mirror of
https://github.com/ClickHouse/ClickHouse.git
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257 lines
8.5 KiB
Python
257 lines
8.5 KiB
Python
import pytest
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import re
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import os.path
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from helpers.cluster import ClickHouseCluster
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cluster = ClickHouseCluster(__file__)
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instance = cluster.add_instance(
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"instance", main_configs=["configs/backups_disk.xml"], external_dirs=["/backups/"]
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)
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def create_and_fill_table(engine="MergeTree"):
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if engine == "MergeTree":
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engine = "MergeTree ORDER BY y PARTITION BY x%10"
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instance.query("CREATE DATABASE test")
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instance.query(f"CREATE TABLE test.table(x UInt32, y String) ENGINE={engine}")
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instance.query(
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"INSERT INTO test.table SELECT number, toString(number) FROM numbers(100)"
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)
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@pytest.fixture(scope="module", autouse=True)
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def start_cluster():
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try:
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cluster.start()
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yield cluster
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finally:
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cluster.shutdown()
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@pytest.fixture(autouse=True)
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def cleanup_after_test():
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try:
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yield
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finally:
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instance.query("DROP DATABASE IF EXISTS test")
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backup_id_counter = 0
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def new_backup_name():
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global backup_id_counter
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backup_id_counter += 1
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return f"Disk('backups', '{backup_id_counter}/')"
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def get_backup_dir(backup_name):
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counter = int(backup_name.split(",")[1].strip("')/ "))
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return os.path.join(instance.path, f"backups/{counter}")
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@pytest.mark.parametrize(
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"engine", ["MergeTree", "Log", "TinyLog", "StripeLog", "Memory"]
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)
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def test_restore_table(engine):
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backup_name = new_backup_name()
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create_and_fill_table(engine=engine)
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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instance.query(f"BACKUP TABLE test.table TO {backup_name}")
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instance.query("DROP TABLE test.table")
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assert instance.query("EXISTS test.table") == "0\n"
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instance.query(f"RESTORE TABLE test.table FROM {backup_name}")
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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@pytest.mark.parametrize(
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"engine", ["MergeTree", "Log", "TinyLog", "StripeLog", "Memory"]
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)
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def test_restore_table_into_existing_table(engine):
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backup_name = new_backup_name()
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create_and_fill_table(engine=engine)
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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instance.query(f"BACKUP TABLE test.table TO {backup_name}")
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instance.query(
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f"RESTORE TABLE test.table INTO test.table FROM {backup_name}"
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)
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "200\t9900\n"
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instance.query(
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f"RESTORE TABLE test.table INTO test.table FROM {backup_name}"
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)
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "300\t14850\n"
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def test_restore_table_under_another_name():
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backup_name = new_backup_name()
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create_and_fill_table()
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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instance.query(f"BACKUP TABLE test.table TO {backup_name}")
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assert instance.query("EXISTS test.table2") == "0\n"
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instance.query(f"RESTORE TABLE test.table INTO test.table2 FROM {backup_name}")
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assert instance.query("SELECT count(), sum(x) FROM test.table2") == "100\t4950\n"
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def test_backup_table_under_another_name():
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backup_name = new_backup_name()
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create_and_fill_table()
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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instance.query(f"BACKUP TABLE test.table AS test.table2 TO {backup_name}")
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assert instance.query("EXISTS test.table2") == "0\n"
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instance.query(f"RESTORE TABLE test.table2 FROM {backup_name}")
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assert instance.query("SELECT count(), sum(x) FROM test.table2") == "100\t4950\n"
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def test_materialized_view():
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backup_name = new_backup_name()
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instance.query(
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"CREATE MATERIALIZED VIEW mv_1(x UInt8) ENGINE=MergeTree ORDER BY tuple() POPULATE AS SELECT 1 AS x"
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)
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instance.query(f"BACKUP TABLE mv_1 TO {backup_name}")
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instance.query("DROP TABLE mv_1")
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instance.query(f"RESTORE TABLE mv_1 FROM {backup_name}")
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assert instance.query("SELECT * FROM mv_1") == "1\n"
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instance.query("DROP TABLE mv_1")
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def test_incremental_backup():
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backup_name = new_backup_name()
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incremental_backup_name = new_backup_name()
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create_and_fill_table()
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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instance.query(f"BACKUP TABLE test.table TO {backup_name}")
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instance.query("INSERT INTO test.table VALUES (65, 'a'), (66, 'b')")
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "102\t5081\n"
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instance.query(
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f"BACKUP TABLE test.table TO {incremental_backup_name} SETTINGS base_backup = {backup_name}"
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)
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instance.query(
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f"RESTORE TABLE test.table AS test.table2 FROM {incremental_backup_name}"
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)
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assert instance.query("SELECT count(), sum(x) FROM test.table2") == "102\t5081\n"
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def test_incremental_backup_after_renaming_table():
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backup_name = new_backup_name()
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incremental_backup_name = new_backup_name()
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create_and_fill_table()
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instance.query(f"BACKUP TABLE test.table TO {backup_name}")
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instance.query("RENAME TABLE test.table TO test.table2")
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instance.query(
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f"BACKUP TABLE test.table2 TO {incremental_backup_name} SETTINGS base_backup = {backup_name}"
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)
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# Files in a base backup can be searched by checksum, so an incremental backup with a renamed table actually
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# contains only its changed metadata.
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contents = os.listdir(get_backup_dir(incremental_backup_name))
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assert '.backup' in contents
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contents.remove('.backup')
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assert len(contents) == 1
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with open(os.path.join(get_backup_dir(incremental_backup_name), contents[0])) as table_def_in_backup:
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assert table_def_in_backup.read().startswith('CREATE TABLE test.table2')
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instance.query("DROP TABLE test.table2")
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instance.query(f"RESTORE TABLE test.table2 FROM {incremental_backup_name}")
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assert instance.query("SELECT count(), sum(x) FROM test.table2") == "100\t4950\n"
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def test_backup_not_found_or_already_exists():
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backup_name = new_backup_name()
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expected_error = "Backup .* not found"
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assert re.search(
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expected_error,
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instance.query_and_get_error(
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f"RESTORE TABLE test.table AS test.table2 FROM {backup_name}"
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),
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)
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create_and_fill_table()
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instance.query(f"BACKUP TABLE test.table TO {backup_name}")
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expected_error = "Backup .* already exists"
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assert re.search(
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expected_error,
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instance.query_and_get_error(f"BACKUP TABLE test.table TO {backup_name}"),
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)
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def test_file_engine():
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backup_name = f"File('/backups/file/')"
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create_and_fill_table()
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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instance.query(f"BACKUP TABLE test.table TO {backup_name}")
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instance.query("DROP TABLE test.table")
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assert instance.query("EXISTS test.table") == "0\n"
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instance.query(f"RESTORE TABLE test.table FROM {backup_name}")
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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def test_database():
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backup_name = new_backup_name()
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create_and_fill_table()
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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instance.query(f"BACKUP DATABASE test TO {backup_name}")
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instance.query("DROP DATABASE test")
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instance.query(f"RESTORE DATABASE test FROM {backup_name}")
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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def test_zip_archive():
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backup_name = f"File('/backups/archive.zip')"
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create_and_fill_table()
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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instance.query(f"BACKUP TABLE test.table TO {backup_name}")
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assert os.path.isfile(
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os.path.join(os.path.join(instance.path, "backups/archive.zip"))
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)
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instance.query("DROP TABLE test.table")
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assert instance.query("EXISTS test.table") == "0\n"
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instance.query(f"RESTORE TABLE test.table FROM {backup_name}")
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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def test_zip_archive_with_settings():
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backup_name = f"File('/backups/archive_with_settings.zip')"
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create_and_fill_table()
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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instance.query(
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f"BACKUP TABLE test.table TO {backup_name} SETTINGS compression_method='lzma', compression_level=3, password='qwerty'"
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)
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instance.query("DROP TABLE test.table")
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assert instance.query("EXISTS test.table") == "0\n"
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instance.query(
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f"RESTORE TABLE test.table FROM {backup_name} SETTINGS password='qwerty'"
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)
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assert instance.query("SELECT count(), sum(x) FROM test.table") == "100\t4950\n"
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