throw better exception when a resolver is not found

sangria-graphql · Jun 27, 2024 · 701096f · 701096f
1 parent 3b74ffb
commit 701096f
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Showing 2 changed files with 8 additions and 2 deletions.
diff --git a/core/src/main/scala/sangria/federation/v1/Federation.scala b/core/src/main/scala/sangria/federation/v1/Federation.scala
@@ -45,7 +45,10 @@ object Federation {
                 "_entities" -> (ctx =>
                   ctx.withArgs(representationsArg) { anys =>
                     Action.sequence(anys.map { any =>
-                      val resolver = resolversMap(any.__typename)
+                      val typeName = any.__typename
+                      val resolver = resolversMap.getOrElse(
+                        typeName,
+                        throw new Exception(s"no resolver found for type '$typeName'"))
 
                       any.fields.decode[resolver.Arg](resolver.decoder) match {
                         case Right(value) => resolver.resolve(value, ctx)

diff --git a/core/src/main/scala/sangria/federation/v2/Federation.scala b/core/src/main/scala/sangria/federation/v2/Federation.scala
@@ -130,7 +130,10 @@ object Federation {
                 "_entities" -> (ctx =>
                   ctx.withArgs(representationsArg) { anys =>
                     Action.sequence(anys.map { any =>
-                      val resolver = resolversMap(any.__typename)
+                      val typeName = any.__typename
+                      val resolver = resolversMap.getOrElse(
+                        typeName,
+                        throw new Exception(s"no resolver found for type '$typeName'"))
 
                       any.fields.decode[resolver.Arg](resolver.decoder) match {
                         case Right(value) => resolver.resolve(value, ctx)