rulesChecker.js 2.2 KB

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  1. var Q = require('q');
  2. var debug = require('debug')('ylt:ruleschecker');
  3. var RulesChecker = function() {
  4. 'use strict';
  5. this.check = function(data, policies) {
  6. var results = {};
  7. debug('Starting checking rules');
  8. for (var metricName in policies) {
  9. var policy = policies[metricName];
  10. if (data.toolsResults[policy.tool] &&
  11. data.toolsResults[policy.tool].metrics &&
  12. (data.toolsResults[policy.tool].metrics[metricName] || data.toolsResults[policy.tool].metrics[metricName] === 0)) {
  13. var rule = {
  14. value: data.toolsResults[policy.tool].metrics[metricName],
  15. policy: policy
  16. };
  17. if (data.toolsResults[policy.tool].offenders &&
  18. data.toolsResults[policy.tool].offenders[metricName] &&
  19. data.toolsResults[policy.tool].offenders[metricName].length > 0) {
  20. rule.offenders = data.toolsResults[policy.tool].offenders[metricName];
  21. }
  22. rule.bad = rule.value > policy.isOkThreshold;
  23. rule.abnormal = policy.isAbnormalThreshold && rule.value >= policy.isAbnormalThreshold;
  24. // A value between 0 (bad) and 100 (very good).
  25. var score = (policy.isBadThreshold - rule.value) * 100 / (policy.isBadThreshold - policy.isOkThreshold);
  26. rule.score = Math.min(Math.max(Math.round(score), 0), 100);
  27. // A value between 0 (abnormal) and negative-infinity (your website is a blackhole)
  28. var abnormalityScore = (policy.isAbnormalThreshold - rule.value) * 100 / (policy.isAbnormalThreshold - policy.isOkThreshold);
  29. rule.abnormalityScore = Math.min(Math.round(abnormalityScore), 0);
  30. results[metricName] = rule;
  31. } else {
  32. debug('Metric %s not found for tool %s', metricName, policy.tool);
  33. }
  34. }
  35. debug('Rules checking finished');
  36. return results;
  37. };
  38. };
  39. module.exports = new RulesChecker();