fix(influxdb): influxdb data source did not use right http abstraction for…

fix(influxdb): influxdb data source did not use right http abstraction for metric queries, fixes #2919

docker/blocks/prometheus/prometheus.yml

@@ -4,10 +4,6 @@ global:
   evaluation_interval: 10s # By default, scrape targets every 15 seconds.
   # scrape_timeout is set to the global default (10s).
 
-  # Attach these extra labels to all timeseries collected by this Prometheus instance.
-  labels:
-      monitor: 'codelab-monitor'
-
 # Load and evaluate rules in this file every 'evaluation_interval' seconds.
 rule_files:
   # - "first.rules"

pkg/plugins/plugins.go

@@ -91,7 +91,6 @@ func (scanner *PluginScanner) loadPluginJson(path string) error {
 		if !exists {
 			return errors.New("Did not find type property in plugin.json")
 		}
-
 		DataSources[datasourceType.(string)] = pluginJson
 	}
 

public/app/plugins/datasource/influxdb/datasource.js

@@ -12,7 +12,7 @@ function (angular, _, dateMath, InfluxSeries, InfluxQueryBuilder) {
 
   var module = angular.module('grafana.services');
 
-  module.factory('InfluxDatasource', function($q, $http, templateSrv) {
+  module.factory('InfluxDatasource', function($q, backendSrv, templateSrv) {
 
     function InfluxDatasource(datasource) {
       this.type = 'influxdb';
@@ -161,7 +161,7 @@ function (angular, _, dateMath, InfluxSeries, InfluxQueryBuilder) {
         options.headers.Authorization = self.basicAuth;
       }
 
-      return $http(options).then(function(result) {
+      return backendSrv.datasourceRequest(options).then(function(result) {
         return result.data;
       }, function(err) {
         if (err.status !== 0 || err.status >= 300) {