airflow bigquery 源码

  • 2022-10-20
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airflow bigquery 代码

文件路径:/airflow/providers/google/cloud/links/bigquery.py

#
# 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.
"""This module contains Google BigQuery links."""
from __future__ import annotations

from typing import TYPE_CHECKING

from airflow.models import BaseOperator
from airflow.providers.google.cloud.links.base import BaseGoogleLink

if TYPE_CHECKING:
    from airflow.utils.context import Context

BIGQUERY_BASE_LINK = "/bigquery"
BIGQUERY_DATASET_LINK = (
    BIGQUERY_BASE_LINK + "?referrer=search&project={project_id}&d={dataset_id}&p={project_id}&page=dataset"
)
BIGQUERY_TABLE_LINK = (
    BIGQUERY_BASE_LINK
    + "?referrer=search&project={project_id}&d={dataset_id}&p={project_id}&page=table&t={table_id}"
)


class BigQueryDatasetLink(BaseGoogleLink):
    """Helper class for constructing BigQuery Dataset Link"""

    name = "BigQuery Dataset"
    key = "bigquery_dataset"
    format_str = BIGQUERY_DATASET_LINK

    @staticmethod
    def persist(
        context: Context,
        task_instance: BaseOperator,
        dataset_id: str,
        project_id: str,
    ):
        task_instance.xcom_push(
            context,
            key=BigQueryDatasetLink.key,
            value={"dataset_id": dataset_id, "project_id": project_id},
        )


class BigQueryTableLink(BaseGoogleLink):
    """Helper class for constructing BigQuery Table Link"""

    name = "BigQuery Table"
    key = "bigquery_table"
    format_str = BIGQUERY_TABLE_LINK

    @staticmethod
    def persist(
        context: Context,
        task_instance: BaseOperator,
        project_id: str,
        table_id: str,
        dataset_id: str | None = None,
    ):
        task_instance.xcom_push(
            context,
            key=BigQueryTableLink.key,
            value={"dataset_id": dataset_id, "project_id": project_id, "table_id": table_id},
        )

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