const validationSchema = Joi.object({
    productId: Joi.number().required(),
    host: Joi.string().required(),
    username: Joi.string().required().description('username required field'),
    password: Joi.string().required().description('password required field'),
    rootFolder: Joi.string().required().description('rootFolder required field')
})
    .unknown()
    .required();

const { error, value: validatedPayload } = Joi.validate(payload, validationSchema);
if (error) {
    throw new Error(`${error}`);
}

console.log(validatedPayload);