sitespeed.io/lib/plugins/budget/verify.js

'use strict';

/**
 * The old verificatuion and budget.json was deprecated in 8.0
 */
const get = require('lodash.get');
const merge = require('lodash.merge');
const log = require('intel').getLogger('sitespeedio.plugin.budget');
const friendlyNames = require('../../support/friendlynames');
const time = require('../../support/helpers/time');

function getItem(friendlyName, type, metric, value, limit, limitType) {
  return {
    metric: friendlyName.name,
    type,
    value,
    friendlyValue: friendlyName.format(value),
    limit,
    friendlyLimit: friendlyName.format(limit),
    limitType,
    status: 'working'
  };
}

module.exports = {
  verify(message, result, budgets, alias) {
    // Let us merge the specific configuration for this URL together
    // with the generic one. In the future we can fine tune this, since
    // we keep all metrics within a specific URL

    // If we have a match for the alias, use that first, if not use the URL and
    // then the specific one
    let budgetSetupSpecificForThisURL;
    if (alias) {
      budgetSetupSpecificForThisURL = get(budgets.budget, alias);
    }
    if (!budgetSetupSpecificForThisURL) {
      budgetSetupSpecificForThisURL = get(budgets.budget, message.url);
    }
    const budgetForThisURL = {};
    merge(budgetForThisURL, budgets.budget, budgetSetupSpecificForThisURL);

    // Keep failing/working metrics here
    const failing = [];
    const working = [];
    const url = message.url;
    log.verbose('Applying budget to url %s', url);
    const tool = message.type.split('.')[0];
    // Go through all metrics that are configured
    // timing, request, coach etc
    for (let metricType of Object.keys(budgetForThisURL)) {
      for (let metric of Object.keys(budgetForThisURL[metricType])) {
        if (friendlyNames[tool][metricType]) {
          if (!friendlyNames[tool][metricType][metric]) {
            if (metricType === 'usertimings') {
              const budgetValue = budgetForThisURL[metricType][metric];
              let value =
                get(
                  message.data,
                  'statistics.timings.userTimings.marks.' + metric + '.median'
                ) ||
                get(
                  message.data,
                  'statistics.timings.userTimings.measures.' +
                    metric +
                    '.median'
                );
              if (value) {
                const item = getItem(
                  { name: metric, format: time.ms },
                  metricType,
                  metric,
                  value,
                  budgetValue,
                  'max'
                );
                if (value > budgetValue) {
                  item.status = 'failing';
                  failing.push(item);
                } else {
                  working.push(item);
                }
                continue;
              } else {
                log.error(`Could not find the user timin ${metric}`);
                continue;
              }
            } else {
              log.error(
                `It seems like you configure a metric ${metric} that we do not have a friendly name. Please check the docs if it is right.`
              );
            }
          }
          const fullPath = friendlyNames[tool][metricType][metric].path;
          let value = get(message.data, fullPath);
          if (value && message.type === 'lighthouse.pageSummary') {
            value = value * 100; // The score in Lighthouse is 0-1
          } else if (
            value &&
            message.type === 'pagexray.pageSummary' &&
            metricType === 'httpErrors'
          ) {
            // count number of http server error
            value = Object.keys(value).filter(code => code > 399).length;
          }
          // We got a matching metric
          if (value !== undefined) {
            const budgetValue = budgetForThisURL[metricType][metric];
            const item = getItem(
              friendlyNames[tool][metricType][metric],
              metricType,
              metric,
              value,
              budgetValue,
              tool === 'coach' || tool === 'lighthouse' || tool === 'gpsi'
                ? 'min'
                : 'max'
            );
            if (tool === 'coach' || tool === 'lighthouse' || tool === 'gpsi') {
              if (value < budgetValue) {
                item.status = 'failing';
                failing.push(item);
              } else {
                working.push(item);
              }
            } else {
              if (value > budgetValue) {
                item.status = 'failing';
                failing.push(item);
              } else {
                working.push(item);
              }
            }
          } else {
            log.debug('Missing data for budget metric ' + metric);
          }
        }
      }
    }
    // group working/failing per URL
    if (failing.length > 0) {
      result.failing[message.url] = result.failing[message.url]
        ? result.failing[message.url].concat(failing)
        : failing;
    }

    if (working.length > 0) {
      result.working[message.url] = result.working[message.url]
        ? result.working[message.url].concat(working)
        : working;
    }
  }
};