add template variable support for query alias

src/connector/grafana/tdengine/dist/datasource.js

@@ -71,7 +71,7 @@ var GenericDatasource = exports.GenericDatasource = function () {
       var targets = _lodash2.default.map(options.targets, function (target) {
         return {
           refId: target.refId,
-          alias: target.alias || "",
+          alias: _this.generateAlias(options, target),
           sql: _this.generateSql(options, target)
         };
       });
@@ -112,6 +112,13 @@ var GenericDatasource = exports.GenericDatasource = function () {
 
       return "Basic " + this.encode(defaultUser + ":" + defaultPassword);
     }
+  }, {
+    key: 'generateAlias',
+    value: function generateAlias(options, target) {
+      var alias = target.alias || "";
+      alias = this.templateSrv.replace(alias, options.scopedVars, 'csv');
+      return alias;
+    }
   }, {
     key: 'generateSql',
     value: function generateSql(options, target) {

src/connector/grafana/tdengine/dist/datasource.js.map

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(isNaN(chr2)) {\n        enc3 = enc4 = 64;\n      } else if (isNaN(chr3)) {\n        enc4 = 64;\n      }\n      output = output + _keyStr.charAt(enc1) + _keyStr.charAt(enc2) + _keyStr.charAt(enc3) + _keyStr.charAt(enc4);\n    }\n\n    return output;\n  }\n\n  getAuthorization(jsonData){\n    jsonData = jsonData || {};\n    var defaultUser = jsonData.user || \"root\";\n    var defaultPassword = jsonData.password || \"taosdata\";\n\n    return \"Basic \" + this.encode(defaultUser + \":\" + defaultPassword);\n  }\n\n  generateAlias(options, target){\n    var alias = target.alias || \"\";\n    alias = this.templateSrv.replace(alias, options.scopedVars, 'csv');\n    return alias;\n  }\n\n  generateSql(options, target) {\n    var sql = target.sql;\n    if (sql == null || sql == \"\"){\n      return sql;\n    }\n\n    var queryStart = \"now-1h\";\n    if (options != null && options.range != null && options.range.from != null){\n      queryStart = options.range.from.toISOString();\n    }\n\n    var queryEnd = \"now\";\n    if (options != null && options.range != null && options.range.to != null){\n      queryEnd = options.range.to.toISOString();\n    }\n    var intervalMs = options.intervalMs || \"20000\";\n\n    intervalMs += \"a\";\n    sql = sql.replace(/^\\s+|\\s+$/gm, '');\n    sql = sql.replace(\"$from\", \"'\" + queryStart + \"'\");\n    sql = sql.replace(\"$begin\", \"'\" + queryStart + \"'\");\n    sql = sql.replace(\"$to\", \"'\" + queryEnd + \"'\");\n    sql = sql.replace(\"$end\", \"'\" + queryEnd + \"'\");\n    sql = sql.replace(\"$interval\", intervalMs);\n\n    sql = this.templateSrv.replace(sql, options.scopedVars, 'csv');\n    return sql;\n  }\n\n}"]}
\ No newline at end of file

src/connector/grafana/tdengine/src/datasource.js

@@ -49,7 +49,7 @@ export class GenericDatasource {
     var targets = _.map(options.targets, target => {
       return {
         refId: target.refId,
-        alias: target.alias || "",
+        alias: this.generateAlias(options, target),
         sql: this.generateSql(options, target)
       };
     });
@@ -89,6 +89,12 @@ export class GenericDatasource {
     return "Basic " + this.encode(defaultUser + ":" + defaultPassword);
   }
 
+  generateAlias(options, target){
+    var alias = target.alias || "";
+    alias = this.templateSrv.replace(alias, options.scopedVars, 'csv');
+    return alias;
+  }
+
   generateSql(options, target) {
     var sql = target.sql;
     if (sql == null || sql == ""){