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Use base aws classes in AWS Step Functions Operators/Sensors/Triggers (
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Taragolis authored Dec 28, 2023
1 parent a3e5a97 commit 22294ab
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Showing 6 changed files with 190 additions and 178 deletions.
63 changes: 33 additions & 30 deletions airflow/providers/amazon/aws/operators/step_function.py
Original file line number Diff line number Diff line change
Expand Up @@ -22,15 +22,16 @@

from airflow.configuration import conf
from airflow.exceptions import AirflowException
from airflow.models import BaseOperator
from airflow.providers.amazon.aws.hooks.step_function import StepFunctionHook
from airflow.providers.amazon.aws.operators.base_aws import AwsBaseOperator
from airflow.providers.amazon.aws.triggers.step_function import StepFunctionsExecutionCompleteTrigger
from airflow.providers.amazon.aws.utils.mixins import aws_template_fields

if TYPE_CHECKING:
from airflow.utils.context import Context


class StepFunctionStartExecutionOperator(BaseOperator):
class StepFunctionStartExecutionOperator(AwsBaseOperator[StepFunctionHook]):
"""
An Operator that begins execution of an AWS Step Function State Machine.
Expand All @@ -50,10 +51,20 @@ class StepFunctionStartExecutionOperator(BaseOperator):
:param deferrable: If True, the operator will wait asynchronously for the job to complete.
This implies waiting for completion. This mode requires aiobotocore module to be installed.
(default: False, but can be overridden in config file by setting default_deferrable to True)
:param aws_conn_id: The Airflow connection used for AWS credentials.
If this is ``None`` or empty then the default boto3 behaviour is used. If
running Airflow in a distributed manner and aws_conn_id is None or
empty, then default boto3 configuration would be used (and must be
maintained on each worker node).
:param region_name: AWS region_name. If not specified then the default boto3 behaviour is used.
:param verify: Whether or not to verify SSL certificates. See:
https://boto3.amazonaws.com/v1/documentation/api/latest/reference/core/session.html
:param botocore_config: Configuration dictionary (key-values) for botocore client. See:
https://botocore.amazonaws.com/v1/documentation/api/latest/reference/config.html
"""

template_fields: Sequence[str] = ("state_machine_arn", "name", "input")
template_ext: Sequence[str] = ()
aws_hook_class = StepFunctionHook
template_fields: Sequence[str] = aws_template_fields("state_machine_arn", "name", "input")
ui_color = "#f9c915"

def __init__(
Expand All @@ -62,8 +73,6 @@ def __init__(
state_machine_arn: str,
name: str | None = None,
state_machine_input: dict | str | None = None,
aws_conn_id: str = "aws_default",
region_name: str | None = None,
waiter_max_attempts: int = 30,
waiter_delay: int = 60,
deferrable: bool = conf.getboolean("operators", "default_deferrable", fallback=False),
Expand All @@ -73,18 +82,12 @@ def __init__(
self.state_machine_arn = state_machine_arn
self.name = name
self.input = state_machine_input
self.aws_conn_id = aws_conn_id
self.region_name = region_name
self.waiter_delay = waiter_delay
self.waiter_max_attempts = waiter_max_attempts
self.deferrable = deferrable

def execute(self, context: Context):
hook = StepFunctionHook(aws_conn_id=self.aws_conn_id, region_name=self.region_name)

execution_arn = hook.start_execution(self.state_machine_arn, self.name, self.input)

if execution_arn is None:
if not (execution_arn := self.hook.start_execution(self.state_machine_arn, self.name, self.input)):
raise AirflowException(f"Failed to start State Machine execution for: {self.state_machine_arn}")

self.log.info("Started State Machine execution for %s: %s", self.state_machine_arn, execution_arn)
Expand All @@ -96,6 +99,8 @@ def execute(self, context: Context):
waiter_max_attempts=self.waiter_max_attempts,
aws_conn_id=self.aws_conn_id,
region_name=self.region_name,
botocore_config=self.botocore_config,
verify=self.verify,
),
method_name="execute_complete",
timeout=timedelta(seconds=self.waiter_max_attempts * self.waiter_delay),
Expand All @@ -110,7 +115,7 @@ def execute_complete(self, context: Context, event: dict[str, Any] | None = None
return event["execution_arn"]


class StepFunctionGetExecutionOutputOperator(BaseOperator):
class StepFunctionGetExecutionOutputOperator(AwsBaseOperator[StepFunctionHook]):
"""
An Operator that returns the output of an AWS Step Function State Machine execution.
Expand All @@ -121,30 +126,28 @@ class StepFunctionGetExecutionOutputOperator(BaseOperator):
:ref:`howto/operator:StepFunctionGetExecutionOutputOperator`
:param execution_arn: ARN of the Step Function State Machine Execution
:param aws_conn_id: aws connection to use, defaults to 'aws_default'
:param aws_conn_id: The Airflow connection used for AWS credentials.
If this is ``None`` or empty then the default boto3 behaviour is used. If
running Airflow in a distributed manner and aws_conn_id is None or
empty, then default boto3 configuration would be used (and must be
maintained on each worker node).
:param region_name: AWS region_name. If not specified then the default boto3 behaviour is used.
:param verify: Whether or not to verify SSL certificates. See:
https://boto3.amazonaws.com/v1/documentation/api/latest/reference/core/session.html
:param botocore_config: Configuration dictionary (key-values) for botocore client. See:
https://botocore.amazonaws.com/v1/documentation/api/latest/reference/config.html
"""

template_fields: Sequence[str] = ("execution_arn",)
template_ext: Sequence[str] = ()
aws_hook_class = StepFunctionHook
template_fields: Sequence[str] = aws_template_fields("execution_arn")
ui_color = "#f9c915"

def __init__(
self,
*,
execution_arn: str,
aws_conn_id: str = "aws_default",
region_name: str | None = None,
**kwargs,
):
def __init__(self, *, execution_arn: str, **kwargs):
super().__init__(**kwargs)
self.execution_arn = execution_arn
self.aws_conn_id = aws_conn_id
self.region_name = region_name

def execute(self, context: Context):
hook = StepFunctionHook(aws_conn_id=self.aws_conn_id, region_name=self.region_name)

execution_status = hook.describe_execution(self.execution_arn)
execution_status = self.hook.describe_execution(self.execution_arn)
response = None
if "output" in execution_status:
response = json.loads(execution_status["output"])
Expand Down
36 changes: 16 additions & 20 deletions airflow/providers/amazon/aws/sensors/step_function.py
Original file line number Diff line number Diff line change
Expand Up @@ -17,20 +17,20 @@
from __future__ import annotations

import json
from functools import cached_property
from typing import TYPE_CHECKING, Sequence

from deprecated import deprecated

from airflow.exceptions import AirflowException, AirflowProviderDeprecationWarning, AirflowSkipException
from airflow.providers.amazon.aws.hooks.step_function import StepFunctionHook
from airflow.sensors.base import BaseSensorOperator
from airflow.providers.amazon.aws.sensors.base_aws import AwsBaseSensor
from airflow.providers.amazon.aws.utils.mixins import aws_template_fields

if TYPE_CHECKING:
from airflow.utils.context import Context


class StepFunctionExecutionSensor(BaseSensorOperator):
class StepFunctionExecutionSensor(AwsBaseSensor[StepFunctionHook]):
"""
Poll the Step Function State Machine Execution until it reaches a terminal state; fails if the task fails.
Expand All @@ -42,7 +42,16 @@ class StepFunctionExecutionSensor(BaseSensorOperator):
:ref:`howto/sensor:StepFunctionExecutionSensor`
:param execution_arn: execution_arn to check the state of
:param aws_conn_id: aws connection to use, defaults to 'aws_default'
:param aws_conn_id: The Airflow connection used for AWS credentials.
If this is ``None`` or empty then the default boto3 behaviour is used. If
running Airflow in a distributed manner and aws_conn_id is None or
empty, then default boto3 configuration would be used (and must be
maintained on each worker node).
:param region_name: AWS region_name. If not specified then the default boto3 behaviour is used.
:param verify: Whether or not to verify SSL certificates. See:
https://boto3.amazonaws.com/v1/documentation/api/latest/reference/core/session.html
:param botocore_config: Configuration dictionary (key-values) for botocore client. See:
https://botocore.amazonaws.com/v1/documentation/api/latest/reference/config.html
"""

INTERMEDIATE_STATES = ("RUNNING",)
Expand All @@ -53,22 +62,13 @@ class StepFunctionExecutionSensor(BaseSensorOperator):
)
SUCCESS_STATES = ("SUCCEEDED",)

template_fields: Sequence[str] = ("execution_arn",)
template_ext: Sequence[str] = ()
aws_hook_class = StepFunctionHook
template_fields: Sequence[str] = aws_template_fields("execution_arn")
ui_color = "#66c3ff"

def __init__(
self,
*,
execution_arn: str,
aws_conn_id: str = "aws_default",
region_name: str | None = None,
**kwargs,
):
def __init__(self, *, execution_arn: str, **kwargs):
super().__init__(**kwargs)
self.execution_arn = execution_arn
self.aws_conn_id = aws_conn_id
self.region_name = region_name

def poke(self, context: Context):
execution_status = self.hook.describe_execution(self.execution_arn)
Expand All @@ -93,7 +93,3 @@ def poke(self, context: Context):
def get_hook(self) -> StepFunctionHook:
"""Create and return a StepFunctionHook."""
return self.hook

@cached_property
def hook(self) -> StepFunctionHook:
return StepFunctionHook(aws_conn_id=self.aws_conn_id, region_name=self.region_name)
9 changes: 8 additions & 1 deletion airflow/providers/amazon/aws/triggers/step_function.py
Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,7 @@ def __init__(
waiter_max_attempts: int = 30,
aws_conn_id: str | None = None,
region_name: str | None = None,
**kwargs,
) -> None:
super().__init__(
serialized_fields={"execution_arn": execution_arn, "region_name": region_name},
Expand All @@ -56,7 +57,13 @@ def __init__(
waiter_delay=waiter_delay,
waiter_max_attempts=waiter_max_attempts,
aws_conn_id=aws_conn_id,
**kwargs,
)

def hook(self) -> AwsGenericHook:
return StepFunctionHook(aws_conn_id=self.aws_conn_id, region_name=self.region_name)
return StepFunctionHook(
aws_conn_id=self.aws_conn_id,
region_name=self.region_name,
verify=self.verify,
config=self.botocore_config,
)
Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,11 @@ Prerequisite Tasks

.. include:: ../_partials/prerequisite_tasks.rst

Generic Parameters
------------------

.. include:: ../_partials/generic_parameters.rst

Operators
---------

Expand Down
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