Add error source (#1954)

Fixes  #1879

pkg/zabbix/type_converters.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 
 	"github.com/bitly/go-simplejson"
+	"github.com/grafana/grafana-plugin-sdk-go/backend"
 )
 
 func convertTo(value *simplejson.Json, result interface{}) error {
@@ -14,6 +15,7 @@ func convertTo(value *simplejson.Json, result interface{}) error {
 
 	err = json.Unmarshal(valueJSON, result)
 	if err != nil {
+		backend.Logger.Debug("Error unmarshalling JSON", "error", err, "result", result)
 		return err
 	}
 

pkg/zabbix/utils.go

@@ -6,6 +6,7 @@ import (
 	"strings"
 
 	"github.com/dlclark/regexp2"
+	"github.com/grafana/grafana-plugin-sdk-go/backend"
 )
 
 func (item *Item) ExpandItemName() string {
@@ -79,7 +80,7 @@ func parseFilter(filter string) (*regexp2.Regexp, error) {
 		if flagRE.MatchString(matches[2]) {
 			pattern += "(?" + matches[2] + ")"
 		} else {
-			return nil, fmt.Errorf("error parsing regexp: unsupported flags `%s` (expected [%s])", matches[2], vaildREModifiers)
+			return nil, backend.DownstreamError(fmt.Errorf("error parsing regexp: unsupported flags `%s` (expected [%s])", matches[2], vaildREModifiers))
 		}
 	}
 	pattern += matches[1]

pkg/zabbix/zabbix.go

@@ -95,7 +95,7 @@ func (zabbix *Zabbix) request(ctx context.Context, method string, params ZabbixA
 	result, err := zabbix.api.Request(ctx, method, params, zabbix.version)
 	notAuthorized := isNotAuthorized(err)
 	isTokenAuth := zabbix.settings.AuthType == settings.AuthTypeToken
-	if err == zabbixapi.ErrNotAuthenticated || (notAuthorized && !isTokenAuth) {
+	if err == backend.DownstreamError(zabbixapi.ErrNotAuthenticated) || (notAuthorized && !isTokenAuth) {
 		if notAuthorized {
 			zabbix.logger.Debug("Authentication token expired, performing re-login")
 		}
@@ -121,7 +121,7 @@ func (zabbix *Zabbix) Authenticate(ctx context.Context) error {
 	if authType == settings.AuthTypeToken {
 		token, exists := zabbix.dsInfo.DecryptedSecureJSONData["apiToken"]
 		if !exists {
-			return errors.New("cannot find Zabbix API token")
+			return backend.DownstreamError(errors.New("cannot find Zabbix API token"))
 		}
 		err = zabbix.api.AuthenticateWithToken(ctx, token)
 		if err != nil {

pkg/zabbix/zabbix_test.go

@@ -2,9 +2,10 @@ package zabbix
 
 import (
 	"context"
-	"github.com/alexanderzobnin/grafana-zabbix/pkg/settings"
 	"testing"
 
+	"github.com/alexanderzobnin/grafana-zabbix/pkg/settings"
+
 	"github.com/stretchr/testify/assert"
 
 	"github.com/grafana/grafana-plugin-sdk-go/backend"