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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | 8x 8x 8x 8x 63x 63x 8x 31x 71x 106x 9x 62x 96x 62x 8x 96x 172x 8x 62x 62x 62x 8x 126x 8x 62x 62x 8x | import { Injectable } from '@angular/core';
import * as _ from 'lodash';
import { I18n } from '@ngx-translate/i18n-polyfill';
import {
AlertmanagerSilenceMatcher,
AlertmanagerSilenceMatcherMatch
} from '../models/alertmanager-silence';
import { PrometheusRule } from '../models/prometheus-alerts';
@Injectable({
providedIn: 'root'
})
export class PrometheusSilenceMatcherService {
private valueAttributePath = {
alertname: 'name',
instance: 'alerts.0.labels.instance',
job: 'alerts.0.labels.job',
severity: 'labels.severity'
};
constructor(private i18n: I18n) {}
singleMatch(
matcher: AlertmanagerSilenceMatcher,
rules: PrometheusRule[]
): AlertmanagerSilenceMatcherMatch {
return this.multiMatch([matcher], rules);
}
multiMatch(
matchers: AlertmanagerSilenceMatcher[],
rules: PrometheusRule[]
): AlertmanagerSilenceMatcherMatch {
if (matchers.some((matcher) => matcher.isRegex)) {
return;
}
matchers.forEach((matcher) => {
rules = this.getMatchedRules(matcher, rules);
});
return this.describeMatch(rules);
}
private getMatchedRules(
matcher: AlertmanagerSilenceMatcher,
rules: PrometheusRule[]
): PrometheusRule[] {
const attributePath = this.getAttributePath(matcher.name);
return rules.filter((r) => _.get(r, attributePath) === matcher.value);
}
private describeMatch(rules: PrometheusRule[]): AlertmanagerSilenceMatcherMatch {
let alerts = 0;
rules.forEach((r) => (alerts += r.alerts.length));
return {
status: this.getMatchText(rules.length, alerts),
cssClass: alerts ? 'has-success' : 'has-warning'
};
}
getAttributePath(name: string): string {
return this.valueAttributePath[name];
}
private getMatchText(rules: number, alerts: number): string {
const msg = {
noRule: this.i18n('Your matcher seems to match no currently defined rule or active alert.'),
noAlerts: this.i18n('no active alerts'),
alert: this.i18n('1 active alert'),
alerts: this.i18n('{{n}} active alerts', { n: alerts }),
rule: this.i18n('Matches 1 rule'),
rules: this.i18n('Matches {{n}} rules', { n: rules })
};
return rules
? this.i18n('{{rules}} with {{alerts}}.', {
rules: rules > 1 ? msg.rules : msg.rule,
alerts: alerts ? (alerts > 1 ? msg.alerts : msg.alert) : msg.noAlerts
})
: msg.noRule;
}
}
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