Issue #4: no need for formated exception

pkg/quickwit/quickwit.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -51,7 +52,7 @@ func getTimestampFieldInfos(index string, qwUrl string, cli *http.Client) (strin
 	if statusCode < 200 || statusCode >= 400 {
 		errMsg := fmt.Sprintf("Error when calling url = %s: statusCode = %d", mappingEndpointUrl, statusCode)
 		qwlog.Error(errMsg)
-		return "", "", fmt.Errorf(errMsg)
+		return "", "", errors.New(errMsg)
 	}
 
 	defer r.Body.Close()
@@ -67,7 +68,7 @@ func getTimestampFieldInfos(index string, qwUrl string, cli *http.Client) (strin
 	if err != nil {
 		errMsg := fmt.Sprintf("Unmarshalling body error: err = %s, body = %s", err.Error(), (body))
 		qwlog.Error(errMsg)
-		return "", "", fmt.Errorf(errMsg)
+		return "", "", errors.New(errMsg)
 	}
 
 	timestampFieldName := payload.IndexConfig.DocMapping.TimestampField
@@ -82,7 +83,7 @@ func getTimestampFieldInfos(index string, qwUrl string, cli *http.Client) (strin
 	if timestampFieldFormat == "undef" {
 		errMsg := fmt.Sprintf("No format found for field: %s", string(timestampFieldName))
 		qwlog.Error(errMsg)
-		return timestampFieldName, "", fmt.Errorf(errMsg)
+		return timestampFieldName, "", errors.New(errMsg)
 	}
 
 	qwlog.Info(fmt.Sprintf("Found timestampFieldName = %s, timestampFieldFormat = %s", timestampFieldName, timestampFieldFormat))