# HG changeset patch
# User Tom Gottfried <tom@intevation.de>
# Date 1557246911 -7200
# Node ID 928cdc06ff37b5be1994f00cf6ba4ac8c72e73da
# Parent  505414dfe3e7adfdfde566e7807fd83794409832
Warn only once if gauge is unknown

Makes the import faster by some orders of magnitude in the worst
case scenario of a large CSV file with only unknown gauges.

diff -r 505414dfe3e7 -r 928cdc06ff37 pkg/imports/agm.go
--- a/pkg/imports/agm.go	Tue May 07 17:38:25 2019 +0200
+++ b/pkg/imports/agm.go	Tue May 07 18:35:11 2019 +0200
@@ -302,16 +302,19 @@
 		return nil, err
 	}
 	defer gaugeCheckStmt.Close()
+
 	selectStmt, err := tx.PrepareContext(ctx, agmSelectSQL)
 	if err != nil {
 		return nil, err
 	}
 	defer selectStmt.Close()
+
 	insertStmt, err := tx.PrepareContext(ctx, agmInsertSQL)
 	if err != nil {
 		return nil, err
 	}
 	defer insertStmt.Close()
+
 	trackStmt, err := tx.PrepareContext(ctx, trackImportSQL)
 	if err != nil {
 		return nil, err
@@ -341,7 +344,7 @@
 
 		if exists, found := checkedGauges[*gid]; found {
 			if !exists {
-				feedback.Warn("Ignoring data for unknown gauge %s", gid.String())
+				// Just ignore the line since we have already warned
 				continue lines
 			}
 		} else { // not found in gauge cache