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51 lines
2.1 KiB
Python
51 lines
2.1 KiB
Python
from celery.utils.log import get_task_logger
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from ee.clickhouse.client import sync_execute
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from ee.clickhouse.materialized_columns.columns import TRIM_AND_EXTRACT_PROPERTY, ColumnName, get_materialized_columns
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from posthog.settings import CLICKHOUSE_CLUSTER, CLICKHOUSE_DATABASE, CLICKHOUSE_REPLICATION
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logger = get_task_logger(__name__)
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def mark_all_materialized() -> None:
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if any_ongoing_mutations():
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logger.info("There are running mutations, skipping marking as materialized")
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return
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for table, property_name, column_name in get_materialized_columns_with_default_expression():
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updated_table = "sharded_events" if CLICKHOUSE_REPLICATION and table == "events" else table
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# :TRICKY: On cloud, we ON CLUSTER updates to events/sharded_events but not to persons. Why? ¯\_(ツ)_/¯
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execute_on_cluster = f"ON CLUSTER {CLICKHOUSE_CLUSTER}" if table == "events" else ""
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sync_execute(
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f"""
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ALTER TABLE {updated_table}
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{execute_on_cluster}
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MODIFY COLUMN
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{column_name} VARCHAR MATERIALIZED {TRIM_AND_EXTRACT_PROPERTY}
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""",
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{"property": property_name},
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)
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def get_materialized_columns_with_default_expression():
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for table in ["events", "person"]:
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materialized_columns = get_materialized_columns(table, use_cache=False)
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for property_name, column_name in materialized_columns.items():
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if is_default_expression(table, column_name):
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yield table, property_name, column_name
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def any_ongoing_mutations() -> bool:
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running_mutations_count = sync_execute("SELECT count(*) FROM system.mutations WHERE is_done = 0")[0][0]
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return running_mutations_count > 0
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def is_default_expression(table: str, column_name: ColumnName) -> bool:
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column_query = sync_execute(
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"SELECT default_kind FROM system.columns WHERE table = %(table)s AND name = %(name)s AND database = %(database)s",
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{"table": table, "name": column_name, "database": CLICKHOUSE_DATABASE,},
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)
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return len(column_query) > 0 and column_query[0][0] == "DEFAULT"
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