cstat-no" title="statement not covered" >    if (err) {</span>
<span class="cstat-no" title="statement not covered" >      console.error(err);</span>
    }
<span class="cstat-no" title="statement not covered" >    if (service.running) {</span>
<span class="cstat-no" title="statement not covered" >      service.timeoutId = setTimeout(<span class="fstat-no" title="function not covered" >function () {</span></span>
<span class="cstat-no" title="statement not covered" >        self._launch(service);</span>
      }, nextDelay);
    }
  });
};
&nbsp;
&nbsp;
/**
 * Starts all
 * @param options.randomDelayOnInit max bound for a random delay when starting services, to avoid
 * an initial load peak
 */
&nbsp;
WatchMen.prototype.startAll = function (options) {
  var self = this;
&nbsp;
  var delay = 0;
  options = options || {};
  if (!isNaN(options.randomDelayOnInit)) {
    delay = utils.getRandomInt(0, options.randomDelayOnInit);
    debug('Using a delay of max. ', options.randomDelayOnInit, 'ms. on service initialisation');
  }
&nbsp;
  this.services.forEach(function (service) {
    <span class="missing-if-branch" title="else path not taken" >E</span>if (!service.running) {
      setTimeout(function(){
        self._launch(service);
        service.running = true;
      }, delay);
    }
  });
};
&nbsp;
/**
 * Stops all
 */
&nbsp;
WatchMen.prototype.stopAll = function () {
  var self = this;
  this.services.forEach(function (service) {
    <span class="missing-if-branch" title="else path not taken" >E</span>if (service.running) {
      self.stop(service.id);
    }
  });
};
&nbsp;
/**
 * Starts one service
 */
&nbsp;
WatchMen.prototype.start = function (id) {
  var service = this.getServiceById(id);
  if (!id || !service) {
    throw new Error('invalid service id');
  } else {
    <span class="missing-if-branch" title="else path not taken" >E</span>if (!service.running) {
      service.running = true;
      this._launch(service);
    }
  }
};
&nbsp;
/**
 * Stops one service
 */
&nbsp;
WatchMen.prototype.stop = function (id) {
  var service = this.getServiceById(id);
  if (!id || !service) {
    throw new Error('invalid service id');
  } else {
    clearTimeout(service.timeoutId);
    service.running = false;
  }
};
&nbsp;
/**
 * Add service to the list of running services
 */
&nbsp;
WatchMen.prototype.addService = function (service) {
  this.services.push(service);
  this.start(service.id);
};
&nbsp;
/**
 * Remove service from the list of running services
 */
&nbsp;
WatchMen.prototype.removeService = function (id) {
  if (!id) throw new Error('no id provided');
&nbsp;
  var pos = this.services.map(function (s) {
    return s.id;
  }).indexOf(id);
&nbsp;
  if (pos == -1) {
    throw new Error('service with id ' + id + ' not found');
  } else {
    this.stop(id);
    this.services.splice(pos, 1);
  }
};
&nbsp;
/**
 * Get service by id
 * @param serviceId
 * @returns {object} Service
 */
&nbsp;
WatchMen.prototype.getServiceById = function (id) {
  return this.services.filter(function (s) {
    return s.id == id;
  })[0];
};</pre></td></tr>
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