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mirror of https://github.com/postgrespro/pg_probackup.git synced 2024-12-11 11:41:33 +02:00
pg_probackup/tests/retention_test.py
2018-06-02 20:35:37 +03:00

179 lines
6.5 KiB
Python

import os
import unittest
from datetime import datetime, timedelta
from .helpers.ptrack_helpers import ProbackupTest
module_name = 'retention'
class RetentionTest(ProbackupTest, unittest.TestCase):
# @unittest.skip("skip")
# @unittest.expectedFailure
def test_retention_redundancy_1(self):
"""purge backups using redundancy-based retention policy"""
fname = self.id().split('.')[3]
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
initdb_params=['--data-checksums'],
pg_options={'wal_level': 'replica'}
)
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
self.set_archiving(backup_dir, 'node', node)
node.start()
with open(os.path.join(
backup_dir, 'backups', 'node',
"pg_probackup.conf"), "a") as conf:
conf.write("retention-redundancy = 1\n")
# Make backups to be purged
self.backup_node(backup_dir, 'node', node)
self.backup_node(backup_dir, 'node', node, backup_type="page")
# Make backups to be keeped
self.backup_node(backup_dir, 'node', node)
self.backup_node(backup_dir, 'node', node, backup_type="page")
self.assertEqual(len(self.show_pb(backup_dir, 'node')), 4)
# Purge backups
log = self.delete_expired(backup_dir, 'node')
self.assertEqual(len(self.show_pb(backup_dir, 'node')), 2)
# Check that WAL segments were deleted
min_wal = None
max_wal = None
for line in log.splitlines():
if line.startswith("INFO: removed min WAL segment"):
min_wal = line[31:-1]
elif line.startswith("INFO: removed max WAL segment"):
max_wal = line[31:-1]
if not min_wal:
self.assertTrue(False, "min_wal is empty")
if not max_wal:
self.assertTrue(False, "max_wal is not set")
for wal_name in os.listdir(os.path.join(backup_dir, 'wal', 'node')):
if not wal_name.endswith(".backup"):
# wal_name_b = wal_name.encode('ascii')
self.assertEqual(wal_name[8:] > min_wal[8:], True)
self.assertEqual(wal_name[8:] > max_wal[8:], True)
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("123")
def test_retention_window_2(self):
"""purge backups using window-based retention policy"""
fname = self.id().split('.')[3]
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
initdb_params=['--data-checksums'],
pg_options={'wal_level': 'replica'}
)
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
self.set_archiving(backup_dir, 'node', node)
node.start()
with open(
os.path.join(
backup_dir,
'backups',
'node',
"pg_probackup.conf"), "a") as conf:
conf.write("retention-redundancy = 1\n")
conf.write("retention-window = 1\n")
# Make backups to be purged
self.backup_node(backup_dir, 'node', node)
self.backup_node(backup_dir, 'node', node, backup_type="page")
# Make backup to be keeped
self.backup_node(backup_dir, 'node', node)
backups = os.path.join(backup_dir, 'backups', 'node')
days_delta = 5
for backup in os.listdir(backups):
if backup == 'pg_probackup.conf':
continue
with open(
os.path.join(
backups, backup, "backup.control"), "a") as conf:
conf.write("recovery_time='{:%Y-%m-%d %H:%M:%S}'\n".format(
datetime.now() - timedelta(days=days_delta)))
days_delta -= 1
# Make backup to be keeped
self.backup_node(backup_dir, 'node', node, backup_type="page")
self.assertEqual(len(self.show_pb(backup_dir, 'node')), 4)
# Purge backups
self.delete_expired(backup_dir, 'node')
self.assertEqual(len(self.show_pb(backup_dir, 'node')), 2)
# Clean after yourself
self.del_test_dir(module_name, fname)
# @unittest.skip("123")
def test_retention_wal(self):
"""purge backups using window-based retention policy"""
fname = self.id().split('.')[3]
node = self.make_simple_node(
base_dir="{0}/{1}/node".format(module_name, fname),
initdb_params=['--data-checksums'],
pg_options={'wal_level': 'replica'}
)
backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
self.init_pb(backup_dir)
self.add_instance(backup_dir, 'node', node)
self.set_archiving(backup_dir, 'node', node)
node.start()
node.safe_psql(
"postgres",
"create table t_heap as select i as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
"from generate_series(0,100500) i")
# Take FULL BACKUP
self.backup_node(backup_dir, 'node', node)
node.safe_psql(
"postgres",
"insert into t_heap select i as id, md5(i::text) as text, "
"md5(repeat(i::text,10))::tsvector as tsvector "
"from generate_series(0,100500) i")
self.backup_node(backup_dir, 'node', node)
backups = os.path.join(backup_dir, 'backups', 'node')
days_delta = 5
for backup in os.listdir(backups):
if backup == 'pg_probackup.conf':
continue
with open(
os.path.join(
backups, backup, "backup.control"), "a") as conf:
conf.write("recovery_time='{:%Y-%m-%d %H:%M:%S}'\n".format(
datetime.now() - timedelta(days=days_delta)))
days_delta -= 1
# Make backup to be keeped
self.backup_node(backup_dir, 'node', node, backup_type="page")
self.assertEqual(len(self.show_pb(backup_dir, 'node')), 3)
# Purge backups
self.delete_expired(
backup_dir, 'node', options=['--retention-window=2'])
self.assertEqual(len(self.show_pb(backup_dir, 'node')), 2)
# Clean after yourself
self.del_test_dir(module_name, fname)