ddadmin
9b0b063fed
- Зачем: - коммит-гейт не запускал корневые контрактные тесты, а часть подтверждённых обходов могла снова смешать разные миры генератора. - Что: - добавлены цели make test, make lint и contract-test с тихим pytest-выводом через Docker. - закрыты обходы через generator-reset, неизвестную версию state и fail-open проверку DM-витрин. - усилены поведенческие контракты CHECK_LIVE_SEAM, профиля manifest и pause-check etl_pipeline; обновлены документы и issue 19. - Проверка: - make test; make lint; git diff --check.
295 lines
9.8 KiB
Python
295 lines
9.8 KiB
Python
"""
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DAG-пульт генератора стартовой истории.
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Пульт выполняет только Python-код генератора внутри Airflow worker. Жизненный
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цикл контейнеров остаётся в Makefile.
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"""
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from __future__ import annotations
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from datetime import datetime, timedelta
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from airflow import DAG
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from airflow.exceptions import AirflowException
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from airflow.models.dag import DagModel
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from airflow.models.param import Param
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from airflow.operators.empty import EmptyOperator
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from airflow.operators.python import BranchPythonOperator, PythonOperator
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from airflow.operators.trigger_dagrun import TriggerDagRunOperator
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from airflow.utils.session import provide_session
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from airflow.utils.trigger_rule import TriggerRule
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from airflow_clickhouse_plugin.hooks.clickhouse import ClickHouseHook
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from clickstream_generator.airflow_control import (
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KAFKA_BOOTSTRAP_SERVERS,
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assert_clickhouse_matches_manifest,
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assert_live_generator_not_running,
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assert_stand_clean,
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build_control_env,
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default_artifact_path,
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load_manifest_from_kafka,
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run_backfill,
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run_import,
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target_dag_trigger_error,
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validate_import_artifact,
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)
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from clickstream_generator.launch import PROFILES
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default_args = {
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"owner": "airflow",
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"depends_on_past": False,
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"email_on_failure": False,
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"email_on_retry": False,
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"retries": 0,
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"retry_delay": timedelta(minutes=1),
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}
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ETL_DAG_ID = "etl_pipeline"
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def _conf(context) -> dict:
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dag_run = context.get("dag_run")
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return dag_run.conf if dag_run and dag_run.conf else {}
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def _param(context, name: str):
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return _conf(context).get(name, context["params"][name])
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def _operation(context) -> str:
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return str(_param(context, "operation"))
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def _artifact_path(context) -> str:
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value = str(_param(context, "artifact_path") or "").strip()
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if value:
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return value
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return default_artifact_path(_operation(context))
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def _overrides(context) -> dict[str, str]:
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return {
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key: str(_param(context, param_name) or "").strip()
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for param_name, key in {
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"seed": "GEN_SEED",
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"model_time_speed": "GEN_MODEL_TIME_SPEED",
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}.items()
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}
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def _build_env(context, operation: str) -> dict[str, str]:
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artifact_path = _artifact_path(context)
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if (
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operation == "backfill"
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and not str(_param(context, "artifact_path") or "").strip()
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):
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artifact_path = None
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return build_control_env(
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operation,
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profile_name=str(_param(context, "profile")),
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duration=str(_param(context, "duration") or "").strip(),
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artifact_path=artifact_path,
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overrides=_overrides(context),
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)
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def choose_operation(**context) -> str:
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"""Выбирает ветку пульта по параметру operation."""
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operation = _operation(context)
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if operation == "backfill":
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return "check_etl_not_paused_before_backfill"
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if operation == "import":
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return "check_etl_not_paused_before_import"
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if operation == "check":
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return "check_only"
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raise ValueError(f"Неизвестная операция: {operation}")
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def precheck_backfill(**context) -> None:
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"""Проверяет чистоту стенда перед backfill."""
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assert_live_generator_not_running()
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hook = ClickHouseHook(clickhouse_conn_id="clickhouse_default", database="default")
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assert_stand_clean(KAFKA_BOOTSTRAP_SERVERS, hook)
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context["ti"].xcom_push(
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key="generator_env",
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value=_build_env(context, "backfill"),
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)
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def run_backfill_task(**context) -> None:
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"""Выполняет backfill через код генератора."""
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env = context["ti"].xcom_pull(task_ids="precheck_backfill", key="generator_env")
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run_backfill(env)
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def precheck_import(**context) -> None:
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"""Проверяет чистоту стенда и совместимость артефакта перед import."""
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assert_live_generator_not_running()
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hook = ClickHouseHook(clickhouse_conn_id="clickhouse_default", database="default")
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assert_stand_clean(KAFKA_BOOTSTRAP_SERVERS, hook)
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env = _build_env(context, "import")
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artifact_path = _artifact_path(context)
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validate_import_artifact(env, artifact_path)
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context["ti"].xcom_push(key="generator_env", value=env)
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context["ti"].xcom_push(key="artifact_path", value=artifact_path)
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def run_import_task(**context) -> None:
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"""Выполняет import портативного артефакта."""
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ti = context["ti"]
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env = ti.xcom_pull(task_ids="precheck_import", key="generator_env")
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artifact_path = ti.xcom_pull(task_ids="precheck_import", key="artifact_path")
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run_import(env, artifact_path)
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def check_manifest_task(**context) -> None:
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"""Сверяет витрину ClickHouse с manifest стартовой истории."""
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manifest = load_manifest_from_kafka()
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hook = ClickHouseHook(clickhouse_conn_id="clickhouse_default", database="default")
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assert_clickhouse_matches_manifest(manifest, hook)
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@provide_session
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def assert_target_dag_not_paused(dag_id: str, session=None) -> None:
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"""
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Проверяет, что зависимый DAG можно запустить.
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Context7: для Airflow 2.10.5 у старого TriggerDagRunOperator нет надёжного
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fail_when_dag_is_paused, поэтому паузу проверяем заранее через DagModel.
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"""
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dag_model = session.query(DagModel).filter(DagModel.dag_id == dag_id).one_or_none()
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error = target_dag_trigger_error(dag_id, dag_model)
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if error:
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raise AirflowException(error)
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with DAG(
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dag_id="generator_control",
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description="Пульт стартовой истории генератора",
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default_args=default_args,
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schedule=None,
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start_date=datetime(2024, 1, 1),
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catchup=False,
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max_active_runs=1,
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is_paused_upon_creation=True,
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tags=["generator", "startup-history"],
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params={
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"operation": Param(
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"backfill",
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type="string",
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enum=["backfill", "import", "check"],
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title="Операция",
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description=(
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"Что сделать: создать историю, импортировать артефакт "
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"или проверить витрины."
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),
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),
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"profile": Param(
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sorted(PROFILES)[0],
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type="string",
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enum=sorted(PROFILES),
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title="Профиль",
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description="Именованный набор настроек генератора.",
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),
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"duration": Param(
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"",
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type="string",
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title="Длительность",
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description="Например 6h или 2d. Пусто — взять длительность из профиля.",
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),
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"seed": Param(
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"",
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type="string",
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title="GEN_SEED",
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description="Пусто — взять seed из профиля.",
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),
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"model_time_speed": Param(
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"",
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type="string",
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title="GEN_MODEL_TIME_SPEED",
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description="Пусто — взять скорость модельного времени из профиля.",
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),
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"artifact_path": Param(
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"",
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type="string",
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title="Артефакт",
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description=(
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"Backfill: куда сохранить файл; пусто — не сохранять. "
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"Import: что читать; пусто — путь по умолчанию в data."
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),
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),
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},
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) as dag:
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route = BranchPythonOperator(
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task_id="choose_operation",
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python_callable=choose_operation,
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)
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precheck_backfill_task = PythonOperator(
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task_id="precheck_backfill",
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python_callable=precheck_backfill,
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)
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backfill_task = PythonOperator(
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task_id="run_backfill",
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python_callable=run_backfill_task,
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)
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precheck_import_task = PythonOperator(
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task_id="precheck_import",
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python_callable=precheck_import,
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)
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import_task = PythonOperator(
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task_id="run_import",
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python_callable=run_import_task,
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)
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check_etl_not_paused_before_backfill = PythonOperator(
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task_id="check_etl_not_paused_before_backfill",
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python_callable=assert_target_dag_not_paused,
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op_kwargs={"dag_id": ETL_DAG_ID},
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)
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check_etl_not_paused_before_import = PythonOperator(
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task_id="check_etl_not_paused_before_import",
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python_callable=assert_target_dag_not_paused,
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op_kwargs={"dag_id": ETL_DAG_ID},
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)
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trigger_etl = TriggerDagRunOperator(
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task_id="trigger_etl",
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trigger_dag_id=ETL_DAG_ID,
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conf={"full_refresh": True},
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wait_for_completion=True,
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allowed_states=["success"],
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failed_states=["failed"],
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poke_interval=30,
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trigger_rule=TriggerRule.NONE_FAILED_MIN_ONE_SUCCESS,
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)
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check_after_etl = PythonOperator(
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task_id="check_after_etl",
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python_callable=check_manifest_task,
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)
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check_only = PythonOperator(
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task_id="check_only",
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python_callable=check_manifest_task,
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)
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done = EmptyOperator(
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task_id="done",
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trigger_rule=TriggerRule.NONE_FAILED_MIN_ONE_SUCCESS,
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)
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route >> [
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check_etl_not_paused_before_backfill,
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check_etl_not_paused_before_import,
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check_only,
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]
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check_etl_not_paused_before_backfill >> precheck_backfill_task
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check_etl_not_paused_before_import >> precheck_import_task
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precheck_backfill_task >> backfill_task >> trigger_etl
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precheck_import_task >> import_task >> trigger_etl
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trigger_etl >> check_after_etl >> done
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check_only >> done
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