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# 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
#
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from __future__ import annotations
import argparse
from functools import cached_property
from typing import TYPE_CHECKING
from flask import session, url_for
from airflow.cli.cli_config import CLICommand, DefaultHelpParser, GroupCommand
from airflow.configuration import conf
from airflow.exceptions import AirflowOptionalProviderFeatureException
from airflow.providers.amazon.aws.auth_manager.avp.entities import AvpEntities
from airflow.providers.amazon.aws.auth_manager.avp.facade import AwsAuthManagerAmazonVerifiedPermissionsFacade
from airflow.providers.amazon.aws.auth_manager.cli.definition import (
AWS_AUTH_MANAGER_COMMANDS,
)
from airflow.providers.amazon.aws.auth_manager.constants import (
CONF_ENABLE_KEY,
CONF_SECTION_NAME,
)
from airflow.providers.amazon.aws.auth_manager.security_manager.aws_security_manager_override import (
AwsSecurityManagerOverride,
)
try:
from airflow.auth.managers.base_auth_manager import BaseAuthManager, ResourceMethod
except ImportError:
raise AirflowOptionalProviderFeatureException(
"Failed to import BaseUser. This feature is only available in Airflow versions >= 2.8.0"
)
if TYPE_CHECKING:
from airflow.auth.managers.models.base_user import BaseUser
from airflow.auth.managers.models.resource_details import (
AccessView,
ConfigurationDetails,
ConnectionDetails,
DagAccessEntity,
DagDetails,
DatasetDetails,
PoolDetails,
VariableDetails,
)
from airflow.providers.amazon.aws.auth_manager.user import AwsAuthManagerUser
from airflow.www.extensions.init_appbuilder import AirflowAppBuilder
[docs]class AwsAuthManager(BaseAuthManager):
"""
AWS auth manager.
Leverages AWS services such as Amazon Identity Center and Amazon Verified Permissions to perform
authentication and authorization in Airflow.
:param appbuilder: the flask app builder
"""
def __init__(self, appbuilder: AirflowAppBuilder) -> None:
super().__init__(appbuilder)
enable = conf.getboolean(CONF_SECTION_NAME, CONF_ENABLE_KEY)
if not enable:
raise NotImplementedError(
"The AWS auth manager is currently being built. It is not finalized. It is not intended to be used yet."
)
@cached_property
[docs] def avp_facade(self):
return AwsAuthManagerAmazonVerifiedPermissionsFacade()
[docs] def get_user(self) -> AwsAuthManagerUser | None:
return session["aws_user"] if self.is_logged_in() else None
[docs] def is_logged_in(self) -> bool:
return "aws_user" in session
[docs] def is_authorized_configuration(
self,
*,
method: ResourceMethod,
details: ConfigurationDetails | None = None,
user: BaseUser | None = None,
) -> bool:
config_section = details.section if details else None
return self.avp_facade.is_authorized(
method=method,
entity_type=AvpEntities.CONFIGURATION,
user=user or self.get_user(),
entity_id=config_section,
)
[docs] def is_authorized_connection(
self,
*,
method: ResourceMethod,
details: ConnectionDetails | None = None,
user: BaseUser | None = None,
) -> bool:
connection_id = details.conn_id if details else None
return self.avp_facade.is_authorized(
method=method,
entity_type=AvpEntities.CONNECTION,
user=user or self.get_user(),
entity_id=connection_id,
)
[docs] def is_authorized_dag(
self,
*,
method: ResourceMethod,
access_entity: DagAccessEntity | None = None,
details: DagDetails | None = None,
user: BaseUser | None = None,
) -> bool:
dag_id = details.id if details else None
context = (
None
if access_entity is None
else {
"dag_entity": {
"string": access_entity.value,
},
}
)
return self.avp_facade.is_authorized(
method=method,
entity_type=AvpEntities.DAG,
user=user or self.get_user(),
entity_id=dag_id,
context=context,
)
[docs] def is_authorized_dataset(
self, *, method: ResourceMethod, details: DatasetDetails | None = None, user: BaseUser | None = None
) -> bool:
dataset_uri = details.uri if details else None
return self.avp_facade.is_authorized(
method=method,
entity_type=AvpEntities.DATASET,
user=user or self.get_user(),
entity_id=dataset_uri,
)
[docs] def is_authorized_pool(
self, *, method: ResourceMethod, details: PoolDetails | None = None, user: BaseUser | None = None
) -> bool:
pool_name = details.name if details else None
return self.avp_facade.is_authorized(
method=method,
entity_type=AvpEntities.POOL,
user=user or self.get_user(),
entity_id=pool_name,
)
[docs] def is_authorized_variable(
self, *, method: ResourceMethod, details: VariableDetails | None = None, user: BaseUser | None = None
) -> bool:
variable_key = details.key if details else None
return self.avp_facade.is_authorized(
method=method,
entity_type=AvpEntities.VARIABLE,
user=user or self.get_user(),
entity_id=variable_key,
)
[docs] def is_authorized_view(
self,
*,
access_view: AccessView,
user: BaseUser | None = None,
) -> bool:
return self.avp_facade.is_authorized(
method="GET",
entity_type=AvpEntities.VIEW,
user=user or self.get_user(),
entity_id=access_view.value,
)
[docs] def get_url_login(self, **kwargs) -> str:
return url_for("AwsAuthManagerAuthenticationViews.login")
[docs] def get_url_logout(self) -> str:
return url_for("AwsAuthManagerAuthenticationViews.logout")
@cached_property
[docs] def security_manager(self) -> AwsSecurityManagerOverride:
return AwsSecurityManagerOverride(self.appbuilder)
@staticmethod
[docs] def get_cli_commands() -> list[CLICommand]:
"""Vends CLI commands to be included in Airflow CLI."""
return [
GroupCommand(
name="aws-auth-manager",
help="Manage resources used by AWS auth manager",
subcommands=AWS_AUTH_MANAGER_COMMANDS,
),
]
[docs]def get_parser() -> argparse.ArgumentParser:
"""Generate documentation; used by Sphinx argparse."""
from airflow.cli.cli_parser import AirflowHelpFormatter, _add_command
parser = DefaultHelpParser(prog="airflow", formatter_class=AirflowHelpFormatter)
subparsers = parser.add_subparsers(dest="subcommand", metavar="GROUP_OR_COMMAND")
for group_command in AwsAuthManager.get_cli_commands():
_add_command(subparsers, group_command)
return parser
