163 lines
7.3 KiB
Python
163 lines
7.3 KiB
Python
import boto
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import re
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from datetime import datetime
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from moto.core import BaseBackend
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from moto.core.utils import iso_8601_datetime_without_milliseconds
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from moto.sts.models import ACCOUNT_ID
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from uuid import uuid4
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from .exceptions import ExecutionDoesNotExist, InvalidArn, InvalidName, StateMachineDoesNotExist
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class StateMachine():
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def __init__(self, arn, name, definition, roleArn, tags=None):
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self.creation_date = iso_8601_datetime_without_milliseconds(datetime.now())
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self.arn = arn
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self.name = name
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self.definition = definition
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self.roleArn = roleArn
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self.tags = tags
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class Execution():
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def __init__(self, region_name, account_id, state_machine_name, execution_name, state_machine_arn):
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execution_arn = 'arn:aws:states:{}:{}:execution:{}:{}'
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execution_arn = execution_arn.format(region_name, account_id, state_machine_name, execution_name)
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self.execution_arn = execution_arn
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self.name = execution_name
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self.start_date = iso_8601_datetime_without_milliseconds(datetime.now())
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self.state_machine_arn = state_machine_arn
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self.status = 'RUNNING'
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self.stop_date = None
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def stop(self):
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self.status = 'SUCCEEDED'
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self.stop_date = iso_8601_datetime_without_milliseconds(datetime.now())
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class StepFunctionBackend(BaseBackend):
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# https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/stepfunctions.html#SFN.Client.create_state_machine
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# A name must not contain:
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# whitespace
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# brackets < > { } [ ]
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# wildcard characters ? *
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# special characters " # % \ ^ | ~ ` $ & , ; : /
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invalid_chars_for_name = [' ', '{', '}', '[', ']', '<', '>',
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'?', '*',
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'"', '#', '%', '\\', '^', '|', '~', '`', '$', '&', ',', ';', ':', '/']
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# control characters (U+0000-001F , U+007F-009F )
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invalid_unicodes_for_name = [u'\u0000', u'\u0001', u'\u0002', u'\u0003', u'\u0004',
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u'\u0005', u'\u0006', u'\u0007', u'\u0008', u'\u0009',
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u'\u000A', u'\u000B', u'\u000C', u'\u000D', u'\u000E', u'\u000F',
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u'\u0010', u'\u0011', u'\u0012', u'\u0013', u'\u0014',
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u'\u0015', u'\u0016', u'\u0017', u'\u0018', u'\u0019',
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u'\u001A', u'\u001B', u'\u001C', u'\u001D', u'\u001E', u'\u001F',
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u'\u007F',
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u'\u0080', u'\u0081', u'\u0082', u'\u0083', u'\u0084', u'\u0085',
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u'\u0086', u'\u0087', u'\u0088', u'\u0089',
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u'\u008A', u'\u008B', u'\u008C', u'\u008D', u'\u008E', u'\u008F',
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u'\u0090', u'\u0091', u'\u0092', u'\u0093', u'\u0094', u'\u0095',
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u'\u0096', u'\u0097', u'\u0098', u'\u0099',
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u'\u009A', u'\u009B', u'\u009C', u'\u009D', u'\u009E', u'\u009F']
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accepted_role_arn_format = re.compile('arn:aws:iam::(?P<account_id>[0-9]{12}):role/.+')
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accepted_mchn_arn_format = re.compile('arn:aws:states:[-0-9a-zA-Z]+:(?P<account_id>[0-9]{12}):stateMachine:.+')
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accepted_exec_arn_format = re.compile('arn:aws:states:[-0-9a-zA-Z]+:(?P<account_id>[0-9]{12}):execution:.+')
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def __init__(self, region_name):
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self.state_machines = []
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self.executions = []
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self.region_name = region_name
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self._account_id = None
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def create_state_machine(self, name, definition, roleArn, tags=None):
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self._validate_name(name)
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self._validate_role_arn(roleArn)
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arn = 'arn:aws:states:' + self.region_name + ':' + str(self._get_account_id()) + ':stateMachine:' + name
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try:
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return self.describe_state_machine(arn)
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except StateMachineDoesNotExist:
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state_machine = StateMachine(arn, name, definition, roleArn, tags)
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self.state_machines.append(state_machine)
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return state_machine
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def list_state_machines(self):
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return self.state_machines
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def describe_state_machine(self, arn):
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self._validate_machine_arn(arn)
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sm = next((x for x in self.state_machines if x.arn == arn), None)
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if not sm:
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raise StateMachineDoesNotExist("State Machine Does Not Exist: '" + arn + "'")
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return sm
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def delete_state_machine(self, arn):
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self._validate_machine_arn(arn)
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sm = next((x for x in self.state_machines if x.arn == arn), None)
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if sm:
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self.state_machines.remove(sm)
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def start_execution(self, state_machine_arn):
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state_machine_name = self.describe_state_machine(state_machine_arn).name
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execution = Execution(region_name=self.region_name,
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account_id=self._get_account_id(),
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state_machine_name=state_machine_name,
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execution_name=str(uuid4()),
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state_machine_arn=state_machine_arn)
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self.executions.append(execution)
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return execution
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def stop_execution(self, execution_arn):
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execution = next((x for x in self.executions if x.execution_arn == execution_arn), None)
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if not execution:
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raise ExecutionDoesNotExist("Execution Does Not Exist: '" + execution_arn + "'")
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execution.stop()
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return execution
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def list_executions(self, state_machine_arn):
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return [execution for execution in self.executions if execution.state_machine_arn == state_machine_arn]
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def describe_execution(self, arn):
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self._validate_execution_arn(arn)
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exctn = next((x for x in self.executions if x.execution_arn == arn), None)
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if not exctn:
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raise ExecutionDoesNotExist("Execution Does Not Exist: '" + arn + "'")
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return exctn
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def reset(self):
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region_name = self.region_name
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self.__dict__ = {}
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self.__init__(region_name)
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def _validate_name(self, name):
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if any(invalid_char in name for invalid_char in self.invalid_chars_for_name):
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raise InvalidName("Invalid Name: '" + name + "'")
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if any(name.find(char) >= 0 for char in self.invalid_unicodes_for_name):
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raise InvalidName("Invalid Name: '" + name + "'")
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def _validate_role_arn(self, role_arn):
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self._validate_arn(arn=role_arn,
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regex=self.accepted_role_arn_format,
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invalid_msg="Invalid Role Arn: '" + role_arn + "'")
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def _validate_machine_arn(self, machine_arn):
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self._validate_arn(arn=machine_arn,
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regex=self.accepted_mchn_arn_format,
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invalid_msg="Invalid Role Arn: '" + machine_arn + "'")
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def _validate_execution_arn(self, execution_arn):
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self._validate_arn(arn=execution_arn,
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regex=self.accepted_exec_arn_format,
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invalid_msg="Execution Does Not Exist: '" + execution_arn + "'")
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def _validate_arn(self, arn, regex, invalid_msg):
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match = regex.match(arn)
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if not arn or not match:
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raise InvalidArn(invalid_msg)
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def _get_account_id(self):
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return ACCOUNT_ID
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stepfunction_backends = {_region.name: StepFunctionBackend(_region.name) for _region in boto.awslambda.regions()}
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