Auth: Able to use API tokens for authentication (#1662)

* Auth: Able to use API tokens for authentication

* Update change log

pkg/settings/models.go

@@ -2,8 +2,14 @@ package settings
 
 import "time"
 
+const (
+	AuthTypeUserLogin = "userLogin"
+	AuthTypeToken     = "token"
+)
+
 // ZabbixDatasourceSettingsDTO model
 type ZabbixDatasourceSettingsDTO struct {
+	AuthType    string      `json:"authType"`
 	Trends      bool        `json:"trends"`
 	TrendsFrom  string      `json:"trendsFrom"`
 	TrendsRange string      `json:"trendsRange"`
@@ -16,6 +22,7 @@ type ZabbixDatasourceSettingsDTO struct {
 
 // ZabbixDatasourceSettings model
 type ZabbixDatasourceSettings struct {
+	AuthType    string
 	Trends      bool
 	TrendsFrom  time.Duration
 	TrendsRange time.Duration

pkg/settings/settings.go

@@ -3,10 +3,12 @@ package settings
 import (
 	"encoding/json"
 	"errors"
-	"github.com/alexanderzobnin/grafana-zabbix/pkg/gtime"
-	"github.com/grafana/grafana-plugin-sdk-go/backend"
 	"strconv"
 	"time"
+
+	"github.com/alexanderzobnin/grafana-zabbix/pkg/gtime"
+
+	"github.com/grafana/grafana-plugin-sdk-go/backend"
 )
 
 func ReadZabbixSettings(dsInstanceSettings *backend.DataSourceInstanceSettings) (*ZabbixDatasourceSettings, error) {
@@ -17,6 +19,10 @@ func ReadZabbixSettings(dsInstanceSettings *backend.DataSourceInstanceSettings)
 		return nil, err
 	}
 
+	if zabbixSettingsDTO.AuthType == "" {
+		zabbixSettingsDTO.AuthType = AuthTypeUserLogin
+	}
+
 	if zabbixSettingsDTO.TrendsFrom == "" {
 		zabbixSettingsDTO.TrendsFrom = "7d"
 	}
@@ -65,6 +71,7 @@ func ReadZabbixSettings(dsInstanceSettings *backend.DataSourceInstanceSettings)
 	}
 
 	zabbixSettings := &ZabbixDatasourceSettings{
+		AuthType:                zabbixSettingsDTO.AuthType,
 		Trends:                  zabbixSettingsDTO.Trends,
 		TrendsFrom:              trendsFrom,
 		TrendsRange:             trendsRange,