don't panic, log errors

server/tilerenderer/renderer.go

@@ -128,6 +128,13 @@ func (tr *TileRenderer) renderImage(tc *coords.TileCoords, recursionDepth int) (
 		img, err := tr.mapblockrenderer.Render(mbr.Pos1, mbr.Pos2)
 
 		if err != nil {
+			fields := logrus.Fields{
+				"pos1": mbr.Pos1,
+				"pos2": mbr.Pos2,
+				"err":  err,
+			}
+			log.WithFields(fields).Debug("mapblock render from tilerender")
+
 			return nil, nil, err
 		}
 

server/tilerenderer/renderer_test.go

@@ -2,6 +2,7 @@ package tilerenderer
 
 import (
 	"bytes"
+	"github.com/sirupsen/logrus"
 	"io/ioutil"
 	"mapserver/colormapping"
 	"mapserver/coords"
@@ -14,7 +15,6 @@ import (
 	"os"
 	"testing"
 	"time"
-	"github.com/sirupsen/logrus"
 )
 
 func TestTileRender(t *testing.T) {

server/tilerendererjob/initial.go

@@ -57,7 +57,6 @@ func initialRender(ctx *app.App) {
 		}
 		logrus.WithFields(fields).Info("Initial rendering")
 
-
 		//tile gc
 		ctx.TileDB.GC()
 

server/tilerendererjob/worker.go

@@ -21,7 +21,15 @@ func worker(ctx *app.App, coords <-chan *coords.TileCoords, done chan bool) {
 
 		_, err := ctx.Tilerenderer.Render(tc)
 		if err != nil {
-			panic(err)
+			fields := logrus.Fields{
+				"X":       tc.X,
+				"Y":       tc.Y,
+				"Zoom":    tc.Zoom,
+				"LayerId": tc.LayerId,
+				"prefix":  "tilerenderjob",
+				"err":     err,
+			}
+			logrus.WithFields(fields).Error("Tile render job tile")
 		}
 	}