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from __future__ import annotations
from typing import TYPE_CHECKING, Sequence
from airflow.models import BaseOperator
from airflow.providers.amazon.aws.hooks.ec2 import EC2Hook
if TYPE_CHECKING:
from airflow.utils.context import Context
[docs]class EC2StartInstanceOperator(BaseOperator):
"""
Start AWS EC2 instance using boto3.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:EC2StartInstanceOperator`
:param instance_id: id of the AWS EC2 instance
:param aws_conn_id: aws connection to use
:param region_name: (optional) aws region name associated with the client
:param check_interval: time in seconds that the job should wait in
between each instance state checks until operation is completed
"""
[docs] template_fields: Sequence[str] = ("instance_id", "region_name")
def __init__(
self,
*,
instance_id: str,
aws_conn_id: str = "aws_default",
region_name: str | None = None,
check_interval: float = 15,
**kwargs,
):
super().__init__(**kwargs)
self.instance_id = instance_id
self.aws_conn_id = aws_conn_id
self.region_name = region_name
self.check_interval = check_interval
[docs] def execute(self, context: Context):
ec2_hook = EC2Hook(aws_conn_id=self.aws_conn_id, region_name=self.region_name)
self.log.info("Starting EC2 instance %s", self.instance_id)
instance = ec2_hook.get_instance(instance_id=self.instance_id)
instance.start()
ec2_hook.wait_for_state(
instance_id=self.instance_id,
target_state="running",
check_interval=self.check_interval,
)
[docs]class EC2StopInstanceOperator(BaseOperator):
"""
Stop AWS EC2 instance using boto3.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:EC2StopInstanceOperator`
:param instance_id: id of the AWS EC2 instance
:param aws_conn_id: aws connection to use
:param region_name: (optional) aws region name associated with the client
:param check_interval: time in seconds that the job should wait in
between each instance state checks until operation is completed
"""
[docs] template_fields: Sequence[str] = ("instance_id", "region_name")
def __init__(
self,
*,
instance_id: str,
aws_conn_id: str = "aws_default",
region_name: str | None = None,
check_interval: float = 15,
**kwargs,
):
super().__init__(**kwargs)
self.instance_id = instance_id
self.aws_conn_id = aws_conn_id
self.region_name = region_name
self.check_interval = check_interval
[docs] def execute(self, context: Context):
ec2_hook = EC2Hook(aws_conn_id=self.aws_conn_id, region_name=self.region_name)
self.log.info("Stopping EC2 instance %s", self.instance_id)
instance = ec2_hook.get_instance(instance_id=self.instance_id)
instance.stop()
ec2_hook.wait_for_state(
instance_id=self.instance_id,
target_state="stopped",
check_interval=self.check_interval,
)
[docs]class EC2CreateInstanceOperator(BaseOperator):
"""
Create and start a specified number of EC2 Instances using boto3
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:EC2CreateInstanceOperator`
:param image_id: ID of the AMI used to create the instance.
:param max_count: Maximum number of instances to launch. Defaults to 1.
:param min_count: Minimum number of instances to launch. Defaults to 1.
:param aws_conn_id: AWS connection to use
:param region_name: AWS region name associated with the client.
:param poll_interval: Number of seconds to wait before attempting to
check state of instance. Only used if wait_for_completion is True. Default is 20.
:param max_attempts: Maximum number of attempts when checking state of instance.
Only used if wait_for_completion is True. Default is 20.
:param config: Dictionary for arbitrary parameters to the boto3 run_instances call.
:param wait_for_completion: If True, the operator will wait for the instance to be
in the `running` state before returning.
"""
[docs] template_fields: Sequence[str] = (
"image_id",
"max_count",
"min_count",
"aws_conn_id",
"region_name",
"config",
"wait_for_completion",
)
def __init__(
self,
image_id: str,
max_count: int = 1,
min_count: int = 1,
aws_conn_id: str = "aws_default",
region_name: str | None = None,
poll_interval: int = 20,
max_attempts: int = 20,
config: dict | None = None,
wait_for_completion: bool = False,
**kwargs,
):
super().__init__(**kwargs)
self.image_id = image_id
self.max_count = max_count
self.min_count = min_count
self.aws_conn_id = aws_conn_id
self.region_name = region_name
self.poll_interval = poll_interval
self.max_attempts = max_attempts
self.config = config or {}
self.wait_for_completion = wait_for_completion
[docs] def execute(self, context: Context):
ec2_hook = EC2Hook(aws_conn_id=self.aws_conn_id, region_name=self.region_name, api_type="client_type")
instances = ec2_hook.conn.run_instances(
ImageId=self.image_id,
MinCount=self.min_count,
MaxCount=self.max_count,
**self.config,
)["Instances"]
instance_ids = []
for instance in instances:
instance_ids.append(instance["InstanceId"])
self.log.info("Created EC2 instance %s", instance["InstanceId"])
if self.wait_for_completion:
ec2_hook.get_waiter("instance_running").wait(
InstanceIds=[instance["InstanceId"]],
WaiterConfig={
"Delay": self.poll_interval,
"MaxAttempts": self.max_attempts,
},
)
return instance_ids
[docs]class EC2TerminateInstanceOperator(BaseOperator):
"""
Terminate EC2 Instances using boto3
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:EC2TerminateInstanceOperator`
:param instance_id: ID of the instance to be terminated.
:param aws_conn_id: AWS connection to use
:param region_name: AWS region name associated with the client.
:param poll_interval: Number of seconds to wait before attempting to
check state of instance. Only used if wait_for_completion is True. Default is 20.
:param max_attempts: Maximum number of attempts when checking state of instance.
Only used if wait_for_completion is True. Default is 20.
:param wait_for_completion: If True, the operator will wait for the instance to be
in the `terminated` state before returning.
"""
[docs] template_fields: Sequence[str] = ("instance_ids", "region_name", "aws_conn_id", "wait_for_completion")
def __init__(
self,
instance_ids: str | list[str],
aws_conn_id: str = "aws_default",
region_name: str | None = None,
poll_interval: int = 20,
max_attempts: int = 20,
wait_for_completion: bool = False,
**kwargs,
):
super().__init__(**kwargs)
self.instance_ids = instance_ids
self.aws_conn_id = aws_conn_id
self.region_name = region_name
self.poll_interval = poll_interval
self.max_attempts = max_attempts
self.wait_for_completion = wait_for_completion
[docs] def execute(self, context: Context):
if isinstance(self.instance_ids, str):
self.instance_ids = [self.instance_ids]
ec2_hook = EC2Hook(aws_conn_id=self.aws_conn_id, region_name=self.region_name, api_type="client_type")
ec2_hook.conn.terminate_instances(InstanceIds=self.instance_ids)
for instance_id in self.instance_ids:
self.log.info("Terminating EC2 instance %s", instance_id)
if self.wait_for_completion:
ec2_hook.get_waiter("instance_terminated").wait(
InstanceIds=[instance_id],
WaiterConfig={
"Delay": self.poll_interval,
"MaxAttempts": self.max_attempts,
},
)
