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#
# http://www.apache.org/licenses/LICENSE-2.0
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from datetime import datetime
import boto3
from airflow import models
from airflow.decorators import task
from airflow.models.baseoperator import chain
from airflow.providers.amazon.aws.operators.datasync import DataSyncOperator
from airflow.providers.amazon.aws.operators.s3 import S3CreateBucketOperator, S3DeleteBucketOperator
from airflow.utils.trigger_rule import TriggerRule
from tests.system.providers.amazon.aws.utils import ENV_ID_KEY, SystemTestContextBuilder
[docs]DAG_ID = 'example_datasync'
# Externally fetched variables:
[docs]ROLE_ARN_KEY = 'ROLE_ARN'
[docs]sys_test_context_task = SystemTestContextBuilder().add_variable(ROLE_ARN_KEY).build()
[docs]def get_s3_bucket_arn(bucket_name):
return f'arn:aws:s3:::{bucket_name}'
[docs]def create_location(bucket_name, role_arn):
client = boto3.client('datasync')
response = client.create_location_s3(
Subdirectory='test',
S3BucketArn=get_s3_bucket_arn(bucket_name),
S3Config={
'BucketAccessRoleArn': role_arn,
},
)
return response['LocationArn']
@task
[docs]def create_source_location(bucket_source, role_arn):
return create_location(bucket_source, role_arn)
@task
[docs]def create_destination_location(bucket_destination, role_arn):
return create_location(bucket_destination, role_arn)
@task
[docs]def create_task(**kwargs):
client = boto3.client('datasync')
response = client.create_task(
SourceLocationArn=kwargs['ti'].xcom_pull('create_source_location'),
DestinationLocationArn=kwargs['ti'].xcom_pull('create_destination_location'),
)
return response['TaskArn']
@task(trigger_rule=TriggerRule.ALL_DONE)
[docs]def delete_task(task_arn):
client = boto3.client('datasync')
client.delete_task(
TaskArn=task_arn,
)
@task(trigger_rule=TriggerRule.ALL_DONE)
[docs]def delete_task_created_by_operator(**kwargs):
client = boto3.client('datasync')
client.delete_task(
TaskArn=kwargs['ti'].xcom_pull('create_and_execute_task')['TaskArn'],
)
@task(trigger_rule=TriggerRule.ALL_DONE)
[docs]def list_locations(bucket_source, bucket_destination):
client = boto3.client('datasync')
return client.list_locations(
Filters=[
{
'Name': 'LocationUri',
'Values': [
f's3://{bucket_source}/test/',
f's3://{bucket_destination}/test/',
f's3://{bucket_source}/test_create/',
f's3://{bucket_destination}/test_create/',
],
'Operator': 'In',
}
]
)
@task(trigger_rule=TriggerRule.ALL_DONE)
[docs]def delete_locations(locations):
client = boto3.client('datasync')
for location in locations['Locations']:
client.delete_location(
LocationArn=location['LocationArn'],
)
with models.DAG(
DAG_ID,
schedule_interval='@once',
start_date=datetime(2021, 1, 1),
catchup=False,
tags=['example'],
) as dag:
[docs] test_context = sys_test_context_task()
s3_bucket_source: str = f'{test_context[ENV_ID_KEY]}-datasync-bucket-source'
s3_bucket_destination: str = f'{test_context[ENV_ID_KEY]}-datasync-bucket-destination'
create_s3_bucket_source = S3CreateBucketOperator(
task_id='create_s3_bucket_source', bucket_name=s3_bucket_source
)
create_s3_bucket_destination = S3CreateBucketOperator(
task_id='create_s3_bucket_destination', bucket_name=s3_bucket_destination
)
source_location = create_source_location(s3_bucket_source, test_context[ROLE_ARN_KEY])
destination_location = create_destination_location(s3_bucket_destination, test_context[ROLE_ARN_KEY])
created_task_arn = create_task()
# [START howto_operator_datasync_specific_task]
# Execute a specific task
execute_task_by_arn = DataSyncOperator(
task_id='execute_task_by_arn',
task_arn=created_task_arn,
wait_for_completion=False,
)
# [END howto_operator_datasync_specific_task]
# [START howto_operator_datasync_search_task]
# Search and execute a task
execute_task_by_locations = DataSyncOperator(
task_id='execute_task_by_locations',
source_location_uri=f's3://{s3_bucket_source}/test',
destination_location_uri=f's3://{s3_bucket_destination}/test',
# Only transfer files from /test/subdir folder
task_execution_kwargs={
'Includes': [{'FilterType': 'SIMPLE_PATTERN', 'Value': '/test/subdir'}],
},
wait_for_completion=False,
)
# [END howto_operator_datasync_search_task]
# [START howto_operator_datasync_create_task]
# Create a task (the task does not exist)
create_and_execute_task = DataSyncOperator(
task_id='create_and_execute_task',
source_location_uri=f's3://{s3_bucket_source}/test_create',
destination_location_uri=f's3://{s3_bucket_destination}/test_create',
create_task_kwargs={"Name": "Created by Airflow"},
create_source_location_kwargs={
'Subdirectory': 'test_create',
'S3BucketArn': get_s3_bucket_arn(s3_bucket_source),
'S3Config': {
'BucketAccessRoleArn': test_context[ROLE_ARN_KEY],
},
},
create_destination_location_kwargs={
'Subdirectory': 'test_create',
'S3BucketArn': get_s3_bucket_arn(s3_bucket_destination),
'S3Config': {
'BucketAccessRoleArn': test_context[ROLE_ARN_KEY],
},
},
delete_task_after_execution=False,
wait_for_completion=False,
)
# [END howto_operator_datasync_create_task]
locations_task = list_locations(s3_bucket_source, s3_bucket_destination)
delete_locations_task = delete_locations(locations_task)
delete_s3_bucket_source = S3DeleteBucketOperator(
task_id='delete_s3_bucket_source',
bucket_name=s3_bucket_source,
force_delete=True,
trigger_rule=TriggerRule.ALL_DONE,
)
delete_s3_bucket_destination = S3DeleteBucketOperator(
task_id='delete_s3_bucket_destination',
bucket_name=s3_bucket_destination,
force_delete=True,
trigger_rule=TriggerRule.ALL_DONE,
)
chain(
# TEST SETUP
test_context,
create_s3_bucket_source,
create_s3_bucket_destination,
source_location,
destination_location,
created_task_arn,
# TEST BODY
execute_task_by_arn,
execute_task_by_locations,
create_and_execute_task,
# TEST TEARDOWN
delete_task(created_task_arn),
delete_task_created_by_operator(),
locations_task,
delete_locations_task,
delete_s3_bucket_source,
delete_s3_bucket_destination,
)
from tests.system.utils.watcher import watcher
# This test needs watcher in order to properly mark success/failure
# when "tearDown" task with trigger rule is part of the DAG
list(dag.tasks) >> watcher()
from tests.system.utils import get_test_run # noqa: E402
# Needed to run the example DAG with pytest (see: tests/system/README.md#run_via_pytest)
[docs]test_run = get_test_run(dag)
