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import abc
from typing import Final
from moto.stepfunctions.parser.api import ExecutionFailedEventDetails, HistoryEventType
from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
FailureEvent,
FailureEventException,
)
from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name import (
StatesErrorName,
)
from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
StatesErrorNameType,
)
from moto.stepfunctions.parser.asl.component.common.string.string_expression import (
StringJSONata,
StringSampler,
)
from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
from moto.stepfunctions.parser.asl.eval.environment import Environment
from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
DEFAULT_MAX_CONCURRENCY_VALUE: Final[int] = 0 # No limit.
class MaxConcurrencyDecl(EvalComponent, abc.ABC):
@abc.abstractmethod
def _eval_max_concurrency(self, env: Environment) -> int: ...
def _eval_body(self, env: Environment) -> None:
max_concurrency_value = self._eval_max_concurrency(env=env)
env.stack.append(max_concurrency_value)
class MaxConcurrency(MaxConcurrencyDecl):
max_concurrency_value: Final[int]
def __init__(self, num: int = DEFAULT_MAX_CONCURRENCY_VALUE):
super().__init__()
self.max_concurrency_value = num
def _eval_max_concurrency(self, env: Environment) -> int:
return self.max_concurrency_value
class MaxConcurrencyJSONata(MaxConcurrencyDecl):
string_jsonata: Final[StringJSONata]
def __init__(self, string_jsonata: StringJSONata):
super().__init__()
self.string_jsonata = string_jsonata
def _eval_max_concurrency(self, env: Environment) -> int:
self.string_jsonata.eval(env=env)
# TODO: add snapshot tests to verify AWS's behaviour about non integer values.
seconds = int(env.stack.pop())
return seconds
class MaxConcurrencyPath(MaxConcurrency):
string_sampler: Final[StringSampler]
def __init__(self, string_sampler: StringSampler):
super().__init__()
self.string_sampler = string_sampler
def _eval_max_concurrency(self, env: Environment) -> int:
self.string_sampler.eval(env=env)
max_concurrency_value = env.stack.pop()
if not isinstance(max_concurrency_value, int):
try:
max_concurrency_value = int(max_concurrency_value)
except Exception:
# Pass the wrong type forward.
pass
error_cause = None
if not isinstance(max_concurrency_value, int):
value_str = (
to_json_str(max_concurrency_value)
if not isinstance(max_concurrency_value, str)
else max_concurrency_value
)
error_cause = f'The MaxConcurrencyPath field refers to value "{value_str}" which is not a valid integer: {self.string_sampler.literal_value}'
elif max_concurrency_value < 0:
error_cause = f"Expected non-negative integer for MaxConcurrency, got '{max_concurrency_value}' instead."
if error_cause is not None:
raise FailureEventException(
failure_event=FailureEvent(
env=env,
error_name=StatesErrorName(typ=StatesErrorNameType.StatesRuntime),
event_type=HistoryEventType.ExecutionFailed,
event_details=EventDetails(
executionFailedEventDetails=ExecutionFailedEventDetails(
error=StatesErrorNameType.StatesRuntime.to_name(),
cause=error_cause,
)
),
)
)
return max_concurrency_value
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