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import $ from 'jquery';
import _ from 'underscore';
import { s__, n__, sprintf } from '~/locale';
import axios from '../lib/utils/axios_utils';
import PANEL_STATE from './constants';
import { backOff } from '../lib/utils/common_utils';
export default class PrometheusMetrics {
constructor(wrapperSelector) {
this.backOffRequestCounter = 0;
this.$wrapper = $(wrapperSelector);
this.$monitoredMetricsPanel = this.$wrapper.find('.js-panel-monitored-metrics');
this.$monitoredMetricsCount = this.$monitoredMetricsPanel.find('.js-monitored-count');
this.$monitoredMetricsLoading = this.$monitoredMetricsPanel.find('.js-loading-metrics');
this.$monitoredMetricsEmpty = this.$monitoredMetricsPanel.find('.js-empty-metrics');
this.$monitoredMetricsList = this.$monitoredMetricsPanel.find('.js-metrics-list');
this.$missingEnvVarPanel = this.$wrapper.find('.js-panel-missing-env-vars');
this.$panelToggle = this.$missingEnvVarPanel.find('.js-panel-toggle');
this.$missingEnvVarMetricCount = this.$missingEnvVarPanel.find('.js-env-var-count');
this.$missingEnvVarMetricsList = this.$missingEnvVarPanel.find('.js-missing-var-metrics-list');
this.activeMetricsEndpoint = this.$monitoredMetricsPanel.data('activeMetrics');
this.helpMetricsPath = this.$monitoredMetricsPanel.data('metrics-help-path');
this.$panelToggle.on('click', e => this.handlePanelToggle(e));
}
/* eslint-disable class-methods-use-this */
handlePanelToggle(e) {
const $toggleBtn = $(e.currentTarget);
const $currentPanelBody = $toggleBtn.closest('.card').find('.card-body');
$currentPanelBody.toggleClass('hidden');
if ($toggleBtn.hasClass('fa-caret-down')) {
$toggleBtn.removeClass('fa-caret-down').addClass('fa-caret-right');
} else {
$toggleBtn.removeClass('fa-caret-right').addClass('fa-caret-down');
}
}
showMonitoringMetricsPanelState(stateName) {
switch (stateName) {
case PANEL_STATE.LOADING:
this.$monitoredMetricsLoading.removeClass('hidden');
this.$monitoredMetricsEmpty.addClass('hidden');
this.$monitoredMetricsList.addClass('hidden');
break;
case PANEL_STATE.LIST:
this.$monitoredMetricsLoading.addClass('hidden');
this.$monitoredMetricsEmpty.addClass('hidden');
this.$monitoredMetricsList.removeClass('hidden');
break;
default:
this.$monitoredMetricsLoading.addClass('hidden');
this.$monitoredMetricsEmpty.removeClass('hidden');
this.$monitoredMetricsList.addClass('hidden');
break;
}
}
populateActiveMetrics(metrics) {
let totalMonitoredMetrics = 0;
let totalMissingEnvVarMetrics = 0;
let totalExporters = 0;
metrics.forEach((metric) => {
if (metric.active_metrics > 0) {
totalExporters += 1;
this.$monitoredMetricsList.append(`<li>${_.escape(metric.group)}<span class="badge">${_.escape(metric.active_metrics)}</span></li>`);
totalMonitoredMetrics += metric.active_metrics;
if (metric.metrics_missing_requirements > 0) {
this.$missingEnvVarMetricsList.append(`<li>${_.escape(metric.group)}</li>`);
totalMissingEnvVarMetrics += 1;
}
}
});
if (totalMonitoredMetrics === 0) {
const emptyCommonMetricsText = sprintf(s__('PrometheusService|<p class="text-tertiary">No <a href="%{docsUrl}">common metrics</a> were found</p>'), {
docsUrl: this.helpMetricsPath,
}, false);
this.$monitoredMetricsEmpty.empty();
this.$monitoredMetricsEmpty.append(emptyCommonMetricsText);
this.showMonitoringMetricsPanelState(PANEL_STATE.EMPTY);
} else {
const metricsCountText = sprintf(s__('PrometheusService|%{exporters} with %{metrics} were found'), {
exporters: n__('%d exporter', '%d exporters', totalExporters),
metrics: n__('%d metric', '%d metrics', totalMonitoredMetrics),
});
this.$monitoredMetricsCount.text(metricsCountText);
this.showMonitoringMetricsPanelState(PANEL_STATE.LIST);
if (totalMissingEnvVarMetrics > 0) {
this.$missingEnvVarPanel.removeClass('hidden');
this.$missingEnvVarMetricCount.text(totalMissingEnvVarMetrics);
}
}
}
loadActiveMetrics() {
this.showMonitoringMetricsPanelState(PANEL_STATE.LOADING);
backOff((next, stop) => {
axios.get(this.activeMetricsEndpoint)
.then(({ data }) => {
if (data && data.success) {
stop(data);
} else {
this.backOffRequestCounter += 1;
if (this.backOffRequestCounter < 3) {
next();
} else {
stop(data);
}
}
})
.catch(stop);
})
.then((res) => {
if (res && res.data && res.data.length) {
this.populateActiveMetrics(res.data);
} else {
this.showMonitoringMetricsPanelState(PANEL_STATE.EMPTY);
}
})
.catch(() => {
this.showMonitoringMetricsPanelState(PANEL_STATE.EMPTY);
});
}
}
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