{"record":{"id":"8943221fdb0b2313","repo":"vectordotdev/vector","slug":"schema-type-was-not-able-to-be-detected","errorCode":null,"errorMessage":"Schema type was not able to be detected!","messagePattern":"Schema type was not able to be detected!","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"error","filePath":"lib/vector-config/src/schema/parser/query.rs","lineNumber":306,"sourceCode":"            }\n        }\n\n        if let Some(instance_types) = self.instance_type.as_ref() {\n            return match instance_types {\n                SingleOrVec::Single(single) => SchemaType::Typed(OneOrMany::One(*single.clone())),\n                SingleOrVec::Vec(many) => SchemaType::Typed(OneOrMany::Many(many.clone())),\n            };\n        }\n\n        if let Some(const_value) = self.const_value.as_ref() {\n            return SchemaType::Constant(const_value);\n        }\n\n        if let Some(enum_values) = self.enum_values.as_ref() {\n            return SchemaType::Enum(enum_values);\n        }\n\n        panic!(\"Schema type was not able to be detected!\");\n    }\n\n    fn description(&self) -> Option<&str> {\n        self.metadata\n            .as_ref()\n            .and_then(|metadata| metadata.description.as_deref())\n    }\n\n    fn title(&self) -> Option<&str> {\n        self.metadata\n            .as_ref()\n            .and_then(|metadata| metadata.title.as_deref())\n    }\n\n    fn get_attributes(&self, key: &str) -> Option<OneOrMany<CustomAttribute>> {\n        self.extensions.get(constants::METADATA)\n            .map(|metadata| match metadata {\n                Value::Object(attributes) => attributes,","sourceCodeStart":288,"sourceCodeEnd":324,"githubUrl":"https://github.com/vectordotdev/vector/blob/bdb87aeaa4c4ff27c0ba643c1c77b21bf2ef4013/lib/vector-config/src/schema/parser/query.rs#L288-L324","documentation":"After checking instance types, reference, subschemas, arrays/objects, and enum values, `schema_type` in the schema query parser gives up: the schema node matches none of the recognized shapes. Since the parser expects every schema it visits to be classifiable into a `SchemaType`, it panics with this message. It usually indicates a schema that is effectively empty or uses constructs the parser doesn't model (e.g. no `type`, no `enum`, no combinators).","triggerScenarios":"Querying a schema node that has no `instance_type`, no `$ref`/reference, no allOf/oneOf/anyOf subschemas, no array/object constraints, and no `enum_values`, so control flow reaches `panic!(\"Schema type was not able to be detected!\")` at lib/vector-config/src/schema/parser/query.rs:306.","commonSituations":"An empty schema `{}` in a document fed to the schema query tooling; a boolean-like or bare `true`/`false` schema; schemas relying on keywords the parser ignores (e.g. `const`, `format` only); truncated or hand-edited generated schemas.","solutions":["Add an explicit `type` (or `enum`) to the schema node so it can be classified","Replace an empty/`const`-only schema with one carrying a recognized `type` or `enum` definition","Check whether the schema was truncated or stripped by preprocessing and regenerate it"],"exampleFix":"// before\n{}\n// after\n{ \"type\": \"string\" }","handlingStrategy":"type-guard","validationCode":"fn schema_is_classifiable(schema: &serde_json::Value) -> bool {\n    schema.get(\"type\").is_some()\n        || schema.get(\"enum\").is_some()\n        || schema.get(\"$ref\").is_some()\n        || [\"allOf\", \"oneOf\", \"anyOf\"].iter().any(|k| schema.get(k).is_some())\n}","typeGuard":"fn is_empty_schema(v: &serde_json::Value) -> bool {\n    v.as_object().map_or(false, |o| o.is_empty())\n}","tryCatchPattern":null,"preventionTips":["Give every schema node an explicit `type` or `enum`","Replace bare `{}`, `true`, `false`, or `const`-only schemas with typed equivalents when feeding the query tooling","Regenerate schemas from source instead of hand-editing generated JSON"],"tags":["rust","json-schema","parser"],"backgroundTag":"unexpected-response-shape","analyzedSha":"bdb87aeaa4c4ff27c0ba643c1c77b21bf2ef4013","analyzedAt":"2026-09-16T02:53:35.741Z","contentChangedAt":"2026-09-16T02:53:35.741Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}