{"record":{"id":"4dfabfbff33e7f09","repo":"apache/shenyu","slug":"the-validation-existprovidermethod-invoked-error","errorCode":null,"errorMessage":"the validation ExistProviderMethod invoked error","messagePattern":"the validation ExistProviderMethod invoked error","errorType":"exception","errorClass":"ResourceNotFoundException","httpStatus":404,"severity":"error","filePath":"shenyu-admin/src/main/java/org/apache/shenyu/admin/utils/Assert.java","lineNumber":94,"sourceCode":"    /**\n     * assert test is true.\n     *\n     * @param test    string\n     * @param message error message\n     */\n    public static void isTrue(final Boolean test, final String message) {\n        if (!Boolean.TRUE.equals(test)) {\n            throw new ValidFailException(message);\n        }\n    }\n    \n    /**\n     * throw ResourceNotFoundException with default message.\n     *\n     * @param e exception\n     */\n    public static void throwException(final Exception e) {\n        throw new ResourceNotFoundException(\"the validation ExistProviderMethod invoked error\", e);\n    }\n}\n","sourceCodeStart":76,"sourceCodeEnd":97,"githubUrl":"https://github.com/apache/shenyu/blob/567142e07261b3e615ae8850b30f4421f455cc5d/shenyu-admin/src/main/java/org/apache/shenyu/admin/utils/Assert.java#L76-L97","documentation":"Assert.throwException wraps any Exception passed to it into a ResourceNotFoundException with the fixed message 'the validation ExistProviderMethod invoked error'. It is a helper used where validating an existing provider method (e.g. during metadata/registration validation) failed.","triggerScenarios":"Calling Assert.throwException(e) directly, or code paths that validate a Shenyu @ShenyuSpringMvcClient / provider method and delegate failures here — the caller invoked a validation on a method that does not exist or threw while being introspected.","commonSituations":"Client registering an API method that no longer exists on the backend service after refactor; mismatch between registered metadata and actual service methods; reflective invocation of a provider method failing during admin validation.","solutions":["Look at the wrapped cause exception (ResourceNotFoundException.getCause()) for the real failure","Re-register/sync the client metadata so it matches the actual backend service methods","Verify the backend service method annotated for ShenYu still exists with the same signature","If this surfaces from a client registration, upgrade/restart the backend client to refresh metadata"],"exampleFix":"// before\nAssert.throwException(e); // loses specific message\n// after\nthrow new ResourceNotFoundException(\"validation failed for method \" + methodName, e);","handlingStrategy":"try-catch","validationCode":"// verify the provider method exists before invoking validation\nMethod m = serviceClass.getMethods().stream().filter(x -> x.getName().equals(methodName)).findFirst().orElse(null);","typeGuard":null,"tryCatchPattern":"try { admin.validate(registration); } catch (ResourceNotFoundException e) { inspectCause(e.getCause()); resyncClientMetadata(); }","preventionTips":["Keep client metadata in sync after backend refactors (restart/upgrade shenyu-client)","Always inspect ResourceNotFoundException.getCause() for the root error","Ensure annotated @Shenyu*Client methods exist at registration time"],"tags":["validation","metadata","reflection","admin"],"backgroundTag":"resource-not-found","analyzedSha":"567142e07261b3e615ae8850b30f4421f455cc5d","analyzedAt":"2026-09-12T10:08:21.293Z","contentChangedAt":"2026-09-12T10:08:21.293Z","schemaVersion":2},"datasetVersion":"2026-09-16T04:17:20.429Z"}