Add a setting to allow DB queries

pkg/api/pluginproxy/ds_proxy.go

@@ -166,7 +166,9 @@ func (proxy *DataSourceProxy) getDirector() func(req *http.Request) {
 func (proxy *DataSourceProxy) validateRequest() error {
 	if proxy.ds.Type == m.DS_INFLUXDB {
 		if proxy.ctx.Query("db") != proxy.ds.Database {
-			return errors.New("Datasource is not configured to allow this database")
+			if(!proxy.ds.JsonData.Get("allowDatabaseQuery").MustBool(false)) {
+				return errors.New("Datasource is not configured to allow this database");
+			}
 		}
 	}
 

public/app/plugins/datasource/influxdb/datasource.ts

@@ -17,6 +17,7 @@ export default class InfluxDatasource {
   basicAuth: any;
   withCredentials: any;
   interval: any;
+  allowDatabaseQuery: boolean;
   supportAnnotations: boolean;
   supportMetrics: boolean;
   responseParser: any;
@@ -35,6 +36,7 @@ export default class InfluxDatasource {
     this.basicAuth = instanceSettings.basicAuth;
     this.withCredentials = instanceSettings.withCredentials;
     this.interval = (instanceSettings.jsonData || {}).timeInterval;
+    this.allowDatabaseQuery = (instanceSettings.jsonData || {}).allowDatabaseQuery === true;
     this.supportAnnotations = true;
     this.supportMetrics = true;
     this.responseParser = new ResponseParser();
@@ -214,6 +216,9 @@ export default class InfluxDatasource {
 
     if (options && options.database) {
       params.db = options.database;
+      if (params.db !== this.database && !this.allowDatabaseQuery) {
+        return this.$q.reject( { message: 'This datasource does not allow changing database' } );
+      }
     } else if (this.database) {
       params.db = this.database;
     }

public/app/plugins/datasource/influxdb/partials/config.html

@@ -23,10 +23,16 @@
 	</div>
 </div>
 
+<gf-form-switch class="gf-form"
+  label="Allow Database Queries"
+  label-class="gf-form-label width-14"
+  checked="ctrl.current.jsonData.allowDatabaseQuery"
+  tooltip="Support changing the database from a query"></gf-form-switch>
+
 <div class="gf-form-group">
 	<div class="gf-form-inline">
 		<div class="gf-form">
-			<span class="gf-form-label">Min time interval</span>
+			<span class="gf-form-label width-14">Min time interval</span>
 			<input type="text" class="gf-form-input width-6" ng-model="ctrl.current.jsonData.timeInterval" spellcheck='false' placeholder="10s"></input>
 			<info-popover mode="right-absolute">
 				A lower limit for the auto group by time interval. Recommended to be set to write frequency,