81 lines
3.0 KiB
JavaScript
81 lines
3.0 KiB
JavaScript
var Q = require('q');
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var debug = require('debug')('ylt:ruleschecker');
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var RulesChecker = function() {
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'use strict';
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this.check = function(data, policies) {
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var results = {};
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debug('Starting checking rules');
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for (var metricName in policies) {
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var policy = policies[metricName];
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var rule;
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if (policy.tool &&
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data.toolsResults[policy.tool] &&
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data.toolsResults[policy.tool].metrics &&
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(data.toolsResults[policy.tool].metrics[metricName] || data.toolsResults[policy.tool].metrics[metricName] === 0)) {
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rule = {
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value: data.toolsResults[policy.tool].metrics[metricName],
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policy: policy
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};
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if (data.toolsResults[policy.tool].offenders &&
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data.toolsResults[policy.tool].offenders[metricName] &&
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data.toolsResults[policy.tool].offenders[metricName].length > 0) {
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rule.offenders = data.toolsResults[policy.tool].offenders[metricName];
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}
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rule.bad = rule.value > policy.isOkThreshold;
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rule.abnormal = policy.isAbnormalThreshold && rule.value >= policy.isAbnormalThreshold;
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// A value between 0 (bad) and 100 (very good).
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var score = (policy.isBadThreshold - rule.value) * 100 / (policy.isBadThreshold - policy.isOkThreshold);
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rule.score = Math.min(Math.max(Math.round(score), 0), 100);
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// A value between 0 (abnormal) and negative-infinity (your website is a blackhole)
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var abnormalityScore = (policy.isAbnormalThreshold - rule.value) * 100 / (policy.isAbnormalThreshold - policy.isOkThreshold);
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rule.abnormalityScore = Math.min(Math.round(abnormalityScore), 0);
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results[metricName] = rule;
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debug('Metric %s calculated. Score: %d', metricName, rule.score);
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} else if (policy.scoreFn) {
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debug('Custom score function for %s', metricName);
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// Custom score function
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rule = policy.scoreFn(data);
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// Check returned values (if the result is null, just don't save)
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if (rule) {
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rule.policy = {
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label: policy.label,
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message: policy.message
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};
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results[metricName] = rule;
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debug('Metric %s calculated. Score: %d', metricName, rule.score);
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} else {
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debug('Metric %s is null. Ignored.', metricName);
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}
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} else {
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debug('Metric %s not found for tool %s', metricName, policy.tool);
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}
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}
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debug('Rules checking finished');
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return results;
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};
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};
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module.exports = new RulesChecker(); |