Move error handling for parsing up into the labelCollections service

main.go

@@ -66,6 +66,8 @@ var dsMap map[string]*C.Datastructure
 // pRootEndpoint is the path prefix for all label collection
 var pRootEndpoint string
 
+// renderdConfigPath contains the path to renderd.conf. It is used for
+// the labelCollections endpoint
 var renderdConfigPath string
 
 func main() {
@@ -214,7 +216,7 @@ func getLabelCollections(w http.ResponseWriter, r *http.Request) {
 	}
 	tileEndpoints, err := parseEndpoints(renderdConfigPath)
 	if err != nil {
-		// TODO: 500 Status
+		log.Printf("Error during parsing: %s ", err.Error())
 	}
 	labelCollection := labelCollectionResult{
 		pRootEndpoint,

tileconfig.go

@@ -1,8 +1,6 @@
 package main
 
 import (
-	"log"
-
 	"github.com/Terry-Mao/goconf"
 )
 
@@ -20,7 +18,7 @@ func parseEndpoints(file string) ([]tileEndpoint, error) {
 	conf.Spliter = "="
 	conf.Comment = ";"
 	if err := conf.Parse(file); err != nil {
-		log.Printf("Error during parsing: %s ", err.Error())
+		return nil, err
 	}
 
 	for _, sectionName := range conf.Sections() {