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import base64
import logging
from moto.stepfunctions.parser.api import ValidationException
from moto.stepfunctions.parser.utils import to_bytes, to_str
LOG = logging.getLogger(__name__)
def get_next_page_token_from_arn(resource_arn: str) -> str:
return to_str(base64.b64encode(to_bytes(resource_arn)))
_DEFAULT_SFN_MAX_RESULTS: int = 100
def normalise_max_results(max_results: int = 100) -> int:
if not max_results:
return _DEFAULT_SFN_MAX_RESULTS
return max_results
def assert_pagination_parameters_valid(
max_results: int,
next_token: str,
next_token_length_limit: int = 1024,
max_results_upper_limit: int = 1000,
) -> tuple[int, str]:
validation_errors = []
if isinstance(max_results, int) and max_results > max_results_upper_limit:
validation_errors.append(
f"Value '{max_results}' at 'maxResults' failed to satisfy constraint: "
f"Member must have value less than or equal to {max_results_upper_limit}"
)
if isinstance(next_token, str) and len(next_token) > next_token_length_limit:
validation_errors.append(
f"Value '{next_token}' at 'nextToken' failed to satisfy constraint: "
f"Member must have length less than or equal to {next_token_length_limit}"
)
if validation_errors:
errors_message = "; ".join(validation_errors)
message = f"{len(validation_errors)} validation {'errors' if len(validation_errors) > 1 else 'error'} detected: {errors_message}"
raise ValidationException(message)
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