Source code for tests.system.providers.amazon.aws.example_ec2
# Licensed to the Apache Software Foundation (ASF) under one# or more contributor license agreements. See the NOTICE file# distributed with this work for additional information# regarding copyright ownership. The ASF licenses this file# to you under the Apache License, Version 2.0 (the# "License"); you may not use this file except in compliance# with the License. You may obtain a copy of the License at## http://www.apache.org/licenses/LICENSE-2.0## Unless required by applicable law or agreed to in writing,# software distributed under the License is distributed on an# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY# KIND, either express or implied. See the License for the# specific language governing permissions and limitations# under the License.from__future__importannotationsfromdatetimeimportdatetimefromoperatorimportitemgetterimportboto3fromairflowimportDAGfromairflow.decoratorsimporttaskfromairflow.models.baseoperatorimportchainfromairflow.providers.amazon.aws.operators.ec2importEC2StartInstanceOperator,EC2StopInstanceOperatorfromairflow.providers.amazon.aws.sensors.ec2importEC2InstanceStateSensorfromairflow.utils.trigger_ruleimportTriggerRulefromtests.system.providers.amazon.aws.utilsimportENV_ID_KEY,SystemTestContextBuilder
def_get_latest_ami_id():"""Returns the AMI ID of the most recently-created Amazon Linux image"""# Amazon is retiring AL2 in 2023 and replacing it with Amazon Linux 2022.# This image prefix should be futureproof, but may need adjusting depending# on how they name the new images. This page should have AL2022 info when# it comes available: https://aws.amazon.com/linux/amazon-linux-2022/faqs/image_prefix="Amazon Linux*"images=boto3.client("ec2").describe_images(Filters=[{"Name":"description","Values":[image_prefix]}],Owners=["amazon"])# Sort on CreationDatesorted_images=sorted(images["Images"],key=itemgetter("CreationDate"),reverse=True)returnsorted_images[0]["ImageId"]@task
[docs]defcreate_key_pair(key_name:str):client=boto3.client("ec2")key_pair_id=client.create_key_pair(KeyName=key_name)["KeyName"]# Creating the key takes a very short but measurable time, preventing race condition:client.get_waiter("key_pair_exists").wait(KeyNames=[key_pair_id])returnkey_pair_id
@task
[docs]defcreate_instance(instance_name:str,key_pair_id:str):client=boto3.client("ec2")# Create the instanceinstance_id=client.run_instances(ImageId=_get_latest_ami_id(),MinCount=1,MaxCount=1,InstanceType="t2.micro",KeyName=key_pair_id,TagSpecifications=[{"ResourceType":"instance","Tags":[{"Key":"Name","Value":instance_name}]}],)["Instances"][0]["InstanceId"]# Wait for it to existwaiter=client.get_waiter("instance_exists")waiter.wait(InstanceIds=[instance_id])returninstance_id
env_id=test_context[ENV_ID_KEY]key_name=create_key_pair(key_name=f"{env_id}_key_pair")instance_id=create_instance(instance_name=f"{env_id}-instance",key_pair_id=key_name)# [START howto_operator_ec2_start_instance]start_instance=EC2StartInstanceOperator(task_id="start_instance",instance_id=instance_id,)# [END howto_operator_ec2_start_instance]# [START howto_sensor_ec2_instance_state]await_instance=EC2InstanceStateSensor(task_id="await_instance",instance_id=instance_id,target_state="running",)# [END howto_sensor_ec2_instance_state]# [START howto_operator_ec2_stop_instance]stop_instance=EC2StopInstanceOperator(task_id="stop_instance",instance_id=instance_id,)# [END howto_operator_ec2_stop_instance]stop_instance.trigger_rule=TriggerRule.ALL_DONEchain(# TEST SETUPtest_context,key_name,instance_id,# TEST BODYstart_instance,await_instance,stop_instance,# TEST TEARDOWNterminate_instance(instance_id),delete_key_pair(key_name),)fromtests.system.utils.watcherimportwatcher# This test needs watcher in order to properly mark success/failure# when "tearDown" task with trigger rule is part of the DAGlist(dag.tasks)>>watcher()fromtests.system.utilsimportget_test_run# noqa: E402# Needed to run the example DAG with pytest (see: tests/system/README.md#run_via_pytest)