Initial ES6 migration. module.js and datasource.js are migrated to ES6.
This commit is contained in:
Alexander Zobnin
430
src/datasource-zabbix/datasource.js
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430
src/datasource-zabbix/datasource.js
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//import angular from 'angular';
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import _ from 'lodash';
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import {parse as dateMathParse} from 'app/core/utils/datemath';
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import Utils from './utils';
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import metricFunctions from './metricFunctions';
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import {zabbixHelperSrv} from './helperFunctions';
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import {ZabbixAPI} from './zabbixAPI';
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import {ZabbixCachingProxy} from './zabbixCache';
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import {QueryProcessor} from './queryProcessor';
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import {DataProcessingService} from './dataProcessingService';
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export class ZabbixAPIDatasource {
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constructor(instanceSettings, $q, templateSrv, alertSrv, ZabbixAPI, ZabbixCachingProxy, QueryProcessor, zabbixHelperSrv, DataProcessingService) {
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// General data source settings
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this.name = instanceSettings.name;
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this.url = instanceSettings.url;
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this.basicAuth = instanceSettings.basicAuth;
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this.withCredentials = instanceSettings.withCredentials;
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// Zabbix API credentials
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this.username = instanceSettings.jsonData.username;
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this.password = instanceSettings.jsonData.password;
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// Use trends instead history since specified time
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this.trends = instanceSettings.jsonData.trends;
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this.trendsFrom = instanceSettings.jsonData.trendsFrom || '7d';
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// Set cache update interval
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var ttl = instanceSettings.jsonData.cacheTTL || '1h';
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this.cacheTTL = Utils.parseInterval(ttl);
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// Initialize Zabbix API
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this.zabbixAPI = new ZabbixAPI(this.url, this.username, this.password, this.basicAuth, this.withCredentials);
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// Initialize cache service
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this.zabbixCache = new ZabbixCachingProxy(this.zabbixAPI, this.cacheTTL);
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// Initialize query builder
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this.queryProcessor = new QueryProcessor(this.zabbixCache);
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// Dependencies
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this.q = $q;
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this.templateSrv = templateSrv;
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this.alertSrv = alertSrv;
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this.zabbixHelperSrv = zabbixHelperSrv;
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this.DataProcessingService = DataProcessingService;
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console.log(this.zabbixCache);
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}
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////////////////////////
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// Datasource methods //
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////////////////////////
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/**
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* Test connection to Zabbix API
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* @return {object} Connection status and Zabbix API version
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*/
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testDatasource() {
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var self = this;
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return this.zabbixAPI.getVersion().then(function (version) {
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return self.zabbixAPI.login().then(function (auth) {
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if (auth) {
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return {
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status: "success",
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title: "Success",
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message: "Zabbix API version: " + version
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};
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} else {
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return {
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status: "error",
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title: "Invalid user name or password",
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message: "Zabbix API version: " + version
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};
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}
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}, function(error) {
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console.log(error);
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return {
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status: "error",
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title: "Connection failed",
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message: error
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};
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});
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},
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function(error) {
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console.log(error);
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return {
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status: "error",
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title: "Connection failed",
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message: "Could not connect to given url"
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};
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});
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}
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/**
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* Query panel data. Calls for each panel in dashboard.
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* @param {Object} options Contains time range, targets and other info.
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* @return {Object} Grafana metrics object with timeseries data for each target.
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*/
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query(options) {
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var self = this;
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// get from & to in seconds
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var from = Math.ceil(dateMathParse(options.range.from) / 1000);
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var to = Math.ceil(dateMathParse(options.range.to) / 1000);
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var useTrendsFrom = Math.ceil(dateMathParse('now-' + this.trendsFrom) / 1000);
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// Create request for each target
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var promises = _.map(options.targets, function(target) {
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if (target.mode !== 1) {
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// Don't request undefined and hidden targets
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if (target.hide || !target.group ||
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!target.host || !target.item) {
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return [];
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}
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// Replace templated variables
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var groupFilter = this.templateSrv.replace(target.group.filter, options.scopedVars);
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var hostFilter = this.templateSrv.replace(target.host.filter, options.scopedVars);
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var appFilter = this.templateSrv.replace(target.application.filter, options.scopedVars);
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var itemFilter = this.templateSrv.replace(target.item.filter, options.scopedVars);
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// Query numeric data
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if (!target.mode || target.mode === 0) {
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// Build query in asynchronous manner
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return self.queryProcessor.build(groupFilter, hostFilter, appFilter, itemFilter)
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.then(function(items) {
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// Add hostname for items from multiple hosts
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var addHostName = target.host.isRegex;
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var getHistory;
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// Use trends
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if ((from < useTrendsFrom) && self.trends) {
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// Find trendValue() function and get specified trend value
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var trendFunctions = _.map(metricFunctions.getCategories()['Trends'], 'name');
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var trendValueFunc = _.find(target.functions, function(func) {
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return _.contains(trendFunctions, func.def.name);
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});
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var valueType = trendValueFunc ? trendValueFunc.params[0] : "avg";
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getHistory = self.zabbixAPI.getTrend(items, from, to).then(function(history) {
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return self.queryProcessor.handleTrends(history, addHostName, valueType);
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});
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} else {
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// Use history
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getHistory = self.zabbixCache.getHistory(items, from, to).then(function(history) {
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return self.queryProcessor.handleHistory(history, addHostName);
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});
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}
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return getHistory.then(function (timeseries_data) {
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timeseries_data = _.map(timeseries_data, function (timeseries) {
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// Filter only transform functions
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var transformFunctions = bindFunctionDefs(target.functions, 'Transform', self.DataProcessingService);
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// Metric data processing
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var dp = timeseries.datapoints;
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for (var i = 0; i < transformFunctions.length; i++) {
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dp = transformFunctions[i](dp);
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}
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timeseries.datapoints = dp;
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return timeseries;
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});
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// Aggregations
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var aggregationFunctions = bindFunctionDefs(target.functions, 'Aggregate', self.DataProcessingService);
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var dp = _.map(timeseries_data, 'datapoints');
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if (aggregationFunctions.length) {
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for (var i = 0; i < aggregationFunctions.length; i++) {
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dp = aggregationFunctions[i](dp);
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}
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var lastAgg = _.findLast(target.functions, function(func) {
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return _.contains(
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_.map(metricFunctions.getCategories()['Aggregate'], 'name'), func.def.name);
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});
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timeseries_data = [{
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target: lastAgg.text,
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datapoints: dp
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}];
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}
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// Apply alias functions
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var aliasFunctions = bindFunctionDefs(target.functions, 'Alias', self.DataProcessingService);
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for (var j = 0; j < aliasFunctions.length; j++) {
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_.each(timeseries_data, aliasFunctions[j]);
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}
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return timeseries_data;
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});
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});
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}
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// Query text data
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else if (target.mode === 2) {
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return self.queryProcessor.build(groupFilter, hostFilter, appFilter, itemFilter)
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.then(function(items) {
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var deferred = self.q.defer();
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if (items.length) {
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self.zabbixAPI.getLastValue(items[0].itemid).then(function(lastvalue) {
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if (target.textFilter) {
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var text_extract_pattern = new RegExp(self.templateSrv.replace(target.textFilter, options.scopedVars));
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var result = text_extract_pattern.exec(lastvalue);
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if (result) {
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if (target.useCaptureGroups) {
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result = result[1];
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} else {
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result = result[0];
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}
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}
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deferred.resolve(result);
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} else {
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deferred.resolve(lastvalue);
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}
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});
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} else {
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deferred.resolve(null);
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}
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return deferred.promise.then(function(text) {
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return {
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target: target.item.name,
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datapoints: [[text, to * 1000]]
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};
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});
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});
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}
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}
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// IT services mode
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else if (target.mode === 1) {
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// Don't show undefined and hidden targets
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if (target.hide || !target.itservice || !target.slaProperty) {
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return [];
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} else {
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return this.zabbixAPI.getSLA(target.itservice.serviceid, from, to)
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.then(_.bind(zabbixHelperSrv.handleSLAResponse, zabbixHelperSrv, target.itservice, target.slaProperty));
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}
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}
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}, this);
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var self = this;
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// Data for panel (all targets)
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return this.q.all(_.flatten(promises))
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.then(_.flatten)
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.then(function (timeseries_data) {
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// Series downsampling
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var data = _.map(timeseries_data, function(timeseries) {
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var DPS = self.DataProcessingService;
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if (timeseries.datapoints.length > options.maxDataPoints) {
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timeseries.datapoints = DPS.groupBy(options.interval, DPS.AVERAGE, timeseries.datapoints);
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}
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return timeseries;
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});
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return { data: data };
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});
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}
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////////////////
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// Templating //
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////////////////
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/**
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* Find metrics from templated request.
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*
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* @param {string} query Query from Templating
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* @return {string} Metric name - group, host, app or item or list
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* of metrics in "{metric1,metcic2,...,metricN}" format.
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*/
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metricFindQuery(query) {
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// Split query. Query structure:
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// group.host.app.item
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var parts = [];
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_.each(query.split('.'), function (part) {
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part = this.templateSrv.replace(part);
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// Replace wildcard to regex
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if (part === '*') {
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part = '/.*/';
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}
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parts.push(part);
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});
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var template = _.object(['group', 'host', 'app', 'item'], parts);
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// Get items
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if (parts.length === 4) {
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return this.queryProcessor.filterItems(template.group, template.host,
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template.app, 'all', true)
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.then(function(items) {
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return _.map(items, formatMetric);
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});
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}
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// Get applications
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else if (parts.length === 3) {
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return this.queryProcessor.filterApplications(template.group, template.host)
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.then(function(apps) {
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return _.map(apps, formatMetric);
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});
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}
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// Get hosts
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else if (parts.length === 2) {
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return this.queryProcessor.filterHosts(template.group)
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.then(function(hosts) {
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return _.map(hosts, formatMetric);
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});
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}
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// Get groups
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else if (parts.length === 1) {
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return this.zabbixCache.getGroups(template.group).then(function(groups) {
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return _.map(groups, formatMetric);
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});
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}
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// Return empty object for invalid request
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else {
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return this.q.when([]);
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}
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}
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/////////////////
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// Annotations //
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/////////////////
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annotationQuery(options) {
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var from = Math.ceil(dateMathParse(options.rangeRaw.from) / 1000);
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var to = Math.ceil(dateMathParse(options.rangeRaw.to) / 1000);
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var annotation = options.annotation;
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var self = this;
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var showEvents = annotation.showOkEvents ? [0, 1] : 1;
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var buildQuery = self.queryProcessor.buildTriggerQuery(this.templateSrv.replace(annotation.group),
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this.templateSrv.replace(annotation.host),
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this.templateSrv.replace(annotation.application));
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return buildQuery.then(function(query) {
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return self.zabbixAPI.getTriggers(query.groupids,
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query.hostids,
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query.applicationids,
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showEvents)
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.then(function(triggers) {
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// Filter triggers by description
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if (Utils.isRegex(annotation.trigger)) {
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triggers = _.filter(triggers, function(trigger) {
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return Utils.buildRegex(annotation.trigger).test(trigger.description);
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});
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} else if (annotation.trigger) {
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triggers = _.filter(triggers, function(trigger) {
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return trigger.description === annotation.trigger;
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});
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}
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// Remove events below the chose severity
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triggers = _.filter(triggers, function(trigger) {
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return Number(trigger.priority) >= Number(annotation.minseverity);
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});
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var objectids = _.map(triggers, 'triggerid');
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var params = {
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output: 'extend',
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time_from: from,
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time_till: to,
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objectids: objectids,
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select_acknowledges: 'extend',
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selectHosts: 'extend',
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value: showEvents
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};
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return self.zabbixAPI.request('event.get', params)
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.then(function (events) {
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var indexedTriggers = _.indexBy(triggers, 'triggerid');
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// Hide acknowledged events if option enabled
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if (annotation.hideAcknowledged) {
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events = _.filter(events, function(event) {
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return !event.acknowledges.length;
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});
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}
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return _.map(events, function(e) {
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var title ='';
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if (annotation.showHostname) {
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title += e.hosts[0].name + ': ';
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}
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// Show event type (OK or Problem)
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title += Number(e.value) ? 'Problem' : 'OK';
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var formatted_acknowledges = Utils.formatAcknowledges(e.acknowledges);
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return {
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annotation: annotation,
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time: e.clock * 1000,
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title: title,
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text: indexedTriggers[e.objectid].description + formatted_acknowledges
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};
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});
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});
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});
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});
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}
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}
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function bindFunctionDefs(functionDefs, category, DataProcessingService) {
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'use strict';
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var aggregationFunctions = _.map(metricFunctions.getCategories()[category], 'name');
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var aggFuncDefs = _.filter(functionDefs, function(func) {
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return _.contains(aggregationFunctions, func.def.name);
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});
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return _.map(aggFuncDefs, function(func) {
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var funcInstance = metricFunctions.createFuncInstance(func.def, func.params);
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return funcInstance.bindFunction(DataProcessingService.metricFunctions);
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});
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}
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function formatMetric(metricObj) {
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'use strict';
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return {
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text: metricObj.name,
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expandable: false
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};
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}
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