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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Profiler: 4 of 9 interface methods have no call sites (v25.0 / master)","articleBody":"**Describe the bug**\nThe Profiler interface declares 9 methods. In graphql-java-25.0 and on master as of today, 4 of them have zero call sites anywhere in the graphql-java codebase:            \n\n- `Profiler.dataLoaderUsed(String)`  ([line](https://github.com/graphql-java/graphql-java/blob/master/src/main/java/graphql/Profiler.java#L26))\n- `Profiler.batchLoadedOldStrategy(String, int, int)` ([line](https://github.com/graphql-java/graphql-java/blob/master/src/main/java/graphql/Profiler.java#L47))\n- `Profiler.batchLoadedNewStrategy(String, Integer, int, boolean, boolean)` ([line](https://github.com/graphql-java/graphql-java/blob/master/src/main/java/graphql/Profiler.java#L52))\n- `Profiler.manualDispatch(String, int, int)` ([line](https://github.com/graphql-java/graphql-java/blob/master/src/main/java/graphql/Profiler.java#L56))\n\nThat results in Profiler not collecting data relevant to dataloaders usage and `ProfilerResult.getDataLoaderLoadInvocations` and `ProfilerResult.getDispatchEvents` always return empty result. \n\n**To Reproduce**\n\n```\n// Compile \u0026 run with graphql-java 25.0 and java-dataloader 6.0.0 on the classpath.\n// Expected output:\n//   dataLoaderChainingEnabled=true\n//   dataLoaderLoadInvocations={}      \u003c-- BUG: empty (Profiler.dataLoaderUsed never called)\n//   dispatchEvents=[]                 \u003c-- BUG: empty (batchLoadedNewStrategy/batchLoadedOldStrategy/manualDispatch never called)\n//   oldStrategyDispatchingAll=[...]   \u003c-- non-empty only if chaining=false (the one wired DataLoader-related event)\n//   fieldsFetched=[/users, /users[*]/name]   \u003c-- this works; demonstrates the Profiler is hooked up\n\nimport graphql.ExecutionInput;\nimport graphql.ExecutionResult;\nimport graphql.GraphQL;\nimport graphql.ProfilerResult;\nimport graphql.execution.instrumentation.dataloader.DataLoaderDispatchingContextKeys;\nimport graphql.schema.GraphQLSchema;\nimport graphql.schema.idl.RuntimeWiring;\nimport graphql.schema.idl.SchemaGenerator;\nimport graphql.schema.idl.SchemaParser;\nimport graphql.schema.idl.TypeDefinitionRegistry;\nimport org.dataloader.BatchLoader;\nimport org.dataloader.DataLoader;\nimport org.dataloader.DataLoaderFactory;\nimport org.dataloader.DataLoaderRegistry;\n\nimport java.util.List;\nimport java.util.concurrent.CompletableFuture;\n\npublic final class ProfilerUnwiredReproducer {\n\n    private static final String SDL = \"\"\"\n        type Query { users: [User!]! }\n        type User { id: ID!, name: String! }\n        \"\"\";\n\n    public static void main(String[] args) {\n        final boolean chaining = args.length == 0 || !args[0].equals(\"--no-chaining\");\n\n        // 1. Schema with one DataLoader-backed field.\n        final BatchLoader\u003cString, String\u003e nameLoader =\n            keys -\u003e CompletableFuture.completedFuture(keys.stream().map(k -\u003e \"name-\" + k).toList());\n\n        final RuntimeWiring wiring = RuntimeWiring.newRuntimeWiring()\n            .type(\"Query\", t -\u003e t.dataFetcher(\"users\",\n                env -\u003e List.of(new User(\"1\"), new User(\"2\"), new User(\"3\"))))\n            .type(\"User\", t -\u003e t.dataFetcher(\"name\",\n                env -\u003e env.\u003cDataLoader\u003cString, String\u003e\u003egetDataLoader(\"nameLoader\")\n                          .load(((User) env.getSource()).id)))\n            .build();\n\n        final TypeDefinitionRegistry tdr = new SchemaParser().parse(SDL);\n        final GraphQLSchema schema = new SchemaGenerator().makeExecutableSchema(tdr, wiring);\n        final GraphQL graphQL = GraphQL.newGraphQL(schema).build();\n\n        // 2. ExecutionInput with profileExecution(true) + chaining flag.\n        final DataLoaderRegistry registry = new DataLoaderRegistry();\n        registry.register(\"nameLoader\", DataLoaderFactory.newDataLoader(nameLoader));\n\n        final ExecutionInput input = ExecutionInput.newExecutionInput()\n            .query(\"{ users { id name } }\")\n            .dataLoaderRegistry(registry)\n            .profileExecution(true)\n            .graphQLContext(b -\u003e b.put(DataLoaderDispatchingContextKeys.ENABLE_DATA_LOADER_CHAINING, chaining))\n            .build();\n\n        // 3. Execute and read the ProfilerResult.\n        final ExecutionResult result = graphQL.execute(input);\n        if (!result.getErrors().isEmpty()) {\n            System.err.println(\"Query errors: \" + result.getErrors());\n            System.exit(1);\n        }\n        final ProfilerResult profile = input.getGraphQLContext().get(ProfilerResult.PROFILER_CONTEXT_KEY);\n        if (profile == null) {\n            System.err.println(\"ProfilerResult is null — profileExecution(true) was not honored\");\n            System.exit(2);\n        }\n\n        // 4. Print the four collections that demonstrate the bug.\n        System.out.println(\"dataLoaderChainingEnabled = \" + profile.isDataLoaderChainingEnabled());\n        System.out.println(\"fieldsFetched             = \" + profile.getFieldsFetched());           // populated  (fieldFetched is wired)\n        System.out.println(\"oldStrategyDispatchingAll = \" + profile.getOldStrategyDispatchingAll());// populated only when chaining=false\n        System.out.println(\"dataLoaderLoadInvocations = \" + profile.getDataLoaderLoadInvocations());// EMPTY: dataLoaderUsed has 0 call sites\n        System.out.println(\"dispatchEvents            = \" + profile.getDispatchEvents());          // EMPTY: batchLoadedOld/NewStrategy + manualDispatch all have 0 call sites\n    }\n\n    private record User(String id) {}\n}\n```","author":{"url":"https://github.com/Apelsinka223","@type":"Person","name":"Apelsinka223"},"datePublished":"2026-04-29T11:02:28.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/4366/graphql-java/issues/4366"}