def test_delete_backup(self, mock_available_backups, tmpdir, caplog):
"""
Simple test for the deletion of a backup.
We want to test the behaviour of the delete_backup method
"""
# Setup of the test backup_manager
backup_manager = build_backup_manager()
backup_manager.server.config.name = 'TestServer'
backup_manager.server.config.barman_lock_directory = tmpdir.strpath
backup_manager.server.config.backup_options = []
# Create a fake backup directory inside tmpdir (old format)
base_dir = tmpdir.mkdir('base')
backup_dir = base_dir.mkdir('fake_backup_id')
pg_data = backup_dir.mkdir('pgdata')
pg_data_v2 = backup_dir.mkdir('data')
wal_dir = tmpdir.mkdir('wals')
wal_history_file02 = wal_dir.join('00000002.history')
wal_history_file03 = wal_dir.join('00000003.history')
wal_history_file04 = wal_dir.join('00000004.history')
wal_history_file02.write('1\t0/2000028\tat restore point "myrp"\n')
wal_history_file03.write('1\t0/2000028\tat restore point "myrp"\n')
wal_history_file04.write('1\t0/2000028\tat restore point "myrp"\n')
wal_history_file04.write('2\t0/3000028\tunknown\n')
wal_file = wal_dir.join('0000000100000000/000000010000000000000001')
wal_file.ensure()
xlog_db = wal_dir.join('xlog.db')
xlog_db.write(
'000000010000000000000001\t42\t43\tNone\n'
'00000002.history\t42\t43\tNone\n'
'00000003.history\t42\t43\tNone\n'
'00000004.history\t42\t43\tNone\n')
backup_manager.server.xlogdb.return_value.__enter__.return_value = (
xlog_db.open())
backup_manager.server.config.basebackups_directory = base_dir.strpath
backup_manager.server.config.wals_directory = wal_dir.strpath
# The following tablespaces are defined in the default backup info
# generated by build_test_backup_info
b_info = build_test_backup_info(
backup_id='fake_backup_id',
server=backup_manager.server,
)
# Make sure we are not trying to delete any WAL file,
# just by having a previous backup
b_pre_info = build_test_backup_info(
backup_id='fake_backup',
server=backup_manager.server,
)
mock_available_backups.return_value = {
"fake_backup": b_pre_info,
"fake_backup_id": b_info,
}
# Test 1: minimum redundancy not satisfied
caplog_reset(caplog)
backup_manager.server.config.minimum_redundancy = 2
b_info.set_attribute('backup_version', 1)
build_backup_directories(b_info)
backup_manager.delete_backup(b_info)
assert 'WARNING Skipping delete of backup ' in caplog.text
assert 'ERROR' not in caplog.text
assert os.path.exists(pg_data.strpath)
assert not os.path.exists(pg_data_v2.strpath)
assert os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)
# Test 2: normal delete expecting no errors (old format)
caplog_reset(caplog)
backup_manager.server.config.minimum_redundancy = 1
b_info.set_attribute('backup_version', 1)
build_backup_directories(b_info)
backup_manager.delete_backup(b_info)
# the backup must not exists on disk anymore
assert 'WARNING' not in caplog.text
assert 'ERROR' not in caplog.text
assert not os.path.exists(pg_data.strpath)
assert not os.path.exists(pg_data_v2.strpath)
assert os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)
# Test 3: delete the backup again, expect a failure in log
caplog_reset(caplog)
backup_manager.delete_backup(b_info)
assert 'ERROR Failure deleting backup fake_backup_id' in caplog.text
assert not os.path.exists(pg_data.strpath)
assert not os.path.exists(pg_data_v2.strpath)
assert os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)
# Test 4: normal delete expecting no errors (new format)
caplog_reset(caplog)
b_info.set_attribute('backup_version', 2)
build_backup_directories(b_info)
backup_manager.delete_backup(b_info)
assert 'WARNING' not in caplog.text
assert 'ERROR' not in caplog.text
assert not os.path.exists(pg_data.strpath)
assert not os.path.exists(pg_data_v2.strpath)
assert os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)
# Test 5: normal delete of first backup no errors and no skip
# removing one of the two backups present (new format)
# and all the previous wal
caplog_reset(caplog)
b_pre_info.set_attribute('backup_version', 2)
build_backup_directories(b_pre_info)
backup_manager.delete_backup(b_pre_info)
assert 'WARNING' not in caplog.text
assert 'ERROR' not in caplog.text
assert not os.path.exists(pg_data.strpath)
assert not os.path.exists(pg_data_v2.strpath)
assert not os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)
# Test 6: normal delete of first backup no errors and no skip
# removing one of the two backups present (new format)
# the previous wal is retained as on a different timeline
caplog_reset(caplog)
wal_file.ensure()
b_pre_info.set_attribute('timeline', 2)
b_pre_info.set_attribute('backup_version', 2)
build_backup_directories(b_pre_info)
backup_manager.delete_backup(b_pre_info)
assert 'WARNING' not in caplog.text
assert 'ERROR' not in caplog.text
assert not os.path.exists(pg_data.strpath)
assert not os.path.exists(pg_data_v2.strpath)
assert os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)
# Test 7: simulate an error deleting the the backup.
with patch('barman.backup.BackupManager.delete_backup_data')\
as mock_delete_data:
caplog_reset(caplog)
# We force delete_pgdata method to raise an exception.
mock_delete_data.side_effect = OSError('TestError')
wal_file.ensure()
b_pre_info.set_attribute('backup_version', 2)
build_backup_directories(b_pre_info)
backup_manager.delete_backup(b_info)
assert 'TestError' in caplog.text
assert os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)
def test_delete_backup(self, mock_available_backups, tmpdir, caplog):
"""
Simple test for the deletion of a backup.
We want to test the behaviour of the delete_backup method
"""
# Setup of the test backup_manager
backup_manager = build_backup_manager()
backup_manager.server.config.name = 'TestServer'
backup_manager.server.config.barman_lock_directory = tmpdir.strpath
backup_manager.server.config.backup_options = []
# Create a fake backup directory inside tmpdir (old format)
base_dir = tmpdir.mkdir('base')
backup_dir = base_dir.mkdir('fake_backup_id')
pg_data = backup_dir.mkdir('pgdata')
pg_data_v2 = backup_dir.mkdir('data')
wal_dir = tmpdir.mkdir('wals')
wal_history_file02 = wal_dir.join('00000002.history')
wal_history_file03 = wal_dir.join('00000003.history')
wal_history_file04 = wal_dir.join('00000004.history')
wal_history_file02.write('1\t0/2000028\tat restore point "myrp"\n')
wal_history_file03.write('1\t0/2000028\tat restore point "myrp"\n')
wal_history_file04.write('1\t0/2000028\tat restore point "myrp"\n')
wal_history_file04.write('2\t0/3000028\tunknown\n')
wal_file = wal_dir.join('0000000100000000/000000010000000000000001')
wal_file.ensure()
xlog_db = wal_dir.join('xlog.db')
xlog_db.write(
'000000010000000000000001\t42\t43\tNone\n'
'00000002.history\t42\t43\tNone\n'
'00000003.history\t42\t43\tNone\n'
'00000004.history\t42\t43\tNone\n')
backup_manager.server.xlogdb.return_value.__enter__.return_value = (
xlog_db.open())
backup_manager.server.config.basebackups_directory = base_dir.strpath
backup_manager.server.config.wals_directory = wal_dir.strpath
# The following tablespaces are defined in the default backup info
# generated by build_test_backup_info
b_info = build_test_backup_info(
backup_id='fake_backup_id',
server=backup_manager.server,
)
# Make sure we are not trying to delete any WAL file,
# just by having a previous backup
b_pre_info = build_test_backup_info(
backup_id='fake_backup',
server=backup_manager.server,
)
mock_available_backups.return_value = {
"fake_backup": b_pre_info,
"fake_backup_id": b_info,
}
# Test 1: minimum redundancy not satisfied
caplog_reset(caplog)
backup_manager.server.config.minimum_redundancy = 2
b_info.set_attribute('backup_version', 1)
build_backup_directories(b_info)
backup_manager.delete_backup(b_info)
assert 'WARNING Skipping delete of backup ' in caplog.text
assert 'ERROR' not in caplog.text
assert os.path.exists(pg_data.strpath)
assert not os.path.exists(pg_data_v2.strpath)
assert os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)
# Test 2: normal delete expecting no errors (old format)
caplog_reset(caplog)
backup_manager.server.config.minimum_redundancy = 1
b_info.set_attribute('backup_version', 1)
build_backup_directories(b_info)
backup_manager.delete_backup(b_info)
# the backup must not exists on disk anymore
assert 'WARNING' not in caplog.text
assert 'ERROR' not in caplog.text
assert not os.path.exists(pg_data.strpath)
assert not os.path.exists(pg_data_v2.strpath)
assert os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)
# Test 3: delete the backup again, expect a failure in log
caplog_reset(caplog)
backup_manager.delete_backup(b_info)
assert 'ERROR Failure deleting backup fake_backup_id' in caplog.text
assert not os.path.exists(pg_data.strpath)
assert not os.path.exists(pg_data_v2.strpath)
assert os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)
# Test 4: normal delete expecting no errors (new format)
caplog_reset(caplog)
b_info.set_attribute('backup_version', 2)
build_backup_directories(b_info)
backup_manager.delete_backup(b_info)
assert 'WARNING' not in caplog.text
assert 'ERROR' not in caplog.text
assert not os.path.exists(pg_data.strpath)
assert not os.path.exists(pg_data_v2.strpath)
assert os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)
# Test 5: normal delete of first backup no errors and no skip
# removing one of the two backups present (new format)
# and all the previous wal
caplog_reset(caplog)
b_pre_info.set_attribute('backup_version', 2)
build_backup_directories(b_pre_info)
backup_manager.delete_backup(b_pre_info)
assert 'WARNING' not in caplog.text
assert 'ERROR' not in caplog.text
assert not os.path.exists(pg_data.strpath)
assert not os.path.exists(pg_data_v2.strpath)
assert not os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)
# Test 6: normal delete of first backup no errors and no skip
# removing one of the two backups present (new format)
# the previous wal is retained as on a different timeline
caplog_reset(caplog)
wal_file.ensure()
b_pre_info.set_attribute('timeline', 2)
b_pre_info.set_attribute('backup_version', 2)
build_backup_directories(b_pre_info)
backup_manager.delete_backup(b_pre_info)
assert 'WARNING' not in caplog.text
assert 'ERROR' not in caplog.text
assert not os.path.exists(pg_data.strpath)
assert not os.path.exists(pg_data_v2.strpath)
assert os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)
# Test 7: simulate an error deleting the the backup.
with patch('barman.backup.BackupManager.delete_backup_data')\
as mock_delete_data:
caplog_reset(caplog)
# We force delete_pgdata method to raise an exception.
mock_delete_data.side_effect = OSError('TestError')
wal_file.ensure()
b_pre_info.set_attribute('backup_version', 2)
build_backup_directories(b_pre_info)
backup_manager.delete_backup(b_info)
assert 'TestError' in caplog.text
assert os.path.exists(wal_file.strpath)
assert os.path.exists(wal_history_file02.strpath)
assert os.path.exists(wal_history_file03.strpath)
assert os.path.exists(wal_history_file04.strpath)