You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

33 lines
1.1 KiB

import { Aggregation } from './types';
import * as _ from 'lodash';
export function filterMetricListByAlias(list: any[], alias: string | undefined, option: string): any[] {
const filteredSeries = _.filter(list, serie => serie.alias === alias);
if(filteredSeries.length === 0) {
throw new Error(`${option}: Can't find metric for ${alias} name.`);
}
if(filteredSeries.length > 1) {
throw new Error(`${option}: Get ${filteredSeries.length} metrics for ${alias} name. Please choose one.`);
}
return filteredSeries;
}
export function getAggregatedValueFromSerie(serie: any, aggregation = Aggregation.LAST): number | null {
// series types { datapoints: [number, number][]}
if(serie === undefined) {
return null;
}
if(serie.datapoints.length === 0) {
return null;
}
switch(aggregation) {
case Aggregation.LAST:
const lastRow = _.last((serie.datapoints as [number, number][]));
// [0] because it is Grafan series. So 0 idx for values, 1 idx for timestamps
// @ts-ignore
return !_.isEmpty(lastRow) ? lastRow[0] : null;
default:
throw new Error(`Unknown aggregation type: ${aggregation}`)
}
}