ddadmin
92f3828a45
- Зачем: - формализация проверки всей цепочки ETL (STG -> ODS -> DDS -> DM). - Что: - создан docs/e2e-etl-test-protocol.md и sql/truncate_gp.sql. - в Makefile добавлена команда dwh-truncate. - start_date во всех DAG изменен на 2017-01-01. - Проверка: - выполнение make dwh-truncate и прогон DAG.
99 lines
3.2 KiB
Python
99 lines
3.2 KiB
Python
from __future__ import annotations
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"""
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Учебный DAG: создаёт/обновляет слой ods в Greenplum для домена bookings.
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Запускается вручную перед DAG загрузки `bookings_to_gp_ods` или после изменения ODS DDL.
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Создаёт 9 ODS-таблиц: airports, airplanes, routes, seats, bookings, tickets,
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flights, segments, boarding_passes.
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"""
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from datetime import timedelta
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import pendulum
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from airflow.providers.postgres.operators.postgres import PostgresOperator
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from airflow import DAG
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GREENPLUM_CONN_ID = "greenplum_conn"
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default_args = {"owner": "airflow", "retries": 1, "retry_delay": timedelta(seconds=30)}
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with DAG(
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dag_id="bookings_ods_ddl",
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start_date=pendulum.datetime(2017, 1, 1, tz="UTC"),
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schedule=None,
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catchup=False,
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template_searchpath="/sql",
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default_args=default_args,
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tags=["demo", "greenplum", "ddl", "bookings", "ods"],
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description="Учебный DDL DAG: создаёт/обновляет ods.* для bookings",
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) as dag:
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apply_ods_airports_ddl = PostgresOperator(
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task_id="apply_ods_airports_ddl",
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postgres_conn_id=GREENPLUM_CONN_ID,
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sql="ods/airports_ddl.sql",
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)
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apply_ods_airplanes_ddl = PostgresOperator(
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task_id="apply_ods_airplanes_ddl",
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postgres_conn_id=GREENPLUM_CONN_ID,
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sql="ods/airplanes_ddl.sql",
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)
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apply_ods_routes_ddl = PostgresOperator(
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task_id="apply_ods_routes_ddl",
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postgres_conn_id=GREENPLUM_CONN_ID,
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sql="ods/routes_ddl.sql",
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)
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apply_ods_seats_ddl = PostgresOperator(
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task_id="apply_ods_seats_ddl",
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postgres_conn_id=GREENPLUM_CONN_ID,
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sql="ods/seats_ddl.sql",
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)
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apply_ods_bookings_ddl = PostgresOperator(
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task_id="apply_ods_bookings_ddl",
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postgres_conn_id=GREENPLUM_CONN_ID,
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sql="ods/bookings_ddl.sql",
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)
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apply_ods_tickets_ddl = PostgresOperator(
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task_id="apply_ods_tickets_ddl",
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postgres_conn_id=GREENPLUM_CONN_ID,
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sql="ods/tickets_ddl.sql",
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)
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apply_ods_flights_ddl = PostgresOperator(
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task_id="apply_ods_flights_ddl",
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postgres_conn_id=GREENPLUM_CONN_ID,
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sql="ods/flights_ddl.sql",
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)
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apply_ods_segments_ddl = PostgresOperator(
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task_id="apply_ods_segments_ddl",
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postgres_conn_id=GREENPLUM_CONN_ID,
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sql="ods/segments_ddl.sql",
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)
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apply_ods_boarding_passes_ddl = PostgresOperator(
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task_id="apply_ods_boarding_passes_ddl",
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postgres_conn_id=GREENPLUM_CONN_ID,
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sql="ods/boarding_passes_ddl.sql",
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)
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# DDL применяем последовательно, чтобы порядок был понятным для новичков,
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# а ошибки — воспроизводимыми (в логах сразу видно, на каком объекте упали).
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(
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apply_ods_airports_ddl
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>> apply_ods_airplanes_ddl
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>> apply_ods_routes_ddl
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>> apply_ods_seats_ddl
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>> apply_ods_bookings_ddl
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>> apply_ods_tickets_ddl
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>> apply_ods_flights_ddl
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>> apply_ods_segments_ddl
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>> apply_ods_boarding_passes_ddl
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)
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