marshmallow schema validation

I have the following Joi schema validation in my node project, which I am planning to convert into python using marshmallow library.

Joi Schema:

aws_access_key: Joi.string().label('AWS ACCESS KEY').required().token().min(20),
aws_secret_key: Joi.string().label('AWS SECRET KEY').required().base64().min(40),
encryption: Joi.string().label('AWS S3 server-side encryption').valid('SSE_S3', 'SSE_KMS', 'CSE_KMS').optional(),
kmsKey: Joi.string().label('AWS S3 server-side encryption KMS key').when('encryption', is: Joi.valid('SSE_KMS', 'CSE_KMS'), then: Joi.string().required() )


Here is what I did so far using marshmallow in python

from marshmallow import Schema, fields
from marshmallow.validate import OneOf, Length


class AWSSchema(Schema):
aws_access_key = fields.String("title", required=True, validate=Length(min=20))
aws_secret_key = fields.String(required=True, validate=Length(min=40))
encryption = fields.String(required=False, validate=OneOf(['SSE_S3', 'SSE_KMS', 'CSE_KMS']))
kmskey = fields.String(validate=lambda obj: fields.String(required=True) if obj['encryption'] in ('SSE_KMS', 'CSE_KMS') else fields.String(required=False))


demo =
"aws_access_key": "AKXXXXXXXXXXXXXXXXXXX",
"aws_secret_key": "YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY",
"encryption_type": "SSE_KMS"



schema = AWSSchema()
print(schema.dump(demo))


if encryption_type value is set to SSE_KMS or CSE_KMS, then I need kmskey field should be required field. But the validation is not working as expected. Any help is appreciated?

0

Thanks for contributing an answer to Stack Overflow!

But avoid …

To learn more, see our tips on writing great answers.

Required, but never shown

Required, but never shown

By clicking "Post Your Answer", you agree to our terms of service, privacy policy and cookie policy