implement scheduling for daily materialised view update + make default dag timezone global

Author: duprijil

dags/daily_materialized_views_update.py

@@ -1,8 +1,9 @@
 from airflow.decorators import dag, task
+from airflow.timetables.trigger import CronTriggerTimetable
 from pymongo import MongoClient
 
 from dags import DEFAULT_DAG_ARGUMENTS
-from ted_sws import config
+from ted_sws import config, DAG_DEFAULT_TIMEZONE
 from ted_sws.data_manager.services.create_batch_collection_materialised_view import \
     create_batch_collection_materialised_view
 from ted_sws.data_manager.services.create_notice_collection_materialised_view import \
@@ -12,8 +13,11 @@
 
 
 @dag(default_args=DEFAULT_DAG_ARGUMENTS,
+     dag_id=DAILY_MATERIALISED_VIEWS_DAG_NAME,
      catchup=False,
-     schedule_interval="0 6 * * *",
+     timetable=CronTriggerTimetable(
+         cron=config.SCHEDULE_DAG_MATERIALIZED_VIEW_UPDATE,
+         timezone=DAG_DEFAULT_TIMEZONE),
      tags=['mongodb', 'daily-views-update'])
 def daily_materialized_views_update():
     @task

dags/fetch_notices_by_date.py

@@ -10,7 +10,7 @@
 from dags.dags_utils import get_dag_param, push_dag_downstream, pull_dag_upstream
 from dags.operators.DagBatchPipelineOperator import NOTICE_IDS_KEY, TriggerNoticeBatchPipelineOperator
 from dags.pipelines.notice_fetcher_pipelines import notice_fetcher_by_date_pipeline
-from ted_sws import config
+from ted_sws import config, DAG_DEFAULT_TIMEZONE
 from ted_sws.event_manager.adapters.event_log_decorator import event_log
 from ted_sws.event_manager.model.event_message import TechnicalEventMessage, EventMessageMetadata, \
     EventMessageProcessType
@@ -26,15 +26,13 @@
 FINISH_FETCH_BY_DATE_TASK_ID = "finish_fetch_by_date"
 VALIDATE_FETCHED_NOTICES_TASK_ID = "validate_fetched_notices"
 
-DAG_FETCH_DEFAULT_TIMEZONE = "UTC"
-
 
 @dag(default_args=DEFAULT_DAG_ARGUMENTS,
      dag_id=FETCHER_DAG_NAME,
      catchup=False,
      timetable=CronTriggerTimetable(
          cron=config.SCHEDULE_DAG_FETCH,
-         timezone=DAG_FETCH_DEFAULT_TIMEZONE),
+         timezone=DAG_DEFAULT_TIMEZONE),
      tags=['selector', 'daily-fetch'])
 def fetch_notices_by_date():
     @task

ted_sws/__init__.py

@@ -37,6 +37,7 @@
 
 DAG_FETCH_DEFAULT_TIMETABLE = "0 1 * * *"
 DAG_MATERIALIZED_VIEW_UPDATE_DEFAULT_TIMETABLE = "0 6 * * *"
+DAG_DEFAULT_TIMEZONE = "UTC"
 
 class MongoDBConfig: