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"""This module contains Google BigQuery Data Transfer Service operators."""
from __future__ import annotations
import time
from functools import cached_property
from typing import TYPE_CHECKING, Sequence
from google.api_core.gapic_v1.method import DEFAULT, _MethodDefault
from google.api_core.retry import Retry
from google.cloud.bigquery_datatransfer_v1 import (
StartManualTransferRunsResponse,
TransferConfig,
TransferRun,
TransferState,
)
from airflow import AirflowException
from airflow.configuration import conf
from airflow.providers.google.cloud.hooks.bigquery_dts import BiqQueryDataTransferServiceHook, get_object_id
from airflow.providers.google.cloud.links.bigquery_dts import BigQueryDataTransferConfigLink
from airflow.providers.google.cloud.operators.cloud_base import GoogleCloudBaseOperator
from airflow.providers.google.cloud.triggers.bigquery_dts import BigQueryDataTransferRunTrigger
if TYPE_CHECKING:
from airflow.utils.context import Context
def _get_transfer_config_details(config_transfer_name: str):
config_details = config_transfer_name.split("/")
return {"project_id": config_details[1], "region": config_details[3], "config_id": config_details[5]}
[docs]class BigQueryCreateDataTransferOperator(GoogleCloudBaseOperator):
"""
Creates a new data transfer configuration.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:BigQueryCreateDataTransferOperator`
:param transfer_config: Data transfer configuration to create.
:param project_id: The BigQuery project id where the transfer configuration should be
created. If set to None or missing, the default project_id from the Google Cloud connection
is used.
:param location: BigQuery Transfer Service location for regional transfers.
:param authorization_code: authorization code to use with this transfer configuration.
This is required if new credentials are needed.
:param retry: A retry object used to retry requests. If `None` is
specified, requests will not be retried.
:param timeout: The amount of time, in seconds, to wait for the request to
complete. Note that if retry is specified, the timeout applies to each individual
attempt.
:param metadata: Additional metadata that is provided to the method.
:param gcp_conn_id: The connection ID used to connect to Google Cloud.
:param impersonation_chain: Optional service account to impersonate using short-term
credentials, or chained list of accounts required to get the access_token
of the last account in the list, which will be impersonated in the request.
If set as a string, the account must grant the originating account
the Service Account Token Creator IAM role.
If set as a sequence, the identities from the list must grant
Service Account Token Creator IAM role to the directly preceding identity, with first
account from the list granting this role to the originating account (templated).
"""
[docs] template_fields: Sequence[str] = (
"transfer_config",
"project_id",
"authorization_code",
"gcp_conn_id",
"impersonation_chain",
)
def __init__(
self,
*,
transfer_config: dict,
project_id: str | None = None,
location: str | None = None,
authorization_code: str | None = None,
retry: Retry | _MethodDefault = DEFAULT,
timeout: float | None = None,
metadata: Sequence[tuple[str, str]] = (),
gcp_conn_id="google_cloud_default",
impersonation_chain: str | Sequence[str] | None = None,
**kwargs,
) -> None:
super().__init__(**kwargs)
self.transfer_config = transfer_config
self.authorization_code = authorization_code
self.project_id = project_id
self.location = location
self.retry = retry
self.timeout = timeout
self.metadata = metadata
self.gcp_conn_id = gcp_conn_id
self.impersonation_chain = impersonation_chain
[docs] def execute(self, context: Context):
hook = BiqQueryDataTransferServiceHook(
gcp_conn_id=self.gcp_conn_id, impersonation_chain=self.impersonation_chain, location=self.location
)
self.log.info("Creating DTS transfer config")
response = hook.create_transfer_config(
project_id=self.project_id,
transfer_config=self.transfer_config,
authorization_code=self.authorization_code,
retry=self.retry,
timeout=self.timeout,
metadata=self.metadata,
)
transfer_config = _get_transfer_config_details(response.name)
BigQueryDataTransferConfigLink.persist(
context=context,
task_instance=self,
region=transfer_config["region"],
config_id=transfer_config["config_id"],
project_id=transfer_config["project_id"],
)
result = TransferConfig.to_dict(response)
self.log.info("Created DTS transfer config %s", get_object_id(result))
self.xcom_push(context, key="transfer_config_id", value=get_object_id(result))
# don't push AWS secret in XCOM
result.get("params", {}).pop("secret_access_key", None)
result.get("params", {}).pop("access_key_id", None)
return result
[docs]class BigQueryDeleteDataTransferConfigOperator(GoogleCloudBaseOperator):
"""
Deletes transfer configuration.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:BigQueryDeleteDataTransferConfigOperator`
:param transfer_config_id: Id of transfer config to be used.
:param project_id: The BigQuery project id where the transfer configuration should be
created. If set to None or missing, the default project_id from the Google Cloud connection is used.
:param location: BigQuery Transfer Service location for regional transfers.
:param retry: A retry object used to retry requests. If `None` is
specified, requests will not be retried.
:param timeout: The amount of time, in seconds, to wait for the request to
complete. Note that if retry is specified, the timeout applies to each individual
attempt.
:param metadata: Additional metadata that is provided to the method.
:param gcp_conn_id: The connection ID used to connect to Google Cloud.
:param impersonation_chain: Optional service account to impersonate using short-term
credentials, or chained list of accounts required to get the access_token
of the last account in the list, which will be impersonated in the request.
If set as a string, the account must grant the originating account
the Service Account Token Creator IAM role.
If set as a sequence, the identities from the list must grant
Service Account Token Creator IAM role to the directly preceding identity, with first
account from the list granting this role to the originating account (templated).
"""
[docs] template_fields: Sequence[str] = (
"transfer_config_id",
"project_id",
"gcp_conn_id",
"impersonation_chain",
)
def __init__(
self,
*,
transfer_config_id: str,
project_id: str | None = None,
location: str | None = None,
retry: Retry | _MethodDefault = DEFAULT,
timeout: float | None = None,
metadata: Sequence[tuple[str, str]] = (),
gcp_conn_id="google_cloud_default",
impersonation_chain: str | Sequence[str] | None = None,
**kwargs,
) -> None:
super().__init__(**kwargs)
self.project_id = project_id
self.location = location
self.transfer_config_id = transfer_config_id
self.retry = retry
self.timeout = timeout
self.metadata = metadata
self.gcp_conn_id = gcp_conn_id
self.impersonation_chain = impersonation_chain
[docs] def execute(self, context: Context) -> None:
hook = BiqQueryDataTransferServiceHook(
gcp_conn_id=self.gcp_conn_id, impersonation_chain=self.impersonation_chain, location=self.location
)
hook.delete_transfer_config(
transfer_config_id=self.transfer_config_id,
project_id=self.project_id,
retry=self.retry,
timeout=self.timeout,
metadata=self.metadata,
)
[docs]class BigQueryDataTransferServiceStartTransferRunsOperator(GoogleCloudBaseOperator):
"""
Start manual transfer runs to be executed now with schedule_time equal to current time.
The transfer runs can be created for a time range where the run_time is between
start_time (inclusive) and end_time (exclusive), or for a specific run_time.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:BigQueryDataTransferServiceStartTransferRunsOperator`
:param transfer_config_id: Id of transfer config to be used.
:param requested_time_range: Time range for the transfer runs that should be started.
If a dict is provided, it must be of the same form as the protobuf
message `~google.cloud.bigquery_datatransfer_v1.types.TimeRange`
:param requested_run_time: Specific run_time for a transfer run to be started. The
requested_run_time must not be in the future. If a dict is provided, it
must be of the same form as the protobuf message
`~google.cloud.bigquery_datatransfer_v1.types.Timestamp`
:param project_id: The BigQuery project id where the transfer configuration should be
created.
:param location: BigQuery Transfer Service location for regional transfers.
:param retry: A retry object used to retry requests. If `None` is
specified, requests will not be retried.
:param timeout: The amount of time, in seconds, to wait for the request to
complete. Note that if retry is specified, the timeout applies to each individual
attempt.
:param metadata: Additional metadata that is provided to the method.
:param gcp_conn_id: The connection ID used to connect to Google Cloud.
:param impersonation_chain: Optional service account to impersonate using short-term
credentials, or chained list of accounts required to get the access_token
of the last account in the list, which will be impersonated in the request.
If set as a string, the account must grant the originating account
the Service Account Token Creator IAM role.
If set as a sequence, the identities from the list must grant
Service Account Token Creator IAM role to the directly preceding identity, with first
account from the list granting this role to the originating account (templated).
:param deferrable: Run operator in the deferrable mode.
"""
[docs] template_fields: Sequence[str] = (
"transfer_config_id",
"project_id",
"requested_time_range",
"requested_run_time",
"gcp_conn_id",
"impersonation_chain",
)
def __init__(
self,
*,
transfer_config_id: str,
project_id: str | None = None,
location: str | None = None,
requested_time_range: dict | None = None,
requested_run_time: dict | None = None,
retry: Retry | _MethodDefault = DEFAULT,
timeout: float | None = None,
metadata: Sequence[tuple[str, str]] = (),
gcp_conn_id="google_cloud_default",
impersonation_chain: str | Sequence[str] | None = None,
deferrable: bool = conf.getboolean("operators", "default_deferrable", fallback=False),
**kwargs,
) -> None:
super().__init__(**kwargs)
self.project_id = project_id
self.location = location
self.transfer_config_id = transfer_config_id
self.requested_time_range = requested_time_range
self.requested_run_time = requested_run_time
self.retry = retry
self.timeout = timeout
self.metadata = metadata
self.gcp_conn_id = gcp_conn_id
self.impersonation_chain = impersonation_chain
self.deferrable = deferrable
@cached_property
[docs] def hook(self) -> BiqQueryDataTransferServiceHook:
hook = BiqQueryDataTransferServiceHook(
gcp_conn_id=self.gcp_conn_id,
impersonation_chain=self.impersonation_chain,
location=self.location,
)
return hook
[docs] def execute(self, context: Context):
self.log.info("Submitting manual transfer for %s", self.transfer_config_id)
if self.requested_run_time and isinstance(self.requested_run_time.get("seconds"), str):
self.requested_run_time["seconds"] = int(self.requested_run_time["seconds"])
response = self.hook.start_manual_transfer_runs(
transfer_config_id=self.transfer_config_id,
requested_time_range=self.requested_time_range,
requested_run_time=self.requested_run_time,
project_id=self.project_id,
retry=self.retry,
timeout=self.timeout,
metadata=self.metadata,
)
transfer_config = _get_transfer_config_details(response.runs[0].name)
BigQueryDataTransferConfigLink.persist(
context=context,
task_instance=self,
region=transfer_config["region"],
config_id=transfer_config["config_id"],
project_id=transfer_config["project_id"],
)
result = StartManualTransferRunsResponse.to_dict(response)
run_id = get_object_id(result["runs"][0])
self.xcom_push(context, key="run_id", value=run_id)
if not self.deferrable:
result = self._wait_for_transfer_to_be_done(
run_id=run_id,
transfer_config_id=transfer_config["config_id"],
)
self.log.info("Transfer run %s submitted successfully.", run_id)
return result
self.defer(
trigger=BigQueryDataTransferRunTrigger(
project_id=self.project_id,
config_id=transfer_config["config_id"],
run_id=run_id,
gcp_conn_id=self.gcp_conn_id,
location=self.location,
impersonation_chain=self.impersonation_chain,
),
method_name="execute_completed",
)
def _wait_for_transfer_to_be_done(self, run_id: str, transfer_config_id: str, interval: int = 10):
if interval < 0:
raise ValueError("Interval must be > 0")
while True:
transfer_run: TransferRun = self.hook.get_transfer_run(
run_id=run_id,
transfer_config_id=transfer_config_id,
project_id=self.project_id,
retry=self.retry,
timeout=self.timeout,
metadata=self.metadata,
)
state = transfer_run.state
if self._job_is_done(state):
if state == TransferState.FAILED or state == TransferState.CANCELLED:
raise AirflowException(f"Transfer run was finished with {state} status.")
result = TransferRun.to_dict(transfer_run)
return result
self.log.info("Transfer run is still working, waiting for %s seconds...", interval)
self.log.info("Transfer run status: %s", state)
time.sleep(interval)
@staticmethod
def _job_is_done(state: TransferState) -> bool:
finished_job_statuses = [
state.SUCCEEDED,
state.CANCELLED,
state.FAILED,
]
return state in finished_job_statuses
[docs] def execute_completed(self, context: Context, event: dict):
"""Method to be executed after invoked trigger in defer method finishes its job."""
if event["status"] == "failed" or event["status"] == "cancelled":
self.log.error("Trigger finished its work with status: %s.", event["status"])
raise AirflowException(event["message"])
transfer_run: TransferRun = self.hook.get_transfer_run(
project_id=self.project_id,
run_id=event["run_id"],
transfer_config_id=event["config_id"],
)
self.log.info(
"%s finished with message: %s",
event["run_id"],
event["message"],
)
return TransferRun.to_dict(transfer_run)
