InvalidModelTypeError: Input model must implement BaseModel

[NikolaNon]

I have a issue with parse function from aws_lambda_powertools.utilities.parser import parse.

When I call it locally in REPL it works, but inside a lambda function it keeps to raise a error
InvalidModelTypeError: Input model must implement BaseModel, model=<class 'utils.validation.EventModel'>

In lambda hanlder.py file I have add simple prints for my EventModel __mro__ and BaseModel is there.

from aws_lambda_powertools.utilities.parser import BaseModel, Field,

import EventModel

def handler(event, context):
    print(event)
    print(EventModel)
    print(EventModel.__mro__)
    print(EventModel.__dict__)
    ret = parse(event=event, model=EventModel)

The EventModel definition

class EventModel(BaseModel):
    version: str
    id: str
    detail_type: str = Field(..., alias='detail-type')
    source: str
    account: str
    time: str
    region: str
    resources: List[str]
    detail: Union[Dummy,
                  Dummy1,
                  Dummy2,
                  Dummy3,
                  Dummy4]
                  
class Dummy(BaseModel):
    status: Literal["KickoffPipelines"]
    pipeline: str

....

I intentionally hide real names of dummy models.

The error log with printed values:

<class 'utils.validation.EventModel'>
(<class 'utils.validation.EventModel'>, <class 'pydantic.main.BaseModel'>, <class 'pydantic.utils.Representation'>, <class 'object'>)
InvalidModelTypeError: Input model must implement BaseModel, model=<class 'utils.validation.EventModel'

P.S I have tried to use EventBridgeModel from aws_lambda_powertools.utilities.parser.models import EventBridgeModel but the error is the same.

from aws_lambda_powertools.utilities.parser.models import EventBridgeModel

class EventModel(EventBridgeModel):
    detail: Union[Dummy,
                  Dummy1,
                  Dummy2,
                  Dummy3,
                  Dummy4]

[NikolaNon]

The error occurred earlier but lambda only report last Traceback error massage.
So it so connected how lambda present the Traceback not with a aws_lambda_powertools

The issue was that my lambda was missing Policy cognito-idp:AdminGetUser

class Dummy(BaseModel):
    status: Literal["KickoffPipelines"]
    pipeline: str
    user_uuid :str 
    user_email  : str
    
    @root_validator
    def cognito_user_validation(cls, values):
        user_uuid, user_email = values.get('user_uuid'), values.get('user_email ')
        if validate_cognito_user(user_uuid, user_email):
            raise ValueError("User must be valid!Cognito user existence failed!")
        return values
        
        
def validate_cognito_user(user_uuid, user_email):
    try:
        response = CONGNITO_CLIENT.admin_get_user(
            UserPoolId=USER_POOL_ID,
            Username=user_uuid
        )
    except CONGNITO_CLIENT.exceptions.UserNotFoundException:
        msg = f"User name :{user_uuid} is not valid! Event will not be processed"
        raise UserNotExistsInCognitoPollException(msg)
    print(response)
    expected_email = [attribute["Value"] for attribute in response["UserAttributes"]
                      if attribute["Name"] == "email"][0]
    if user_email != expected_email:
        msg = f"User email :{user_email} is not valid! Event will not be processed"
        raise IncorrectEmailForUserInCognitoPollException(msg)