diff --git a/dist/datasource-zabbix/datasource.js b/dist/datasource-zabbix/datasource.js
index cda4740..7abf536 100644
--- a/dist/datasource-zabbix/datasource.js
+++ b/dist/datasource-zabbix/datasource.js
@@ -220,26 +220,28 @@ System.register(['lodash', 'app/core/utils/datemath', './utils', './migrations',
           this.basicAuth = instanceSettings.basicAuth;
           this.withCredentials = instanceSettings.withCredentials;
 
+          var jsonData = instanceSettings.jsonData;
+
           // Zabbix API credentials
-          this.username = instanceSettings.jsonData.username;
-          this.password = instanceSettings.jsonData.password;
+          this.username = jsonData.username;
+          this.password = jsonData.password;
 
           // Use trends instead history since specified time
-          this.trends = instanceSettings.jsonData.trends;
-          this.trendsFrom = instanceSettings.jsonData.trendsFrom || '7d';
-          this.trendsRange = instanceSettings.jsonData.trendsRange || '4d';
+          this.trends = jsonData.trends;
+          this.trendsFrom = jsonData.trendsFrom || '7d';
+          this.trendsRange = jsonData.trendsRange || '4d';
 
           // Set cache update interval
-          var ttl = instanceSettings.jsonData.cacheTTL || '1h';
+          var ttl = jsonData.cacheTTL || '1h';
           this.cacheTTL = utils.parseInterval(ttl);
 
           // Alerting options
-          this.alertingEnabled = instanceSettings.jsonData.alerting;
-          this.addThresholds = instanceSettings.jsonData.addThresholds;
-          this.alertingMinSeverity = instanceSettings.jsonData.alertingMinSeverity || c.SEV_WARNING;
+          this.alertingEnabled = jsonData.alerting;
+          this.addThresholds = jsonData.addThresholds;
+          this.alertingMinSeverity = jsonData.alertingMinSeverity || c.SEV_WARNING;
 
           // Direct DB Connection options
-          var dbConnectionOptions = instanceSettings.jsonData.dbConnection || {};
+          var dbConnectionOptions = jsonData.dbConnection || {};
           this.enableDirectDBConnection = dbConnectionOptions.enable;
           this.sqlDatasourceId = dbConnectionOptions.datasourceId;
 
diff --git a/dist/datasource-zabbix/datasource.js.map b/dist/datasource-zabbix/datasource.js.map
index d569ef3..26165b0 100644
--- a/dist/datasource-zabbix/datasource.js.map
+++ b/dist/datasource-zabbix/datasource.js.map
@@ -1 +1 @@
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_ from 'lodash';\nimport * as dateMath from 'app/core/utils/datemath';\nimport * as utils from './utils';\nimport * as migrations from './migrations';\nimport * as metricFunctions from './metricFunctions';\nimport * as c from './constants';\nimport dataProcessor from './dataProcessor';\nimport responseHandler from './responseHandler';\nimport './zabbix.js';\nimport './zabbixAlerting.service.js';\nimport {ZabbixAPIError} from './zabbixAPICore.service.js';\n\nclass ZabbixAPIDatasource {\n\n  /** @ngInject */\n  constructor(instanceSettings, templateSrv, alertSrv, dashboardSrv, zabbixAlertingSrv, Zabbix) {\n    this.templateSrv = templateSrv;\n    this.alertSrv = alertSrv;\n    this.dashboardSrv = dashboardSrv;\n    this.zabbixAlertingSrv = zabbixAlertingSrv;\n\n    // Use custom format for template variables\n    this.replaceTemplateVars = _.partial(replaceTemplateVars, this.templateSrv);\n\n    // General data source settings\n    this.name             = instanceSettings.name;\n    this.url              = instanceSettings.url;\n    this.basicAuth        = instanceSettings.basicAuth;\n    this.withCredentials  = instanceSettings.withCredentials;\n\n    // Zabbix API credentials\n    this.username         = instanceSettings.jsonData.username;\n    this.password         = instanceSettings.jsonData.password;\n\n    // Use trends instead history since specified time\n    this.trends           = instanceSettings.jsonData.trends;\n    this.trendsFrom       = instanceSettings.jsonData.trendsFrom || '7d';\n    this.trendsRange      = instanceSettings.jsonData.trendsRange || '4d';\n\n    // Set cache update interval\n    var ttl = instanceSettings.jsonData.cacheTTL || '1h';\n    this.cacheTTL = utils.parseInterval(ttl);\n\n    // Alerting options\n    this.alertingEnabled = instanceSettings.jsonData.alerting;\n    this.addThresholds = instanceSettings.jsonData.addThresholds;\n    this.alertingMinSeverity = instanceSettings.jsonData.alertingMinSeverity || c.SEV_WARNING;\n\n    // Direct DB Connection options\n    let dbConnectionOptions = instanceSettings.jsonData.dbConnection || {};\n    this.enableDirectDBConnection = dbConnectionOptions.enable;\n    this.sqlDatasourceId = dbConnectionOptions.datasourceId;\n\n    let zabbixOptions = {\n      username: this.username,\n      password: this.password,\n      basicAuth: this.basicAuth,\n      withCredentials: this.withCredentials,\n      cacheTTL: this.cacheTTL,\n      enableDirectDBConnection: this.enableDirectDBConnection,\n      sqlDatasourceId: this.sqlDatasourceId\n    };\n\n    this.zabbix = new Zabbix(this.url, zabbixOptions);\n  }\n\n  ////////////////////////\n  // Datasource methods //\n  ////////////////////////\n\n  /**\n   * Query panel data. Calls for each panel in dashboard.\n   * @param  {Object} options   Contains time range, targets and other info.\n   * @return {Object} Grafana metrics object with timeseries data for each target.\n   */\n  query(options) {\n    // Get alerts for current panel\n    if (this.alertingEnabled) {\n      this.alertQuery(options).then(alert => {\n        this.zabbixAlertingSrv.setPanelAlertState(options.panelId, alert.state);\n\n        this.zabbixAlertingSrv.removeZabbixThreshold(options.panelId);\n        if (this.addThresholds) {\n          _.forEach(alert.thresholds, threshold => {\n            this.zabbixAlertingSrv.setPanelThreshold(options.panelId, threshold);\n          });\n        }\n      });\n    }\n\n    // Create request for each target\n    let promises = _.map(options.targets, t => {\n      // Don't request undefined and hidden targets\n      if (t.hide) {\n        return [];\n      }\n\n      let timeFrom = Math.ceil(dateMath.parse(options.range.from) / 1000);\n      let timeTo = Math.ceil(dateMath.parse(options.range.to) / 1000);\n\n      // Prevent changes of original object\n      let target = _.cloneDeep(t);\n      this.replaceTargetVariables(target, options);\n\n      // Apply Time-related functions (timeShift(), etc)\n      let timeFunctions = bindFunctionDefs(target.functions, 'Time');\n      if (timeFunctions.length) {\n        const [time_from, time_to] = sequence(timeFunctions)([timeFrom, timeTo]);\n        timeFrom = time_from;\n        timeTo = time_to;\n      }\n      let timeRange = [timeFrom, timeTo];\n\n      let useTrends = this.isUseTrends(timeRange);\n\n      // Metrics or Text query mode\n      if (!target.mode || target.mode === c.MODE_METRICS ||\n          target.mode === c.MODE_TEXT || target.mode === c.MODE_ITEMID) {\n        // Migrate old targets\n        target = migrations.migrate(target);\n\n        // Don't request undefined and hidden targets\n        if (target.hide || !target.group || !target.host || !target.item) {\n          return [];\n        }\n\n        if (!target.mode || target.mode === c.MODE_METRICS) {\n          return this.queryNumericData(target, timeRange, useTrends, options);\n        } else if (target.mode === c.MODE_TEXT) {\n          return this.queryTextData(target, timeRange);\n        } else if (target.mode === c.MODE_ITEMID) {\n          return this.queryItemIdData(target, timeRange, useTrends, options);\n        }\n      } else if (target.mode === c.MODE_ITSERVICE) {\n        // IT services mode\n        return this.queryITServiceData(target, timeRange, options);\n      }\n    });\n\n    // Data for panel (all targets)\n    return Promise.all(_.flatten(promises))\n      .then(_.flatten)\n      .then(data => {\n        return { data: data };\n      });\n  }\n\n  /**\n   * Query target data for Metrics mode\n   */\n  queryNumericData(target, timeRange, useTrends, options) {\n    let getItemOptions = {\n      itemtype: 'num'\n    };\n    return this.zabbix.getItemsFromTarget(target, getItemOptions)\n    .then(items => {\n      return this.queryNumericDataForItems(items, target, timeRange, useTrends, options);\n    });\n  }\n\n  /**\n   * Query history for numeric items\n   */\n  queryNumericDataForItems(items, target, timeRange, useTrends, options) {\n    let [timeFrom, timeTo] = timeRange;\n    let getHistoryPromise;\n    options.consolidateBy = getConsolidateBy(target);\n\n    if (useTrends) {\n      if (this.enableDirectDBConnection) {\n        getHistoryPromise = this.zabbix.getTrendsDB(items, timeFrom, timeTo, options)\n        .then(history => this.zabbix.dbConnector.handleGrafanaTSResponse(history, items));\n      } else {\n        let valueType = this.getTrendValueType(target);\n        getHistoryPromise = this.zabbix.getTrend(items, timeFrom, timeTo)\n        .then(history => responseHandler.handleTrends(history, items, valueType))\n        .then(timeseries => {\n          // Sort trend data, issue #202\n          _.forEach(timeseries, series => {\n            series.datapoints = _.sortBy(series.datapoints, point => point[c.DATAPOINT_TS]);\n          });\n          return timeseries;\n        });\n      }\n    } else {\n      // Use history\n      if (this.enableDirectDBConnection) {\n        getHistoryPromise = this.zabbix.getHistoryDB(items, timeFrom, timeTo, options)\n        .then(history => this.zabbix.dbConnector.handleGrafanaTSResponse(history, items));\n      } else {\n        getHistoryPromise = this.zabbix.getHistory(items, timeFrom, timeTo)\n        .then(history => responseHandler.handleHistory(history, items));\n      }\n    }\n\n    return getHistoryPromise\n    .then(timeseries => this.applyDataProcessingFunctions(timeseries, target))\n    .then(timeseries => downsampleSeries(timeseries, options))\n    .catch(error => {\n      console.log(error);\n      return [];\n    });\n  }\n\n  getTrendValueType(target) {\n    // Find trendValue() function and get specified trend value\n    var trendFunctions = _.map(metricFunctions.getCategories()['Trends'], 'name');\n    var trendValueFunc = _.find(target.functions, func => {\n      return _.includes(trendFunctions, func.def.name);\n    });\n    return trendValueFunc ? trendValueFunc.params[0] : \"avg\";\n  }\n\n  applyDataProcessingFunctions(timeseries_data, target) {\n    let transformFunctions   = bindFunctionDefs(target.functions, 'Transform');\n    let aggregationFunctions = bindFunctionDefs(target.functions, 'Aggregate');\n    let filterFunctions      = bindFunctionDefs(target.functions, 'Filter');\n    let aliasFunctions       = bindFunctionDefs(target.functions, 'Alias');\n\n    // Apply transformation functions\n    timeseries_data = _.cloneDeep(_.map(timeseries_data, timeseries => {\n      timeseries.datapoints = sequence(transformFunctions)(timeseries.datapoints);\n      return timeseries;\n    }));\n\n    // Apply filter functions\n    if (filterFunctions.length) {\n      timeseries_data = sequence(filterFunctions)(timeseries_data);\n    }\n\n    // Apply aggregations\n    if (aggregationFunctions.length) {\n      let dp = _.map(timeseries_data, 'datapoints');\n      dp = sequence(aggregationFunctions)(dp);\n\n      let aggFuncNames = _.map(metricFunctions.getCategories()['Aggregate'], 'name');\n      let lastAgg = _.findLast(target.functions, func => {\n        return _.includes(aggFuncNames, func.def.name);\n      });\n\n      timeseries_data = [{\n        target: lastAgg.text,\n        datapoints: dp\n      }];\n    }\n\n    // Apply alias functions\n    _.forEach(timeseries_data, sequence(aliasFunctions));\n\n    // Apply Time-related functions (timeShift(), etc)\n    // Find timeShift() function and get specified trend value\n    this.applyTimeShiftFunction(timeseries_data, target);\n\n    return timeseries_data;\n  }\n\n  applyTimeShiftFunction(timeseries_data, target) {\n    // Find timeShift() function and get specified interval\n    let timeShiftFunc = _.find(target.functions, (func) => {\n      return func.def.name === 'timeShift';\n    });\n    if (timeShiftFunc) {\n      let shift = timeShiftFunc.params[0];\n      _.forEach(timeseries_data, (series) => {\n        series.datapoints = dataProcessor.unShiftTimeSeries(shift, series.datapoints);\n      });\n    }\n  }\n\n  /**\n   * Query target data for Text mode\n   */\n  queryTextData(target, timeRange) {\n    let [timeFrom, timeTo] = timeRange;\n    let options = {\n      itemtype: 'text'\n    };\n    return this.zabbix.getItemsFromTarget(target, options)\n      .then(items => {\n        if (items.length) {\n          return this.zabbix.getHistory(items, timeFrom, timeTo)\n          .then(history => {\n            return responseHandler.handleText(history, items, target);\n          });\n        } else {\n          return Promise.resolve([]);\n        }\n      });\n  }\n\n  /**\n   * Query target data for Item ID mode\n   */\n  queryItemIdData(target, timeRange, useTrends, options) {\n    let itemids = target.itemids;\n    itemids = this.templateSrv.replace(itemids, options.scopedVars, zabbixItemIdsTemplateFormat);\n    itemids = _.map(itemids.split(','), itemid => itemid.trim());\n\n    if (!itemids) {\n      return [];\n    }\n\n    return this.zabbix.getItemsByIDs(itemids)\n    .then(items => {\n      return this.queryNumericDataForItems(items, target, timeRange, useTrends, options);\n    });\n  }\n\n  /**\n   * Query target data for IT Services mode\n   */\n  queryITServiceData(target, timeRange, options) {\n    // Don't show undefined and hidden targets\n    if (target.hide || (!target.itservice && !target.itServiceFilter) || !target.slaProperty) {\n      return [];\n    }\n\n    let itServiceIds = [];\n    let itServices = [];\n    let itServiceFilter;\n    let isOldVersion = target.itservice && !target.itServiceFilter;\n\n    if (isOldVersion) {\n      // Backward compatibility\n      itServiceFilter = '/.*/';\n    } else {\n      itServiceFilter = this.replaceTemplateVars(target.itServiceFilter, options.scopedVars);\n    }\n\n    return this.zabbix.getITServices(itServiceFilter)\n    .then(itservices => {\n      itServices = itservices;\n      if (isOldVersion) {\n        itServices = _.filter(itServices, {'serviceid': target.itservice.serviceid});\n      }\n\n      itServiceIds = _.map(itServices, 'serviceid');\n      return itServiceIds;\n    })\n    .then(serviceids => {\n      return this.zabbix.getSLA(serviceids, timeRange);\n    })\n    .then(slaResponse => {\n      return _.map(itServiceIds, serviceid => {\n        let itservice = _.find(itServices, {'serviceid': serviceid});\n        return responseHandler.handleSLAResponse(itservice, target.slaProperty, slaResponse);\n      });\n    });\n  }\n\n  /**\n   * Test connection to Zabbix API\n   * @return {object} Connection status and Zabbix API version\n   */\n  testDatasource() {\n    let zabbixVersion;\n    return this.zabbix.getVersion()\n    .then(version => {\n      zabbixVersion = version;\n      return this.zabbix.login();\n    })\n    .then(() => {\n      if (this.enableDirectDBConnection) {\n        return this.zabbix.dbConnector.testSQLDataSource();\n      } else {\n        return Promise.resolve();\n      }\n    })\n    .then(() => {\n      return {\n        status: \"success\",\n        title: \"Success\",\n        message: \"Zabbix API version: \" + zabbixVersion\n      };\n    })\n    .catch(error => {\n      if (error instanceof ZabbixAPIError) {\n        return {\n          status: \"error\",\n          title: error.message,\n          message: error.message\n        };\n      } else if (error.data && error.data.message) {\n        return {\n          status: \"error\",\n          title: \"Connection failed\",\n          message: \"Connection failed: \" + error.data.message\n        };\n      } else {\n        return {\n          status: \"error\",\n          title: \"Connection failed\",\n          message: \"Could not connect to given url\"\n        };\n      }\n    });\n  }\n\n  ////////////////\n  // Templating //\n  ////////////////\n\n  /**\n   * Find metrics from templated request.\n   *\n   * @param  {string} query Query from Templating\n   * @return {string}       Metric name - group, host, app or item or list\n   *                        of metrics in \"{metric1,metcic2,...,metricN}\" format.\n   */\n  metricFindQuery(query) {\n    let result;\n    let parts = [];\n\n    // Split query. Query structure: group.host.app.item\n    _.each(utils.splitTemplateQuery(query), part => {\n      part = this.replaceTemplateVars(part, {});\n\n      // Replace wildcard to regex\n      if (part === '*') {\n        part = '/.*/';\n      }\n      parts.push(part);\n    });\n    let template = _.zipObject(['group', 'host', 'app', 'item'], parts);\n\n    // Get items\n    if (parts.length === 4) {\n      // Search for all items, even it's not belong to any application\n      if (template.app === '/.*/') {\n        template.app = '';\n      }\n      result = this.zabbix.getItems(template.group, template.host, template.app, template.item);\n    } else if (parts.length === 3) {\n      // Get applications\n      result = this.zabbix.getApps(template.group, template.host, template.app);\n    } else if (parts.length === 2) {\n      // Get hosts\n      result = this.zabbix.getHosts(template.group, template.host);\n    } else if (parts.length === 1) {\n      // Get groups\n      result = this.zabbix.getGroups(template.group);\n    } else {\n      result = Promise.resolve([]);\n    }\n\n    return result.then(metrics => {\n      return _.map(metrics, formatMetric);\n    });\n  }\n\n  /////////////////\n  // Annotations //\n  /////////////////\n\n  annotationQuery(options) {\n    var timeFrom = Math.ceil(dateMath.parse(options.rangeRaw.from) / 1000);\n    var timeTo = Math.ceil(dateMath.parse(options.rangeRaw.to) / 1000);\n    var annotation = options.annotation;\n    var showOkEvents = annotation.showOkEvents ? c.SHOW_ALL_EVENTS : c.SHOW_OK_EVENTS;\n\n    // Show all triggers\n    let triggersOptions = {\n      showTriggers: c.SHOW_ALL_TRIGGERS,\n      hideHostsInMaintenance: false\n    };\n\n    var getTriggers = this.zabbix.getTriggers(this.replaceTemplateVars(annotation.group, {}),\n                                              this.replaceTemplateVars(annotation.host, {}),\n                                              this.replaceTemplateVars(annotation.application, {}),\n                                              triggersOptions);\n\n    return getTriggers.then(triggers => {\n\n      // Filter triggers by description\n      let triggerName = this.replaceTemplateVars(annotation.trigger, {});\n      if (utils.isRegex(triggerName)) {\n        triggers = _.filter(triggers, trigger => {\n          return utils.buildRegex(triggerName).test(trigger.description);\n        });\n      } else if (triggerName) {\n        triggers = _.filter(triggers, trigger => {\n          return trigger.description === triggerName;\n        });\n      }\n\n      // Remove events below the chose severity\n      triggers = _.filter(triggers, trigger => {\n        return Number(trigger.priority) >= Number(annotation.minseverity);\n      });\n\n      var objectids = _.map(triggers, 'triggerid');\n      return this.zabbix\n        .getEvents(objectids, timeFrom, timeTo, showOkEvents)\n        .then(events => {\n          var indexedTriggers = _.keyBy(triggers, 'triggerid');\n\n          // Hide acknowledged events if option enabled\n          if (annotation.hideAcknowledged) {\n            events = _.filter(events, event => {\n              return !event.acknowledges.length;\n            });\n          }\n\n          return _.map(events, event => {\n            let tags;\n            if (annotation.showHostname) {\n              tags = _.map(event.hosts, 'name');\n            }\n\n            // Show event type (OK or Problem)\n            let title = Number(event.value) ? 'Problem' : 'OK';\n\n            let formatted_acknowledges = utils.formatAcknowledges(event.acknowledges);\n            return {\n              annotation: annotation,\n              time: event.clock * 1000,\n              title: title,\n              tags: tags,\n              text: indexedTriggers[event.objectid].description + formatted_acknowledges\n            };\n          });\n        });\n    });\n  }\n\n  /**\n   * Get triggers and its details for panel's targets\n   * Returns alert state ('ok' if no fired triggers, or 'alerting' if at least 1 trigger is fired)\n   * or empty object if no related triggers are finded.\n   */\n  alertQuery(options) {\n    let enabled_targets = filterEnabledTargets(options.targets);\n    let getPanelItems = _.map(enabled_targets, t => {\n      let target = _.cloneDeep(t);\n      this.replaceTargetVariables(target, options);\n      return this.zabbix.getItemsFromTarget(target, {itemtype: 'num'});\n    });\n\n    return Promise.all(getPanelItems)\n    .then(results => {\n      let items = _.flatten(results);\n      let itemids = _.map(items, 'itemid');\n\n      return this.zabbix.getAlerts(itemids);\n    })\n    .then(triggers => {\n      triggers = _.filter(triggers, trigger => {\n        return trigger.priority >= this.alertingMinSeverity;\n      });\n\n      if (!triggers || triggers.length === 0) {\n        return {};\n      }\n\n      let state = 'ok';\n\n      let firedTriggers = _.filter(triggers, {value: '1'});\n      if (firedTriggers.length) {\n        state = 'alerting';\n      }\n\n      let thresholds = _.map(triggers, trigger => {\n        return getTriggerThreshold(trigger.expression);\n      });\n\n      return {\n        panelId: options.panelId,\n        state: state,\n        thresholds: thresholds\n      };\n    });\n  }\n\n  // Replace template variables\n  replaceTargetVariables(target, options) {\n    let parts = ['group', 'host', 'application', 'item'];\n    _.forEach(parts, p => {\n      if (target[p] && target[p].filter) {\n        target[p].filter = this.replaceTemplateVars(target[p].filter, options.scopedVars);\n      }\n    });\n    target.textFilter = this.replaceTemplateVars(target.textFilter, options.scopedVars);\n\n    _.forEach(target.functions, func => {\n      func.params = _.map(func.params, param => {\n        if (typeof param === 'number') {\n          return +this.templateSrv.replace(param.toString(), options.scopedVars);\n        } else {\n          return this.templateSrv.replace(param, options.scopedVars);\n        }\n      });\n    });\n  }\n\n  isUseTrends(timeRange) {\n    let [timeFrom, timeTo] = timeRange;\n    let useTrendsFrom = Math.ceil(dateMath.parse('now-' + this.trendsFrom) / 1000);\n    let useTrendsRange = Math.ceil(utils.parseInterval(this.trendsRange) / 1000);\n    let useTrends = this.trends && (\n      (timeFrom <= useTrendsFrom) ||\n      (timeTo - timeFrom >= useTrendsRange)\n    );\n    return useTrends;\n  }\n}\n\nfunction bindFunctionDefs(functionDefs, category) {\n  var aggregationFunctions = _.map(metricFunctions.getCategories()[category], 'name');\n  var aggFuncDefs = _.filter(functionDefs, function(func) {\n    return _.includes(aggregationFunctions, func.def.name);\n  });\n\n  return _.map(aggFuncDefs, function(func) {\n    var funcInstance = metricFunctions.createFuncInstance(func.def, func.params);\n    return funcInstance.bindFunction(dataProcessor.metricFunctions);\n  });\n}\n\nfunction getConsolidateBy(target) {\n  let consolidateBy = 'avg';\n  let funcDef = _.find(target.functions, func => {\n    return func.def.name === 'consolidateBy';\n  });\n  if (funcDef && funcDef.params && funcDef.params.length) {\n    consolidateBy = funcDef.params[0];\n  }\n  return consolidateBy;\n}\n\nfunction downsampleSeries(timeseries_data, options) {\n  let defaultAgg = dataProcessor.aggregationFunctions['avg'];\n  let consolidateByFunc = dataProcessor.aggregationFunctions[options.consolidateBy] || defaultAgg;\n  return _.map(timeseries_data, timeseries => {\n    if (timeseries.datapoints.length > options.maxDataPoints) {\n      timeseries.datapoints = dataProcessor\n        .groupBy(options.interval, consolidateByFunc, timeseries.datapoints);\n    }\n    return timeseries;\n  });\n}\n\nfunction formatMetric(metricObj) {\n  return {\n    text: metricObj.name,\n    expandable: false\n  };\n}\n\n/**\n * Custom formatter for template variables.\n * Default Grafana \"regex\" formatter returns\n * value1|value2\n * This formatter returns\n * (value1|value2)\n * This format needed for using in complex regex with\n * template variables, for example\n * /CPU $cpu_item.*time/ where $cpu_item is system,user,iowait\n */\nfunction zabbixTemplateFormat(value) {\n  if (typeof value === 'string') {\n    return utils.escapeRegex(value);\n  }\n\n  var escapedValues = _.map(value, utils.escapeRegex);\n  return '(' + escapedValues.join('|') + ')';\n}\n\nfunction zabbixItemIdsTemplateFormat(value) {\n  if (typeof value === 'string') {\n    return value;\n  }\n  return value.join(',');\n}\n\n/**\n * If template variables are used in request, replace it using regex format\n * and wrap with '/' for proper multi-value work. Example:\n * $variable selected as a, b, c\n * We use filter $variable\n * $variable    -> a|b|c    -> /a|b|c/\n * /$variable/  -> /a|b|c/  -> /a|b|c/\n */\nfunction replaceTemplateVars(templateSrv, target, scopedVars) {\n  var replacedTarget = templateSrv.replace(target, scopedVars, zabbixTemplateFormat);\n  if (target !== replacedTarget && !utils.isRegex(replacedTarget)) {\n    replacedTarget = '/^' + replacedTarget + '$/';\n  }\n  return replacedTarget;\n}\n\n// Apply function one by one:\n// sequence([a(), b(), c()]) = c(b(a()));\nfunction sequence(funcsArray) {\n  return function(result) {\n    for (var i = 0; i < funcsArray.length; i++) {\n      result = funcsArray[i].call(this, result);\n    }\n    return result;\n  };\n}\n\nfunction filterEnabledTargets(targets) {\n  return _.filter(targets, target => {\n    return !(target.hide || !target.group || !target.host || !target.item);\n  });\n}\n\nfunction getTriggerThreshold(expression) {\n  let thresholdPattern = /.*[<>]([\\d\\.]+)/;\n  let finded_thresholds = expression.match(thresholdPattern);\n  if (finded_thresholds && finded_thresholds.length >= 2) {\n    let threshold = finded_thresholds[1];\n    threshold = Number(threshold);\n    return threshold;\n  } else {\n    return null;\n  }\n}\n\nexport {ZabbixAPIDatasource, zabbixTemplateFormat};\n\n// Fix for backward compatibility with lodash 2.4\nif (!_.includes) {_.includes = _.contains;}\nif (!_.keyBy) {_.keyBy = _.indexBy;}\n"]}
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_ from 'lodash';\nimport * as dateMath from 'app/core/utils/datemath';\nimport * as utils from './utils';\nimport * as migrations from './migrations';\nimport * as metricFunctions from './metricFunctions';\nimport * as c from './constants';\nimport dataProcessor from './dataProcessor';\nimport responseHandler from './responseHandler';\nimport './zabbix.js';\nimport './zabbixAlerting.service.js';\nimport {ZabbixAPIError} from './zabbixAPICore.service.js';\n\nclass ZabbixAPIDatasource {\n\n  /** @ngInject */\n  constructor(instanceSettings, templateSrv, alertSrv, dashboardSrv, zabbixAlertingSrv, Zabbix) {\n    this.templateSrv = templateSrv;\n    this.alertSrv = alertSrv;\n    this.dashboardSrv = dashboardSrv;\n    this.zabbixAlertingSrv = zabbixAlertingSrv;\n\n    // Use custom format for template variables\n    this.replaceTemplateVars = _.partial(replaceTemplateVars, this.templateSrv);\n\n    // General data source settings\n    this.name             = instanceSettings.name;\n    this.url              = instanceSettings.url;\n    this.basicAuth        = instanceSettings.basicAuth;\n    this.withCredentials  = instanceSettings.withCredentials;\n\n    const jsonData = instanceSettings.jsonData;\n\n    // Zabbix API credentials\n    this.username         = jsonData.username;\n    this.password         = jsonData.password;\n\n    // Use trends instead history since specified time\n    this.trends           = jsonData.trends;\n    this.trendsFrom       = jsonData.trendsFrom || '7d';\n    this.trendsRange      = jsonData.trendsRange || '4d';\n\n    // Set cache update interval\n    var ttl = jsonData.cacheTTL || '1h';\n    this.cacheTTL = utils.parseInterval(ttl);\n\n    // Alerting options\n    this.alertingEnabled =     jsonData.alerting;\n    this.addThresholds =       jsonData.addThresholds;\n    this.alertingMinSeverity = jsonData.alertingMinSeverity || c.SEV_WARNING;\n\n    // Direct DB Connection options\n    let dbConnectionOptions = jsonData.dbConnection || {};\n    this.enableDirectDBConnection = dbConnectionOptions.enable;\n    this.sqlDatasourceId = dbConnectionOptions.datasourceId;\n\n    let zabbixOptions = {\n      username: this.username,\n      password: this.password,\n      basicAuth: this.basicAuth,\n      withCredentials: this.withCredentials,\n      cacheTTL: this.cacheTTL,\n      enableDirectDBConnection: this.enableDirectDBConnection,\n      sqlDatasourceId: this.sqlDatasourceId\n    };\n\n    this.zabbix = new Zabbix(this.url, zabbixOptions);\n  }\n\n  ////////////////////////\n  // Datasource methods //\n  ////////////////////////\n\n  /**\n   * Query panel data. Calls for each panel in dashboard.\n   * @param  {Object} options   Contains time range, targets and other info.\n   * @return {Object} Grafana metrics object with timeseries data for each target.\n   */\n  query(options) {\n    // Get alerts for current panel\n    if (this.alertingEnabled) {\n      this.alertQuery(options).then(alert => {\n        this.zabbixAlertingSrv.setPanelAlertState(options.panelId, alert.state);\n\n        this.zabbixAlertingSrv.removeZabbixThreshold(options.panelId);\n        if (this.addThresholds) {\n          _.forEach(alert.thresholds, threshold => {\n            this.zabbixAlertingSrv.setPanelThreshold(options.panelId, threshold);\n          });\n        }\n      });\n    }\n\n    // Create request for each target\n    let promises = _.map(options.targets, t => {\n      // Don't request undefined and hidden targets\n      if (t.hide) {\n        return [];\n      }\n\n      let timeFrom = Math.ceil(dateMath.parse(options.range.from) / 1000);\n      let timeTo = Math.ceil(dateMath.parse(options.range.to) / 1000);\n\n      // Prevent changes of original object\n      let target = _.cloneDeep(t);\n      this.replaceTargetVariables(target, options);\n\n      // Apply Time-related functions (timeShift(), etc)\n      let timeFunctions = bindFunctionDefs(target.functions, 'Time');\n      if (timeFunctions.length) {\n        const [time_from, time_to] = sequence(timeFunctions)([timeFrom, timeTo]);\n        timeFrom = time_from;\n        timeTo = time_to;\n      }\n      let timeRange = [timeFrom, timeTo];\n\n      let useTrends = this.isUseTrends(timeRange);\n\n      // Metrics or Text query mode\n      if (!target.mode || target.mode === c.MODE_METRICS ||\n          target.mode === c.MODE_TEXT || target.mode === c.MODE_ITEMID) {\n        // Migrate old targets\n        target = migrations.migrate(target);\n\n        // Don't request undefined and hidden targets\n        if (target.hide || !target.group || !target.host || !target.item) {\n          return [];\n        }\n\n        if (!target.mode || target.mode === c.MODE_METRICS) {\n          return this.queryNumericData(target, timeRange, useTrends, options);\n        } else if (target.mode === c.MODE_TEXT) {\n          return this.queryTextData(target, timeRange);\n        } else if (target.mode === c.MODE_ITEMID) {\n          return this.queryItemIdData(target, timeRange, useTrends, options);\n        }\n      } else if (target.mode === c.MODE_ITSERVICE) {\n        // IT services mode\n        return this.queryITServiceData(target, timeRange, options);\n      }\n    });\n\n    // Data for panel (all targets)\n    return Promise.all(_.flatten(promises))\n      .then(_.flatten)\n      .then(data => {\n        return { data: data };\n      });\n  }\n\n  /**\n   * Query target data for Metrics mode\n   */\n  queryNumericData(target, timeRange, useTrends, options) {\n    let getItemOptions = {\n      itemtype: 'num'\n    };\n    return this.zabbix.getItemsFromTarget(target, getItemOptions)\n    .then(items => {\n      return this.queryNumericDataForItems(items, target, timeRange, useTrends, options);\n    });\n  }\n\n  /**\n   * Query history for numeric items\n   */\n  queryNumericDataForItems(items, target, timeRange, useTrends, options) {\n    let [timeFrom, timeTo] = timeRange;\n    let getHistoryPromise;\n    options.consolidateBy = getConsolidateBy(target);\n\n    if (useTrends) {\n      if (this.enableDirectDBConnection) {\n        getHistoryPromise = this.zabbix.getTrendsDB(items, timeFrom, timeTo, options)\n        .then(history => this.zabbix.dbConnector.handleGrafanaTSResponse(history, items));\n      } else {\n        let valueType = this.getTrendValueType(target);\n        getHistoryPromise = this.zabbix.getTrend(items, timeFrom, timeTo)\n        .then(history => responseHandler.handleTrends(history, items, valueType))\n        .then(timeseries => {\n          // Sort trend data, issue #202\n          _.forEach(timeseries, series => {\n            series.datapoints = _.sortBy(series.datapoints, point => point[c.DATAPOINT_TS]);\n          });\n          return timeseries;\n        });\n      }\n    } else {\n      // Use history\n      if (this.enableDirectDBConnection) {\n        getHistoryPromise = this.zabbix.getHistoryDB(items, timeFrom, timeTo, options)\n        .then(history => this.zabbix.dbConnector.handleGrafanaTSResponse(history, items));\n      } else {\n        getHistoryPromise = this.zabbix.getHistory(items, timeFrom, timeTo)\n        .then(history => responseHandler.handleHistory(history, items));\n      }\n    }\n\n    return getHistoryPromise\n    .then(timeseries => this.applyDataProcessingFunctions(timeseries, target))\n    .then(timeseries => downsampleSeries(timeseries, options))\n    .catch(error => {\n      console.log(error);\n      return [];\n    });\n  }\n\n  getTrendValueType(target) {\n    // Find trendValue() function and get specified trend value\n    var trendFunctions = _.map(metricFunctions.getCategories()['Trends'], 'name');\n    var trendValueFunc = _.find(target.functions, func => {\n      return _.includes(trendFunctions, func.def.name);\n    });\n    return trendValueFunc ? trendValueFunc.params[0] : \"avg\";\n  }\n\n  applyDataProcessingFunctions(timeseries_data, target) {\n    let transformFunctions   = bindFunctionDefs(target.functions, 'Transform');\n    let aggregationFunctions = bindFunctionDefs(target.functions, 'Aggregate');\n    let filterFunctions      = bindFunctionDefs(target.functions, 'Filter');\n    let aliasFunctions       = bindFunctionDefs(target.functions, 'Alias');\n\n    // Apply transformation functions\n    timeseries_data = _.cloneDeep(_.map(timeseries_data, timeseries => {\n      timeseries.datapoints = sequence(transformFunctions)(timeseries.datapoints);\n      return timeseries;\n    }));\n\n    // Apply filter functions\n    if (filterFunctions.length) {\n      timeseries_data = sequence(filterFunctions)(timeseries_data);\n    }\n\n    // Apply aggregations\n    if (aggregationFunctions.length) {\n      let dp = _.map(timeseries_data, 'datapoints');\n      dp = sequence(aggregationFunctions)(dp);\n\n      let aggFuncNames = _.map(metricFunctions.getCategories()['Aggregate'], 'name');\n      let lastAgg = _.findLast(target.functions, func => {\n        return _.includes(aggFuncNames, func.def.name);\n      });\n\n      timeseries_data = [{\n        target: lastAgg.text,\n        datapoints: dp\n      }];\n    }\n\n    // Apply alias functions\n    _.forEach(timeseries_data, sequence(aliasFunctions));\n\n    // Apply Time-related functions (timeShift(), etc)\n    // Find timeShift() function and get specified trend value\n    this.applyTimeShiftFunction(timeseries_data, target);\n\n    return timeseries_data;\n  }\n\n  applyTimeShiftFunction(timeseries_data, target) {\n    // Find timeShift() function and get specified interval\n    let timeShiftFunc = _.find(target.functions, (func) => {\n      return func.def.name === 'timeShift';\n    });\n    if (timeShiftFunc) {\n      let shift = timeShiftFunc.params[0];\n      _.forEach(timeseries_data, (series) => {\n        series.datapoints = dataProcessor.unShiftTimeSeries(shift, series.datapoints);\n      });\n    }\n  }\n\n  /**\n   * Query target data for Text mode\n   */\n  queryTextData(target, timeRange) {\n    let [timeFrom, timeTo] = timeRange;\n    let options = {\n      itemtype: 'text'\n    };\n    return this.zabbix.getItemsFromTarget(target, options)\n      .then(items => {\n        if (items.length) {\n          return this.zabbix.getHistory(items, timeFrom, timeTo)\n          .then(history => {\n            return responseHandler.handleText(history, items, target);\n          });\n        } else {\n          return Promise.resolve([]);\n        }\n      });\n  }\n\n  /**\n   * Query target data for Item ID mode\n   */\n  queryItemIdData(target, timeRange, useTrends, options) {\n    let itemids = target.itemids;\n    itemids = this.templateSrv.replace(itemids, options.scopedVars, zabbixItemIdsTemplateFormat);\n    itemids = _.map(itemids.split(','), itemid => itemid.trim());\n\n    if (!itemids) {\n      return [];\n    }\n\n    return this.zabbix.getItemsByIDs(itemids)\n    .then(items => {\n      return this.queryNumericDataForItems(items, target, timeRange, useTrends, options);\n    });\n  }\n\n  /**\n   * Query target data for IT Services mode\n   */\n  queryITServiceData(target, timeRange, options) {\n    // Don't show undefined and hidden targets\n    if (target.hide || (!target.itservice && !target.itServiceFilter) || !target.slaProperty) {\n      return [];\n    }\n\n    let itServiceIds = [];\n    let itServices = [];\n    let itServiceFilter;\n    let isOldVersion = target.itservice && !target.itServiceFilter;\n\n    if (isOldVersion) {\n      // Backward compatibility\n      itServiceFilter = '/.*/';\n    } else {\n      itServiceFilter = this.replaceTemplateVars(target.itServiceFilter, options.scopedVars);\n    }\n\n    return this.zabbix.getITServices(itServiceFilter)\n    .then(itservices => {\n      itServices = itservices;\n      if (isOldVersion) {\n        itServices = _.filter(itServices, {'serviceid': target.itservice.serviceid});\n      }\n\n      itServiceIds = _.map(itServices, 'serviceid');\n      return itServiceIds;\n    })\n    .then(serviceids => {\n      return this.zabbix.getSLA(serviceids, timeRange);\n    })\n    .then(slaResponse => {\n      return _.map(itServiceIds, serviceid => {\n        let itservice = _.find(itServices, {'serviceid': serviceid});\n        return responseHandler.handleSLAResponse(itservice, target.slaProperty, slaResponse);\n      });\n    });\n  }\n\n  /**\n   * Test connection to Zabbix API\n   * @return {object} Connection status and Zabbix API version\n   */\n  testDatasource() {\n    let zabbixVersion;\n    return this.zabbix.getVersion()\n    .then(version => {\n      zabbixVersion = version;\n      return this.zabbix.login();\n    })\n    .then(() => {\n      if (this.enableDirectDBConnection) {\n        return this.zabbix.dbConnector.testSQLDataSource();\n      } else {\n        return Promise.resolve();\n      }\n    })\n    .then(() => {\n      return {\n        status: \"success\",\n        title: \"Success\",\n        message: \"Zabbix API version: \" + zabbixVersion\n      };\n    })\n    .catch(error => {\n      if (error instanceof ZabbixAPIError) {\n        return {\n          status: \"error\",\n          title: error.message,\n          message: error.message\n        };\n      } else if (error.data && error.data.message) {\n        return {\n          status: \"error\",\n          title: \"Connection failed\",\n          message: \"Connection failed: \" + error.data.message\n        };\n      } else {\n        return {\n          status: \"error\",\n          title: \"Connection failed\",\n          message: \"Could not connect to given url\"\n        };\n      }\n    });\n  }\n\n  ////////////////\n  // Templating //\n  ////////////////\n\n  /**\n   * Find metrics from templated request.\n   *\n   * @param  {string} query Query from Templating\n   * @return {string}       Metric name - group, host, app or item or list\n   *                        of metrics in \"{metric1,metcic2,...,metricN}\" format.\n   */\n  metricFindQuery(query) {\n    let result;\n    let parts = [];\n\n    // Split query. Query structure: group.host.app.item\n    _.each(utils.splitTemplateQuery(query), part => {\n      part = this.replaceTemplateVars(part, {});\n\n      // Replace wildcard to regex\n      if (part === '*') {\n        part = '/.*/';\n      }\n      parts.push(part);\n    });\n    let template = _.zipObject(['group', 'host', 'app', 'item'], parts);\n\n    // Get items\n    if (parts.length === 4) {\n      // Search for all items, even it's not belong to any application\n      if (template.app === '/.*/') {\n        template.app = '';\n      }\n      result = this.zabbix.getItems(template.group, template.host, template.app, template.item);\n    } else if (parts.length === 3) {\n      // Get applications\n      result = this.zabbix.getApps(template.group, template.host, template.app);\n    } else if (parts.length === 2) {\n      // Get hosts\n      result = this.zabbix.getHosts(template.group, template.host);\n    } else if (parts.length === 1) {\n      // Get groups\n      result = this.zabbix.getGroups(template.group);\n    } else {\n      result = Promise.resolve([]);\n    }\n\n    return result.then(metrics => {\n      return _.map(metrics, formatMetric);\n    });\n  }\n\n  /////////////////\n  // Annotations //\n  /////////////////\n\n  annotationQuery(options) {\n    var timeFrom = Math.ceil(dateMath.parse(options.rangeRaw.from) / 1000);\n    var timeTo = Math.ceil(dateMath.parse(options.rangeRaw.to) / 1000);\n    var annotation = options.annotation;\n    var showOkEvents = annotation.showOkEvents ? c.SHOW_ALL_EVENTS : c.SHOW_OK_EVENTS;\n\n    // Show all triggers\n    let triggersOptions = {\n      showTriggers: c.SHOW_ALL_TRIGGERS,\n      hideHostsInMaintenance: false\n    };\n\n    var getTriggers = this.zabbix.getTriggers(this.replaceTemplateVars(annotation.group, {}),\n                                              this.replaceTemplateVars(annotation.host, {}),\n                                              this.replaceTemplateVars(annotation.application, {}),\n                                              triggersOptions);\n\n    return getTriggers.then(triggers => {\n\n      // Filter triggers by description\n      let triggerName = this.replaceTemplateVars(annotation.trigger, {});\n      if (utils.isRegex(triggerName)) {\n        triggers = _.filter(triggers, trigger => {\n          return utils.buildRegex(triggerName).test(trigger.description);\n        });\n      } else if (triggerName) {\n        triggers = _.filter(triggers, trigger => {\n          return trigger.description === triggerName;\n        });\n      }\n\n      // Remove events below the chose severity\n      triggers = _.filter(triggers, trigger => {\n        return Number(trigger.priority) >= Number(annotation.minseverity);\n      });\n\n      var objectids = _.map(triggers, 'triggerid');\n      return this.zabbix\n        .getEvents(objectids, timeFrom, timeTo, showOkEvents)\n        .then(events => {\n          var indexedTriggers = _.keyBy(triggers, 'triggerid');\n\n          // Hide acknowledged events if option enabled\n          if (annotation.hideAcknowledged) {\n            events = _.filter(events, event => {\n              return !event.acknowledges.length;\n            });\n          }\n\n          return _.map(events, event => {\n            let tags;\n            if (annotation.showHostname) {\n              tags = _.map(event.hosts, 'name');\n            }\n\n            // Show event type (OK or Problem)\n            let title = Number(event.value) ? 'Problem' : 'OK';\n\n            let formatted_acknowledges = utils.formatAcknowledges(event.acknowledges);\n            return {\n              annotation: annotation,\n              time: event.clock * 1000,\n              title: title,\n              tags: tags,\n              text: indexedTriggers[event.objectid].description + formatted_acknowledges\n            };\n          });\n        });\n    });\n  }\n\n  /**\n   * Get triggers and its details for panel's targets\n   * Returns alert state ('ok' if no fired triggers, or 'alerting' if at least 1 trigger is fired)\n   * or empty object if no related triggers are finded.\n   */\n  alertQuery(options) {\n    let enabled_targets = filterEnabledTargets(options.targets);\n    let getPanelItems = _.map(enabled_targets, t => {\n      let target = _.cloneDeep(t);\n      this.replaceTargetVariables(target, options);\n      return this.zabbix.getItemsFromTarget(target, {itemtype: 'num'});\n    });\n\n    return Promise.all(getPanelItems)\n    .then(results => {\n      let items = _.flatten(results);\n      let itemids = _.map(items, 'itemid');\n\n      return this.zabbix.getAlerts(itemids);\n    })\n    .then(triggers => {\n      triggers = _.filter(triggers, trigger => {\n        return trigger.priority >= this.alertingMinSeverity;\n      });\n\n      if (!triggers || triggers.length === 0) {\n        return {};\n      }\n\n      let state = 'ok';\n\n      let firedTriggers = _.filter(triggers, {value: '1'});\n      if (firedTriggers.length) {\n        state = 'alerting';\n      }\n\n      let thresholds = _.map(triggers, trigger => {\n        return getTriggerThreshold(trigger.expression);\n      });\n\n      return {\n        panelId: options.panelId,\n        state: state,\n        thresholds: thresholds\n      };\n    });\n  }\n\n  // Replace template variables\n  replaceTargetVariables(target, options) {\n    let parts = ['group', 'host', 'application', 'item'];\n    _.forEach(parts, p => {\n      if (target[p] && target[p].filter) {\n        target[p].filter = this.replaceTemplateVars(target[p].filter, options.scopedVars);\n      }\n    });\n    target.textFilter = this.replaceTemplateVars(target.textFilter, options.scopedVars);\n\n    _.forEach(target.functions, func => {\n      func.params = _.map(func.params, param => {\n        if (typeof param === 'number') {\n          return +this.templateSrv.replace(param.toString(), options.scopedVars);\n        } else {\n          return this.templateSrv.replace(param, options.scopedVars);\n        }\n      });\n    });\n  }\n\n  isUseTrends(timeRange) {\n    let [timeFrom, timeTo] = timeRange;\n    let useTrendsFrom = Math.ceil(dateMath.parse('now-' + this.trendsFrom) / 1000);\n    let useTrendsRange = Math.ceil(utils.parseInterval(this.trendsRange) / 1000);\n    let useTrends = this.trends && (\n      (timeFrom <= useTrendsFrom) ||\n      (timeTo - timeFrom >= useTrendsRange)\n    );\n    return useTrends;\n  }\n}\n\nfunction bindFunctionDefs(functionDefs, category) {\n  var aggregationFunctions = _.map(metricFunctions.getCategories()[category], 'name');\n  var aggFuncDefs = _.filter(functionDefs, function(func) {\n    return _.includes(aggregationFunctions, func.def.name);\n  });\n\n  return _.map(aggFuncDefs, function(func) {\n    var funcInstance = metricFunctions.createFuncInstance(func.def, func.params);\n    return funcInstance.bindFunction(dataProcessor.metricFunctions);\n  });\n}\n\nfunction getConsolidateBy(target) {\n  let consolidateBy = 'avg';\n  let funcDef = _.find(target.functions, func => {\n    return func.def.name === 'consolidateBy';\n  });\n  if (funcDef && funcDef.params && funcDef.params.length) {\n    consolidateBy = funcDef.params[0];\n  }\n  return consolidateBy;\n}\n\nfunction downsampleSeries(timeseries_data, options) {\n  let defaultAgg = dataProcessor.aggregationFunctions['avg'];\n  let consolidateByFunc = dataProcessor.aggregationFunctions[options.consolidateBy] || defaultAgg;\n  return _.map(timeseries_data, timeseries => {\n    if (timeseries.datapoints.length > options.maxDataPoints) {\n      timeseries.datapoints = dataProcessor\n        .groupBy(options.interval, consolidateByFunc, timeseries.datapoints);\n    }\n    return timeseries;\n  });\n}\n\nfunction formatMetric(metricObj) {\n  return {\n    text: metricObj.name,\n    expandable: false\n  };\n}\n\n/**\n * Custom formatter for template variables.\n * Default Grafana \"regex\" formatter returns\n * value1|value2\n * This formatter returns\n * (value1|value2)\n * This format needed for using in complex regex with\n * template variables, for example\n * /CPU $cpu_item.*time/ where $cpu_item is system,user,iowait\n */\nfunction zabbixTemplateFormat(value) {\n  if (typeof value === 'string') {\n    return utils.escapeRegex(value);\n  }\n\n  var escapedValues = _.map(value, utils.escapeRegex);\n  return '(' + escapedValues.join('|') + ')';\n}\n\nfunction zabbixItemIdsTemplateFormat(value) {\n  if (typeof value === 'string') {\n    return value;\n  }\n  return value.join(',');\n}\n\n/**\n * If template variables are used in request, replace it using regex format\n * and wrap with '/' for proper multi-value work. Example:\n * $variable selected as a, b, c\n * We use filter $variable\n * $variable    -> a|b|c    -> /a|b|c/\n * /$variable/  -> /a|b|c/  -> /a|b|c/\n */\nfunction replaceTemplateVars(templateSrv, target, scopedVars) {\n  var replacedTarget = templateSrv.replace(target, scopedVars, zabbixTemplateFormat);\n  if (target !== replacedTarget && !utils.isRegex(replacedTarget)) {\n    replacedTarget = '/^' + replacedTarget + '$/';\n  }\n  return replacedTarget;\n}\n\n// Apply function one by one:\n// sequence([a(), b(), c()]) = c(b(a()));\nfunction sequence(funcsArray) {\n  return function(result) {\n    for (var i = 0; i < funcsArray.length; i++) {\n      result = funcsArray[i].call(this, result);\n    }\n    return result;\n  };\n}\n\nfunction filterEnabledTargets(targets) {\n  return _.filter(targets, target => {\n    return !(target.hide || !target.group || !target.host || !target.item);\n  });\n}\n\nfunction getTriggerThreshold(expression) {\n  let thresholdPattern = /.*[<>]([\\d\\.]+)/;\n  let finded_thresholds = expression.match(thresholdPattern);\n  if (finded_thresholds && finded_thresholds.length >= 2) {\n    let threshold = finded_thresholds[1];\n    threshold = Number(threshold);\n    return threshold;\n  } else {\n    return null;\n  }\n}\n\nexport {ZabbixAPIDatasource, zabbixTemplateFormat};\n\n// Fix for backward compatibility with lodash 2.4\nif (!_.includes) {_.includes = _.contains;}\nif (!_.keyBy) {_.keyBy = _.indexBy;}\n"]}
\ No newline at end of file
diff --git a/dist/test/datasource-zabbix/datasource.js b/dist/test/datasource-zabbix/datasource.js
index 09082e4..fd6f6be 100644
--- a/dist/test/datasource-zabbix/datasource.js
+++ b/dist/test/datasource-zabbix/datasource.js
@@ -73,26 +73,28 @@ var ZabbixAPIDatasource = function () {
     this.basicAuth = instanceSettings.basicAuth;
     this.withCredentials = instanceSettings.withCredentials;
 
+    var jsonData = instanceSettings.jsonData;
+
     // Zabbix API credentials
-    this.username = instanceSettings.jsonData.username;
-    this.password = instanceSettings.jsonData.password;
+    this.username = jsonData.username;
+    this.password = jsonData.password;
 
     // Use trends instead history since specified time
-    this.trends = instanceSettings.jsonData.trends;
-    this.trendsFrom = instanceSettings.jsonData.trendsFrom || '7d';
-    this.trendsRange = instanceSettings.jsonData.trendsRange || '4d';
+    this.trends = jsonData.trends;
+    this.trendsFrom = jsonData.trendsFrom || '7d';
+    this.trendsRange = jsonData.trendsRange || '4d';
 
     // Set cache update interval
-    var ttl = instanceSettings.jsonData.cacheTTL || '1h';
+    var ttl = jsonData.cacheTTL || '1h';
     this.cacheTTL = utils.parseInterval(ttl);
 
     // Alerting options
-    this.alertingEnabled = instanceSettings.jsonData.alerting;
-    this.addThresholds = instanceSettings.jsonData.addThresholds;
-    this.alertingMinSeverity = instanceSettings.jsonData.alertingMinSeverity || c.SEV_WARNING;
+    this.alertingEnabled = jsonData.alerting;
+    this.addThresholds = jsonData.addThresholds;
+    this.alertingMinSeverity = jsonData.alertingMinSeverity || c.SEV_WARNING;
 
     // Direct DB Connection options
-    var dbConnectionOptions = instanceSettings.jsonData.dbConnection || {};
+    var dbConnectionOptions = jsonData.dbConnection || {};
     this.enableDirectDBConnection = dbConnectionOptions.enable;
     this.sqlDatasourceId = dbConnectionOptions.datasourceId;
 
diff --git a/src/datasource-zabbix/datasource.js b/src/datasource-zabbix/datasource.js
index 2c50e7e..a156d9b 100644
--- a/src/datasource-zabbix/datasource.js
+++ b/src/datasource-zabbix/datasource.js
@@ -28,26 +28,28 @@ class ZabbixAPIDatasource {
     this.basicAuth        = instanceSettings.basicAuth;
     this.withCredentials  = instanceSettings.withCredentials;
 
+    const jsonData = instanceSettings.jsonData;
+
     // Zabbix API credentials
-    this.username         = instanceSettings.jsonData.username;
-    this.password         = instanceSettings.jsonData.password;
+    this.username         = jsonData.username;
+    this.password         = jsonData.password;
 
     // Use trends instead history since specified time
-    this.trends           = instanceSettings.jsonData.trends;
-    this.trendsFrom       = instanceSettings.jsonData.trendsFrom || '7d';
-    this.trendsRange      = instanceSettings.jsonData.trendsRange || '4d';
+    this.trends           = jsonData.trends;
+    this.trendsFrom       = jsonData.trendsFrom || '7d';
+    this.trendsRange      = jsonData.trendsRange || '4d';
 
     // Set cache update interval
-    var ttl = instanceSettings.jsonData.cacheTTL || '1h';
+    var ttl = jsonData.cacheTTL || '1h';
     this.cacheTTL = utils.parseInterval(ttl);
 
     // Alerting options
-    this.alertingEnabled = instanceSettings.jsonData.alerting;
-    this.addThresholds = instanceSettings.jsonData.addThresholds;
-    this.alertingMinSeverity = instanceSettings.jsonData.alertingMinSeverity || c.SEV_WARNING;
+    this.alertingEnabled =     jsonData.alerting;
+    this.addThresholds =       jsonData.addThresholds;
+    this.alertingMinSeverity = jsonData.alertingMinSeverity || c.SEV_WARNING;
 
     // Direct DB Connection options
-    let dbConnectionOptions = instanceSettings.jsonData.dbConnection || {};
+    let dbConnectionOptions = jsonData.dbConnection || {};
     this.enableDirectDBConnection = dbConnectionOptions.enable;
     this.sqlDatasourceId = dbConnectionOptions.datasourceId;