mysql-connector: imlement getTrends()

dist/datasource-zabbix/datasource.js

@@ -355,6 +355,11 @@ System.register(['lodash', 'app/core/utils/datemath', './utils', './migrations',
               options.consolidateBy = getConsolidateBy(target);
 
               if (useTrends) {
+                if (_this2.enableDirectDBConnection) {
+                  getHistoryPromise = _this2.zabbix.getTrend(items, timeFrom, timeTo, options).then(function (history) {
+                    return _this2.zabbix.dbConnector.handleGrafanaTSResponse(history, items);
+                  });
+                } else {
                   var valueType = _this2.getTrendValueType(target);
                   getHistoryPromise = _this2.zabbix.getTrend(items, timeFrom, timeTo).then(function (history) {
                     return responseHandler.handleTrends(history, items, valueType);
@@ -365,9 +370,9 @@ System.register(['lodash', 'app/core/utils/datemath', './utils', './migrations',
                         return point[c.DATAPOINT_TS];
                       });
                     });
-
                     return timeseries;
                   });
+                }
               } else {
                 // Use history
                 if (_this2.enableDirectDBConnection) {

dist/datasource-zabbix/zabbix.js

@@ -68,6 +68,7 @@ System.register(['angular', 'lodash', './utils', './zabbixAPI.service.js', './za
         if (enableDirectDBConnection) {
           this.dbConnector = new ZabbixDBConnector(sqlDatasourceId);
           this.getHistory = this.dbConnector.getHistory.bind(this.dbConnector);
+          this.getTrend = this.dbConnector.getTrends.bind(this.dbConnector);
         }
       }
 

dist/datasource-zabbix/zabbixDBConnector.js

@@ -3,7 +3,7 @@
 System.register(['angular', 'lodash'], function (_export, _context) {
   "use strict";
 
-  var angular, _, _createClass, DEFAULT_QUERY_LIMIT, HISTORY_TO_TABLE_MAP, consolidateByFunc;
+  var angular, _, _createClass, DEFAULT_QUERY_LIMIT, HISTORY_TO_TABLE_MAP, TREND_TO_TABLE_MAP, consolidateByFunc, consolidateByTrendColumns;
 
   function _classCallCheck(instance, Constructor) {
     if (!(instance instanceof Constructor)) {
@@ -71,6 +71,37 @@ System.register(['angular', 'lodash'], function (_export, _context) {
           });
         }
       }, {
+        key: 'getTrends',
+        value: function getTrends(items, timeFrom, timeTill, options) {
+          var _this2 = this;
+
+          var intervalMs = options.intervalMs,
+              consolidateBy = options.consolidateBy;
+
+          var intervalSec = Math.ceil(intervalMs / 1000);
+
+          consolidateBy = consolidateBy || 'avg';
+          var aggFunction = consolidateByFunc[consolidateBy];
+
+          // Group items by value type and perform request for each value type
+          var grouped_items = _.groupBy(items, 'value_type');
+          var promises = _.map(grouped_items, function (items, value_type) {
+            var itemids = _.map(items, 'itemid').join(', ');
+            var table = TREND_TO_TABLE_MAP[value_type];
+            var valueColumn = _.includes(['avg', 'min', 'max'], consolidateBy) ? consolidateBy : 'avg';
+            valueColumn = consolidateByTrendColumns[valueColumn];
+
+            var query = '\n          SELECT itemid AS metric, clock AS time_sec, ' + aggFunction + '(' + valueColumn + ') as value\n            FROM ' + table + '\n            WHERE itemid IN (' + itemids + ')\n              AND clock > ' + timeFrom + ' AND clock < ' + timeTill + '\n            GROUP BY time_sec DIV ' + intervalSec + ', metric\n        ';
+
+            query = compactSQLQuery(query);
+            return _this2.invokeSQLQuery(query);
+          });
+
+          return Promise.all(promises).then(function (results) {
+            return _.flatten(results);
+          });
+        }
+      }, {
         key: 'handleGrafanaTSResponse',
         value: function handleGrafanaTSResponse(history, items) {
           var addHostName = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;
@@ -170,6 +201,10 @@ System.register(['angular', 'lodash'], function (_export, _context) {
         '3': 'history_uint',
         '4': 'history_text'
       };
+      TREND_TO_TABLE_MAP = {
+        '0': 'trends',
+        '3': 'trends_uint'
+      };
       consolidateByFunc = {
         'avg': 'AVG',
         'min': 'MIN',
@@ -177,6 +212,11 @@ System.register(['angular', 'lodash'], function (_export, _context) {
         'sum': 'SUM',
         'count': 'COUNT'
       };
+      consolidateByTrendColumns = {
+        'avg': 'value_avg',
+        'min': 'value_min',
+        'max': 'value_max'
+      };
       angular.module('grafana.services').factory('ZabbixDBConnector', ZabbixDBConnectorFactory);
     }
   };

dist/test/datasource-zabbix/datasource.js

@@ -215,6 +215,11 @@ var ZabbixAPIDatasource = function () {
         options.consolidateBy = getConsolidateBy(target);
 
         if (useTrends) {
+          if (_this2.enableDirectDBConnection) {
+            getHistoryPromise = _this2.zabbix.getTrend(items, timeFrom, timeTo, options).then(function (history) {
+              return _this2.zabbix.dbConnector.handleGrafanaTSResponse(history, items);
+            });
+          } else {
             var valueType = _this2.getTrendValueType(target);
             getHistoryPromise = _this2.zabbix.getTrend(items, timeFrom, timeTo).then(function (history) {
               return _responseHandler2.default.handleTrends(history, items, valueType);
@@ -225,9 +230,9 @@ var ZabbixAPIDatasource = function () {
                   return point[c.DATAPOINT_TS];
                 });
               });
-
               return timeseries;
             });
+          }
         } else {
           // Use history
           if (_this2.enableDirectDBConnection) {

dist/test/datasource-zabbix/zabbix.js

@@ -73,6 +73,7 @@ function ZabbixFactory(zabbixAPIService, ZabbixCachingProxy, ZabbixDBConnector)
       if (enableDirectDBConnection) {
         this.dbConnector = new ZabbixDBConnector(sqlDatasourceId);
         this.getHistory = this.dbConnector.getHistory.bind(this.dbConnector);
+        this.getTrend = this.dbConnector.getTrends.bind(this.dbConnector);
       }
     }
 

dist/test/datasource-zabbix/zabbixDBConnector.js

@@ -23,6 +23,11 @@ var HISTORY_TO_TABLE_MAP = {
   '4': 'history_text'
 };
 
+var TREND_TO_TABLE_MAP = {
+  '0': 'trends',
+  '3': 'trends_uint'
+};
+
 var consolidateByFunc = {
   'avg': 'AVG',
   'min': 'MIN',
@@ -31,6 +36,12 @@ var consolidateByFunc = {
   'count': 'COUNT'
 };
 
+var consolidateByTrendColumns = {
+  'avg': 'value_avg',
+  'min': 'value_min',
+  'max': 'value_max'
+};
+
 /** @ngInject */
 function ZabbixDBConnectorFactory(datasourceSrv, backendSrv) {
   var ZabbixDBConnector = function () {
@@ -91,6 +102,37 @@ function ZabbixDBConnectorFactory(datasourceSrv, backendSrv) {
         });
       }
     }, {
+      key: 'getTrends',
+      value: function getTrends(items, timeFrom, timeTill, options) {
+        var _this2 = this;
+
+        var intervalMs = options.intervalMs,
+            consolidateBy = options.consolidateBy;
+
+        var intervalSec = Math.ceil(intervalMs / 1000);
+
+        consolidateBy = consolidateBy || 'avg';
+        var aggFunction = consolidateByFunc[consolidateBy];
+
+        // Group items by value type and perform request for each value type
+        var grouped_items = _lodash2.default.groupBy(items, 'value_type');
+        var promises = _lodash2.default.map(grouped_items, function (items, value_type) {
+          var itemids = _lodash2.default.map(items, 'itemid').join(', ');
+          var table = TREND_TO_TABLE_MAP[value_type];
+          var valueColumn = _lodash2.default.includes(['avg', 'min', 'max'], consolidateBy) ? consolidateBy : 'avg';
+          valueColumn = consolidateByTrendColumns[valueColumn];
+
+          var query = '\n          SELECT itemid AS metric, clock AS time_sec, ' + aggFunction + '(' + valueColumn + ') as value\n            FROM ' + table + '\n            WHERE itemid IN (' + itemids + ')\n              AND clock > ' + timeFrom + ' AND clock < ' + timeTill + '\n            GROUP BY time_sec DIV ' + intervalSec + ', metric\n        ';
+
+          query = compactSQLQuery(query);
+          return _this2.invokeSQLQuery(query);
+        });
+
+        return Promise.all(promises).then(function (results) {
+          return _lodash2.default.flatten(results);
+        });
+      }
+    }, {
       key: 'handleGrafanaTSResponse',
       value: function handleGrafanaTSResponse(history, items) {
         var addHostName = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;

src/datasource-zabbix/datasource.js

@@ -158,19 +158,21 @@ class ZabbixAPIDatasource {
       options.consolidateBy = getConsolidateBy(target);
 
       if (useTrends) {
+        if (this.enableDirectDBConnection) {
+          getHistoryPromise = this.zabbix.getTrend(items, timeFrom, timeTo, options)
+          .then(history => this.zabbix.dbConnector.handleGrafanaTSResponse(history, items));
+        } else {
           let valueType = this.getTrendValueType(target);
           getHistoryPromise = this.zabbix.getTrend(items, timeFrom, timeTo)
-        .then(history => {
+          .then(history => responseHandler.handleTrends(history, items, valueType))
-          return responseHandler.handleTrends(history, items, valueType);
-        })
           .then(timeseries => {
             // Sort trend data, issue #202
             _.forEach(timeseries, series => {
               series.datapoints = _.sortBy(series.datapoints, point => point[c.DATAPOINT_TS]);
             });
-
             return timeseries;
           });
+        }
       } else {
         // Use history
         if (this.enableDirectDBConnection) {

src/datasource-zabbix/zabbix.js

@@ -45,6 +45,7 @@ function ZabbixFactory(zabbixAPIService, ZabbixCachingProxy, ZabbixDBConnector)
       if (enableDirectDBConnection) {
         this.dbConnector = new ZabbixDBConnector(sqlDatasourceId);
         this.getHistory = this.dbConnector.getHistory.bind(this.dbConnector);
+        this.getTrend = this.dbConnector.getTrends.bind(this.dbConnector);
       }
     }
 

src/datasource-zabbix/zabbixDBConnector.js

@@ -10,6 +10,11 @@ const HISTORY_TO_TABLE_MAP = {
   '4': 'history_text'
 };
 
+const TREND_TO_TABLE_MAP = {
+  '0': 'trends',
+  '3': 'trends_uint'
+};
+
 const consolidateByFunc = {
   'avg': 'AVG',
   'min': 'MIN',
@@ -18,6 +23,12 @@ const consolidateByFunc = {
   'count': 'COUNT'
 };
 
+const consolidateByTrendColumns = {
+  'avg': 'value_avg',
+  'min': 'value_min',
+  'max': 'value_max'
+};
+
 /** @ngInject */
 function ZabbixDBConnectorFactory(datasourceSrv, backendSrv) {
 
@@ -75,6 +86,38 @@ function ZabbixDBConnectorFactory(datasourceSrv, backendSrv) {
       });
     }
 
+    getTrends(items, timeFrom, timeTill, options) {
+      let {intervalMs, consolidateBy} = options;
+      let intervalSec = Math.ceil(intervalMs / 1000);
+
+      consolidateBy = consolidateBy || 'avg';
+      let aggFunction = consolidateByFunc[consolidateBy];
+
+      // Group items by value type and perform request for each value type
+      let grouped_items = _.groupBy(items, 'value_type');
+      let promises = _.map(grouped_items, (items, value_type) => {
+        let itemids = _.map(items, 'itemid').join(', ');
+        let table = TREND_TO_TABLE_MAP[value_type];
+        let valueColumn = _.includes(['avg', 'min', 'max'], consolidateBy) ? consolidateBy : 'avg';
+        valueColumn = consolidateByTrendColumns[valueColumn];
+
+        let query = `
+          SELECT itemid AS metric, clock AS time_sec, ${aggFunction}(${valueColumn}) as value
+            FROM ${table}
+            WHERE itemid IN (${itemids})
+              AND clock > ${timeFrom} AND clock < ${timeTill}
+            GROUP BY time_sec DIV ${intervalSec}, metric
+        `;
+
+        query = compactSQLQuery(query);
+        return this.invokeSQLQuery(query);
+      });
+
+      return Promise.all(promises).then(results => {
+        return _.flatten(results);
+      });
+    }
+
     handleGrafanaTSResponse(history, items, addHostName = true) {
       return convertGrafanaTSResponse(history, items, addHostName);
     }