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Context failed to generate pydantic json schema, so chains containing Context steps not working in LangServe #27429

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IlyaBokovenko opened this issue Oct 17, 2024 · 1 comment
Open
5 tasks done

Context failed to generate pydantic json schema, so chains containing Context steps not working in LangServe #27429

IlyaBokovenko opened this issue Oct 17, 2024 · 1 comment
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🤖:bug Related to a bug, vulnerability, unexpected error with an existing feature Ɑ: core Related to langchain-core

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@IlyaBokovenko
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Checked other resources

  • I added a very descriptive title to this issue.
  • I searched the LangChain documentation with the integrated search.
  • I used the GitHub search to find a similar question and didn't find it.
  • I am sure that this is a bug in LangChain rather than my code.
  • The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).

Example Code

from langchain_core.beta.runnables.context import Context, ContextSet, ContextGet

x = ContextSet('question')
x.config_schema().model_json_schema()

Error Message and Stack Trace (if applicable)

PydanticInvalidForJsonSchema Traceback (most recent call last)
Cell In[40], line 2
1 x = ContextSet('question')
----> 2 x.config_schema().model_json_schema()

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\main.py:476, in BaseModel.model_json_schema(cls, by_alias, ref_template, schema_generator, mode)
456 @classmethod
457 def model_json_schema(
458 cls,
(...)
462 mode: JsonSchemaMode = 'validation',
463 ) -> dict[str, Any]:
464 """Generates a JSON schema for a model class.
465
466 Args:
(...)
474 The JSON schema for the given model class.
475 """
--> 476 return model_json_schema(
477 cls, by_alias=by_alias, ref_template=ref_template, schema_generator=schema_generator, mode=mode
478 )

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:2280, in model_json_schema(cls, by_alias, ref_template, schema_generator, mode)
2277 raise AttributeError('model_json_schema() must be called on a subclass of BaseModel, not BaseModel itself.')
2279 assert not isinstance(cls.pydantic_core_schema, _mock_val_ser.MockCoreSchema), 'this is a bug! please report it'
-> 2280 return schema_generator_instance.generate(cls.pydantic_core_schema, mode=mode)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:415, in GenerateJsonSchema.generate(self, schema, mode)
408 if self._used:
409 raise PydanticUserError(
410 'This JSON schema generator has already been used to generate a JSON schema. '
411 f'You must create a new instance of {type(self).name} to generate a new JSON schema.',
412 code='json-schema-already-used',
413 )
--> 415 json_schema: JsonSchemaValue = self.generate_inner(schema)
416 json_ref_counts = self.get_json_ref_counts(json_schema)
418 ref = cast(JsonRef, json_schema.get('$ref'))

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:552, in GenerateJsonSchema.generate_inner(self, schema)
548 return json_schema
550 current_handler = _schema_generation_shared.GenerateJsonSchemaHandler(self, new_handler_func)
--> 552 json_schema = current_handler(schema)
553 if _core_utils.is_core_schema(schema):
554 json_schema = populate_defs(schema, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:527, in GenerateJsonSchema.generate_inner..new_handler_func(schema_or_field, current_handler, js_modify_function)
522 def new_handler_func(
523 schema_or_field: CoreSchemaOrField,
524 current_handler: GetJsonSchemaHandler = current_handler,
525 js_modify_function: GetJsonSchemaFunction = js_modify_function,
526 ) -> JsonSchemaValue:
--> 527 json_schema = js_modify_function(schema_or_field, current_handler)
528 if _core_utils.is_core_schema(schema_or_field):
529 json_schema = populate_defs(schema_or_field, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\main.py:697, in BaseModel.get_pydantic_json_schema(cls, core_schema, handler)
673 @classmethod
674 def get_pydantic_json_schema(
675 cls,
(...)
678 /,
679 ) -> JsonSchemaValue:
680 """Hook into generating the model's JSON schema.
681
682 Args:
(...)
695 A JSON schema, as a Python object.
696 """
--> 697 return handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:527, in GenerateJsonSchema.generate_inner..new_handler_func(schema_or_field, current_handler, js_modify_function)
522 def new_handler_func(
523 schema_or_field: CoreSchemaOrField,
524 current_handler: GetJsonSchemaHandler = current_handler,
525 js_modify_function: GetJsonSchemaFunction = js_modify_function,
526 ) -> JsonSchemaValue:
--> 527 json_schema = js_modify_function(schema_or_field, current_handler)
528 if _core_utils.is_core_schema(schema_or_field):
529 json_schema = populate_defs(schema_or_field, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_generate_schema.py:272, in modify_model_json_schema(schema_or_field, handler, cls, title)
268 from ._dataclasses import is_builtin_dataclass
270 BaseModel = import_cached_base_model()
--> 272 json_schema = handler(schema_or_field)
273 original_schema = handler.resolve_ref_schema(json_schema)
274 if title is not None:

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:511, in GenerateJsonSchema.generate_inner..handler_func(schema_or_field)
509 if _core_utils.is_core_schema(schema_or_field) or _core_utils.is_core_schema_field(schema_or_field):
510 generate_for_schema_type = self._schema_type_to_method[schema_or_field['type']]
--> 511 json_schema = generate_for_schema_type(schema_or_field)
512 else:
513 raise TypeError(f'Unexpected schema type: schema={schema_or_field}')

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:1415, in GenerateJsonSchema.model_schema(self, schema)
1412 title = config.get('title')
1414 with self._config_wrapper_stack.push(config):
-> 1415 json_schema = self.generate_inner(schema['schema'])
1417 json_schema_extra = config.get('json_schema_extra')
1418 if cls.pydantic_root_model:

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:552, in GenerateJsonSchema.generate_inner(self, schema)
548 return json_schema
550 current_handler = _schema_generation_shared.GenerateJsonSchemaHandler(self, new_handler_func)
--> 552 json_schema = current_handler(schema)
553 if _core_utils.is_core_schema(schema):
554 json_schema = populate_defs(schema, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:511, in GenerateJsonSchema.generate_inner..handler_func(schema_or_field)
509 if _core_utils.is_core_schema(schema_or_field) or _core_utils.is_core_schema_field(schema_or_field):
510 generate_for_schema_type = self._schema_type_to_method[schema_or_field['type']]
--> 511 json_schema = generate_for_schema_type(schema_or_field)
512 else:
513 raise TypeError(f'Unexpected schema type: schema={schema_or_field}')

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:1510, in GenerateJsonSchema.model_fields_schema(self, schema)
1508 if self.mode == 'serialization':
1509 named_required_fields.extend(self._name_required_computed_fields(schema.get('computed_fields', [])))
-> 1510 json_schema = self._named_required_fields_schema(named_required_fields)
1511 extras_schema = schema.get('extras_schema', None)
1512 if extras_schema is not None:

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:1318, in GenerateJsonSchema._named_required_fields_schema(self, named_required_fields)
1316 name = self._get_alias_name(field, name)
1317 try:
-> 1318 field_json_schema = self.generate_inner(field).copy()
1319 except PydanticOmit:
1320 continue

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:552, in GenerateJsonSchema.generate_inner(self, schema)
548 return json_schema
550 current_handler = _schema_generation_shared.GenerateJsonSchemaHandler(self, new_handler_func)
--> 552 json_schema = current_handler(schema)
553 if _core_utils.is_core_schema(schema):
554 json_schema = populate_defs(schema, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:545, in GenerateJsonSchema.generate_inner..new_handler_func(schema_or_field, current_handler, js_modify_function)
540 def new_handler_func(
541 schema_or_field: CoreSchemaOrField,
542 current_handler: GetJsonSchemaHandler = current_handler,
543 js_modify_function: GetJsonSchemaFunction = js_modify_function,
544 ) -> JsonSchemaValue:
--> 545 json_schema = js_modify_function(schema_or_field, current_handler)
546 if _core_utils.is_core_schema(schema_or_field):
547 json_schema = populate_defs(schema_or_field, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_generate_schema.py:2469, in get_json_schema_update_func..json_schema_update_func(core_schema_or_field, handler)
2466 def json_schema_update_func(
2467 core_schema_or_field: CoreSchemaOrField, handler: GetJsonSchemaHandler
2468 ) -> JsonSchemaValue:
-> 2469 json_schema = {**handler(core_schema_or_field), **json_schema_update}
2470 add_json_schema_extra(json_schema, json_schema_extra)
2471 return json_schema

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:511, in GenerateJsonSchema.generate_inner..handler_func(schema_or_field)
509 if _core_utils.is_core_schema(schema_or_field) or _core_utils.is_core_schema_field(schema_or_field):
510 generate_for_schema_type = self._schema_type_to_method[schema_or_field['type']]
--> 511 json_schema = generate_for_schema_type(schema_or_field)
512 else:
513 raise TypeError(f'Unexpected schema type: schema={schema_or_field}')

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:1386, in GenerateJsonSchema.model_field_schema(self, schema)
1377 def model_field_schema(self, schema: core_schema.ModelField) -> JsonSchemaValue:
1378 """Generates a JSON schema that matches a schema that defines a model field.
1379
1380 Args:
(...)
1384 The generated JSON schema.
1385 """
-> 1386 return self.generate_inner(schema['schema'])

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:552, in GenerateJsonSchema.generate_inner(self, schema)
548 return json_schema
550 current_handler = _schema_generation_shared.GenerateJsonSchemaHandler(self, new_handler_func)
--> 552 json_schema = current_handler(schema)
553 if _core_utils.is_core_schema(schema):
554 json_schema = populate_defs(schema, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:511, in GenerateJsonSchema.generate_inner..handler_func(schema_or_field)
509 if _core_utils.is_core_schema(schema_or_field) or _core_utils.is_core_schema_field(schema_or_field):
510 generate_for_schema_type = self._schema_type_to_method[schema_or_field['type']]
--> 511 json_schema = generate_for_schema_type(schema_or_field)
512 else:
513 raise TypeError(f'Unexpected schema type: schema={schema_or_field}')

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:1042, in GenerateJsonSchema.default_schema(self, schema)
1033 def default_schema(self, schema: core_schema.WithDefaultSchema) -> JsonSchemaValue:
1034 """Generates a JSON schema that matches a schema with a default value.
1035
1036 Args:
(...)
1040 The generated JSON schema.
1041 """
-> 1042 json_schema = self.generate_inner(schema['schema'])
1044 if 'default' not in schema:
1045 return json_schema

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:552, in GenerateJsonSchema.generate_inner(self, schema)
548 return json_schema
550 current_handler = _schema_generation_shared.GenerateJsonSchemaHandler(self, new_handler_func)
--> 552 json_schema = current_handler(schema)
553 if _core_utils.is_core_schema(schema):
554 json_schema = populate_defs(schema, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:527, in GenerateJsonSchema.generate_inner..new_handler_func(schema_or_field, current_handler, js_modify_function)
522 def new_handler_func(
523 schema_or_field: CoreSchemaOrField,
524 current_handler: GetJsonSchemaHandler = current_handler,
525 js_modify_function: GetJsonSchemaFunction = js_modify_function,
526 ) -> JsonSchemaValue:
--> 527 json_schema = js_modify_function(schema_or_field, current_handler)
528 if _core_utils.is_core_schema(schema_or_field):
529 json_schema = populate_defs(schema_or_field, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\main.py:697, in BaseModel.get_pydantic_json_schema(cls, core_schema, handler)
673 @classmethod
674 def get_pydantic_json_schema(
675 cls,
(...)
678 /,
679 ) -> JsonSchemaValue:
680 """Hook into generating the model's JSON schema.
681
682 Args:
(...)
695 A JSON schema, as a Python object.
696 """
--> 697 return handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:527, in GenerateJsonSchema.generate_inner..new_handler_func(schema_or_field, current_handler, js_modify_function)
522 def new_handler_func(
523 schema_or_field: CoreSchemaOrField,
524 current_handler: GetJsonSchemaHandler = current_handler,
525 js_modify_function: GetJsonSchemaFunction = js_modify_function,
526 ) -> JsonSchemaValue:
--> 527 json_schema = js_modify_function(schema_or_field, current_handler)
528 if _core_utils.is_core_schema(schema_or_field):
529 json_schema = populate_defs(schema_or_field, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_generate_schema.py:272, in modify_model_json_schema(schema_or_field, handler, cls, title)
268 from ._dataclasses import is_builtin_dataclass
270 BaseModel = import_cached_base_model()
--> 272 json_schema = handler(schema_or_field)
273 original_schema = handler.resolve_ref_schema(json_schema)
274 if title is not None:

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:511, in GenerateJsonSchema.generate_inner..handler_func(schema_or_field)
509 if _core_utils.is_core_schema(schema_or_field) or _core_utils.is_core_schema_field(schema_or_field):
510 generate_for_schema_type = self._schema_type_to_method[schema_or_field['type']]
--> 511 json_schema = generate_for_schema_type(schema_or_field)
512 else:
513 raise TypeError(f'Unexpected schema type: schema={schema_or_field}')

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:1415, in GenerateJsonSchema.model_schema(self, schema)
1412 title = config.get('title')
1414 with self._config_wrapper_stack.push(config):
-> 1415 json_schema = self.generate_inner(schema['schema'])
1417 json_schema_extra = config.get('json_schema_extra')
1418 if cls.pydantic_root_model:

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:552, in GenerateJsonSchema.generate_inner(self, schema)
548 return json_schema
550 current_handler = _schema_generation_shared.GenerateJsonSchemaHandler(self, new_handler_func)
--> 552 json_schema = current_handler(schema)
553 if _core_utils.is_core_schema(schema):
554 json_schema = populate_defs(schema, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:511, in GenerateJsonSchema.generate_inner..handler_func(schema_or_field)
509 if _core_utils.is_core_schema(schema_or_field) or _core_utils.is_core_schema_field(schema_or_field):
510 generate_for_schema_type = self._schema_type_to_method[schema_or_field['type']]
--> 511 json_schema = generate_for_schema_type(schema_or_field)
512 else:
513 raise TypeError(f'Unexpected schema type: schema={schema_or_field}')

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:1510, in GenerateJsonSchema.model_fields_schema(self, schema)
1508 if self.mode == 'serialization':
1509 named_required_fields.extend(self._name_required_computed_fields(schema.get('computed_fields', [])))
-> 1510 json_schema = self._named_required_fields_schema(named_required_fields)
1511 extras_schema = schema.get('extras_schema', None)
1512 if extras_schema is not None:

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:1318, in GenerateJsonSchema._named_required_fields_schema(self, named_required_fields)
1316 name = self._get_alias_name(field, name)
1317 try:
-> 1318 field_json_schema = self.generate_inner(field).copy()
1319 except PydanticOmit:
1320 continue

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:552, in GenerateJsonSchema.generate_inner(self, schema)
548 return json_schema
550 current_handler = _schema_generation_shared.GenerateJsonSchemaHandler(self, new_handler_func)
--> 552 json_schema = current_handler(schema)
553 if _core_utils.is_core_schema(schema):
554 json_schema = populate_defs(schema, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:545, in GenerateJsonSchema.generate_inner..new_handler_func(schema_or_field, current_handler, js_modify_function)
540 def new_handler_func(
541 schema_or_field: CoreSchemaOrField,
542 current_handler: GetJsonSchemaHandler = current_handler,
543 js_modify_function: GetJsonSchemaFunction = js_modify_function,
544 ) -> JsonSchemaValue:
--> 545 json_schema = js_modify_function(schema_or_field, current_handler)
546 if _core_utils.is_core_schema(schema_or_field):
547 json_schema = populate_defs(schema_or_field, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_generate_schema.py:2469, in get_json_schema_update_func..json_schema_update_func(core_schema_or_field, handler)
2466 def json_schema_update_func(
2467 core_schema_or_field: CoreSchemaOrField, handler: GetJsonSchemaHandler
2468 ) -> JsonSchemaValue:
-> 2469 json_schema = {**handler(core_schema_or_field), **json_schema_update}
2470 add_json_schema_extra(json_schema, json_schema_extra)
2471 return json_schema

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:511, in GenerateJsonSchema.generate_inner..handler_func(schema_or_field)
509 if _core_utils.is_core_schema(schema_or_field) or _core_utils.is_core_schema_field(schema_or_field):
510 generate_for_schema_type = self._schema_type_to_method[schema_or_field['type']]
--> 511 json_schema = generate_for_schema_type(schema_or_field)
512 else:
513 raise TypeError(f'Unexpected schema type: schema={schema_or_field}')

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:1386, in GenerateJsonSchema.model_field_schema(self, schema)
1377 def model_field_schema(self, schema: core_schema.ModelField) -> JsonSchemaValue:
1378 """Generates a JSON schema that matches a schema that defines a model field.
1379
1380 Args:
(...)
1384 The generated JSON schema.
1385 """
-> 1386 return self.generate_inner(schema['schema'])

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:552, in GenerateJsonSchema.generate_inner(self, schema)
548 return json_schema
550 current_handler = _schema_generation_shared.GenerateJsonSchemaHandler(self, new_handler_func)
--> 552 json_schema = current_handler(schema)
553 if _core_utils.is_core_schema(schema):
554 json_schema = populate_defs(schema, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:511, in GenerateJsonSchema.generate_inner..handler_func(schema_or_field)
509 if _core_utils.is_core_schema(schema_or_field) or _core_utils.is_core_schema_field(schema_or_field):
510 generate_for_schema_type = self._schema_type_to_method[schema_or_field['type']]
--> 511 json_schema = generate_for_schema_type(schema_or_field)
512 else:
513 raise TypeError(f'Unexpected schema type: schema={schema_or_field}')

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:1042, in GenerateJsonSchema.default_schema(self, schema)
1033 def default_schema(self, schema: core_schema.WithDefaultSchema) -> JsonSchemaValue:
1034 """Generates a JSON schema that matches a schema with a default value.
1035
1036 Args:
(...)
1040 The generated JSON schema.
1041 """
-> 1042 json_schema = self.generate_inner(schema['schema'])
1044 if 'default' not in schema:
1045 return json_schema

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:552, in GenerateJsonSchema.generate_inner(self, schema)
548 return json_schema
550 current_handler = _schema_generation_shared.GenerateJsonSchemaHandler(self, new_handler_func)
--> 552 json_schema = current_handler(schema)
553 if _core_utils.is_core_schema(schema):
554 json_schema = populate_defs(schema, json_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic_internal_schema_generation_shared.py:37, in GenerateJsonSchemaHandler.call(self, core_schema)
36 def call(self, core_schema: CoreSchemaOrField, /) -> JsonSchemaValue:
---> 37 return self.handler(core_schema)

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:511, in GenerateJsonSchema.generate_inner..handler_func(schema_or_field)
509 if _core_utils.is_core_schema(schema_or_field) or _core_utils.is_core_schema_field(schema_or_field):
510 generate_for_schema_type = self._schema_type_to_method[schema_or_field['type']]
--> 511 json_schema = generate_for_schema_type(schema_or_field)
512 else:
513 raise TypeError(f'Unexpected schema type: schema={schema_or_field}')

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:835, in GenerateJsonSchema.callable_schema(self, schema)
824 def callable_schema(self, schema: core_schema.CallableSchema) -> JsonSchemaValue:
825 """Generates a JSON schema that matches a callable value.
826
827 Unless overridden in a subclass, this raises an error.
(...)
833 The generated JSON schema.
834 """
--> 835 return self.handle_invalid_for_json_schema(schema, 'core_schema.CallableSchema')

File C:\Projects\AI\ll-rag.venv\lib\site-packages\pydantic\json_schema.py:2185, in GenerateJsonSchema.handle_invalid_for_json_schema(self, schema, error_info)
2184 def handle_invalid_for_json_schema(self, schema: CoreSchemaOrField, error_info: str) -> JsonSchemaValue:
-> 2185 raise PydanticInvalidForJsonSchema(f'Cannot generate a JsonSchema for {error_info}')

PydanticInvalidForJsonSchema: Cannot generate a JsonSchema for core_schema.CallableSchema

For further information visit https://errors.pydantic.dev/2.9/u/invalid-for-json-schema

Description

The code produces error PydanticInvalidForJsonSchema: Cannot generate a JsonSchema for core_schema.CallableSchema`
So when I try to use Context in my chain the LangServe - it raises error when I try to go to playground

System Info

System Information

OS: Windows
OS Version: 10.0.19045
Python Version: 3.10.0 (tags/v3.10.0:b494f59, Oct 4 2021, 19:00:18) [MSC v.1929 64 bit (AMD64)]

Package Information

langchain_core: 0.3.8
langchain: 0.3.1
langchain_community: 0.3.1
langsmith: 0.1.130
langchain_chroma: 0.1.4
langchain_experimental: 0.3.2
langchain_openai: 0.2.1
langchain_text_splitters: 0.3.0
langchainhub: 0.1.21
langserve: 0.3.0

Optional packages not installed

langgraph

Other Dependencies

aiohttp: 3.10.8
async-timeout: 4.0.3
chromadb: 0.5.11
dataclasses-json: 0.6.7
fastapi: 0.115.0
httpx: 0.27.2
jsonpatch: 1.33
numpy: 1.26.4
openai: 1.46.1
orjson: 3.10.7
packaging: 24.1
pydantic: 2.9.2
pydantic-settings: 2.5.2
PyYAML: 6.0.2
requests: 2.32.3
requests-toolbelt: 1.0.0
SQLAlchemy: 2.0.35
sse-starlette: 1.8.2
tenacity: 8.5.0
tiktoken: 0.7.0
types-requests: 2.32.0.20240914
typing-extensions: 4.12.2
@dosubot dosubot bot added Ɑ: core Related to langchain-core 🤖:bug Related to a bug, vulnerability, unexpected error with an existing feature labels Oct 17, 2024
@eyurtsev
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Use with_types to specify the schema manually as a work-around. schema inference fails for more complex LCEL chains, and at the moment we're not prioritizing fixing all of the edge cases

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🤖:bug Related to a bug, vulnerability, unexpected error with an existing feature Ɑ: core Related to langchain-core
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@IlyaBokovenko @eyurtsev